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Product Overview
INTRODUCTION TO 15-5 PH STAINLESS STEEL / UNS S15500 / ASTM A564
MOKSH TUBES & FITTINGS LLP is a trusted supplier, exporter, importer, and stockist of high-quality 15-5 PH Stainless Steel products, including Pipes & Tubes, Pipe Fittings, Flanges, Fasteners, Sheets & Plates, Coils, Wires, Round Bars, Flat Bars, Angles, Channels, Welding Rods, Wire Mesh, and Custom Fabricated Components.
15-5 PH (Precipitation Hardening) Stainless Steel, designated as UNS S15500, is a martensitic chromium–nickel–copper stainless steel designed for high strength, excellent corrosion resistance, and superior toughness. Developed as an improvement over 17-4 PH, this alloy offers enhanced transverse toughness and more uniform mechanical properties than traditional precipitation-hardening grades.
The alloy can be hardened through a simple low-temperature aging process without distortion or scaling, allowing engineers to achieve the required strength levels efficiently. With its balance of strength, ductility, and corrosion resistance, 15-5 PH Stainless Steel remains a versatile solution for both structural and critical component applications.
Chemical Composition of 15-5PH stainless steel
| Element | Composition (%) |
|---|---|
| Chromium (Cr) | 14.00 – 15.50 |
| Nickel (Ni) | 3.50 – 5.50 |
| Copper (Cu) | 2.50 – 4.50 |
| Manganese (Mn) | 1.00 max |
| Silicon (Si) | 1.00 max |
| Columbium + Tantalum (Cb + Ta) | 0.15 – 0.45 |
| Carbon (C) | 0.07 max |
| Phosphorus (P) | 0.040 max |
| Sulfur (S) | 0.030 max |
| Iron (Fe) | Balance |
Technical Composition
Physical Properties of 15-5PH stainless steel
| Property | Value |
|---|---|
| Density | 7.78 g/cm³ |
| Melting Point | 1400–1450 °C (2550–2640 °F) |
| Modulus of Elasticity | 200 GPa |
| Thermal Conductivity | 18.4 W/m·K at 100 °C |
| Specific Heat | 460 J/kg·K at 0–100 °C |
| Electrical Resistivity | 0.80 µΩ·m at 20 °C |
Mechanical Properties of 15-5PH stainless steel
| Property | Metric | Imperial |
|---|---|---|
| Tensile Strength | 1170 MPa | 170,000 psi |
| Yield Strength (0.2% Offset) | 1070 MPa | 155,000 psi |
| Elongation at Break (50 mm) | 12–15 % | 12–15 % |
| Reduction of Area | 45 % | 45 % |
| Hardness, Rockwell C | 38–44 HRC | 38–44 HRC |
Products in 15-5 PH Stainless Steel
MOKSH TUBES & FITTINGS LLP, with deep expertise in high-performance stainless steels and an extensive global sourcing network, offers a comprehensive range of 15-5 PH Stainless Steel products. These products are ideally suited for applications requiring high strength, corrosion resistance, and reliability in demanding sectors such as Aerospace, Petrochemical, Power Generation, and Marine Industries.
We offer 15-5 PH Stainless Steel in a wide range of product forms to meet industrial demands.
