Alloy263 superalloy is Ni-Cr-Co base precipitation hardened deformed superalloy, the use temperature can reach 850℃. The alloy has good oxidation resistance under 800℃, high yield strength, high creep strength, small strain aging crack tendency, good cold and heat fatigue resistance. The alloy has satisfactory formability and weldability. It is suitable for making plate welded structural parts and bearing parts of main combustion chamber and afterburner on the aircraft engine.
Process Performance and Requirements
Vacuum Induction Furnace(VIM) and Electroslag Remelting Furnace(ESR)
- Product Chemical Composition
| Grade | C | Cr | NI | Co | Ai | Ti | Fe | B |
| Alloy263 | 0.04-0.08 | 19-21 | Rem | 19-21 | 5.6-6.1 | 0.3-0.6 | 1.9-2.4 | ≤0.7 |
| Cu | Ag | Bi | Pb | Si | Mn | S | P |
| ≤0.2 | ≤0.005 | ≤0.001 | ≤0.002 | ≤0.005 | ≤0.4 | ≤0.6 | ≤0.007 |
- Product Physical Property
| Density | p=8.35g/cm3 |
| Melting Point | 1320℃~1375℃ |
| Magnetic Energy | Nil |
- Heat Treatment Institution
Solution Treatment:1150℃士10℃;Aging treatment:800℃±10℃×8h/AC
a) Forgings, rings,Solid solution holding time(1.5～2.5)h.hydrocooling；
b) Pipe,Solid solution holding time≤15min,Air cooling or proper cooling；
e) Plate and Strip,Solid solution holding time:<4mm.(5～15)min.air cooling:4mm<δ≤10mm,≤30min,Air cooling or proper cooling &>10mm,≤120min,air cooling；
d) Hot rolled and forged bar,Solid solution holding time:d<8mm,30min,Water cooling (air cooling or oil cooling);>sm,Water cooling (air cooling or oil cooling)
- Product Mechanical Property
| Standard Number | Variety | Heat Treatment | θ/℃ | Tensile Property | Creep Property | Room Temperature Hardness(HV) |
| MPa | MPa | % | MPa | t/h | % |
| GJB 3165A | Hot-rolled and Forged bar | Standard | 780 | ≧540 | ≧400 | ≧12 | 120 | 50 | ≤0.10 | ---- |
| GJB 1952A | Cold-rolled Plate | Non-welding | Sosoloid +Welding +Aging | 780 | ≧540 | ≧400 | ≧9 | 116 | 50 | ≤0.10 | HV≤230 |
| Welding | Standard | ≧465 | --- | ≧5 |
| GJB 3317A | Hot-rolled Plate | Standard | 780 | ≧540 | ≧400 | ≧9 | 120 | 50 | ≤0.10 | HV≤250 |
| GB/T 15062 GJB 2297A | Cold drawn(rolled) seamless pipe | <0.5 | Standard | 780 | ≧540 | --- | --- | 120 | 50 | ≤0.10 | HV≤230 |
| ≧0.5 | ≧540 | ≧400 | ≧9 |
| GJB 5301 | Ring | Standard | 780 | ≧540 | ≧400 | ≧12 | 120 | 50 | ≤0.10 | HV≤225 |
| Cold-drawn Wire | ¢0.3~¢18mm(Delivery in rolls or trays) |
| Hot-Rolling Wire | ¢5.5~¢20mm(Delivery in rolls) |
| Strip | thickness 0.1~4.5*width 6~350mm(Supply in rolls or straight strips) |
| Smooth Forged Rod on a Lathe | ¢60~350mm,L800-2500mm |
| Hot-rolled Burnishing | ¢20~80mm,L1000-5000mm |
| Cold Drawn and Burnishing | ¢2.5~18mm,L1000-8000mm |
| Seamless Tube | ¢1~275mm,wall thickness 0.2~30,L1000-8000mm |
