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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	817～331	σb/MPa
Yield Strength	163	σ 0.2 ≥/MPa
Elongation	33	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	670～786	-
HRC	30	-

Physical Properties

Thermal expansion	24-36	e-6/K
Thermal conductivity	59-54	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	9234-2566	째C
Density	8796-4718	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