This alloy is air melted nickel-base alloy, was developed by RollsRoyce (1971) Ltd. to provide a sheet material which could be readily fabricated and would offer improved ductility in welded assemblies to replace NIMONIC alloy 80A.It was designed as sheet material to meet specific design criteria in terms of proof stress and creep strength. It is now available in all standard forms.The welding techniques for this alloy are similar to those in common use for other age -hardenable nickelbase alloys. uring salvage welding operations, a preweld heat-treatment is not necessary on age-hardened assemblies but a subsequent age -hardening treatment is desirable after all salvage welding is completed.Material will age in service if temperatures are above 750 degree.
Nimonic 263 Chemical Composition| C | Cr | Ni | Fe | Mo | Cu | Al | Ti |
| 0.04-0.08 | 19.0-21.0 | balance | ≦0.7 | 5.6-6.1 | ≦0.2 | ≦0.6 | 1.9-2.4 |
| Co | Bi | B | Mn | Si | S | Ag | Pb |
| 19.0-21.0 | ≦0.0001 | ≦0.005 | ≦0.6 | ≦0.4 | ≦0.007 | ≦0.0005 | ≦0.002 |
| Density （g/cm3） |
Melting point （℃） |
Specific heat capacity （J/kg·℃） |
Electric resistivity （Ω·cm） |
Thermal expansion coefficient （20-100℃）/K |
| 8.36 | 1300-1355 | 461 | 115×10E-6 | 10.3×10E-6 |
| Test temperature ℃ |
Tensile strength MPa |
Yield strength (0.2yield point)MPa |
Elongation % |
Shrinkage of area % |
Kinetic Young’s Modulus GPa |
| 20 | 1004 | 585 | 45 | 41 | 224 |
| 300 | 880 | 505 | 45 | 50 | 206 |
| 600 | 819 | 490 | 43 | 50 | 185 |
| 900 | 232 | 145 | 34 | 58 | 154 |
| 1000 | 108 | 70 | 69 | 72 | 142 |
Round bars/Flat bars/Hex bars, Size From 8.0mm-320mm, Used for bolts,fastners and other spare parts
Supply in welding wire and spring wire in coil form and cut length.
Widths up to 1500mm and lengths up to 6000mm,Thickness from 0.1mm to 100mm.
Standards size and customized dimension can be produced by us with small tolerance
Soft condition and hard condition with AB bright surface, width up to 1000mm
Forging Ring or gasket,size can be customized with bright surface and precision tolerance
• High-strength alloy, precipitation hardening.
• The formability of the alloy in the field of welding application is good
• Excellent ductility.
Nimonic 263 Applications :
Suitable for manufacturing steel structure and aircraft engines and gas turbine components.