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NICKEL
200 / 201 Nickel 200 and Nickel 201 are solid solution strengthened, commercially pure wrought materials. Typically, the elemental restrictions of both alloys are combined into one, dual-certified chemistry resulting in a single alloy with the desired characteristics of both alloys. Applications where Nickel 200/201 can be used include chemical processing and storage, synthetic fiber production, and processes where sodium hydroxide and fluorine is used. Other applications include aerospace and defense as well as food processing. Nickel 200/201 has exceptional resistance to caustic alkalies at various temperatures and concentrations. When operating temperatures are expected to exceed 600°F, carbon content becomes critical. The lower carbon content of Nickel 201 makes the material resistant to graphitization and therefore less subject to embrittlement. Pressure vessels and vessel components can be constructed from Nickel 201 according to the ASME Boiler and Pressure Vessel Code, Section VIII, Division 1 for use up to 1250°F.
Resistance to Corrosion Both Nickel 200 and 201 offer corrosion resistance in reducing and neutral media as well as in oxidizing atmospheres provided that the oxidizing media allows the formation of a passive oxide film. This oxide film accounts for the materials excellent resistance in caustic environments.
Mechanical Properties
Room Temperature Properties of Various Products Product
Form
Condition
Tensile (ksi) 0.2%
Yield (ksi)
Elongation (%)
Hardness (HRB) Rod
& Bar
Hot Finished
60 to 85
15 to 45
55 to 35
45 to 80 Rod & Bar
CD/Annealed or
55 to 75
15 to 30
55 to 40
45 to 70 Hot-Finished/Annealed Plate
Hot-Rolled/Annealed 55
to 80
15 to 40
60 to 40
45 to 75 Sheet
Annealed
55 to 75
15 to 30
55 to 40
70 Max. Tube
& Pipe Seamless Annealed
55 to 75
12 to 30
60
to 40
70 Max.
Chemical Composition Ni..............99.0 Min. Si.................0.35 Max. Fe...............0.40 Max. Cu...............0.25 Max. C................0.15 Max. S..................0.01 Max. Mn.............0.35 Max
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Nickel Steel
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