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SKT4Application:Hot-work die steel
CategoryTypeSteel gradeStandardCountry
Grades Special Alloy SKT4JISJapan

Chemical composition%of the ladle analysis of gradeSKT4

C(%)Si(%)Mn(%)P(%)S(%)Cr(%)Mo(%)V(%)
0.50-0.600.10-0.400.60-0.90Max 0.030Max 0.0200.80-1.200.35-0.550.05-0.15
SKT4
Mechanical properties of gradeSKT4
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)
633(≥)684(≥)213211Solution and Aging,Annealing,Ausaging,Q+T,etc441
Physical properties of gradeSKT4
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
299(≥)184(≥)343421Solution and Aging,Annealing,Ausaging,Q+T,etc314
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0)N/mm2
Creep rupture strength
(10000h)
(Rp1,0)N/mm2
588381764
SKT4Range 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

Relevant products

SKT4 Steel Stock

Steel gradeDimensionShapeUnitQuantityDelivery stateQuery
1.2714 Hot-Work Mould Steel Flat Bar Stock(2019-09-03)Select0SelectEnquiry
1.2714 Stock list 2020-06-15Select0SelectEnquiry
1.2714 QT Bar Stock List 2020-06-15Select0SelectEnquiry

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