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

Chemical composition(mass fraction)(wt.%)

Elements Min.(≥) Max.(≤) Similar Remarks
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 512~197 σb/MPa
Yield Strength 308 σ 0.2 ≥/MPa
Elongation 40 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 158~613 -
HRC 30 -

Physical Properties

Thermal expansion 80-90 e-6/K
Thermal conductivity 67-33 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 9455-2900 째C
Density 8711-0378 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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