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 919~028 σb/MPa
Yield Strength 674 σ 0.2 ≥/MPa
Elongation 48 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 470~007 -
HRC 30 -

Physical Properties

Thermal expansion 67-46 e-6/K
Thermal conductivity 46-65 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 3850-3142 째C
Density 8590-3132 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)
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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