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SK7 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SK7

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JIS SK7

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SK7 Profile
SK7 Chemical composition
SK7 Mechanical Properties
SK7 Physical Properties
SK7 Heat treatment
SK7 Size Availability
SK7 Relevant products

Profile

This page is mainly introduced the SK7 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SK7,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
SK7

Steel Garde:SK7
Type:Special Alloy
Country:Japan
Standard:JIS
Application:Carbon tool steel

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
SK75	JIS	Japan
SK70	JIS	Japan
SK7M	JIS	Japan

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	060～206	σb/MPa
Yield Strength	622	σ 0.2 ≥/MPa
Elongation	44	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	485～756	-
HRC	30	-

Physical Properties

Thermal expansion	79-54	e-6/K
Thermal conductivity	84-71	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	4339-8825	째C
Density	6291-9027	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)
SK7 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