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SK4 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SK4

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JIS SK4

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This page is mainly introduced the SK4 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SK4,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
SK4

Steel Garde:SK4
Type:Special Alloy
Country:Japan
Standard:JIS
Application:Carbon tool steel

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
SK4M	JIS	Japan

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	469～812	σb/MPa
Yield Strength	904	σ 0.2 ≥/MPa
Elongation	64	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	637～900	-
HRC	30	-

Physical Properties

Thermal expansion	25-91	e-6/K
Thermal conductivity	70-86	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	8130-7323	째C
Density	1149-0204	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)
SK4 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