ASTM B111 UNS C68700 Seamless Aluminum Brass Tube 1/4″ SCH10S 6M

Type: UNS C68700 Seamless Tube
Material: UNS C68700 (CuZn20Al2As/HAL77-2)
OD: 1/4 Inch (DN8/13.7mm)
Ends: Plain End
Length: 6M

Wall Thickness: 1.65mm/SCH10S

Aluminum brass UNS C68700 has a copper content of not less than 76%.

Material Comparison Tables of Copper or Copper Alloy (ASTM →KS, JIS, DIN, BS, NBN, NF, UNI)

ASTMSTANDARD	UNS NO.	KOREA/JAPANES		GERMAN			BRITISH			ISO
		KS/JIS Symbol	KS/JISNumbe	DIN Type	DIN Number	Materiral Number	B.S Number	B.S Grade	Remarks	ISO Type	ISO Number
B 111 Copper and Copper-Alloy Seamless Condenser Tube and Ferrule Stock
C44300	C44300	C4430T/C4430T	D5301/H3300	CuZn28Sn	1785		2871	CZ111		CuZn28Sn1	R1337
C68700	C68700	C6870T/C6870T	D5301/H3300	CuZN20Al	1785		2871	CZ110		CuZn20Al2	426-I
C70600	C70600	C7060T/C7060T	D5301/H3300	CuNi10Fe1Mn	17664		2871	CN102		CuNi10Fe1Mn	429
C71000	C71000	C7100T/C7100T	D5301/H3300
C71500	C71500	C7150T/C7150T	D5301/H3300	CuNi30Mn1Fe	17664		2871	CN107		CuNi30Mn1Fe
C71640	C71640	C7164T/C7164T	D5301/H3300	CuNi30Fe2Mn2	17664		2871	CN108		CuNi30FeMn2

Chemical composition of Copper or Copper Alloy Tube

Composition, %

Copper or Copper Alloy UNS No.

