SS440 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SS440

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JIS SS440

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This page is mainly introduced the SS440 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SS440,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
SS440
  • Steel Garde:SS440
  • Type:Special Alloy
  • Country:Japan
  • Standard:JIS
  • Application:SS440

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength 602~201 σb/MPa
Yield Strength 148 σ 0.2 ≥/MPa
Elongation 86 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 234~782 -
HRC 30 -

Physical Properties

Thermal expansion 60-55 e-6/K
Thermal conductivity 49-29 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 7878-1895 째C
Density 6064-8063 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)
SS440 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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