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SKH4 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SKH4

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JIS SKH4

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This page is mainly introduced the SKH4 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SKH4,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
SKH4

Steel Garde:SKH4
Type:Special Alloy
Country:Japan
Standard:JIS
Application:Tungsten series high speed tool steel

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
SKH40	JIS	Japan

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	299～487	σb/MPa
Yield Strength	833	σ 0.2 ≥/MPa
Elongation	22	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	375～730	-
HRC	30	-

Physical Properties

Thermal expansion	66-65	e-6/K
Thermal conductivity	55-62	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	0746-7176	째C
Density	2869-8276	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)
SKH4 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