How to get high quality astm a335 chrome moly pipe

What is a astm a335 chrome moly pipe?

Astm A335 Pipe (asme S/a335, Chorme-moly) Is a seamless ferritic alloy steel pipe for high temperature service. pipe ordered to this specification shall be suitable for bending, flanging (vanstoning), and similar forming operations, and for fusion welding. sometimes referred to as “p grade”, chome moly pipe is popular in p-grades p5, p9, p11, p22, and p91.

Difference between carbon steel and alloy steel

Carbon steel

Carbon steel is also known as the iron-carbon alloy containing less than 2% carbon WC. 
Generally also contain small amounts of silicon, manganese, sulfur, phosphorus and carbon steel, in addition to carbon use can be divided into carbon steel and carbon structural steel, carbon tool steel, and ease of cutting structural steel three categories. Carbon structural steel is divided into building structural steel and machinery manufacturing structural steel two kinds.
According to the carbon steel, carbon content can be divided into low-carbon steel (WC ≤ 0.25%), medium carbon steel (WC0.25% – 0.6%) phosphorus, sulfur content and high-carbon steel (WC> 6%) can be divided into ordinary carbon steel (containing phosphorus, sulfur higher), high-quality carbon steel (containing phosphorus, low sulfur) and high quality steel (phosphorus, sulfur less), generally, the higher carbon content, the higher the hardness, higher strength but lower ductility.

Alloy steel

Alloy steel is a type of steel that has presence of certain other elements apart from iron and carbon. Commonly added elements in alloy steel are manganese, silicon, boron, chromium, vanadium and nickel. The quantity of these metals in alloy steel is primarily dependent upon the use of such steel. Normally alloy steel is made to get desired physical characteristics in the steel.

Alloy steels are divided into low alloy steels and high alloy steels. When the percentage of added elements goes past 8 (in terms of weight), the steel is referred to as high alloy steel. In cases where added elements remain below 8% by weight of the steel, it is a low alloy steel. Low alloy steels are more common in the industry. In general, addition of one or more of such elements to steel makes it harder and more durable. Such steel is also resistant to corrosion and tougher than normal steel. To alter the properties of steel, it needs heat treatment when elements are added to it.

To keep the alloy steel weldable, carbon content needs to be reduced. As such carbon content is lowered down to 0.1% to 0.3% and alloying elements are also decreased in proportion. These alloys of steel are known as high strength, low alloy steels. You would be surprised to know that stainless steel is also an alloy steel with a minimum of 10% of chromium by weight.

In brief Alloy Steel vs Carbon Steel:

  • There are many types of steels such as alloy steel and carbon steel
  • As the names signify, alloy steel is the type of steel formed by addition of various other elements in the steel through heat treatment.
  • Carbon steel on the other hand is steel that has primarily carbon in it and does not require any minimum percentage of other elements.
  • Carbon steel is the type of steel predominantly used in the US
  • Stainless steel is a kind of alloy steel

Grades: ASTM A335 P5, P9, P11, P-22, and P91 

Sizes 

  • NPS 1/4” to NPS 24” 
  • Wall Thickness – Schedules 40 through 160, STD, XS, XXS. 
  • Unscheduled heavy wall pipe thicknesses available up to 4 inches. 
Applications:

Chrome moly pipe under ASTM & ASME specification A/SA 335 P1, P2, P11, P12, P15, P22, P91, P92, P122 are used for power industries whereas ASTM/ASME A/SA 335 P5, P9 are used for petrochemical industries

  • Strong resistance to rupturing at high temperatures and high pressures
  • May be used for Hydrogen Sulfide Corrosion Services
  • Resistant to cracking from hydrogen attack and embrittlement
  • Resistant to hot sulfide corrosion cracking
  • Can be used for NACE Applications where sour environments are under high temp and pressure
  • Can be used in NACE-MRO 175 Sour Service
  • Ideal for creep rupture applications
  • Can handle high temperatures with very low elasticity

Piping Component Specifications:

Chemical Composition:

These pipe bear high resistance to rupture at high temperature and pressures. With hydrogen crack resistance and sulfide stress corrosion cracking chrome moly pipe are highly preferred over Carbon pipe.

Grade  Carbon  Manganese  Phosphorous,
max
 Sulfur, 
max
 Silicon  Molybdenum
ASTM A335 P5  0.15max  0.30-0.60  0.025  0.025  0.50max  0.45-0.65
 ASTM A335 P9  0.15max  0.30-0.60  0.025  0.025  0.25-1.00  0.90-1.10
 ASTM A335 P11  0.05-0.15  0.30-0.60  0.025  0.025  0.50-1.00  0.44-0.65
 ASTM A335 P22  0.05-0.15  0.30-0.60  0.025  0.025  0.50max  0.87-1.13
 ASTM A335 P91  0.08-0.12  0.30-0.60  0.020  0.010 0.20-0.50  0.85-1.05
Zr 0.01 max V 0.18-0.25 N 0.03-0.07 Ni 0.40 max Al 0.02 max Cb 0.06-0.10 Ti 0.01 max
Tensile Requirements
Tensile Strength, min., psi P-5 P-9 P-11 P-22 P-91
ksi 60 60 60 60 85
MPa 415 415 415 415 585
Yield Strength, min., psi
ksi 30 30 30 30 60
MPa 205 205 205 205 415

Note: P91 shall not have a hardness not exceeding 250 HB/265 HV [25HRC].

