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SKS81 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SKS81

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JIS SKS81

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This page is mainly introduced the SKS81 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SKS81,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
SKS81

Steel Garde:SKS81
Type:Special Alloy
Country:Japan
Standard:JIS
Application:Alloy tool steel - Tool steel

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
SKS81M	JIS	Japan

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	858～522	σb/MPa
Yield Strength	652	σ 0.2 ≥/MPa
Elongation	31	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	755～272	-
HRC	30	-

Physical Properties

Thermal expansion	89-64	e-6/K
Thermal conductivity	89-08	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	7553-0203	째C
Density	3701-4985	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)
SKS81 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