Refractaloy 26 (W.Nr. 1.2888)
Refractaloy 26 (W.Nr. 1.2888) is a high heat resistant alloy of nickel, chromium, cobalt and iron, possessing high creep and endurance strengths along with high ductility at elevated temperatures. It responds to precipitation-hardening heat treatment.
Equivalent Grades
Trademark | GB | GOST | ASTM | UNS | DIN | W.Nr. | NF | BS | JIS | SS |
Refractaloy 26 | GH2026 | – | Refractaloy 26 | – | – | 1.2888 | – | – | – | – |
Chemical Composition, %
Alloy | C | Si | Mn | P | S | Cr | Ni | Co | Mo | Al | Ti | Fe |
Refractaloy 26 | ≤0.08 | ≤1.5 | ≤1.0 | ≤0.03 | ≤0.03 | 16.0-20.0 | 35.0-39.0 | 18.0-22.0 | 2.5-3.5 | ≤0.25 | 2.5-3.0 | Bal |
Typical Physical and Mechanical Properties (RT, Solution annealed)
Density, g/cm3 | Melting Point, ℃ | Tensile Strength, MPa | Yield Strength, MPa | ELongation, % | Hardness, HRB |
9.14 | 1300-1330 | 925 | 610 | 10 | / |
Available Products and Specifications
Rod, Bar, Wire and Forgings | – |
Plate, Sheet and Strip | – |
Pipe and Tube | – |
Welding Product | – |
Others | – |
Features
The composite properties of the alloy are superior, with excellent tensile resistance, force relaxation and creep resistance, no notch sensitivity.
Applications
- Fasteners for steam turbines
- Bolt
- Air seal spring sheet
- Sealing ring
- Pin