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STS51 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STS51

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KS STS51

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This page is mainly introduced the STS51 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STS51,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.

Steel Garde:STS51
Type:Special Alloy
Country:Sweden
Standard:KS
Application:Carbide for cutting tools

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
STS51	KS	Sweden
STS8	KS	Korea
STS8	KS	Korea

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	784～234	σb/MPa
Yield Strength	845	σ 0.2 ≥/MPa
Elongation	17	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	143～379	-
HRC	30	-

Physical Properties

Thermal expansion	28-15	e-6/K
Thermal conductivity	78-42	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	3715-0601	째C
Density	1389-2277	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)
STS51 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