Stainless Steel – Grade 201

Chemical Composition

The following table shows the chemical composition of grade 201 stainless steel.

Element	Content (%)
Iron, Fe	72
Chromium, Cr	16.0 - 18.0
Manganese, Mn	5.50 - 7.50
Nickel, Ni	3.50 - 5.50
Silicon, Si	1.0
Nitrogen, N	0.25
Carbon, C	0.15

Physical Properties

The physical properties of grade 201 stainless steel are given in the following table.

Properties	Metric	Imperial
Density	7.86 g/cm3	0.284 lb/in³

Mechanical Properties

The mechanical properties of annealed grade 201 stainless steel are displayed in the following table.

Properties	Metric	Imperial
Tensile strength (transverse at room temperature)	685 MPa	99400 psi
Tensile strength (longitudinal at room temperature)	696 MPa	101000 psi
Yield strength (transverse at room temperature)	292 MPa	42400 psi
Yield strength (longitudinal at room temperature)	301 MPa	43700 psi
Compressive yield strength	365 MPa	52900 psi
Elastic modulus	197 GPa	28573 ksi
Poisson's ratio	0.27-0.30	0.27-0.30
Elongation at break (longitudinal at room temperature)	56%	56%
Elongation at break (transverse at room temperature)	62.50%	62.50%
Hardness, Rockwell B (transverse at room temperature)	85	85
Hardness, Rockwell B (longitudinal at room temperature)	85	85

Thermal Properties

The following table outlines the thermal properties of grade 201 stainless steel.

Properties	Metric	Imperial
Thermal expansion co-efficient (@ 20-100°C/68-212°F)	16.6 µm/m°C	9.22 µin/in°F
Thermal conductivity (@ 100°C/212°F)	16.3 W/mK	113 BTU in/hr.ft².°F