Material Notes:
Type 202 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.
| Chemical Composition |
| 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 |
| Physical Properties |
| Density (lb./ in^2) @ RT |
|
0.283 |
| Modulus of Elasticity in Tension (psi x 10^6) |
|
28.6 |
| Specific Heat (BTU/o F/lb.) |
32 to 212 °F |
0.12 |
| Thermal Conductivity (BTU/hr/ft^2/ft) |
212°F |
9.4 |
| Mean Coefficient of Thermal Expansion (in. x 10^-6 per °F) |
32 to 212°F |
8.7 |
| |
32 to 600°F |
9.7 |
| |
32 to 1,000°F |
10.2 |
| Electrical Resistivity (micro ohms - cm) |
at 70oF |
69 |
| Melting Point Range (oF) |
|
2550/2650 |
| Oxidation Resistance - Continuous Service(oF) |
|
1550 |
| Oxidation Resistance - Intermittent Service(oF) |
|
1500 |
