Nickel Alloy: Nickel 200 (UNS N02200)/Nickel 201 (UNS N02201)

What is Nickel 200 (UNS N02200)?

Designated as UNS N02200 & W.Nr. 2.4060 & 2.4066, Nickel 200 is solid solution strengthened and commercially pure wrought nickel. It has good mechanical properties and excellent resistance to many corrosive environments. Nickel 200 is primarily used in food processing industry due to its corrosion resistance. It can also be used in applications involving reducing chemicals, caustic alkalies, distilled and natural waters, alkaline salt solutions, dry fluorine, and synthetic fibers. Depending on the specific product form, Nickel 200 may be furnished with different heat treatment and delivery conditions which result in different mechanical properties (tensile strength, yield strength, elongation, reduction of area, hardness, etc).


Nickel 200 is industrial grade, with good mechanical properties and excellent corrosion resistance to alkali (such as sodium hydroxide). It also has good electrical, thermal and magnetostrictive properties.
The nickel 200 is also known as the phywell 200.

Nickel 200 (UNS N02200) is widely used in many fields such as marine engineering, chemical and hydrocarbon processing equipment, valves, pumps, shafts, flangesfittings, fasteners, and heat exchangers.

nickel 200 wires - Nickel Alloy: Nickel 200 (UNS N02200)/Nickel 201 (UNS N02201)

Nickel 200 wires, ISO 9724/ DIN 17753.

Chemical Composition of Nickel 200 (UNS N02200)

Chemical Composition of Nickel 200, %
Nickel(plus Cobalt) ≥99.0
Copper ≤0.25
Iron ≤0.40
Manganese ≤0.35
Carbon ≤0.15
Silicon ≤0.35
Sulfur ≤0.01

Physical Properties of Nickel 200 (UNS N02200)

Physical Properties of Nickel 200
Density Melting Range Specific Heat Curie Temperature
lb/in3 g/cm3 °F °C Btu/lb*°F J/kg*°C °F °C
0.321 8.89 2615-2635 1435-1446 0.109 456 680 360

nickel 200 round bar - Nickel Alloy: Nickel 200 (UNS N02200)/Nickel 201 (UNS N02201)

Nickel 200 round bar, (O.D)72mm x (L)160mm.

Density 8.89 g/cm³ 0.321 lb/in³
Melting point 1446°C 2635°F
Coefficient of expansion 13.3 μm/m °C (20 – 100°C) 7.4 x 10-6 in/in °F (70 – 212°F)
Rigid modulus 81 kN/mm² 11748 ksi
Modulus of elasticity 204 kN/mm² 29588 ksi
Resistivity
9.6 μΩ • cm 58 ohm • circ mil/ft
Thermal conductivity
70.2 W/m • °C 487 btu • in/ft2 • h • °F
Nature
Status Approximate tensile strength Approximate operating temperature
N/mm² ksi
Annealing 400 – 500 58 – 73 The tensile strength and elongation decreased significantly by 315 ° C (600 ° f) at these temperatures. The operating temperature is related to the environment, load and size range.
Hard drawn 700 – 900 102 – 131

The above tensile strength is typical. If you need a different value, ask for details.

Product Forms & Standards of Nickel 200 (UNS N02200)

Nickel 200: Product Forms and Relative Standards
Products form Standard
Rod and bar ASTM B160, DIN 17752, ISO9723
Pipe and Tube ASTM B161, B163, B725, B730, B751, B775, B829, DIN 17751, ISO 6207
Plate, Sheet & Strip ASTM B162, DIN 17750, ISO 6208
Fittings ASTM B366
Forgings ASTM B564, ISO 9725, DIN17754
Wire DIN 17753, ISO 9724

Key characteristics of Nickel 200 (UNS N02200)

  • Industrial grade nickel.
  • Resistant to various reducing chemicals and caustic.
  • Good magnetostrictive properties.
  • High conductivity and thermal conductivity.
  • Good ductility and low work hardening rate.
  • Good welding characteristics.

What is Nickel 201 (UNS N02201)?

