Hastelloy W (UNS N10004)
Hastelloy W alloy (UNS N10004) is a solid-solution-strengthened super alloy that was developed primarily as a filler metal for welding of dissimilar alloys. It displays excellent dissimilar welding characteristics, and is widely used for that purpose in the gas turbine and aerospace industries. The properties of dissimilar weld joints made with alloy W are dependents upon the alloys joined, but are generally acceptable for a wide variety of combinations. Alloy W is also used as a wrought alloy for a limited number of ring-type Applications in older gas turbine engines. Haynes 242 alloy is a more modern alloy, and should be considered as a substitute for alloy W in these ring Applications.
|Hastelloy W||–||–||Hastelloy W||N10004||–||–||–||–||–||–|
Chemical Composition, %
Typical Physical and Mechanical Properties (RT, Annealed)
|Density, g/cm3||Melting Point, ℃||Tensile Strength, MPa||Yield Strength, MPa||ELongation, %||Hardness, HRB|
Available Products and Specifications
|Rod, Bar, Wire and Forgings||AMS 5786, AMS 5755|
|Plate, Sheet and Strip||–|
|Pipe and Tube||–|
|Welding Product||AWS A5.14 ERNiMo-3|
- Excellent dissimilar welding characteristics
- Hastelloy W is oxidation resistant to 760℃
- High temperature and thermal fatigue strength
Hastelloy W is widely used for that purpose in gas turbines, aerospace and chemical process industries.