55Si2Mn chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 55Si2Mn

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GBT 55Si2Mn

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This page is mainly introduced the 55Si2Mn chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 55Si2Mn,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
55Si2Mn
  • Steel Garde:55Si2Mn
  • Type:Special Alloy
  • Country:China
  • Standard:GBT
  • Application:China structural steel and alloy steel

Cross Reference Table(Equivalent Materials):

Material Standard Country
55Si2MnB GBT China

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength 519~056 σb/MPa
Yield Strength 677 σ 0.2 ≥/MPa
Elongation 43 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 588~083 -
HRC 30 -

Physical Properties

Thermal expansion 19-41 e-6/K
Thermal conductivity 13-88 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 3270-7251 째C
Density 0375-8016 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)
55Si2Mn 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