Alloy686
High-Temp SteelAlloy686
High-Mo Ni-base alloy. (UNS N06686; equiv Alloy 686 / UNS N06686). Nominal values—confirm mill certificate.
Chemical Composition (%)
| CR | 14.5 |
|---|---|
| MO | 15 |
| FE | 4 |
| W | 3 |
Mechanical Properties
Tensile:≥790 MPa;Yield:≥355 MPa;Elong:≥40%
Applications
镍钼铬耐强腐蚀（含氯）。,Plate
Available Forms
Heat- and creep-resistant steel for elevated-temperature service with stable strength and oxidation resistance. Used in furnace parts, exhaust manifolds, turbine components, boiler tubes and engine valves.
Uses
Normally used in the solution-annealed or precipitation-hardened condition; stabilise/age per the grade (e.g., 650–800 °C ageing). Avoid long exposure in the sigma/475 °C embrittlement ranges.
Heat Treatment
Maintain the recommended heat-treatment envelope; prolonged time in embrittlement ranges reduces ductility. Use descaling/protective atmosphere to limit scaling.
Precautions
UNS N06686 Alloy686 / Alloy 686 / UNS N06686
Comments 0