27SiMn chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 27SiMn

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GB 27SiMn

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This page is mainly introduced the 27SiMn chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 27SiMn,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
27SiMn
  • Steel Garde:27SiMn
  • Type:Structural Steel
  • Country:China
  • Standard:GB
  • Standard Number:
    ITEM Standard Number Descriptions
    1 GB/T 11251 (2009) Hot-rolled alloy structural steel plates
    2 GB/T 17396 (2009) Hot-rolled seamless steel tubes for hydraulic pillar service
    3 GB/T 3077 (1999) Alloy structure steels
    4 GB/T 3078 (2008) Quality structural steel cold drawn bars
    5 GB/T 8162 (2008) Seamless steel tubes for structural purposes
  • Application:Structural and constructional steels

Chemical composition(mass fraction)(wt.%)

Elements Min.(≥) Max.(≤)
C 0.24  0.32
Si 1.10  1.40
Mn 1.10  1.40
P   0.035
S   0.035
Cu   0.30
Cr   0.30
Ni   0.30
Mo   0.15

Mechanical Properties

Tensile strength 930~867 σb/MPa
Yield Strength 913 σ 0.2 ≥/MPa
Elongation 31 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 277~908 -
HRC 30 -

Physical Properties

Thermal expansion 26-17 e-6/K
Thermal conductivity 78-62 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 8483-0654 째C
Density 3055-2696 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)
27SiMn Structural Steel 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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