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ST40E chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of ST40E

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JIS ST40E

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This page is mainly introduced the ST40E chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of ST40E,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
ST40E
Hardness quartile HRA:90
Bending strength frequency/MPa:2000

Steel Garde:ST40E
Type:Special Alloy
Country:Japan
Standard:JIS
Application:Carbide for cutting tools

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
ST40E	JIS	Japan

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	844～419	σb/MPa
Yield Strength	423	σ 0.2 ≥/MPa
Elongation	21	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	741～768	-
HRC	30	-

Physical Properties

Thermal expansion	40-48	e-6/K
Thermal conductivity	78-08	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	4972-9637	째C
Density	6097-2003	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)
ST40E 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