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Technical Information for 301
| Alloy | UNS Number | SAE Number |
| 301 | S30100 | 30301 |
GENERAL PROPERTIES
Type 301 is an austenitic stainless steel with a nominal composition of 17 percent chromium and 7 percent nickel. The high strengths of this grade of steel in the six available conditions or tempers, its resistance to atmosphere corrosion and its bright, attractive surface make it an excellent choice for decorative structural applications. Automobile molding and trim, wheel covers, conveyor belts, kitchen equipment, roof drainage systems, hose clamps, springs, truck and trailer bodies, railway and subway cars are some of the major applications for this versatile grade. By varying the chemical composition within the limits set by the ASTM specifications and by temper rolling, a broad range of magnetic and mechanical properties can be obtained for a variety of applications.
RESISTANCE TO CORROSION
Type 301 is resistant to a variety of corrosive media. However, the corrosion properties are not as good as the 18-8 chromium-nickel steels. Its susceptibility to carbide precipitation during welding restricts its use in many applications in favor of Types 304 or 304L.
PHYSICAL PROPERTIES
| Melting Point | Density | Specific Gravity | Modulus of Elasticity in Tension |
| 2550-2590° F 1399-1421° C |
0.29 lb/in³ 8.03g/cm³ |
8.03 | 28 X 106 psi 193 Gpa |
MECHANICAL PROPERTIES
| Alloy | Temper | Tensile Strength Minimum (psi) |
Tensile Strength Minimum 0.2% offset (psi) |
% Elongation in 2" Minimum |
Notes |
|---|---|---|---|---|---|
| 301 | 1/4 Hard | 125,000 | 75,000 | 25 % | - |
| 301 | 1/2 Hard | 150,000 | 110,000 | 15 % | - |
| 301 | Full Hard | 185,000 | 140,000 | 8 % | - |
CHEMICAL PROPERTIES
| Alloy | C | Mn | P | S | Si | Cr | Ni | Mo | Cu | N | Other |
| 301 | .15 | 2.00 | .045 | .030 | .75 | 16.00 - 18.00 | 6.00 - 8.00 | .75 | .75 | .10 | - |
WELDING
N/A
HEAT TREATMENT
Austenitic stainless steels cannot be hardened by heat treatment.
