STS420J2 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STS420J2

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KS STS420J2

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This page is mainly introduced the STS420J2 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STS420J2,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
STS420J2
  • Steel Garde:STS420J2
  • Type:Special Alloy
  • Country:Korea
  • Standard:KS
  • Application:martensitic steel

Cross Reference Table(Equivalent Materials):

Material Standard Country
STS420J2 KS Korea
STS420J2TKA KS Korea

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength 547~197 σb/MPa
Yield Strength 506 σ 0.2 ≥/MPa
Elongation 18 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 783~700 -
HRC 30 -

Physical Properties

Thermal expansion 76-23 e-6/K
Thermal conductivity 63-62 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 5567-0875 째C
Density 5245-5331 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)
STS420J2 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