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GH1138Application:High temperature iron base alloy
CategoryTypeSteel gradeStandardCountry
Grades Special Alloy GH1138GBTChina

Chemical composition%of the ladle analysis of gradeGH1138

C(%)Mn(%)Cr(%)Ni(%)Mo(%)W(%)B(%)Nb(%)Al(%)Other(%)
Max 0.101.0-2.018.0-22.035.0-40.02.0-2.64.5-5.2Max 0.0081.0-1.7Max 0.5Si:Max 0.8,Ce:Max 0.05,N :0.10-0.25,Zr:Max 0.05
GH1138
Mechanical properties of gradeGH1138
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)
936(≥)126(≥)111312Solution and Aging,Annealing,Ausaging,Q+T,etc233
Physical properties of gradeGH1138
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
284(≥)455(≥)122111Solution and Aging,Annealing,Ausaging,Q+T,etc432
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0)N/mm2
Creep rupture strength
(10000h)
(Rp1,0)N/mm2
153756226
GH1138Range 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
GH1138GBTChina
Iron-based superalloy

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