201 Stainless Steel Sheet

Description:

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.

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.

Chemical Composition:

Mechanical Properties:

Physical Properties:

Processing:

The annealing temperature for Type 201 is between 1850-2000°F. Rapid cooling  through the carbide precipitation range (1500 – 800 °F) is necessary to keep the  carbides in solution and prevent sensitization. Type 201 is not hardenable by  thermal treatment; it is only hardenable by cold working.

Forming:

Type 201 has similar bending, forming and drawing characteristics to Type 301  stainless steel

Welding:

Type 201 can be welded by all conventional methods applied to 18 percent  chromium, 8 percent nickel steels. Filler metal of the conventional  chromium-nickel analyses can be used. Like other austenitic stainless steels  where carbon is not controlled below 0.03%, Type 201 is susceptible to  intergranular corrosion in the weld heat affected zone.

Corrosion:

Type 201 is resistant to a wide variety of mild to moderately corrosive  environments. It has corrosion resistance approaching that of Types 301and has  been successfully substituted for 304 in many mild environments.