Alloy 200
Equivalent designations
UNS N02200
DIN W. Nr. 2.4060, 2.4066
Form
ASTM
Rod and bar
B 160
Plate, sheet and strip
B 162, B 906
Seamless pipe and tube
B 161, B 829
Welded pipe
B 725, B 775
Welded tube
B 730, B 751
Welding fitting
B 366
Forging
B 564
Chemical composition
%
Ni
Fe
C
Mn
Si
S
Cu
min
99.0
max
0.40
0.15
0.35
0.35
0.010
0.25
Physical properties
Density
8.89 g/cm3
Melting range
1435-1446℃
Features: Nickel 200 is commercially pure wrought nickel. It is highly resistant to various reducing chemicals. It can also be used in oxidizing conditions that cause the formation of a passive oxide film, for instance its unexcelled resistance to caustic alkalis. Nickel 200 is limited to service at temperatures below 315℃, because at higher temperatures it suffers from graphitization which results in severely compromised properties. In that circumstance, Nickel 201 is used instead. It has a high Curie temperature and good magnetostrictive properties. Its thermal and electrical conductivities are higher than nickel alloys.
Applications: Useful for applications where maintaining product purity is considered such as handling of caustic alkalis, foods and synthetic fibers; electrical and electronic parts; aerospace and missile components; and chemical storage and shipping tanks.