Mechanical Properties
Mechanical properties  P1,P2  P12  P23  P91  P92,P11  P122
 Tensile strength  380  415  510  585  620  620
 Yield strength  205  220  400  415  440  400

A335 is often called chrome moly pipe because of the chemical makeup of Molybdenum (Mo) and Chromium (Cr). Molybdenum increases the strength of steel as well as the elastic limit, resistance to wear, impact qualities, and hardenability. Moly increases the resistance to softening, restrains grain growth and makes chromium steel less susceptible to embrittlement. Moly is the most effective single additive that increases high temperature creep strength.
It also enhances the corrosion resistance of steel, and inhibits pitting. Chromium (or chrome) is the essential constituent of stainless steel. Any steel with 12% or more Chrome is considered stainless. Chrome is virtually irreplaceable in resisting oxidation at elevated temperatures. Chrome raises the tensile, yield, and hardness at room temperatures. The composition chrome moly alloy steel pipe make it ideal for use in power plants, refineries, petro chemical plants, and oil field services where fluids and gases are transported at extremely high temperatures and pressures.

Heat Treatment
A / N+T
N+T / Q+T
N+T
Material & Manufacture

Pipe may be either hot finished or cold drawn with the finishing heat treatment noted below.

Heat Treatment Requirements
Grade Heat Treatment Type
P5, P9, P11, and P22
Normalizing Temperature Range F [C] Subcritical Annealing or Tempering
Temperature Range F [C]
A335 P5 (b,c) Full or Isothermal Anneal
Normalize and Temper ***** 1250 [675]
Subcritical Anneal (P5c only) ***** 1325 – 1375 [715 – 745]
A335 P9 Full or Isothermal Anneal
Normalize and Temper ***** 1250 [675]
A335 P11 Full or Isothermal Anneal
Normalize and Temper ***** 1200 [650]
A335 P22 Full or Isothermal Anneal
Normalize and Temper ***** 1250 [675]
A335 P91 Normalize and Temper 1900-1975 [1040 – 1080] 1350-1470 [730 – 800]
Quench and Temper 1900-1975 [1040 – 1080] 1350-1470 [730 – 800]
Permissible Variation in Wall Thickness
NPS [DN] Designator Tolerance, % from Specified
Over Under
1/8 to 2 1/2 [6 to 65] incl., all t/D ratios 20.0% 12.5%
Above 2 1/2 [65], t/D < or = 5% 22.5% 12.5%
Above 2 1/2 [65], t/D > 5% 15.0% 12.5%
(t = Specified Wall Thickness; D = Specified Outside Diameter)
Elongation Requirements
Calculated Minimum Elongation Values
Elongation in 2 in. or 50 mm, min %
Wall Thickness P5, P9, P11, P22 P91
in. mm Longitudinal Transverse Longitudinal
5/16 (0.312) 8 30 20 20
9/32 (0.281) 7.2 28 19 19
1/4 (0.250) 6.4 27 18 18
7/32 (0.219) 5.6 26 17
3/16 (0.188) 4.8 24 16
5/32 (0.156) 4 22 15
7/8 (0.125) 3.2 21 14
3/32 (0.094) 2.4 20 13
1/18 (0.062) 1.6 18 12
Permissible Variations in Outside Diameter

Outside Diameter at any point shall not vary from standard specified more than:

NPS [DN] Designator Over Under
in. mm in. mm
1/8 to 1 1/2 [6 to 40], incl. 1/64 (0.015) 0.40 1/64 (0.015) 0.40
Over 1 1/2 to 4 [40 to 100], incl. 1/32 (0.031) 0.79 1/32 (0.031) 0.79
Over 4 to 8 [100 to 200], incl. 1/16 (0.062) 1.59 1/32 (0.031) 0.79
Over 8 to 12 [200 to 300], incl. 3/32 (0.093) 2.38 1/32 (0.031) 0.79
Over 12 [300] +/- 1% of the specified outside diameter
Ordering Information

Orders for material under this specification should include the following, as required, to describe the desired material adequately:

Quantity Feet, meters, or number of lengths
Name of material Seamless Alloy Steel Pipe
Grade P5, P9, P11, P22, P91
Manufacturer Hot-finished or cold-drawn
Size using one of the following:
NPS and Schedule Number
Outside Diameter and Nominal Wall Thickness
Outside Diameter and Minimum Wall Thickness
Inside Diameter and Nominal Wall Thickness
Inside Diameter and Minimum Wall Thickness
Length Specific or Random
End Finish
Mechanical Tests Specified

Transverse or Longitudinal Tension Test and Flattening Test, Hardness Test, or Bend Test
For material heat treated in a batch-type furnace, tests shall be made on 5% of the pipe from each treated lot. For small lots, at least one pipe shall be tested.
For material heat treated by the continuous process, tests shall be made on a sufficient number of pipe to constitute 5% of the lot, but in no case less than 2 pipe.

Notes for Hardness Test:
P91 shall not have a hardness not exceeding 250 HB/265 HV [25HRC].

