75 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 75

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GOST 75

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This page is mainly introduced the 75 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 75,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Spring carbon and alloy steel bars. Specifications
  • Steel Garde:75
  • Type:Structural Steel
  • Country:Russia
  • Standard:GOST
  • Standard Number:
    ITEM Standard Number Descriptions
    1 GOST 14959 Spring carbon and alloy steel bars. Specifications
  • Application:Spring carbon and alloy steel bars. Specifications

Chemical composition(mass fraction)(wt.%)

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.72  0.80
Si 0.17  0.37
Mn 0.50  0.80
P   0.035
S   0.035
Cr   0.25
Ni   0.25
Cu   0.20

Mechanical Properties

Tensile strength 385~127 σb/MPa
Yield Strength 017 σ 0.2 ≥/MPa
Elongation 86 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 868~779 -
HRC 30 -

Physical Properties

Thermal expansion 41-40 e-6/K
Thermal conductivity 10-35 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 5526-6867 째C
Density 4154-3552 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)
75 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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