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 639~259 σb/MPa
Yield Strength 474 σ 0.2 ≥/MPa
Elongation 53 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 924~708 -
HRC 30 -

Physical Properties

Thermal expansion 45-13 e-6/K
Thermal conductivity 71-93 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 4234-8976 째C
Density 7958-3871 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

Technical specification/standard for download

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