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SKS31 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SKS31

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JIS SKS31

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This page is mainly introduced the SKS31 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SKS31,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
SKS31

Steel Garde:SKS31
Type:Special Alloy
Country:Japan
Standard:JIS
Application:Cold Work Die Steel

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	321～229	σb/MPa
Yield Strength	307	σ 0.2 ≥/MPa
Elongation	72	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	284～318	-
HRC	30	-

Physical Properties

Thermal expansion	19-98	e-6/K
Thermal conductivity	19-90	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	0820-1204	째C
Density	7153-8819	kg/m³
Resistivity	0.50-0.60	Ohm.mm²/m

Heat Treatment Regime

Annealing	Quenching	Tempering	Normalizing	Q & T
√	√	√	√	√

Size Availability

Steel Grade	Specification	Processing range(mm)
SKS31 Special Alloy	Round Bar and Hollow Bar	Φ1 to Φ2000
	Square and Flat Steel	Φ10 to Φ100
	Plate and Sheet	0.08-800(Thickness)10-1500(Width)Length
	Tube or Pipe	OD:Φ4-410; WT:1-35 mm; Lenght:10-12000
	Coil and Strip Steel	THK:0.1mm Width:1500mm
	Forged	Ring/Cylindrical/Disk