Notes for Bend Test:
For pipe whose diameter exceeds NPS 25 and whose diameter to wall thickness ratio is 7.0 or less shall be subjected to the bend test instead of the flattening test.
Other pipe whose diameter equals or exceeds NPS 10 may be given the bend test in place of the flattening test subject to the approval of the purchaser.
The bend test specimens shall be bent at room temperature through 180 without cracking on the outside of the bent portion.

Hydrostatic Test

The inside diameter of the bend shall be 1 inch [25 mm].
Each length of pipe shall be Hydro tested, at option of manufacture nondestructive electric testing can be used.

Referenced Documents
  • A999/A999M Specification for General Requirements for Alloy and Stainless Steel Pipe
  • E213 Practice for Ultrasonic Examination of Metal Pipe and Tubing
  • E309 Practice for Eddy-Current Examination of Steel Tubular Products Using Magnetic Saturation
  • E381 Method of Macroetch Testing Steel Bars, Billets, Blooms, and Forgings
  • E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
  • E570 Practice for Flux Leakage Examination of Ferromagnetic Steel Tubular Products
  • B36.10M Welded and Seamless Wrought Steel Pipe
  • SAE J 1086 Practice for Numbering Metals and Alloys (UNS)
  • SNT-TC-1A Recommended Practice for Nondestructive Personnel Qualification and Certification

ASTM A335 P9 alloy steel pipe

ASTM A335 P9 Alloy steel pipe apply to petroleum, chemical industry, electric power, boiler, high temperature resistant, low temperature resistant, corrosion resistant. 

ASTM A335 P9 is the part of ASTM A335, The pipe shall be suitable for bending, flanging, and similar forming operations, and for fusion welding. The steel material shall conform to chemical composition, tensile property, and hardness requirements.

The range of ASTM A335 P9 alloy steel pipe sizes that may be examined by each method shall be subjected to the limitations in the scope of the respective practice.

Each length of pipe shall be subjected to the hydrostatic test. Also, each pipe shall be examined by a non-destructive examination method in accordance to the required practices.

The different mechanical test requirements for pipes, namely, transverse or longitudinal tension test, flattening test, and hardness or bend test are presented.Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.

  • Outer Dimensions: 19.05mm – 114.3mm
  • Wall Thickness: 2.0mm – 14 mm
  • Length: max 16000mm

Steel grade: ASTM A335 P9 alloy steel pipe

Packing of ASTM A335 P9 alloy steel pipe:

Bare packing/bundle packing/crate packing/wooden protection at the both sides of tubes and suitably protected for sea-worthly delivery or as requested.

Inspection and Test of ASTM A335 P9 alloy steel pipe:

Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength,Yield Strength, Elongation, Flaring, Flattening, Bending, Hardness, Impact Test), Surface and Dimension Test,No-destructive Test, Hydrostatic Test.

Surface treatment of ASTM A335 P9 alloy steel pipe:

Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting.
Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.

ASTM A335 P9 alloy steel pipe alloy steel pipe Chemical Compositions(%)
Compositions Data
UNS Designa-tion K41545
Carbon(max.) 0.15
Manganese 0.30-0.60
Phosphorus(max.) 0.025
Silicon(max.) 0.50
Chromium 4.00-6.00
Molybdenum 0.45-0.65
Other Elements
Mechanical properties for ASTM A335 P9 alloy steel pipe
Properties Data
Tensile strength, min, (MPa) 415 Mpa
Yield strength, min, (MPa) 205 Mpa
Elongation, min, (%), L/T 30/20
Material & Manufacture of ASTM A335 P9 alloy steel pipe

Pipe may be either hot finished or cold drawn with the finishing heat treatment noted below.

Heat Treatment of ASTM A335 P9 alloy steel pipe
  • A / N+T
  • N+T / Q+T
  • N+T
Mechanical Tests Specified of ASTM A335 P9 alloy steel pipe
  • Transverse or Longitudinal Tension Test and Flattening Test, Hardness Test, or Bend Test
  • For material heat treated in a batch-type furnace, tests shall be made on 5% of the pipe from each treated lot. For small lots, at least one pipe shall be tested.
  • For material heat treated by the continuous process, tests shall be made on a sufficient number of pipe to constitute 5% of the lot, but in no case less than 2 pipe.
Notes for Bend Test of ASTM A335 P9 alloy steel pipe:
  • For pipe whose diameter exceeds NPS 25 and whose diameter to wall thickness ratio is 7.0 or less shall be subjected to the bend test instead of the flattening test.
  • Other pipe whose diameter equals or exceeds NPS 10 may be given the bend test in place of the flattening test subject to the approval of the purchaser.
  • The bend test specimens shall be bent at room temperature through 180 without cracking on the outside of the bent portion.

ASTM A335 P11 alloy steel pipe

ASTM A335 P11 is the part of ASTM A335, the pipe shall be suitable for bending, flanging, and similar forming operations, and for fusion welding.

The steel material shall conform to chemical composition, tensile property, and hardness requirements. Each length of pipe shall be subjected to the hydrostatic test. Also, each pipe shall be examined by a non-destructive examination method in accordance to the required practices.

The different mechanical test requirements for pipes, namely, transverse or longitudinal tension test, flattening test, and hardness or bend test are presented.

Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.

