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STD4 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STD4

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KS STD4

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This page is mainly introduced the STD4 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STD4,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.

Steel Garde:STD4
Type:Special Alloy
Country:Korea
Standard:KS
Application:Carbide for cutting tools

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
STD4	KS	Korea

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	247～058	σb/MPa
Yield Strength	984	σ 0.2 ≥/MPa
Elongation	88	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	321～482	-
HRC	30	-

Physical Properties

Thermal expansion	65-91	e-6/K
Thermal conductivity	84-92	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	1903-0601	째C
Density	7847-0191	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)
STD4 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