UNS R30188 — The cobalt-base combustion alloy — strength and sulfidation resistance where nickel alloys soften.
Nominal published values for the annealed condition. Certified heat lots ship with actual MTC values.
| Property | Value |
|---|---|
| Density | 9.13 g/cm³ |
| Min. yield strength (annealed) | 445 MPa |
| Min. tensile strength (annealed) | 960 MPa |
| Max service temperature | 1095 °C |
| Nominal chemistry | Co bal. · Ni ~22% · Cr ~22% · W ~14% |
Ø 3 – 500 mm · hot-rolled · forged · cold-finished · h9 / h10 / h11 · ground · 100% PMI · UT on forgings
Full bars & rods page →ASTM B446 · ASTM B164 · ASTM B166 · ASTM B408 · ASTM B425 · ASTM B574 · ASTM B637
Confirm your standard →Pipe, fittings, bar, sheet, wire and forgings — consolidated into one PO with matching heats.
Haynes 188 grade hub →Standard sizes per the bars & rods range (see supply range above) are stocked or on a frequent smelting schedule for Haynes 188. Non-standard dimensions are made to order — confirm with your inquiry.
Every heat ships with EN 10204 3.1 MTC: ladle + product chemistry, mechanical results, dimensional data and heat number. Third-party witnessed 3.2 available on request.
Typical uses: Gas turbine transition ducts; Combustion liners. If your medium, temperature or pressure differs, our metallurgists verify grade selection free of charge before quoting.
Dimensions, quantity, standard — that is all we need. A named metallurgist replies with pricing, lead time and MTC sample.