17-7 Stainless Steel Springs
Type 17-7 PH is a Chromium-Nickel-Aluminum, austenitic stainless steel with high strength and good corrosion resistance. It is the most formable of all PH grades and has the highest strength and hardness.
| Technical Specification | 17-7 PH |
|---|---|
| Nominal Composition |
Cr: 16.0 - 18.0 Ni: 6.5 - 7.5 Al: .75 - 1.5 |
| Density |
0.28 lb./in3 |
| Modulus of Elasticity (E) |
29.0 x 106 psi |
| Modulus of Rigidity (G) |
11.0 x 106 psi |
| Coefficient of Expansion |
8.5 µin/in.-°F (70°F) |
| Electrical Resistivity |
80.0 µΩ.cm |
| Thermal Conductivity |
117 Btu/(hr/ft2/in/oF) |
| Min Size |
0.003 in (0.080 mm) |
| Max Temp |
427oC (800oF) |
| Uses |
It is less magnetic than other PH grades and offers minimal distortion upon heat treatment |