Designated as UNS N02201 or W.Nr. 2.4061 & 2.4068, Nickel 201 is has almost identical chemical composition as Nickel 200 except the lower-carbon content. Nickel 201 is typically applied in caustic evaporators, combustion boats, plater bars, as well as electronic components. Compared to Nickel 200, Nickel 201 has much lower base hardness and lower work-hardening rate hence is particularly suited for spinning and cold forming. According to ASME Boiler and Pressure Vessel Code Section VIII-Division 1, Nickel 201 is approved for construction of pressure vessels for service up to 1250°F. Its mechanical properties also vary depending on the manufacture process and heat treatment conditions.

nickel 201 pipe length - Nickel Alloy: Nickel 200 (UNS N02200)/Nickel 201 (UNS N02201)

Pipe length of Nickel 201, 3″ W.T=8 mm, ASTM B161 UNS N02201.

Chemical Composition of Nickel 201 (UNS N02201)

Chemical Composition of Nickel 201, %
Nickel(plus Cobalt) ≥99.0
Copper ≤0.25
Iron ≤0.40
Manganese ≤0.35
Carbon ≤0.02
Silicon ≤0.35
Sulfur ≤0.01

Physical Properties of Nickel 201 (UNS N02201)

Physical Properties of Nickel 201
Density Specific Heat Curie Temperature Modulus of Elasticity (Tension)
lb/in3 g/cm3 Btu/lb*°F J/kg*°C °F °C 103 ksi GPa
0.321 8.89 0.109 456 680 360 30 207
Density 8.89 g/cm³ 0.321 lb/in³
Melting point 1446°C 2635°F
Coefficient of expansion 13.1 μm/m °C (20 – 100°C) 7.3 x 10-6 in/in °F (70 – 212°F)
Rigid modulus 82 kN/mm² 11893 ksi
Modulus of elasticity 207 kN/mm² 30000 ksi
Resistivity
8.5 μΩ • cm 51 ohm • circ mil/ft
Thermal conductivity
79.3 W/m • °C 550 btu • in/ft2 • h • °F
Nature
Status Approximate tensile strength Approximate operating temperature
N/mm² ksi
Annealing 400 – 500 58 – 73 The tensile strength and elongation decreased significantly by 315 ° C (600 ° f) at these temperatures. The operating temperature is related to the environment, load and size range.
Hard drawn 700 – 900 102 – 131

The above tensile strength is typical. If you need a different value, ask for details.

Key characteristics of Nickel 201 (UNS N02201)

  • Low carbon version of nickel 200.
  • Prior to nickel 200 in applications requiring exposure above 315 ° C (600 ° f).
  • Resistant to various reducing chemicals and caustic.
  • Good magnetostrictive properties.
  • High conductivity and thermal conductivity.
  • Good ductility and low work hardening rate.
  • Good welding characteristics.

Product Forms and Standards of Nickel 201 (UNS N02201)

nickel 201 strip in coils - Nickel Alloy: Nickel 200 (UNS N02200)/Nickel 201 (UNS N02201)

Nickel 201 strip in coils, 60 mm x 1.25 mm thick.

Nickel 201: Product Forms and Relative Standards
Products Form Standard
Rod and bar ASTM B160, DIN 17752, ISO9723, VdTUV 345
Pipe and Tube ASTM B161, B163, B725, B730, B751, B775, B829, DIN 17751, ISO 6207, BS 3074(NA 12), VdTUV 345
Plate, Sheet & Strip ASTM B162, DIN 17750, ISO 6208, BS3072-3073(NA 12), SAE AMS 5553, VdTUV 345
Fittings ASTM B366
Forgings ISO 9725, DIN 17754
Wire DIN 17753, ISO 9724

What’s the difference between nickel-200 and nickel-201?

