Stainless Steel Spring Materials
| Material | AISI 302/304 | AISI 316 | 17-7 PH |
|---|
| | ASTM A 313 | ASTM A 313 | ASTM A 313 (631) |
| Nominal Analysis | Cr -- 17.0 - 19.0% | Cr -- 16.0 - 18.0% | Cr -- 16.0 - 18.0% |
| | Ni -- 8.0 - 10.0% | Ni -- 10.0 - 14.0% | Ni -- 6.5 - 7.5% |
| | | Mo -- 2.0 - 3.0% | Al -- .75 - 1.5% |
| Minimum Tensile Strength | 125-325 | 110-245 | Cond CH |
| | | | 235-335 |
| Modulus of Elasticity E | 28 | 28 | 29.5 |
| psi x 103 | | | |
| Design Stress % Minimum | 30-40 | 40 | 45 |
| Tensile | | | |
| Modulus in Torsion | 10 | 10 | 11 |
| G psi x 106 | | | |
| Maximum Temp. °F | 550 | 550 | 650 |
| Maximum Temp. °C | 288 | 288 | 343 |
| Rockwell Hardness | C35-45 | C35-45 | C38-57 |
| Method of Manufacture | Cold drawn, general purpose, corrosion and heat resistant. Magnetic in spring temper. | Cold drawn. Heat resistant and better corrosion resistance than 302. Magnetic in spring temper. Slightly magnetic in spring temper. | Cold drawn & precipitation hardened after fabrication. High strength and general purpose corrosion resistance |
| Chief Uses | | | |
| Special Properties | | | |
