7Χ3 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 7Χ3

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EN 7Χ3

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This page is mainly introduced the 7Χ3 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 7Χ3,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
  • Steel Garde:7Χ3
  • Type:Special Alloy
  • Country:Russia
  • Standard:EN
  • Application:Carbide for cutting tools

Cross Reference Table(Equivalent Materials):

Material Standard Country
7Χ3 EN Russia

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength 033~806 σb/MPa
Yield Strength 105 σ 0.2 ≥/MPa
Elongation 04 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 207~174 -
HRC 30 -

Physical Properties

Thermal expansion 75-84 e-6/K
Thermal conductivity 82-62 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 8350-0491 째C
Density 2150-8048 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)
7Χ3 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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