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SKH40 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SKH40

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JIS SKH40

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This page is mainly introduced the SKH40 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SKH40,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
SKH40

Steel Garde:SKH40
Type:Special Alloy
Country:Japan
Standard:JIS
Application:Powder metallurgy high-speed tool steel

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	902～951	σb/MPa
Yield Strength	143	σ 0.2 ≥/MPa
Elongation	84	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	618～710	-
HRC	30	-

Physical Properties

Thermal expansion	84-26	e-6/K
Thermal conductivity	36-38	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	0178-2548	째C
Density	7314-3686	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)
SKH40 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