STS420J1 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STS420J1

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KS STS420J1

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This page is mainly introduced the STS420J1 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STS420J1,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
STS420J1
  • Steel Garde:STS420J1
  • Type:Special Alloy
  • Country:Korea
  • Standard:KS
  • Application:martensitic steel

Cross Reference Table(Equivalent Materials):

Material Standard Country
STS420J1 KS Korea
STS420J1TKA KS Korea

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength 687~276 σb/MPa
Yield Strength 769 σ 0.2 ≥/MPa
Elongation 99 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 517~118 -
HRC 30 -

Physical Properties

Thermal expansion 56-09 e-6/K
Thermal conductivity 68-65 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 2584-9426 째C
Density 8134-6389 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)
STS420J1 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