8MnSi chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 8MnSi

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GB 8MnSi

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This page is mainly introduced the 8MnSi chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 8MnSi,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Alloy tool steels of 8MnSi
  • Steel Garde:8MnSi
  • Type:Tool Steels & Die Steels
  • Country:China
  • Standard:GB
  • Standard Number:
    ITEM Standard Number Descriptions
    1 GB/T 1299 (2000) Alloy tool steels
  • Application:Alloy tool steels

Chemical composition(mass fraction)(wt.%)

Elements Min.(≥) Max.(≤)
C 0.75  0.85
Si 0.30  0.60
Mn 0.80  1.10
P   0.030
S   0.030
Cr   0.025
Ni   0.020
Cu   0.30

Mechanical Properties

Tensile strength 054~433 σb/MPa
Yield Strength 753 σ 0.2 ≥/MPa
Elongation 82 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 016~917 -
HRC 30 -

Physical Properties

Thermal expansion 40-29 e-6/K
Thermal conductivity 39-29 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 6008-0791 째C
Density 9809-1072 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)
8MnSi Tool Steels & Die Steels 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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