HAYNES 263
HAYNES 263
List of Features
Haynes 263
HAYNES® 263 alloy (UNS N07263) is an age-hardenable nickel-cobalt-chromium-molybdenum alloy designed specifically to combine good age-hardened strength properties with excellent fabrication characteristics in the annealed condition. HAYNES® 263 alloy exhibits excellent intermediate temperature tensile ductility, and is not normally subject to strain age cracking problems common for gamma prime strengthened alloys. Its strength at elevated temperature is not quite as high as materials such as HAYNES® 282® alloy, Waspaloy alloy, or R-41 alloy. However, it is much easier to form or weld than Waspaloy alloy and R-41 alloy. Because HAYNES® 282® alloy exhibits superior tensile, creep-rupture, and low cycle fatigue strength than HAYNES® 263 alloy and has significantly greater fabricability than Waspaloy and R-41 alloys, it is replacing HAYNES® 263 alloy in many applications.
%Chemical Composition
| Mn | Mo | Cr | Fe | Co | Ni |
| 0.4 | 6 | 20 | (max) 0.7 | 20 | Balance |
| Zr | B | C | Ti | Al | Si |
| (max) 0.04 | (max) 0.005 | 0.06 | (max) 2.4 | (max) 0.6 | 0.2 |
Density & Melting Range
| Melting Range (Celsius) | Density |
| 1355 - 1300 | (g/cm) 8.36 |
Hardness
| Hardness | Form |
| (HRBW) 98 | Sheet |
| (HRC) 31 | Plate |
Mechanical Properties
| % Elongation | Yield Strength (MPa) | Tensile Strength (MPa) | Form |
| 57.5 | 339 | 806 | Sheet |
| 59.3 | 329 | 797 | Plate |
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