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ST20E chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of ST20E

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JIS ST20E

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This page is mainly introduced the ST20E chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of ST20E,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
ST20E
Hardness quartile HRA:91.5
Bending strength frequency/MPa:1600

Steel Garde:ST20E
Type:Special Alloy
Country:Japan
Standard:JIS
Application:Carbide for cutting tools

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	426～645	σb/MPa
Yield Strength	399	σ 0.2 ≥/MPa
Elongation	77	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	531～284	-
HRC	30	-

Physical Properties

Thermal expansion	84-74	e-6/K
Thermal conductivity	65-08	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	2047-0081	째C
Density	8038-1755	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)
ST20E 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