  • Outer Dimensions: 19.05mm – 114.3mm
  • Wall Thickness: 2.0mm – 14 mm
  • Length: max 16000mm

Steel grade: ASTM A335 P11 

Packing:

Bare packing/bundle packing/crate packing/wooden protection at the both sides of tubes and suitably protected for sea-worthly delivery or as requested.

Inspection and Test:

Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength,Yield Strength, Elongation, Flaring, Flattening, Bending, Hardness, Impact Test), Surface and Dimension Test,No-destructive Test, Hydrostatic Test.

Surface treatment:

Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting.
Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.

ASTM A335 P11 Chemical Compositions(%)
Compositions Data
UNS Designa-tion K11597
Carbon 0.05-0.60
Manganese 0.30-0.60
Phosphorus(max.) 0.025
Sulfur(max.) 0.025
Silicon 0.50-1.00
Nickel
Chromium 1.00-1.50
Molybdenum 0.44-0.65
Other Elements
Mechanical properties for ASTM A335 P11
Properties Data
Tensile strength, min, (MPa) 415 Mpa
Yield strength, min, (MPa) 205 Mpa
Elongation, min, (%), L/T 30/20
Material & Manufacture

Pipe may be either hot finished or cold drawn with the finishing heat treatment noted below.

Heat Treatment
  • A / N+T
  • N+T / Q+T
  • N+T
Mechanical Tests Specified
  • Transverse or Longitudinal Tension Test and Flattening Test, Hardness Test, or Bend Test
  • For material heat treated in a batch-type furnace, tests shall be made on 5% of the pipe from each treated lot. For small lots, at least one pipe shall be tested.
  • For material heat treated by the continuous process, tests shall be made on a sufficient number of pipe to constitute 5% of the lot, but in no case less than 2 pipe.
Notes for Hardness Test:
  • P11 shall not have a hardness not exceeding 250 HB/265 HV [25HRC].

ASTM A335 P22 alloy steel pipe

ASTM A335 P22 is the part of ASTM A335. ASTM A335 P22 alloy steel pipe shall be suitable for bending, flanging, and similar forming operations, and for fusion welding.

Each length of pipe shall be subjected to the hydrostatic test. Also, each pipe shall be examined by a non-destructive examination method in accordance to the required practices.

ultrasonic test on astm a335 p22 pipe - How to get high quality astm a335 chrome moly pipe

Ultrasonic test on ASTM A335 P22 pipe

A335 is often called chrome moly pipe because of the chemical makeup of Molybdenum (Mo) and Chromium (Cr). Molybdenum increases the strength of steel as well as the elastic limit, resistance to wear, impact qualities, and hardenability.

The range of ASTM A335 P22 pipe sizes that may be examined by each method shall be subjected to the limitations in the scope of the respective practice.
The different mechanical test requirements for pipes, namely, transverse or longitudinal tension test, flattening test, and hardness or bend test are presented.Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.

  • Outer Dimensions: 19.05mm – 114.3mm
  • Wall Thickness: 2.0mm – 14 mm
  • Length: max 16000mm

Steel grade: ASTM A335 P22 

Packing:

Bare packing/bundle packing/crate packing/wooden protection at the both sides of tubes and suitably protected for sea-worthly delivery or as requested. 

Inspection and Test:

Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength,Yield Strength, Elongation, Flaring, Flattening, Bending, Hardness, Impact Test), Surface and Dimension Test,No-destructive Test, Hydrostatic Test.

Surface treatment:

Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting.
Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.

ASTM A335 P22 Chemical Compositions(%)
Compositions Data
UNS Designa-tion K21590
Carbon 0.05-0.15
Manganese 0.30-0.60
Phosphorus(max.) 0.025
Sulfur(max.) 0.025
Silicon 0.50-1.00
Nickel
Chromium 1.90-2.60
Molybdenum 0.87-1.13
Other Elements
Mechanical properties for ASTM A335 P22
Properties Data
Tensile strength, min, (MPa) 415 Mpa
Yield strength, min, (MPa) 205 Mpa
Elongation, min, (%), L/T 30/20

(Note: This is summarized information from ASME Specification A335. Please refer to the specific Standard or Specification or contact us for more details.)

ASTM A335 P91 Alloy pipe


ASTM A335 P91 high pressure semaless boiler pipe - How to get high quality astm a335 chrome moly pipe

ASTM A335 P91 high pressure semaless boiler pipe, The range of ASTM A335 P91 seamless alloy steel pipe sizes that may be examined by each method shall be subjected to the limitations in the scope of the respective practice. Each length of pipe shall be subjected to the hydrostatic test. Also, each pipe shall be examined by a non-destructive examination method in accordance to the required practices.
The different mechanical test requirements for pipes, namely, transverse or longitudinal tension test, flattening test, and hardness or bend test are presented.Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.

  • Outer Dimensions: 19.05mm – 114.3mm
  • Wall Thickness: 2.0mm – 14 mm
  • Length: max 16000mm

Steel grade: ASTM A335 P91

Packing:

Bare packing/bundle packing/crate packing/wooden protection at the both sides of tubes and suitably protected for sea-worthly delivery or as requested.

Inspection and Test:

Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength,Yield Strength, Elongation, Flaring, Flattening, Bending, Hardness, Impact Test), Surface and Dimension Test,No-destructive Test, Hydrostatic Test.

Surface treatment:

Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting.
Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.

