NickelAlloy HX


NickelAlloy HX
NickelAlloy HX is a nickel-chromium-iron-molybdenum alloy that possesses an exceptional combination of oxidation resistance, fabricability and high-temperature strength. It has also been found to be exceptionally resistant to stress corrosion cracking in petrochemical applications. It exhibits good ductility after prolonged exposure at temperatures of 1200, 1400, 1600°F (650, 760 and 870°C).

NickelAlloy HX has wide use in gas turbine engines for combustion zone components such as transition ducts, combustor cans, spray bars and flame holders as well as in afterburners, tailpipes and cabin heaters. It is recommended for use in industrial furnace applications because it has unusual resistance to oxidizing, reducing and neutral atmospheres.

Mechanical Properties Test Method As Built Heat Treated
Tensile strength ISO 6892-1:2009(B) Annex D 820 ± 50 MPa 618 ± 32 MPa
Yield Strength (Rp 0.2%) ISO 6892-1:2009(B) Annex D 630 ± 50 MPa 388 ± 50 MPa
Young’s modulus ISO 6892-1:2009(B) Annex D 195 ± 20 GPa 211 ± 1 GPa
Elongation at Break ISO 6892-1:2009(B) Annex D 27 ± 8% 56 ± 14%
Thermal Properties Test Method As Built Heat Treated
Thermal conductivity ASTM E1461-13 9,7 W/m°C 170 ± 5 W/m°C
Specific heat capacity ASTM E1461-13 910 ± 50 J/Kg°C 890 ± 50 J/Kg°C
Chemical Composition and Physical Properties    
Chemical composition Ni
Cr
Fe
Mo
Co
W
C
Mn
Si
Bi
Nb
Al
Ti
47%
22%
18%
9%
1,5%
0,6%
0,1%
1%
1%
0,008%
0,5%
0,5%
0,15%
Physical Properties Relative density 100 %
  Density 8,2 g/cm3
Heat Treatment Temperature Time (h) Atmosphere
Stress Relief RT - 1180°C 1 Inert
  1180°C 6 Inert
  1180°C - RT - Inert