Combines high strength of martensitic stainless with corrosion resistance of austenitic grades. The premium choice for aerospace, medical, and high-performance applications.
Yield strength up to 1310 MPa (H900 condition). Significantly stronger than 300-series stainless while maintaining corrosion resistance.
Better corrosion resistance than 400-series martensitic stainless. Comparable to 304 in many environments.
Precipitation hardening at low temperatures (480-620°C) minimizes distortion. No quenching required.
Machines better than most stainless steels in solution-treated (Condition A) state before final hardening.
| Chromium (Cr) | 15.0 - 17.5 |
| Nickel (Ni) | 3.0 - 5.0 |
| Copper (Cu) | 3.0 - 5.0 |
| Niobium (Nb) | 0.15 - 0.45 |
| Carbon (C) | ≤ 0.07 |
| Tensile Strength | 1380 MPa |
| Yield Strength | 1310 MPa |
| Elongation | 10% |
| Hardness | 40-45 HRC |
| Elastic Modulus | 197 GPa |
H900 (480°C): Highest strength | H1025 (550°C): Balanced properties | H1150 (620°C): Maximum toughness
Machine in Condition A (solution-treated) before final heat treatment for best results. Harder conditions require slower speeds and carbide tooling.
| Turning (Carbide) | 50-80 m/min |
| Milling (Carbide) | 40-70 m/min |
| Drilling | 15-25 m/min |
High-strength stainless steel machining for aerospace, medical, and critical applications.