Nickel 200/201 Stainless Steel

Nickel 200/201 Stainless Steel

Nickel 200/201 Stainless Steel General Properties Nickel 200 (UNS N02200) and 201 (UNS N02201) are dual-certifiable wrought nickel materials. They differ only in the maximum carbon levels present—0.15% for Nickel 200 and 0.02% for Nickel 201. Nickel 200 plate is normally limited to service at...
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Nickel 200/201 Stainless Steel

General Properties

Nickel 200 (UNS N02200) and 201 (UNS N02201) are dual-certifiable wrought nickel materials. They differ only in the maximum carbon levels present—0.15% for Nickel 200 and 0.02% for Nickel 201.


Nickel 200 plate is normally limited to service at temperatures below 600ºF (315ºC), since at higher temperatures it can suffer from graphitization which can severely compromise properties. At higher temperatures Nickel 201 plate should be utilized. Both grades are approved under ASME Boiler and Pressure Vessel Code Section VIII, Division 1. Nickel 200 plate is approved for service up to 600ºF (315ºC), while Nickel 201 plate is approved up to 1250ºF (677ºC).


Both grades offer outstanding corrosion resistance to caustic soda and other alkalis. The alloys perform best in reducing environments but can also be used under oxidizing conditions that produce a passive oxide film. They both resist corrosion by distilled, natural water and flowing seawater but are attacked by stagnant seawater.


Nickel 200 and 201 are ferromagnetic and exhibit highly ductile mechanical properties across a wide temperature range.


Both grades are easily welded and processed by standard shop fabrication practices.


Chemical Analysis

Weight % (all values are maximum unless a range is otherwise indicated)

ElementNickel 200Nickel 201
Nickel (plus Cobalt)99.0 minimum99.0 minimum
Copper0.250.25
Iron0.400.40
Manganese0.350.35
Carbon0.150.02
Silicon0.350.35
Sulfur0.010.01


Physical Properties

Density

0.321 lbs/in3
8.89 g/cm3

Specific Heat

0.109 BTU/lb-°F (32—212°F)
456 J/kg-°K (0—100°C)

Modulus of Elasticity 78°F (26°C)

29.7 x 103 ksi
205 GPa (20°C)

 

Thermal Conductivity 212°F (100°C)

463 BTU-in/ft2-h-°F
66.5 W/m-°C

Melting Range

2615 – 2635°F
1435 – 1446°C

Electrical Resistivity

58 Ohm-circ mil/ft at 70°F
0.096 µΩ/m at 20°C


Mean Linear Expansion

Temperature RangeCoefficient of Expansion

°F°C10-6 in/in °Fµm/m °C
-423-2004.710.1
-300-1005.811.3
-200206.2
-1001006.313.3
020013.9
7030014.2
2004007.414.8
4005007.715.3
6006008.015.5
8007008.315.8
10008008.516.2
12009008.716.6
140010008.916.9
160011009.117.1
1800
9.3
2000
9.5

Mechanical Properties

Nickel 200/201, Typical Values at 70°F (21°C), Plate—Hot Rolled, Annealed

 Yield Strength
0.2% Offset
Ultimate Tensile
Strength
Elongation
in 2 inches
Hardness


 ksiMPaksiMPa%Brinell
(3000-kg)
Rockwell
B
Nickel 20015–40105–27555–80380–55060–4090–14045–73
Nickel 20112–3583–24050–70345–48560–40


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