STEP 1
◆ Environmental Resistance
Resistant to both oxidizing and reducing atmospheres up to 2100°F (1150°C). seats, cutting tools and friction-prone parts, effectively prolonging the service life of key equipment.
Stellite 31 Cobalt Base Superalloy
Large-Scale Superalloys R&D And Manufacturing BaseStellite 31 Cobalt Base Superalloy chemical composition: Cr 26%, Ni 10.5%, W 7.5%, C 0.5%, balance Co.
It delivers high tensile and creep properties, and withstands oxidizing and reducing environments up to 1150°C (2100°F).
Stellite 6 Alloy Basic Introduction
Stellite 31 (UNS R30031) is a Cobalt-base superalloy (CoCrNiW) featuring outstanding wear and corrosion resistance, excellent stress-rupture properties, and good resistance to thermal and mechanical shock.
It is widely applied in the hottest sections of industrial gas turbines.
Stellite 31 Alloy Chemical Composition
| Element | Composition (%) |
|---|---|
| Cobalt (Co) | Balance |
| Chromium (Cr) | 24.5-26.5 |
| Tungsten (W) | 7.0-8.0 |
| Carbon (C) | 0.45-0.55 |
| Nickel (Ni) | 9.5-11.5 |
| Silicon (Si) | Max 1.0 |
| Iron (Fe) | Max 2.0 |
| Manganese (Mn) | Max 1.0 |
Stellite 6 Alloy Physical Properties
| Mechanical | Values |
|---|---|
| Yield Rp0.2 (MPa) | ≥563 |
| Tensile Rm(MPa) | ≥164 |
| Impact KV/Ku (J) | 14 |
| Elongation A(%) | 12 |
| Reduction in cross section on fracture Z(%) | 14 |
Stellite 31 Alloy Features
Applications of Stellite 31 SuperAlloy
◆ Gas Turbines
Used in the hottest sections of aircraft and industrial gas turbine engines exposed to hot gas erosion.
◆ Industrial Furnaces
Utilized for furnace working tools and components requiring structural integrity under heavy thermal and mechanical loads.
