1.6740 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 1.6740

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DIN 1.6740

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This page is mainly introduced the 1.6740 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 1.6740,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
1.6740
  • Steel Garde:1.6740
  • Type:Special Alloy
  • Country:Germany
  • Standard:DIN
  • Application:

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength 204~053 σb/MPa
Yield Strength 638 σ 0.2 ≥/MPa
Elongation 37 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 404~512 -
HRC 30 -

Physical Properties

Thermal expansion 85-52 e-6/K
Thermal conductivity 55-08 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 0833-3117 째C
Density 5187-2534 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)
1.6740 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