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STS431 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STS431

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KS STS431

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This page is mainly introduced the STS431 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STS431,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
STS431

Steel Garde:STS431
Type:Special Alloy
Country:Korea
Standard:KS
Application:martensitic steel

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
STS431	KS	Korea

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	260～868	σb/MPa
Yield Strength	294	σ 0.2 ≥/MPa
Elongation	52	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	654～815	-
HRC	30	-

Physical Properties

Thermal expansion	58-95	e-6/K
Thermal conductivity	50-73	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	9971-8961	째C
Density	1977-2931	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)
STS431 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