13Cr-8Ni austenitic stainless steel is a chromium-nickel alloy strengthened by aluminum and molybdenum additions, designed to deliver high strength while maintaining austenitic phase stability at elevated temperatures. This variant bridges precipitation-hardening stainless steels and conventional austenitic grades, making it suitable for applications requiring both corrosion resistance and strength in the 300–500 °C operating window. Engineers select this composition for demanding aerospace and power generation environments where conventional 300-series austenitic stainless steels would be insufficient, and where martensitic or duplex stainless alternatives introduce brittleness or processing constraints.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Elongation at Break(εf) | 18.30 | - | — | ||
Ultimate Tensile Strength(σUTS) | 1.334 | GPa | — | ||
Yield Strength (0.2% offset)(σy) | 1.277 | GPa | — |