DEFSTAN 95-14 (Grade S144): High-Strength Aerospace Stainless Steel
3S144 is a British aerospace grade, precipitation hardenable stainless steel. It is widely used in the aerospace industry benefiting from a combination of strength and moderate corrosion resistance. BS S143 and BS S145 are chemically identical. S144 is supplied in bar form with heat treatment applied.
Properties
General
| Property | Temperature | Value | Comment |
|---|---|---|---|
Density | 20.0 °C | 7.9 - 8.2 g/cm³ | Typical for Austenitic Stainless Steel |
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Elastic modulus | 20.0 °C | 195 GPa | Typical for Austenitic Stainless Steel |
Elongation A50 | 20.0 °C | 12 % | |
Hardness, Brinell | 20.0 °C | 341 [-] | |
Poisson's ratio | 20.0 °C | 0.3 [-] | Typical for Austenitic Stainless Steel |
Shear modulus | 20.0 °C | 77 GPa | Typical for Austenitic Stainless Steel |
Tensile strength | 20.0 °C | 1130 - 1330 MPa |
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
Coefficient of thermal expansion | 20.0 °C | 1.7E-5 - 1.9E-5 1/K | Typical for Austenitic Stainless Steel |
Melting point | 1375 - 1450 °C | Typical for Austenitic Stainless Steel | |
Specific heat capacity | 20.0 °C | 440 J/(kg·K) | Typical for Austenitic Stainless Steel |
Thermal conductivity | 20.0 °C | 11 - 21 W/(m·K) | Typical for Austenitic Stainless Steel |
Electrical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Electrical resistivity | 20.0 °C | 8.5E-7 Ω·m | Typical for Austenitic Stainless Steel |
Chemical properties
| Property | Value |
|---|---|
Carbon | 0.08 % |
Chromium | Balance |
Copper | 1.2 - 2 % |
Manganese | 1 % |
Molybdenum | 1.2 - 2 % |
Nickel | 5 - 5.8 % |
Niobium | 0.1 - 0.4 % |
Phosphorus | 0.04 % |
Silicon | 0.6 % |
Sulfur | 0.03 % |
Metal
- Stainless Steel: Properties, Manufacturing, and Future Applications
- How Stainless Steel Is Made: From Raw Materials to Finished Products
- Choosing the Right Stainless Steel Grade: A Practical Guide
- Understanding Stainless Steel: Properties, Benefits, and Applications
- How to Keep Your Stainless Steel Rust-Free and Shiny
- Effective Stainless Steel Cleaning & Passivation: Protect Against Rust & Corrosion
- Carbon Steel vs Stainless Steel: Choosing the Right Alloy for Your Project
- Steel vs. Stainless Steel: Choosing the Right Metal for Your Project
- Mild Steel vs Stainless Steel: Key Differences Explained
- Copper-Infused Antibacterial Stainless Steel: Enhanced Safety & Corrosion Resistance