GH4220 Superalloys

GH4220 - Specification & Application

Nickel-base superalloy

Chemical composition(wt.%) of GH4220 grade:

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.08
Cr 9.0 12.0
Mo 5.0 7.0
Ni - Remainder
Co 14.0 15.0
W 5.0 6.5
Al 3.9 4.8
Ti 2.2 2.9
B - 0.02
Fe - 3.0
V 0.2 0.8
Mg - trace

GH4220 - Detail

GH4220

Mechanical properties of grade GH4220

Proof strength
Rp0.2 (MPa)
Tensile strength
Rm (MPa)
Impact energy
KV (J)
Elongation at fracture
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
952 (≥) 736 (≥) 14 23 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 322

Physical properties of grade GH4220

Property Density
kg/dm3
Temperature T
°C/F
Specific heat
J / kgK
Thermal conductivity
W/mK
Electric resistance
µΩ·cm
Modulus of elasticity
kN/mm2
Expansion rate
495 (≥) 387 (≥) 11 32 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 322
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
299 562 359

Equivalent Grade

Equivalent Products

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