CopperA

Tin

Aluminum

Nickel, incl Cobalt

Lead, max

Iron

Zinc

Managnese

Arsenic

Antimony

Phosphorus

Chro mium

Other Named Elements

C10200

99.95 min

–

–

–

–

–

–

–

–

–

–

–

–

C12000

99.90 min

–

–

–

–

–

–

–

–

–

0.004-0.012

–

–

C12200

99.9 min

–

–

–

–

–

–

–

–

–

0.015-0.040

–

–

C14200

99.40 min

–

–

–

–

–

–

–

0.15-0.50

–

0.015-0.040

–

–

C19200

98.7 min

–

–

–

–

0.8-1.2

–

–

0.15-0.50

–

0.01-0.04

–

–

C23000

84.0-86.0

–

–

–

0.05

0.05 max

remalnder

–

–

–

–

–

–

C28000

59.0-63.0

–

–

–

0.30

0.07 max

remainder

–

–

–

–

–

–

C44300

70.0-73.0

0.9-1.2

–

–

0.07

0.06 max

remainder

–

0.02-0.06

–

–

–

–

C44400

70.0-73.0

0.9-1.2

–

–

0.07

0.06 max

remainder

–

–

0.02-0.10

–

–

–

C44500

70.0-73.0

0.9-1.2

–

–

0.07

0.06 max

remainder

–

–

–

0.02-0.10

–

–

C60800

remainder

–

5.0-6.5

–

0.10

0.10 max

–

–

0.02-0.35

–

–

–

–

C68700

76.0-79.0

–

1.8-2.5

–

0.07

0.06 max

remainder

–

0.02-0.10

–

–

–

–

C70400

remainder

–

4.8-6.2

0.05

1.3-1.7

1.0max

0.30-0.8

–

–

–

–

–

C70600

remainder

–

9.0-11.0

0.05B

1.0-1.8

1.0maxB

1.0max

–

–

B

–

B

C71000

remainder

–

19.0-23.0

0.05B

0.50-1.0

1.0maxB

1.0max

–

–

B

–

B

C71500

remainder

–

29.0-33.0

0.05B

0.40-1.0

1.0maxB

1.0max

–

–

B

–

B

C71640

remainder

–

29.0-32.0

0.05B

1.7-2.3

1.0maxB

1.5-2.5

–

–

B

–

B

C72200

remainder

–

15.0-18.0

0.05B

0.50-1.0

1.0maxB

1.0max

–

–

B

0.30 -0.70

B

^A Copper (including silver),
^B When the product is for subsequent welding applications, and so specified by the purchaser, zinc shall be 0.50% max, lead 0.02% max, phosphorus 0.02% max, sulfur 0.02% max, and carbon 0.05% max.

When all the elements in Table 1 are analyzed, their sum shall be as shown in the following table.

Copper Alloy UNS No.	Copper Plus Named Elements.% min
C23000	99.8
C28000	99.7
C44300	99.6
C44400	99.6
C44500	99.6
C68700	99.5

Tensile Requirements of Copper or Copper Alloy

Copper or Copper Alloy UNS No.	Temper Designation		Tensile Strength min ksiA	Yield strengthBmin ksiA	Elongation in 2 in, min%
	Standard	Former
C10200, C12000, C12200, C14200	H55	light-drawn	36	30	…
C10200, C12000, C12200, C14200	H80	hard-drawn	45	40	…
C19200	061	annealed	38	12	…
C23000	061	annealed	40	12	…
C28000	061	annealed	50	20	…
C44300, C44400, C44500	061	annealed	45	15	…
C60800	061	annealed	50	19	…
C68700	061	annealed	50	18	…
C70400	061	annealed	38	12	…
C70400	H55	light-drawn	40	30	…
C70600	061	annealed	40	15	…
C70600	H55	light-drawn	45	35	…
C71000	061	annealed	45	16	…
C71500	061	annealed	52	18	…
C71500	–	–	–	–	–
Wall thicknesses up to 0.048 in, incl	HR50	drawn, stress-relieved	72	50	12
Wall thicknesses over 0.048 in.	HR50	drawn, stress-relieved	72	50	15
C71640	061	annealed	63	25	…
C71640	HR50	drawn, stress relieved	81	58	…
C72200	061	annealed	45	16	…
C72200	H55	light-drawn	50	30	…

Expansion Requirements of Copper or Copper Alloy

Temper Designatio		Copper or Copper Alloy UNS No.	Expansion of Tbue Outside Diameter, in Percent of Original Outside Diameter
Standard	Former
061	annealed	C19200	30
		C23000	20
		C28000	15
		C44300,C44400,C44500	20
		C60800	20
		C68700	20
		C70400	30
		C70600	30
		C71000	30
		C71500	30
		C71640	30
		C72200	30
H55	light-drawn	C10200,C12000,C12200	20
		C14200	20
		C70400	20
		C70600	20
		C72200	20
HR50	drawn,stress relieved	C71500	20
	hard-drawn, end annealed	C10200,C12000,C14200	30

NOTCH DEPTH

Tube Wall Thickness, in.	Tube Outside Diameter, in.
	Over ¼to ¾, incl	Over ¾ to 1 ¼, incl	Over 1¼ to 3⅓, incl.
Over 0.017-0.032	0.005	0.006	0.007
0.032-0.049, incl	0.006	0.006	0.0075
0.049-0.083, incl	0.007	0.0075	0.008
0.083-0.109, incl	0.0075	0.0085	0.0095
0.109-0.120, incl	0.009	0.009	0.011

DIAMETER OF DRILLED HOLES

Tube Outside Diameter, in.	Diameter of Drilled Holes, in.	Drill No.
¼-¾, incl	0.025	72
Over ¾-1, incl	0.031	68
Over 1-1¼, incl	0.036	64
Over 1¼-1½, incl	0.042	58
Over 1½-1¾, incl	.0046	56
Over 1¾-2, incl	0.052	55

Hydrostatic Test – Each heat exchanger tube shall stand, without showing evidence of leakage, an internal hydrostatic pressure sufficient to subject the material to a fiber stress of 7000 psi, determined by the following equation for thin hollow cylinders under tension. The tube need not be tested at a hudrostatic pressure of over 1000psi unless so specified.

