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

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CNS Austenitic 309

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This page is mainly introduced the Austenitic 309 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of Austenitic 309,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
CNS standard heat resistant steel bars(CNS 9608-1998)

Steel Garde:Austenitic 309
Type:Special Alloy
Country:China
Standard:CNS
Application:CNS standard heat resistant steel bars(CNS 9608-1998)

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
Austenitic 309	CNS	China

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	123～827	σb/MPa
Yield Strength	811	σ 0.2 ≥/MPa
Elongation	31	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	802～605	-
HRC	30	-

Physical Properties

Thermal expansion	88-38	e-6/K
Thermal conductivity	15-13	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	4823-6684	째C
Density	4941-9463	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)
Austenitic 309 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