Stainless Steel 15-5
Material Notes: Stainless Steel 15-5 is a precipitation-hardening martensitic stainless steel which exhibits good corrosion resistance as well as transverse properties. This grade is appropriate for applications in which strength and toughness can be designed by controlling the temperate range during heat treatment.
 Applications: Valves, Parts of the Aircraft, Gears, Pump Components.
Specifications for Stainless Steel 15-5
| Parameter | Value |
|---|---|
| Chemical Composition | |
| Iron (Fe) | 71.91% - 79.85% |
| Chromium (Cr) | 14.0% - 15.5% |
| Nickel (Ni) | 3.5% - 5.5% |
| Copper (Cu) | 2.5% - 4.5% |
| Manganese (Mn) | 1.0% max |
| Silicon (Si) | 1.0% max |
| Carbon (C) | 0.07% max |
| Phosphorus (P) | 0.04% max |
| Sulfur (S) | 0.03% max |
| Niobium + Tantalum (Nb + Ta) | 0.15% - 0.45% |
| Mechanical Properties | |
| Tensile Strength | 1380 MPa (200,000 psi) |
| Yield Strength | 1275 MPa (184,900 psi) |
| Elastic Modulus | 196 GPa (28,427 ksi) |
| Elongation at Break | 10% |
| Hardness (Brinell) | 420 |
| Hardness (Rockwell C) | 44.2 |
| Thermal Properties | |
| Thermal Expansion Coefficient | 10.4 µm/m°C |
| Thermal Conductivity | 17.8 W/mK |
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