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SA-268 S40800 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SA-268 S40800

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AMS SA-268 S40800

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This page is mainly introduced the SA-268 S40800 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SA-268 S40800,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service

Steel Garde:SA-268 S40800
Type:Stainless Steels
Country:USA
Standard:AMS

Standard Number:

ITEM	Standard Number	Descriptions
1	SA-268/SA-268M	Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service

Metallographic Structure:Ferrite
Application:Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
A 268 S40800	SAE	USA
A 959 S40800	SAE	USA
S40800	AISI	USA

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C		0.08
Mn		1.00
Si		1.00
P		0.045
S		0.045
Cr	11.50	13.00
Ni		0.08
Mo

Mechanical Properties

Tensile strength	293～447	σb/MPa
Yield Strength	182	σ 0.2 ≥/MPa
Elongation	17	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	621～985	-
HRC	30	-

Physical Properties

Thermal expansion	49-41	e-6/K
Thermal conductivity	34-14	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	4972-6312	째C
Density	1331-4933	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)
SA-268 S40800 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