| Customization: | Available |
|---|---|
| Type: | Seamless |
| Technique: | Hot Rolled |
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Stainless steel 15 - 5 PH, also known as XM-12 or UNS S15500, is a modification of 17-4 PH developed in the 1960s. It has a more refined microstructure obtained through the remelting process. This refined structure improves toughness of the material. UNS S15500 also has low temperature hardening, good fabrication properties and excellent corrosion resistance, which makes it suitable for many industries. It can be machined in the solution-annealed state or in final heat treat condition. The strength and ductility of UNS S15500 can be enhanced through heating the material at different temperatures.
UNS S15500 is a martensitic precipitation hardening type stainless steel. Martensitic stainless steels were designed to be corrosion resistant and hardened through heat treatment.
15-5 PH stainless steel is a martensitic precipitation-hardening stainless steel with approximately 15% Chromium and 5% Nickel. It has high strength, high hardness, and excellent corrosion resistance. Strength can be further increased by a single low temperature heat treatment. Compared to 17-4 PH, it offers better transverse toughness and ductility; better mechanical properties in larger cross-sections, and better forgeability. It is readily weldable. It can be machined in any of the several Thermal Conditions available to this grade.
The chemical composition of Grade 15-5 PH stainless steel is outlined in the following table.
| Element | Content (%) |
|---|---|
| Iron, Fe | 75 |
| Chromium, Cr | 14.48 |
| Nickel, Ni | 4.5 |
| Copper, Cu | 3.5 |
| Manganese, Mn | ≤1 |
| Silicon, Si | ≤1 |
| Nb + Ta | 0.3 |
| Carbon, C | ≤0.07 |
| Phosphorous, P | ≤0.04 |
| Sulfur, S | ≤0.03 |
| Grade | UNS | DIN | EN | AMS | ASTM | JIS | |
| 15-5PH | S15500 | - | 1.4545-1.4548 |
AMS 5862 |
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The mechanical properties of Grade 15-5 PH stainless steel are displayed in the following table.
| Properties | Metric | Imperial |
|---|---|---|
| Tensile Strength | 1380 MPa | 200000 psi |
| Yield Strength | 1275 MPa | 184900 psi |
| Modulus of Elasticity | 200 GPa | 29000 ksi |
| Elongation at Break | 10% | 10% |
| Hardness, Brinell | 420 | 420 |
| Hardness, Knoop | 451 | 451 |
| Hardness, Rockwell B | 104 | 104 |
| Hardness, Rockewell C | 44.2 | 44.2 |
| Hardness, Vickers | 445 | 445 |
| Charpy Impact | 10 J | 7.38 ft.lb |
The following are some of the major applications of Grade 15-5 PH stainless steel:
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