PH 13-8 Mo Type 1 VIM / VAR aircraft-quality stainless is a martensitic precipitation/age-hardening stainless steel capable of high strength and hardness along with good levels of resistance to both general corrosion and stress-corrosion cracking. In addition, the alloy exhibits good ductility and toughness in large sections in both the longitudinal and transverse directions. The excellent properties of PH 13-8 Mo stainless are obtained through close control of chemical composition and microstructure plus specialized melting which reduces impurities and minimizes segregation. Compared to other ferrous-based materials, this alloy offers a high level of useful mechanical properties under severe environmental conditions. (UNS:S13800)
Element | Min | Max |
---|---|---|
Carbon, C | – | 0.05 |
Manganese, Mn | – | 0.1 |
Silicon, Si | – | 0.1 |
Sulfur, S | – | 0.008 |
Phosphorus, P | – | 0.01 |
Chromium, Cr | 12.25 | 13.25 |
Molybdenum, Mo | 2 | 2.5 |
Nickel, Ni | 7.5 | 8.5 |
Aluminum, Al | 0.9 | 1.35 |