Stainless Steel - 15-5 PH
Description
15-5 PH stainless steel is a martensitic precipitation-hardening stainless steel that combines high strength with good corrosion resistance. It is particularly noted for its mechanical properties at elevated temperatures and is widely used in aerospace and other demanding applications.
Chemical Composition
The chemical composition of 15-5 PH stainless steel is as follows:
| Element | Percent by Weight |
|---|---|
| Carbon (C) | 0.07 max |
| Manganese (Mn) | 1.00 max |
| Phosphorus (P) | 0.040 max |
| Sulfur (S) | 0.030 max |
| Silicon (Si) | 1.00 max |
| Chromium (Cr) | 14.00 - 15.50 |
| Nickel (Ni) | 3.50 - 5.50 |
| Copper (Cu) | 2.50 - 4.50 |
| Columbium + Tantalum (Nb + Ta) | 0.15 - 0.45 |
Mechanical Properties (Annealed)
| Condition | UTS (ksi) | Yield Strength (ksi) | Elongation (%) | Hardness (Brinell) | Hardness (Rockwell) |
|---|---|---|---|---|---|
| A | 161 | 145 | 6 | 388 | C40 |
| H900 | 209 | 170 | 6 | 388 | C40 |
| H1025 | 155 | 125 | 8 | 331 | C35 |
| H1075 | 145 | 125 | 9 | 311 | C32 |
| H1150 | 135 | 105 | 11 | 277 | C28 |
Thermal & Physical Properties
Key thermal and physical properties include:
| Property | Value |
|---|---|
| Density (g/cm³) | 7.75 - 7.86 |
| Thermal Conductivity (W/m•K) | 17.9 (at 300°F) |
| Coefficient of Thermal Expansion (µm/m•K) | 6.0 - 6.6 (varies with temperature) |
Other Designations
Fabrication and Heat Treatment
15-5 PH stainless steel is supplied in the annealed condition (Condition A) and can be heat-treated to various conditions (H900, H1025, H1075, H1150, etc.) to achieve specific mechanical properties.
Heat Treatment Process
Applications
15-5 PH is commonly used in:
Supplied Forms
15-5 PH stainless steel is available in various forms, including:
Features
DIN Number
The DIN designation for 15-5 PH stainless steel is X5CrNiCuNb15-5.
This datasheet provides a detailed overview of 15-5 PH stainless steel, highlighting its composition, properties, and applications, ensuring a comprehensive understanding of this versatile material.