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STS403 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STS403

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KS STS403

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This page is mainly introduced the STS403 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STS403,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
STS403

Steel Garde:STS403
Type:Special Alloy
Country:Korea
Standard:KS
Application:martensitic steel

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
STS403	KS	Korea

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	225～099	σb/MPa
Yield Strength	799	σ 0.2 ≥/MPa
Elongation	12	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	155～677	-
HRC	30	-

Physical Properties

Thermal expansion	06-53	e-6/K
Thermal conductivity	87-88	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	7975-7176	째C
Density	0828-5138	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)
STS403 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