Haynes 230, Alloy 230
Haynes 230 UNS N06230, Best balance of strength, thermal stability, oxidation resistance, thermal cycling resistance and fabricability of any major high-temperature alloy. Used in gas turbine combustors and other key stationary components. Also used for heat treating and industrial heating applications, and in the chemical/petrochemical process industry and in fossil energy plants.
Haynes 230 alloy is a nickelchromium-tungsten-molybdenum alloy that combines excellent high-temperature strength, outstanding resistance to oxidizing environments up to 2100°F (1149°C) for prolonged exposures, premier resistance to nitriding environments, and excellent long-term thermal stability. It is readily fabricated and formed, and is castable. Other attractive features include lower thermal expansion characteristics than most high-temperature alloys, and a pronounced resistance to grain coarsening with prolonged exposure to high temperatures.
Available Product Forms:
Material is produced in the form of plate, sheet, strip, billet, bar, wire.
Specifications
The UNS number for the alloy is N06230
Rod, Bar, Wire and Forging Stock: bar and forging are covered by AMS 5891.
Plate, Sheet and Strip: Sheet, strip and plate are also covered by AMS 5878.
Chemical Composition
Nickel……………………………………….Balance*
Chromium…………………………………20.0-22.5
Molybdenum ……………………………..12.5-14.5
Iron …………………………………………..2.0-6.0
Tungsten ……………………………………2.5-3.5
Cobalt ………………………………………..2.5 max.
Vanadium……………………………………0.35 max.
Carbon………………………………………..0.015 max.
Manganese …………………………………0.50 max.
Sulfur …………………………………………0.02 max.
Silicon ………………………………………..0.08 max.
Phosphorus ………………………………..0.02 max.
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