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A 554 MT 309S -Cb chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of A 554 MT 309S -Cb

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This page is mainly introduced the A 554 MT 309S -Cb chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of A 554 MT 309S -Cb,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Intended for use in ornamental, structural, exhaust, and other applications where appearance, mechanical properties, or corrosion resistance is needed.

Austenitic steel; As-welded or cold-reduced mechanical tubing in sizes to 406.4 mm outside dimension, and in wall thicknesses 0.51 mm and over.

Steel Garde:A 554 MT 309S -Cb
Type:Stainless Steels
Country:USA
Standard:SAE
Standard Number:

ITEM Standard Number Descriptions

1 A 554 (2011) Welded Stainless Steel Mechanical Tubing
Metallographic Structure:Austenite
Application:Intended for use in ornamental, structural, exhaust, and other applications where appearance, mechanical properties, or corrosion resistance is needed

ITEM	Standard Number	Descriptions
1	A 554 (2011)	Welded Stainless Steel Mechanical Tubing

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
A 240 S30940	SAE	USA
A 249 S30940	SAE	USA
A 276 S30940	SAE	USA
A 314 S30940	SAE	USA
A 358 S30940	SAE	USA
A 409 S30940	SAE	USA
A 478 S30940	SAE	USA
A 580 S30940	SAE	USA
A 813 S30940	SAE	USA
A 814 S30940	SAE	USA
S30940	AISI	USA
SA 249 S30940	AMS	USA
SA-240 S30940	AMS	USA
SA-813 S30940	AMS	USA
SA-814 S30940	AMS	USA
309HCb	UNS	USA
A 240 S30940	SAE	USA
A 249 S30940	SAE	USA
A 276 S30940	SAE	USA
A 314 S30940	SAE	USA
A 358 S30940	SAE	USA
A 409 S30940	SAE	USA
A 478 S30940	SAE	USA
A 580 S30940	SAE	USA
A 813 S30940	SAE	USA
A 814 S30940	SAE	USA
S30940	AISI	USA
SA 249 S30940	AMS	USA
SA-240 S30940	AMS	USA
SA-813 S30940	AMS	USA
SA-814 S30940	AMS	USA

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C		0.08
Si		1.00
Mn		2.00
P		0.04
S		0.03
Cr	22.0	24.0
Ni	12.0	16.0
Nb+Ta		1.0000

Mechanical Properties

Tensile strength	943～991	σb/MPa
Yield Strength	591	σ 0.2 ≥/MPa
Elongation	64	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	866～312	-
HRC	30	-

Physical Properties

Thermal expansion	94-70	e-6/K
Thermal conductivity	58-27	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	7697-9504	째C
Density	2500-4429	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)
A 554 MT 309S -Cb 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