Power Generation
RAS Alloy supplies high-temperature nickel alloys for gas turbine hot-section components, ultra-supercritical boiler tubing and industrial power plant hardware.
Typical Alloy Grades
617 / 625 / 718 / X-750 / Nimonic 80A
Ultra-supercritical boiler tubes and headers , Inconel 617
Gas turbine transition ducts and liners , Hastelloy X, Nimonic 75
Steam turbine fasteners and bolting , Inconel X-750, Nimonic 80A
Waste-to-energy incinerator components , Inconel 625, Inconel 601
Heat recovery steam generator tubing , Incoloy 800H, Inconel 625
Applicable Standards
Frequently Asked Questions
Power Generation Alloy FAQWhich alloy for ultra-supercritical boiler tubes and headers?
Inconel 617 (UNS N06617) to ASTM B168 / ASME SB-168 and AMS 5887 — 20–24% Cr with 8–10% Mo and 10–15% Co gives the creep strength USC steam conditions demand. Incoloy 800H covers lower-temperature HRSG tubing.
What do you supply for gas turbine transition ducts and liners?
Hastelloy X and Nimonic 75 sheet to ASME SA-240 — oxidation-resistant in combustion atmospheres where ducts and liners see the hottest gas-path temperatures.
Which bolting grades for steam turbine fasteners?
Inconel X-750 (AMS 5667 / 5698) and Nimonic 80A (AMS 5825) to ASTM B637 / ASME SB-637, supplied age-hardened for high-temperature bolting with sustained relaxation resistance.