ASTM A335 P91 Chemical Compositions(%)
Compositions Data
UNS Designa-tion K91560
Carbon(max.) 0.08-0.12
Manganese 0.30-0.60
Phosphorus(max.) 0.025
Silicon(max.) 0.50
Chromium 4.00-6.00
Molybdenum 0.45-0.65
Other Elements
Mechanical properties for ASTM A335 P91
Properties Data
Tensile strength, min, (MPa) 415 Mpa
Yield strength, min, (MPa) 205 Mpa
Elongation, min, (%), L/T 30/20

ASTM A335 P92 High pressure boiler pipes

ASTM A335 P92 is the part of ASTM A335, The pipe shall be suitable for bending, flanging, and similar forming operations, and for fusion welding. The steel material shall conform to chemical composition, tensile property, and hardness requirements.

ASTM A335 P92 high pressure semaless boiler pipe, The range of ASTM A335 P92 seamless alloy steel pipe sizes that may be examined by each method shall be subjected to the limitations in the scope of the respective practice. 

Each length of pipe shall be subjected to the hydrostatic test. Also, each pipe shall be examined by a non-destructive examination method in accordance to the required practices.

The range of ASTM A335 P92 pipe sizes that may be examined by each method shall be subjected to the limitations in the scope of the respective practice.

The different mechanical test requirements for pipes, namely, transverse or longitudinal tension test, flattening test, and hardness or bend test are presented.Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.

  • Outer Dimensions: 19.05mm – 114.3mm
  • Wall Thickness: 2.0mm – 14 mm
  • Length: max 16000mm

Steel grade: ASTM A335 P92

Packing:

Bare packing/bundle packing/crate packing/wooden protection at the both sides of tubes and suitably protected for sea-worthly delivery or as requested.

Inspection and Test:

Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength,Yield Strength, Elongation, Flaring, Flattening, Bending, Hardness, Impact Test), Surface and Dimension Test,No-destructive Test, Hydrostatic Test.

Surface treatment:

Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting.
Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.

Chemical Requirements of ASTM A335 P92
UNS Designation K92460
Carbon 0.07–0.13
Manganese 0.30–0.60
Phosphorus(max) 0.02
Sulfur(max) 0.01
Silicon 0.50 max
Chromium 8.50–9.50
Molybdenum 0.30–0.60
V 0.15-0.25
N 0.03-0.07
Ni (max) 0.4
Al(max) 0.02
Cb 0.04-0.09
W 1.5-2.00
B 0.001-0.006
Ti (max) 0.01
Zr(max) 0.01
Mechanical Properties  of ASTM A335 P92
Properties Data
Tensile strength, min, (MPa) 620
Yield strength, min, (MPa) 440
Elongation, min, (%), L/T 20/…

ASTM A335 P5 High pressure boiler pipes

ASTM A335 P5 alloy pipe NDE - How to get high quality astm a335 chrome moly pipe

ASTM A335 P5 NDE

ASTM A335 P5 is the part of ASTM A335, The pipe shall be suitable for bending, flanging, and similar forming operations, and for fusion welding.

The steel material shall conform to chemical composition, tensile property, and hardness requirements. The range of ASTM A335 P5 pipe sizes that may be examined by each method shall be subjected to the limitations in the scope of the respective practice. Each length of pipe shall be subjected to the hydrostatic test. Also, each pipe shall be examined by a non-destructive examination method in accordance to the required practices.

The range of ASTM A335 P5 pipe sizes that may be examined by each method shall be subjected to the limitations in the scope of the respective practice.

The different mechanical test requirements for pipes, namely, transverse or longitudinal tension test, flattening test, and hardness or bend test are presented.Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.

  • Outer Dimensions: 19.05mm – 114.3mm
  • Wall Thickness: 2.0mm – 14 mm
  • Length: max 16000mm

Steel grade: ASTM A335 P5

Packing:

Bare packing/bundle packing/crate packing/wooden protection at the both sides of tubes and suitably protected for sea-worthly delivery or as requested.

Inspection and Test:

Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength,Yield Strength, Elongation, Flaring, Flattening, Bending, Hardness, Impact Test), Surface and Dimension Test,No-destructive Test, Hydrostatic Test.

Surface treatment:

Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting.
Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.

ASTM A335 P5 Chemical Compositions(%)
Compositions Data
UNS Designa-tion K41545
Carbon(max.) 0.15
Manganese 0.30-0.60
Phosphorus(max.) 0.025
Silicon(max.) 0.50
Chromium 4.00-6.00
Molybdenum 0.45-0.65
Other Elements
Mechanical properties for ASTM A335 P5
Properties Data
Tensile strength, min, (MPa) 415 Mpa
Yield strength, min, (MPa) 205 Mpa
Elongation, min, (%), L/T 30/20
Standards for Alloy pipes & tubes

Astm A335 standard

Scope

1.1This specification covers nominal (average) wall seamless alloy-steel pipe intended for high-temperature service (Mote 1). Pipe ordered to this specification shall be suitable for bending, flanging (vanstoning), and similar forming operations, and for fusion welding. Selection will depend upon design, service conditions, mechanical properties, and high-temperature characteristics. 
NOTE 1 Α Appendix X1 lists the sizes and wall thicknesses of pipe which may be obtained under current commercial practice. 
1.2 Several grades of ferritic steels (Note 2) are covered. Their compositions are given in Table 1.