• P = 2St/(D-0.8t) where:

• P = hydrostatic pressure, psig.

• t = thickness of tube wall, in.

• D = outside diameter of the tube. in., and

• S = allowable stress of the material, psi.

DIAMETER TOLERANCES

Outside Diameter, in	Wall Thickness, in.
	0.020A 0.022 0.025 0.028	0.032	0.035	0.042	0.049 and Over
	Diameter Tolerance, Plus and Minus, in.
Up to 0.500, incl	0.003	0.0025	0.0025	0.0025	0.0025
Over 0.500-0.740, incl	0.0040	0.004	0.004	0.0035	0.003
Over 0.500-7.40, incl	0.0060	0.006	0.005	0.0045	0.004
Over 0.740-1.000, incl	…	0.009	0.008	0.006	0.045
Over 1.250-1.375, incl	…	…	…	0.008	0.005
Over 1.375-2.000, incl	…	…	…	…	0.006

^{A Tolerances in this column are applicable to light drawn and drawn tempers only.
Tolerances for annealed tempers shall be as agreed upon between the manufacturer and the purchaser.}
WALL THICKNESS TOLERANCES, PLUS AND MINUS IN.

Wall Thicness, in.	Outside Diameter, in.
	Over ⅛ to ⅝, incl	Over ⅝ to 1, incl	Over 1 to 2, incl
0.020, incl to 0.032	0.003	0.003	…
0.032, incl to 0.035	0.003	0.003	0.004
0.035, incl to 0.058	0.004	0.0045	0.0045
0.058, incl to 0.083	0.0045	0.005	0.005
0.083, incl to 0.120	0.005	0.0065	0.0065
0.120, incl to 0.134	0.007	0.007	0.0075

LENGTH TOLERANCES

Specified Length, ft	Tolerance, all Plus, in.
Up to 15	3/32
Over 15-20, incl	1/8
Over 20-30, incl	5/32
Over 30-60, incl	3/8
Over 60-100, inclA	1/2

^A Condenser tubes in lengths over 100 ft are not in present demand. Tolerance values for the lengths will be developed as experience dictates. Tolerance values for lengths in wall thicknesses of 0.020, incl. to 0.032 shall be as agreed upon between the manufacturer or supplier and the purchaser.

Tube. Outside Diameter, in	Tolerance
Up to ⅝, incl	0.010 in.
Over ⅝	0.016 in./in. of diameter

The properties and chemical compositions enumerated in this specification shall, in case of disagreement,
be determined in accordance with the following ASTM methods:

Test	ASTM Designation
Chemical analysis	B 170A,E53,E54,E62,E75,E478
Grainsize	E112
Expansion (pin test)	B153
Mercurous nitrate	B154
Tension	E8
Nondestructive test	E243

^A Reference to Specification B170 is to the suggested chemical methods in the annex thereof.
When E-1 Committee has tested and published methods for assaying the low-level impurties in copper.
The Specification B 170 annex will be eliminated.

APPENDIXES (Nonmadatory Information)

DENSITY OF COPPER AND COPPER ALLOYS

Copper or Copper Alloy UNS No.	Density, lb.in.3
C10100,C10200,C10300,C10800,C12000,C12200,C14200	0.323
C19200	0.320
C23000	0.316
C28000	0.303
C44300,C44400,C44500	0.308
C60800	0.295
C61300,C61400	0.285
C68700	0.301
C70400	0.323
C70600	0.323
C71000	0.323
C71500	0.323
C71640	0.323
C72200	0.323