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GB GH4738 Details

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GH4738 Application:Nickel-base superalloy

Category Type Grade Designations
Grades Superalloys GH4738 China - GB ,

Chemical composition(wt.%) of GH4738 grade:

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.03 0.10
Cr 18.0 21.0
Mo 3.5 5.0
Ni - Remainder
Co 12.0 15.0
Al 1.2 1.6
Ti 2.75 3.25
B 0.003 0.01
Fe - 2.0
Zr 0.02 0.08
GH4738

Mechanical properties of grade GH4738

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)
449 (≥) 398 (≥) 11 14 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 331

Physical properties of grade GH4738

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
328 (≥) 734 (≥) 42 43 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 331
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
565 248 249

GH4738 - 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
GH4738 GB China
Nickel-base superalloy

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