Grades | Superalloys | GH4738

GB GH4738

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GH4738 Application:Nickel-base superalloy

Chemical composition(mass fraction)(wt.%) of the GH4738
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

Mechanical properties of grade GH4738

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition HBW
349 (≥) 437 (≥) 44 24 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 141

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
381 (≥) 635 (≥) 21 32 21 Solution and Aging, Annealing, Ausaging, Q+T,etc
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
- - -
229 759 724 - - -

GH4738 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