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NI200/201
UNS Number UNS N02200, UNS N02201
Alloy 200, Ni200; Alloy 201, Ni201
Nickel 200 and Nickel 201 are solid solution strengthened, commercially pure wrought materials with good mechanical properties over a wide range of temperatures and excellent resistance to many corrosives, in particular hydroxides. Nickel 201 was a modification of 200 to control carbon (.02 max) which keeps it from being embrittled by intergranular precipitates at temperatures of 600째 F to 1400째 F in many processes. Typically, the elemental restrictions of both, nickel 200 and nickel 201, are combined into one, dual-certified chemistry resulting in a single alloy with the desired characteristics of both alloys, Nickel 200/201.
Nickel 200 (UNS N02200) Chemical Composition, %
| Ni | Fe | Cu | C | Mn | S | Si |
| 99.0 min | .40 max | .25 max | .15 max | .35 max | .01 max | .35 max |
Nickel 201 (UNS N02201) Chemical Composition, %
| Ni | Fe | Cu | C | Mn | S | Si |
| 99.0 min | .40 max | .25 max | .02 max | .35 max | .01 max | .35 max |
