Haynes 230 Alloy Introduction to Characteristics and Execution Standards

Haynes 230 Alloy Introduction to Characteristics and Execution Standards

Common Trade Names:  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 nickel-chromium-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.

Haynes 230 Alloy Chemical Composition

Limiting Chemical Composition, % 

Nickel ………………………………………………………………..Balance;

Iron..............................................................................3.0 max. 

Chromium ..................................................................20.0-24.0; 

Cobalt .........................................................................5.0 max. 

Molybdenum..................................................................1.0-3.0 ;

Tungsten ....................................................................13.0-15.0 ;

Carbon.......................................................................0.05-0.15 ;

Silicon ........................................................................0.25-0.75; 

Manganese ................................................................0.30-1.00 ;

Phosphorus.............................................................0.030 max. 

Sulfur.......................................................................0.015 max. 

Aluminum...................................................................0.20-0.50 ;

Lanthanum ............................................................0.005-0.050 ;

Boron ......................................................................0.015 max.