M3 Class2 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of M3 Class2

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ASTM M3 Class2

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This page is mainly introduced the M3 Class2 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of M3 Class2,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
M3 Class2
  • Steel Garde:M3 Class2
  • Type:Special Alloy
  • Country:USA
  • Standard:ASTM
  • Application:Molybdenum series High-speed tool steel

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength 702~675 σb/MPa
Yield Strength 204 σ 0.2 ≥/MPa
Elongation 60 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 478~750 -
HRC 30 -

Physical Properties

Thermal expansion 84-72 e-6/K
Thermal conductivity 49-21 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 1773-2884 째C
Density 1861-0199 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)
M3 Class2 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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