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GH4738Application:Nickel base superalloy
CategoryTypeSteel gradeStandardCountry
Grades Special Alloy GH4738GBTChina

Chemical composition%of the ladle analysis of gradeGH4738

C(%)Cr(%)Ni(%)Mo(%)Co(%)B(%)Al(%)Ti(%)Other(%)
0.03-0.1018.0-21.0Balance3.5-5.012.0-15.00.003-0.01.2-1.62.75-3.25Zr :0.02-0.08
GH4738
Mechanical properties of gradeGH4738
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 ConditionBrinell hardness(HBW)
331(≥)689(≥)341133Solution and Aging,Annealing,Ausaging,Q+T,etc311
Physical properties of gradeGH4738
PropertyDensity
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
267(≥)358(≥)224344Solution and Aging,Annealing,Ausaging,Q+T,etc331
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0)N/mm2
Creep rupture strength
(10000h)
(Rp1,0)N/mm2
257644754
GH4738Range of products
Product typeProductsDimensionProcessesDeliver Status
Plates/SheetsPlates/Sheets0.08-200mm(T)*W*LForging,hot rolling and cold rollingAnnealed,Solution and Aging,Q+T,ACID-WASHED,Shot Blasting
Steel BarRound Bar,Flat Bar,Square BarΦ8-1200mm*LForging,hot rolling and cold rolling,CastBlack,Rough Turning,Shot Blasting,
Coil/StripSteel Coil/Steel Strip0.03-16.0x1200mmCold-Rolled&Hot-RolledAnnealed,Solution and Aging,Q+T,ACID-WASHED,Shot Blasting
Pipes/TubesSeamless Pipes/Tubes,Welded Pipes/TubesOD:6-219mm x WT:0.5-20.0mmHot extrusion,Cold Drawn,WeldedAnnealed,Solution and Aging,Q+T,ACID-WASHED
Cross Reference Table(Equivalent Grade)
GradeStandardCountryApplication
GH4738GBTChina
Nickel-base superalloy

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