Note 2

ΑFerritic steels in this specification are defined as low and intermediate-alloy steels containing up to and including 10% chromium. 
1.3 Supplementary requirements (S1 to S7) of an optional nature are provided. These supplementary requirements call for additional tests to be made, and when desired, shall be so stated in the order together with the number of such tests required. 
1.4 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with specification. The inch-pound units shall apply unless the “M” designation of this specification is specified in the order. 
Note 3ΑThe dimensionless designator NPS (nominal pipe size) has been substituted in this standard for such traditional terms as “nominal diameter,” “size,” and “nominal size.”

Chemical Composition:
Grade  C  Mn  P  S  Si  Mo
 P1  0.10-0.20  0.30-0.80  0.025  0.025  0.10-0.50  0.44-0.65
 P2  0.10-0.20  0.30-0.61  0.025  0.025  0.10-0.30  0.44-0.65
 P5  0.15max  0.30-0.60  0.025  0.025  0.50max  0.45-0.65
 P5b  0.15max  0.30-0.60  0.025  0.025  1.00-2.00  0.45-0.65
 P5c  0.12max  0.30-0.60  0.025  0.025  0.50max  0.45-0.65
 P9  0.15max  0.30-0.60  0.025  0.025  0.25-1.00  0.90-1.10
 P11  0.05-0.15  0.30-0.60  0.025  0.025  0.50-1.00  0.44-0.65
 P12  0.05-0.15  0.30-0.61  0.025  0.025  0.50max  0.44-0.65
 P15  0.05-0.15  0.30-0.60  0.025  0.025  1.15-1.65  0.44-0.65
 P21  0.05-0.15  0.30-0.60  0.025  0.025  0.50max  0.80-1.06
 P22  0.05-0.15  0.30-0.60  0.025  0.025  0.50max  0.87-1.13
 P23  0.04-0.10  0.10-0.60  0.030max  0.010max  0.50max  0.05-1.30
Mechanical Properties
Mechanical properties  P1,P2  P12  P23  P91  P92,P11  P122
 Tensile strength  380  415  510  585  620  620
 Yield strength  205  220  400  415  440  400

Heat Treatment
A / N+T
N+T / Q+T
N+T
Material & Manufacture

Pipe may be either hot finished or cold drawn with the finishing heat treatment noted below.

Heat Treatment Requirements
Grade Heat Treatment Type
P5, P9, P11, and P22
Normalizing Temperature Range F [C] Subcritical Annealing or Tempering
Temperature Range F [C]
A335 P5 (b,c) Full or Isothermal Anneal
Normalize and Temper ***** 1250 [675]
Subcritical Anneal (P5c only) ***** 1325 – 1375 [715 – 745]
A335 P9 Full or Isothermal Anneal
Normalize and Temper ***** 1250 [675]
A335 P11 Full or Isothermal Anneal
Normalize and Temper ***** 1200 [650]
A335 P22 Full or Isothermal Anneal
Normalize and Temper ***** 1250 [675]
A335 P91 Normalize and Temper 1900-1975 [1040 – 1080] 1350-1470 [730 – 800]
Quench and Temper 1900-1975 [1040 – 1080] 1350-1470 [730 – 800]
Mechanical Tests Specified

Transverse or Longitudinal Tension Test and Flattening Test, Hardness Test, or Bend Test
For material heat treated in a batch-type furnace, tests shall be made on 5% of the pipe from each treated lot. For small lots, at least one pipe shall be tested.
For material heat treated by the continuous process, tests shall be made on a sufficient number of pipe to constitute 5% of the lot, but in no case less than 2 pipe.

Notes for Hardness Test:
P91 shall not have a hardness not exceeding 250 HB/265 HV [25HRC].

Notes for Bend Test:
For pipe whose diameter exceeds NPS 25 and whose diameter to wall thickness ratio is 7.0 or less shall be subjected to the bend test instead of the flattening test.
Other pipe whose diameter equals or exceeds NPS 10 may be given the bend test in place of the flattening test subject to the approval of the purchaser.
The bend test specimens shall be bent at room temperature through 180 without cracking on the outside of the bent portion.

Hydrostatic Test

The inside diameter of the bend shall be 1 inch [25 mm].
Each length of pipe shall be Hydro tested, at option of manufacture nondestructive electric testing can be used.

Ordering Information

Orders for material under this specification should include the following, as required, to describe the desired material adequately:

Quantity Feet, meters, or number of lengths
Name of material Seamless Alloy Steel Pipe
Grade P5, P9, P11, P22, P91
Manufacture Hot-finished or cold-drawn
Size using one of the following:
NPS and Schedule Number
Outside Diameter and Nominal Wall Thickness
Outside Diameter and Minimum Wall Thickness
Inside Diameter and Nominal Wall Thickness
Inside Diameter and Minimum Wall Thickness
Length Specific or Random
End Finish

ASTM A213 Standard

1. Scope

1.1 This specication2 covers seamless ferritic and austenitic steel boiler, superheater, and heat-exchanger tubes, designated Grades T5,TP304, etc. These steels are listed in Tables 1 and 2.
1.2 Grades containing the letter, H, in their designation, have requirements different from those of similar grades not containing the letter, H. These different requirements provide higher creep-rupture strength than normally achievable in similar grades without these different requirements.

