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SK85 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SK85

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JIS SK85

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This page is mainly introduced the SK85 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SK85,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
SK85

Steel Garde:SK85
Type:Special Alloy
Country:Japan
Standard:JIS
Application:Carbon tool steel

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	922～607	σb/MPa
Yield Strength	140	σ 0.2 ≥/MPa
Elongation	19	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	593～304	-
HRC	30	-

Physical Properties

Thermal expansion	74-00	e-6/K
Thermal conductivity	53-67	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	0394-6042	째C
Density	4244-0082	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)
SK85 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