National Kwikmetal Service (NKS)

Model 201 -Stainless Steel

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Type 201 Stainless Steel is an austenitic chromium-nickel-manganese stainless steel which was developed to conserve nickel. Type 201 is a lower cost alternative to conventional Cr-Ni stainless steels such as 301 and 304. Nickel is replaced by additions of manganese and nitrogen. It is non-hardenable 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 201 can be substituted for Type 301 in many applications.

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PRODUCT FORMS:

Sheet, Strip

SPECIFICATIONS:

ASTM A240, A666

TYPICAL APPLICATIONS:

Typical applications for Types 201 are cookware, hose clamps, piston rings, transit car structural member, transit car roofing/siding, thermal window spacers, air bag containers, and truck trailer posts and door frames.

Element: Type 201

Carbon: 0.15x

Manganese: 5.5 – 7.5

Sulfur: 0.03X

Phosphorus: 0.060x

Silicon: 1.0 x

Chromium: 16 – 18

Nickel: 3.5 -5.5

Nitrogen: 0.25x