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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	719～697	σb/MPa
Yield Strength	484	σ 0.2 ≥/MPa
Elongation	57	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	659～314	-
HRC	30	-

Physical Properties

Thermal expansion	66-44	e-6/K
Thermal conductivity	59-94	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	2971-9818	째C
Density	3424-3067	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