Stainless steels are high-alloy steels, which have high corrosion resistance when compared to other steels due to the presence of large amounts of chromium. Based on their crystalline structure, they are further divided into ferritic, austenitic, and martensitic steels. Another group of stainless steels are known as precipitation-hardened steels. They are the combination of martensitic and austenitic steels.
Grade 201 stainless steel has good formability, corrosion resistance, and fabricability. It is similar to that of 301 stainless steel. The following datasheet gives more details about grade 201 stainless steel.
The following table shows the chemical composition of grade 201 stainless steel.
16.0 - 18.0
5.50 - 7.50
3.50 - 5.50
The physical properties of grade 201 stainless steel are given in the following table.
The mechanical properties of annealed grade 201 stainless steel are displayed in the following table.
Tensile strength (transverse at room temperature)
Tensile strength (longitudinal at room temperature)
Yield strength (transverse at room temperature)
Yield strength (longitudinal at room temperature)
Compressive yield strength
Elongation at break (longitudinal at room temperature)
Elongation at break (transverse at room temperature)
Hardness, Rockwell B (transverse at room temperature)
Hardness, Rockwell B (longitudinal at room temperature)
The following table outlines the thermal properties of grade 201 stainless steel.
Thermal expansion co-efficient (@ 20-100°C/68-212°F)
Thermal conductivity (@ 100°C/212°F)
113 BTU in/hr.ft².°F
Grade 201 stainless steel can be formed using all commonly employed forming methods and pressures similar to that of 300 series stainless steels.
Grade 201 stainless steel can be welded using all conventional welding techniques.
Grade 201 stainless steel is hot worked at 1149-1232°C (2100-2250°F).
Grade 201 stainless steel is annealed at 1010-1093°C (1850-2000°F). Temperature should not be exceeded above 2000°F in order to avoid scaling. It is rapidly cooled to prevent crystallization of carbides.
Grade 201 stainless steel is used in structural members, different kinds of severely formed parts, and siding and roofing for railway cars and trailers.