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GB GH4220 Details

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GH4220 Application:Nickel-base superalloy

Category Type Grade Designations
Grades Superalloys GH4220 China - GB ,

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

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)
878 (≥) 228 (≥) 33 41 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 424

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
711 (≥) 729 (≥) 22 12 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 211
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
763 472 192

GH4220 - Form of Supply

Product type Products Dimension Processes Deliver Status
Plates / Sheets Plates / Sheets 0.08-200mm(T)*W*L Forging, hot rolling and cold rolling Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel Bar Round Bar, Flat Bar, Square Bar Φ8-1200mm*L Forging, hot rolling and cold rolling, Cast Black, Rough Turning, Shot Blasting,
Coil / Strip Steel Coil /Steel Strip 0.03-16.0x1200mm Cold-Rolled & Hot-Rolled Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes / Tubes Seamless Pipes/Tubes, Welded Pipes/Tubes OD:6-219mm x WT:0.5-20.0mm Hot extrusion, Cold Drawn, Welded Annealed, Solution and Aging, Q+T, ACID-WASHED

Cross Reference Table(Equivalent Grade)

Grade Standard Country Application
GH4220 GB China
Nickel-base superalloy

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