ML18 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of ML18

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GBT ML18

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This page is mainly introduced the ML18 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of ML18,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
ML18
  • Steel Garde:ML18
  • Type:Special Alloy
  • Country:China
  • Standard:GBT
  • Application:China structural steel and alloy steel

Cross Reference Table(Equivalent Materials):

Material Standard Country
ML18Mn GBT China

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength 380~388 σb/MPa
Yield Strength 969 σ 0.2 ≥/MPa
Elongation 96 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 898~032 -
HRC 30 -

Physical Properties

Thermal expansion 39-12 e-6/K
Thermal conductivity 30-15 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 7811-0153 째C
Density 3153-4219 kg/m3
Resistivity 0.50-0.60 Ohm.mm2/m
     

Heat Treatment Regime

Annealing

Quenching

Tempering

Normalizing

Q & T

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Size Availability

Steel Grade Specification Processing range(mm)
ML18 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

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