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40CrNi12SApplication:Alloy structural steel
CategoryTypeSteel gradeStandardCountry
Grades Special Alloy 40CrNi12SSTAS/SRRomania

Chemical composition%of the ladle analysis of grade40CrNi12S

C(%)Si(%)Mn(%)P(%)S(%)Cr(%)Ni(%)Mo(%)Cu(%)Ti(%)
0.36-0.440.17-0.370.50- 0.800.0350.020-0.0400.45-0.751.00- 1.400.150.30.02
40CrNi12S
Mechanical properties of grade40CrNi12S
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)
462(≥)692(≥)243214Solution and Aging,Annealing,Ausaging,Q+T,etc434
Physical properties of grade40CrNi12S
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
848(≥)283(≥)434111Solution and Aging,Annealing,Ausaging,Q+T,etc222
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0)N/mm2
Creep rupture strength
(10000h)
(Rp1,0)N/mm2
612257938
40CrNi12SRange 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

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