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STS420F chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STS420F

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KS STS420F

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This page is mainly introduced the STS420F chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STS420F,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
STS420F

Steel Garde:STS420F
Type:Special Alloy
Country:Korea
Standard:KS
Application:martensitic steel

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
STS420F	KS	Korea
STS420F2	KS	Korea
STS420F2	KS	Korea

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	715～283	σb/MPa
Yield Strength	621	σ 0.2 ≥/MPa
Elongation	78	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	315～107	-
HRC	30	-

Physical Properties

Thermal expansion	33-53	e-6/K
Thermal conductivity	50-22	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	1939-6151	째C
Density	5887-3682	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)
STS420F 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