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GH4220 Application:Nickel base superalloy
Category Type Steel grade Standard Country
Grades Special Alloy GH4220 GBT China

Chemical composition % of the ladle analysis of grade GH4220

C(％) Cr(％) Ni(％) Mo(％) W(%) Co(%) B(%) Al(%) Ti(%) Other(%)
Max 0.08 9.0-12.0 Balance 5.0-7.0 5.0-6.5 14.0-15.0 Max 0.02 3.9-4.8 2.2-2.9 V:0.2-0.8,Mg::Traces
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)
585 (≥) 649 (≥) 32 12 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 311
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
597 (≥) 873 (≥) 32 42 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 132
Temp.
°C/°F		 Creep strain limit
(10000h)
(Rp1,0) N/mm2		 Creep rupture strength
(10000h)
(Rp1,0) N/mm2
585 552 938
GH4220 Range of products
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 GBT China
Nickel-base superalloy

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