Stainless Steel, 200 Series

The 200 Series Stainless Steels possess mechanical and corrosion resisting properties similar to their corresponding 300 Series materials. They also exhibit higher hardness and yield strength as well as excellent ductility and superior creep properties at elevated temperatures and are usually non-magnetic. These alloys were originally developed to conserve nickel as compared to the 300 Series by replacing nickel with manganese at a ratio of 2% manganese for each percent of nickel replaced.

Type 201 Type 201 (UNS S 20100) is an austenitic chromium-nickel-manganese stainless steel which was developed to conserve nickel. It is nonhardenable by thermal treatment but may be cold worked to high tensile strengths. Type 201 is essentially nonmagnetic in the annealed condition and becomes magnetic when cold worked. Type 201LN Type 201LN is an austenitic chromium-nickel-manganese stainless steel alloy which was developed to have mechanical properties higher than those typically obtained in Types 304 and 301. It is non-hardenable by thermal treatment but can be cold worked to high yield and tensile strengths. Type 201LN is essentially non-magnetic in the annealed condition and becomes magnetic when cold worked. This grade has a high degree of toughness down to cryogenic temperatures.

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