1.3 The tubing sizes and thicknesses usually furnished to this specication are 18 in. [3.2 mm] in inside diameter to 5 in. [127 mm] in outside diameter and 0.015 to 0.500 in. [0.4 to 12.7 mm], inclusive, in minimum wall thickness or, if specied in the order, average wall thickness. Tubing having other diameters may be furnished, provided such tubes comply with all other requirements of this specication.

1. The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. The inch-pound units shall apply unless the “M” designation of this specication is specied in the order.

2.1 ASTM Standards:3

1 This specication is under the jurisdiction of ASTM Committee A01on Steel,Stainless Steeland Related Alloys and is the direct responsibility of Subcommittee A01.10 on Stainless and Alloy Steel Tubular Products.
Current edition approved April 1, 2009. Published April 2009. Originally approved in 1939. Last previous edition approved in 2009 as A 213/A 213M – 09.
2 For ASME Boiler and Pressure Vessel Code applications see related Specication SA-213 in Section II of that Code.
A 262 Practices for Detecting Susceptibility to Intergranu lar Attack in AusteniticStainless Steels
A 941 Terminology Relating to Steel,Stainless Steel, Re lated Alloys, and Ferroalloys
A 1016/A 1016M Specication for General Requirements for Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless Steel Tubes
E112 Test Methods for Determining Average Grain Size

3. Terminology

1. Denitions—For denitions of terms used in this specication, refer to Terminology A 941.2. Ordering Information

4.1 It shall be the responsibility of the purchaser to specify all requirements that are necessary for products under this specication. Such requirements to be considered include, but are not limited to, the following:
4.1.1 Quantity (feet, metres, or number of lengths),
4.1.2 Name of material (seamless tubes),
4.1.3 Grade (Tables 1 and 2),
4.1.4 Condition (hot nished or cold nished),
4.1.5 Controlled structural characteristics (see 6.3),
4.1.6 Size (outside diameter and minimum wall thickness, unless average wall thickness is specied),
4.1.7 Length (specic or random),
4.1.8 Hydrostatic Test or Nondestructive Electric Test (see 10.1),
4.1.9 Specication designation and year of issue,
4.1.10 Increased sulfur (for machinability, see Note B, Table 1, and 15.3), and

Special requirements and any supplementary requirements selected.General Requirements5.1 Product furnished to this specication shall conform to the requirements of Specication A 1016/A 1016M, including any supplementary requirements that are indicated.
Nominal Pipe Size(NPS): 1/8, 1/4, 3/8, 1/2, 3/4, 1, 1 1/4, 1 1/2, 2, 2 1/2 inch

Outside Diameter: 10,3 – 73 mm (0,405 – 2,875 inch)

Wall Thickness: 1,24 – 7,01 (0,049 – 0,276 inch)

Notes:

Steel Grades -TP 304, TP 304L, TP 316, TP 316L, TP 321, T5, T11, T12, T13, T91Technical requirements acc. to ASTM A 450.Size of pipes in accordance with ANSI/ASME B36.19M.The quality of pipes is ensured by manufacturing process and non-destructive test.Hardness of metal not less than 100 HB.Length tolerance of measured pipes not greater than +10 mm.Monitoring of continuity of metal by pneumotest with pressure of 6 bar is available.Intergranular corrosion test in accordance with ASTM A262, Practice E is available.Weight Count:(just for Alloy Steel)Weight(Kg/M)=(OD-WT)*WT*0.02466 , OD:Outside Diameter, WT:Wall-Thickness

Sizes:
NPS, inch
Outside Diameter(mm)
Wall Thickness(mm)
Max. Length(M)
1/8
10,3
1,24; 1,73; 2,40
12
1/4
13,7
1,65; 2,24; 3,02
3/8
17,1
1,65; 2,31; 3,20
1/2
21,3
1,65; 2,11; 2,77; 3,73
3/4
26,7
1,65; 2,11; 2,87; 3,91
1
33,4
1,65; 2,77; 3,38; 4,55
10
1 1/4
42,4
1,65; 2,77; 3,56; 4,85
1 1/2
48,3
2,77; 3,68; 5,08
2
60,3
3,91; 5,54
7
2 1/2
73,0
5,16; 7,01
Mechanical properties:
Steel Grade
Tensile StrengthN/mm2(min)
Yield StrengthN/mm2(min)
Elongation % (min)
TP304
515
205
35
TP304L
485
170
35
TP316
515
205
35
TP316L
485
170
35
TP321
515
205
35
T11
≥415
≥205
30
T12
≥415
≥220
T13
≥415
≥205
30
Chemical Composition(%, max)
Steel Grade
C
Si
Mn
Cr
Ni
Mo
S
P
TP304
0,08
0,75
2
18 – 20
8 – 11
0,03
0,04
TP304L
0,035
0,75
2
18 – 20
8 – 13
0,03
0,04
TP316
0,08
0,75
2
16 – 18
11 – 14
2 – 3
0,03
0,04
TP316L
0,035
0,75
2
16 – 18
10 – 15
2 – 3
0,03
0,04
TP321
0,08
0,75
2
17 – 20
9 – 13
0,03
0,04
T11
0.05-0.15 0.50-1.00 0.30-0.60
0.5-1.0
1.0-1.5 ≤0.25 ≤0.025
T12
0.05-0.15 ≤0.50 0.30-0.61 0.80-1.25
0.44-0.65 ≤0.25 ≤0.025
T13
0.05-0.15 ≤0.50 0.30-0.60 1.90-2.60
0.87-1.13 ≤0.25 ≤0.025

