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309S20 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 309S20

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309S20

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This page is mainly introduced the 309S20 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 309S20,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
309S20

Steel Garde:309S20
Type:Special Alloy
Country:UK
Application:austenitic special steel

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	283～488	σb/MPa
Yield Strength	827	σ 0.2 ≥/MPa
Elongation	41	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	627～807	-
HRC	30	-

Physical Properties

Thermal expansion	17-28	e-6/K
Thermal conductivity	17-34	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	9683-4689	째C
Density	2305-6879	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)
309S20 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