Nimonic C-263 (UNS N07263 / W.Nr. 2.4650) is a precipitation-hardenable nickel-chromium-cobalt alloy with an addition of molybdenum for solid-solution strengthening. It has high strength and corrosion resistance along with good formability and high-temperature ductility in welded structures. The alloy is especially suitable for sheet applications. Used in gas turbines for rings, casings, and various sheet fabrications.
Nimonic C263 Features
Good formability
High temperature ductility in welded structures
Nimonic C263 Applications
Nimonic C-263 is mainly used in gas turbine hot section components.
Nimonic C263 Specifications
| UNS | W. Nr | Trademark | GB | DIN | NF |
| N07263 | 2.4650 | Nimonic C-263 Nicrofer 5120 CoTi | GH4163 | 2.4650 | NCK20D ATG W0 |
Chemical Compositions of Nimonic C-263 Nickel Alloy
| Alloy | C | Si | Mn | P | S | Cr | Ni | Co | Mo | AI | Ti | Cu | B | Fe |
| Nimonic C-263 | 0.04-0.08 | ≤0.40 | ≤0.60 | ≤0.015 | ≤0.007 | 19.0-21.0 | Bal | 19.0-21.0 | 5.6-6.1 | 0.3-0.6 | 1.9-2.4 | ≤0.20 | ≤0.005 | Bal |
Typical Physical and Mechanical Properties (RT, Annealed)
| Density, g/cm3 | Melting Point, ℃ | Tensile Strength, MPa | Yield Strength, MPa | ELongation, % | Hardness, HRB |
| 8.36 | 1300-1355 | 1004 | 585 | 45 | / |
Nimonic C263 Product Forms and Standards
| Rod, Bar, Wire and Forgings | DIN 17752, DIN 17753, DIN 17754 |
| Plate, Sheet and Strip | DIN 17750, AMS5872 |
| Pipe and Tube | DIN 17751 |
| Welding Product | – |
| Others | DIN 17744 |