Material Comparison Tables (ASTM →KS, JIS, DIN, BS, NBN, NF, UNI)

ASTM A333 / A333M – 16 Standard

Scope of ASTM A333
  • This specification covers nominal (average) wall seamless and welded carbon and alloy steel pipe intended for use at low temperatures. Several grades of ferritic steel are included as listed in Table 1. Some product sizes may not be available under this specification because heavier wall thicknesses have an adverse affect on low-temperature impact properties.
  • Supplementary Requirement S1 of an optional nature is provided. This shall apply only when specified by the purchaser.
  • The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification. The inch-pound units shall apply unless the “M” designation of this specification is specified in the order.
  • Note 1: The dimensionless designator NPS (nominal pipe size) has been substituted in this standard for such traditional terms as “nominal diameter”, “size”, and “nominal size”.
Mainly Grade of ASTM A333:
  • ASTM A333 Grade 1
  • ASTM A333 Grade 3
  • ASTM A333 Grade 4
  • ASTM A333 Grade 6
  • ASTM A333 Grade 7 Pipe
  • ASTM A333 Grade 8
  • ASTM A333 Grade 9
  • ASTM A333 Gr.10 pipe
  • ASTM A333 Grade 11
Strike temperature condition:
Crade The lowest temperature for strike test
ASTM A333 Grade 1 -50 -45
ASTM A333 Grade 3 -150 -100
ASTM A333 Grade 4 -150 -100
ASTM A333 Grade 6 -50 -45
ASTM A333 Grade 7 -100 -75
ASTM A333 Grade 8 -320 -195
ASTM A333 Grade 9 -100 -75
ASTM A333 Grade 10 -75 -60
 Mechanical requiremnts of ASTM A333 alloy pipe
Grade Tensile Strength (MPa) Yield Point (MPa) Elongation (%)
Y X
Grade 1 ≥380 ≥205 ≥35 ≥25
Grade 3 ≥450 ≥240 ≥30 ≥20
Grade 4 ≥415 ≥240 ≥30 ≥16.5
Grade 6 ≥415 ≥240 ≥30 ≥16.5
Grade 7 ≥450 ≥240 ≥30 ≥22
Grade 8 ≥690 ≥515 ≥22
Grade 9 ≥435 ≥315 ≥28
Grade 10 ≥550 ≥450 ≥22
Grade 11 ≥450 ≥240 ≥18
 Chemical Composition (%) of ASTM A333 steel pipe
Grade Chemical Composition (%)
C Si Mn P S Cr Ni Cu Mo V Al
Grade 1 ≤0.30 0.40-1.06 ≤0.025 ≤0.025
Grade 3 ≤0.19 0.18-0.37 0.31-0.64 ≤0.025 ≤0.025 3.18-3.82
Grade 4 ≤0.12 0.18-0.37 0.50-1.05 ≤0.025 ≤0.025 0.44-1.01 0.47-0.98 0.40-0.75 0.04-0.30
Grade 6 ≤0.30 ≥0.10 0.29-1.06 ≤0.025 ≤0.025
Grade 7 ≤0.19 0.13-0.32 ≤0.90 ≤0.025 ≤0.025 2.03-2.57
Grade 8 ≤0.13 0.13-0.32 ≤0.90 ≤0.025 ≤0.025 8.40-9.60
Grade 9 ≤0.20 0.40-1.06 ≤0.025 ≤0.025 1.60-2.24 0.75-1.25
Grade 10 ≤0.20 0.10-0.35 1.15-1.50 ≤0.03 ≤0.015 ≤0.15 ≤0.25 ≤0.015 ≤0.50 ≤0.12 ≤0.06
Grade 11 ≤0.10 ≤0.35 ≤0.6 ≤0.025 ≤0.025 ≤0.50 35.0-37.0 ≤0.50
Referenced Documents
  • A370 Test Methods and Definitions for Mechanical Testing of Steel Products
  • A671 Specification for Electric-Fusion-Welded Steel Pipe for Atmospheric and Lower Temperatures
  • A999/A999M Specification for General Requirements for Alloy and Stainless Steel Pipe
  • E23 Test Methods for Notched Bar Impact Testing of Metallic Materials

Source: China Alloy Steel Pipe Manufacturer – Yaang Pipe Industry (www.steeljrv.com)

(Yaang Pipe Industry is a leading manufacturer and supplier of nickel alloy and stainless steel products, including Super Duplex Stainless Steel Flanges, Stainless Steel Flanges, Stainless Steel Pipe Fittings, Stainless Steel Pipe. Yaang products are widely used in Shipbuilding, Nuclear power, Marine engineering, Petroleum, Chemical, Mining, Sewage treatment, Natural gas and Pressure vessels and other industries.)

If you want to have more information about the article or you want to share your opinion with us, contact us at sales@steeljrv.com
Please notice that you might be interested in the other technical articles we’ve published:

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References:

  • https://www.yaang.com
  • https://www.astm.org/Standards/A333.htm

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