Nickel- and iron–nickel-based superalloys for turbine, furnace and high-temperature process service.
The GH series and the nickel-based 600-family alloys are specified where the part has to keep its strength above 600 °C, or survive oxidation, carburisation and thermal cycling. We machine them into flanges, fittings, bar, rings and shaped forgings from forged or rolled stock.
Because these grades work-harden quickly and are sensitive to heat treatment, the forging route and the annealing cycle are fixed per heat rather than per drawing.
| Grade | UNS | Typical service |
|---|---|---|
| GH141 | — | Precipitation-hardened; 650–950 °C turbine and engine parts. |
| GH3030 / GH3039 | — | Combustion-chamber sheet and liners below 800 °C. |
| GH3044 | — | Oxidation-resistant sheet for combustors and heat shields below 900 °C. |
| GH3128 | — | Solution-strengthened; flame tubes and afterburner casings. |
| GH4033 | — | Turbine blades and discs, 700–750 °C. |
| GH4037 | — | Turbine working blades to 850 °C with good thermal fatigue resistance. |
| GH4049 | — | Blades for 850–950 °C service; oxidation resistance to 1,000 °C. |
| GH4080A | N07080 | Nimonic 80A-type; exhaust valves and high-temperature bolts. |
| GH4099 / GH99 | — | Combustor and afterburner welded structures to 900–1,000 °C. |
| GH4169-type | N07718 | Turbine discs and high-strength fasteners to about 650 °C. |
| GH4698 | — | Discs and rings for 750–800 °C aero and marine turbines. |
| GH4738 | — | Turbine discs and blades to 815 °C. |
| GH5188 | R30188 | Combustor liners and transition ducts to 1,100 °C. |
| GH605 | R30605 | Cobalt-based; guide vanes and seals to 1,000 °C. |
| GH648 | — | ~32 % Cr for hot-corrosion resistance; combustor hot-section parts. |
| GH2132 | — | A286-type; bolts and discs below 650 °C. |
| GH2696 | — | Turbine and cryogenic components; 700 °C strength with low-temperature stability. |
| GH901 | N09901 | Turbine discs and shafts below 650 °C. |
| GH907 | — | Low-expansion Fe–Ni–Co; compressor cases and seal rings. |
| GH1015 / GH1131 / GH1180 | — | Fe–Ni–Cr solution-strengthened sheet and bar, 700–1,000 °C. |
| GH536 | N06600-type | Combustors, industrial furnace parts, 900 °C. |
| GO50 | — | High thermal conductivity; nozzles, hot valves, turbine blades. |
Quotes within one business day. Send grade, size, pressure class, face type and quantity — a drawing works better than a description.
