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G40Application:Carbide for cutting tools
CategoryTypeSteel gradeStandardCountry
Grades Special Alloy G40AFNORFrance

Chemical composition%of the ladle analysis of gradeG40

Mechanical properties of gradeG40
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)
741(≥)265(≥)343131Solution and Aging,Annealing,Ausaging,Q+T,etc414
Physical properties of gradeG40
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
666(≥)323(≥)411211Solution and Aging,Annealing,Ausaging,Q+T,etc413
Temp.
°C/°F		Creep strain limit
(10000h)
(Rp1,0)N/mm2		Creep rupture strength
(10000h)
(Rp1,0)N/mm2
811195117
G40Range 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
G4000AFNORFrance
Used in the products of the automobile, truck, tractor, and allied industries. Diesel engine castings, liners, cylinders, and pistons.
G4000aAFNORFrance
Used in the products of the automobile, truck, tractor, and allied industries. Diesel engine castings, liners, cylinders, and pistons.

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