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STD12 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STD12

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KS STD12

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This page is mainly introduced the STD12 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STD12,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.

Steel Garde:STD12
Type:Special Alloy
Country:Korea
Standard:KS
Application:Carbide for cutting tools

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
STD12	KS	Korea

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	530～715	σb/MPa
Yield Strength	877	σ 0.2 ≥/MPa
Elongation	68	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	513～780	-
HRC	30	-

Physical Properties

Thermal expansion	71-48	e-6/K
Thermal conductivity	70-13	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	1202-9288	째C
Density	3773-5900	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)
STD12 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