STKM18C chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STKM18C

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CNS STKM18C

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This page is mainly introduced the STKM18C chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STKM18C,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
STKM18C
  • Steel Garde:STKM18C
  • Type:Special Alloy
  • Country:China
  • Standard:CNS
  • Application:China Taiwan Structural steel

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength 850~345 σb/MPa
Yield Strength 590 σ 0.2 ≥/MPa
Elongation 01 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 586~088 -
HRC 30 -

Physical Properties

Thermal expansion 98-16 e-6/K
Thermal conductivity 37-56 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 6877-0179 째C
Density 9601-8149 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)
STKM18C 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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