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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	265～917	σb/MPa
Yield Strength	051	σ 0.2 ≥/MPa
Elongation	84	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	034～538	-
HRC	30	-

Physical Properties

Thermal expansion	29-49	e-6/K
Thermal conductivity	23-94	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	0620-6453	째C
Density	5669-2176	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