Nickel is available in two variants, Nickel 200, and a low-carbon Nickel 201, both of which have excellent resistance to caustic soda, even as the hot anhydrous form. Except for silver, nickel is the most resistant metal for high caustic concentrations at the elevated temperatures which generally prevail. At concentrations up to 73% caustic, the corrosion rate is generally less than 0.025 mm/y (1 mpy). The rates increase slightly above 73%, as shown.
Nickel 200 contains up to 0.10% carbon, which can precipitate as graphitic carbon on heating above 425°C (800°F), which reduces the ductility of the alloy. This may
also occur upon prolonged heating at temperatures as low as 315°C (600°F). Above 300°C (570°F), e.g., in molten anhydrous caustic, the low-carbon Nickel 201 should be used to avoid graphite formation and attendant embrittlement and intergranular attack.
In most caustic applications Nickel 200 and Nickel 201 are very resistant to caustic SCC at all concentrations and temperatures up to about 290°C (550°F). Though Nickel 200 or 201 are usually most resistant, Alloy 400 and 600 are often used for higher strength.
Nickel 200 is subject to cracking in mercury and a few cases of cracking have been attributed to mercury contamination of the caustic process feed.

As pure nickel, nickel 200 and nickel 201 have good mechanical properties and corrosion resistance.  
At the application temperature higher than 300 ° C (572 ° f), nickel 201 is superior to nickel 200 because of its low carbon content, which greatly reduces the strength and work hardening rate, thus improving the ductility. These two materials are widely used in automobile manufacturing and chemical industry.
Excellent corrosion resistance
Nickel 200 and nickel 201 have excellent corrosion resistance to a variety of corrosive media, especially hydrofluoric acid and alkali. It not only shows outstanding corrosion resistance under reduction condition, but also has good corrosion resistance in oxidation medium once passivation oxide layer is formed. In addition, due to their high nickel content, the corrosion resistance of the two materials is still excellent in the environment of high concentration alkaline solution and salt bath.
As the carbon content of nickel 201 decreases, intergranular corrosion can be almost completely avoided even in high temperature environment above 315 ° C (599 ° f). However, in alkaline solutions, the chlorate concentration must be kept at a low level, because it is susceptible to corrosion through the formation of chlorides.
The corrosion resistance of nickel 200 and nickel 201 to inorganic acid will change with temperature, solution concentration and ventilation. For example, the corrosion resistance of the two materials is stronger in the acid environment without ventilation; the two materials have good corrosion resistance in the acid, alkali and neutral salt solution (except for the oxidizing salt solution); the two materials have good dry gas resistance at room temperature. Nickel 201 can be used in dry chlorine and hydrogen chloride at temperatures up to 550 ° C (1022 ° f).
Nickel 201 is a pure nickel with a carbon limit of no more than 0.02%. It should be used instead of nickel 200 when the temperature is higher than 315 ℃ (600 ℉). The material has been certified for use in pressure vessels operating at temperatures between – 10 ° C and 600 ° C (14 ° F and 1112 ° f).
At the application temperature higher than 300 ° C (572 ° f), nickel 201 is superior to nickel 200 because of its low carbon content, which greatly reduces the strength and work hardening rate, thus improving the ductility.

Nickel 200 Flanges

nickel 200 flanges 01 - Nickel Alloy: Nickel 200 (UNS N02200)/Nickel 201 (UNS N02201)

Nickel 200 W/N RF flange 01

nickel 200 flanges 02 - Nickel Alloy: Nickel 200 (UNS N02200)/Nickel 201 (UNS N02201)

Nickel 200 flange WNRF 02

Recently, we have supplied several pieces of Nickel 200 welding neck flanges to a Polish customer which are manufactured from ASTM B160 grade N02200 bars. The flanges dimensions are in accordance with EN 1092-1 Type 11 DN32(welding neck, raised face).

Source: China Nickel 200 Flanges 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

Summary
nickel alloy nickel 200 uns n02200 nickel 201 uns n02201 - Nickel Alloy: Nickel 200 (UNS N02200)/Nickel 201 (UNS N02201)
Article Name
Nickel Alloy: Nickel 200 (UNS N02200)/Nickel 201 (UNS N02201)
Description
Nickel is available in two variants, Nickel 200, and a low-carbon Nickel 201, both of which have excellent resistance to caustic soda, even as the hot anhydrous form.
Author
Publisher Name
www.steeljrv.com
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