S7 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of S7

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ASTM S7

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This page is mainly introduced the S7 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of S7,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
S7
  • Steel Garde:S7
  • Type:Special Alloy
  • Country:USA
  • Standard:ASTM
  • Application:Alloy tool steel

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength 680~842 σb/MPa
Yield Strength 845 σ 0.2 ≥/MPa
Elongation 66 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 718~482 -
HRC 30 -

Physical Properties

Thermal expansion 36-15 e-6/K
Thermal conductivity 95-35 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 1034-1542 째C
Density 3500-0736 kg/m3
Resistivity 0.50-0.60 Ohm.mm2/m
     

Heat Treatment Regime

Annealing

Quenching

Tempering

Normalizing

Q & T

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Size Availability

Steel Grade Specification Processing range(mm)
S7 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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