E4 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of E4

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JIS E4

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This page is mainly introduced the E4 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of E4,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
E4
Hardness quartile HRA: 87
Bending strength frequency/MPa: 1667
  • Steel Garde:E4
  • Type:Special Alloy
  • Country:Japan
  • Standard:JIS
  • Application: carbide geological mining tools①

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength 147~969 σb/MPa
Yield Strength 865 σ 0.2 ≥/MPa
Elongation 60 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 954~915 -
HRC 30 -

Physical Properties

Thermal expansion 39-23 e-6/K
Thermal conductivity 54-93 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 6815-5154 째C
Density 3462-6461 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)
E4 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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