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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	553～131	σb/MPa
Yield Strength	236	σ 0.2 ≥/MPa
Elongation	05	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	791～933	-
HRC	30	-

Physical Properties

Thermal expansion	71-71	e-6/K
Thermal conductivity	14-73	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	7442-6018	째C
Density	4978-1241	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