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303S31 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 303S31

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303S31

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This page is mainly introduced the 303S31 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 303S31,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
303S31

Steel Garde:303S31
Type:Special Alloy
Country:UK
Application:austenitic special steel

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	695～416	σb/MPa
Yield Strength	437	σ 0.2 ≥/MPa
Elongation	94	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	182～700	-
HRC	30	-

Physical Properties

Thermal expansion	50-96	e-6/K
Thermal conductivity	99-31	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	3798-6089	째C
Density	7129-2628	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)
303S31 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