SM55 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SM55

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SM55

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This page is mainly introduced the SM55 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SM55,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
SM55
  • Steel Garde:SM55
  • Type:Special Alloy
  • Country:China
  • Application:Plastic mould with flat steel

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength 144~634 σb/MPa
Yield Strength 991 σ 0.2 ≥/MPa
Elongation 56 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 720~379 -
HRC 30 -

Physical Properties

Thermal expansion 65-19 e-6/K
Thermal conductivity 15-14 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 4330-3781 째C
Density 6350-8669 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)
SM55 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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