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SUH309 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SUH309

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CNS SUH309

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This page is mainly introduced the SUH309 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SUH309,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
CNS standard heat resistant steel bar steel grade and chemical composition

Steel Garde:SUH309
Type:Stainless Steels
Country:China
Standard:CNS
Metallographic Structure:Austenite
Application:CNS standard heat resistant steel bar steel grade and chemical composition

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
SUH309	CNS	China

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C		0.20
Si		1.00
Mn		2.00
P		0.040
S		0.030
Cr	22.00	24.00
Ni	12.00	15.00
Mo
N

Mechanical Properties

Tensile strength	320～611	σb/MPa
Yield Strength	311	σ 0.2 ≥/MPa
Elongation	15	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	674～572	-
HRC	30	-

Physical Properties

Thermal expansion	61-49	e-6/K
Thermal conductivity	61-73	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	8991-2571	째C
Density	3274-9131	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)
SUH309 Stainless Steels	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