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ER 308 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of ER 308

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AMS ER 308

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This page is mainly introduced the ER 308 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of ER 308,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
The welding materials are classified according to chemical composition. The values contained in the mechanical properties are not requirements of this specification. They are obtained from weld metal specified in A5.4.

Steel Garde:ER 308
Type:Stainless Steels
Country:USA
Standard:AMS
Standard Number:

ITEM Standard Number Descriptions

1 SFA-5.9/SFA-5.9M Bare Stainless Steel Welding Electrodes and Rods
Metallographic Structure:Austenite
Application:This filler metal is the most often used to weld similar composition, in particular, Type 304.

ITEM	Standard Number	Descriptions
1	SFA-5.9/SFA-5.9M	Bare Stainless Steel Welding Electrodes and Rods

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
308	UNS	USA
308	UNS	USA
A 167 Type 308	SAE	USA
A 276 308	SAE	USA
A 314 308	SAE	USA
A 473 308	SAE	USA
A 580 Type 308	SAE	USA
A 959 Type 308	SAE	USA
A 167 S30800	SAE	USA
A 276 S30800	SAE	USA
A 314 S30800	SAE	USA
A 473 S30800	SAE	USA
A 580 S30800	SAE	USA
S30800	SAE	USA
308L	AMS	USA
ER 308L	International	USA
S30803	AISI	USA
A 167 S30815	SAE	USA
A 213 S30815	SAE	USA
A 240 S30815	SAE	USA
A 249 S30815	SAE	USA
A 276 S30815	SAE	USA
A 312 S30815	SAE	USA
A 358 S30815	SAE	USA
A 409 S30815	SAE	USA
A 473 S30815	SAE	USA
A 479 S30815	SAE	USA
A 813 S30815	SAE	USA
A 814 S30815	SAE	USA
A 943 S30815	SAE	USA
A 959 S30815	SAE	USA
S30815	AISI	USA
SA-213 S30815	AMS	USA
SA-240 S30815	AMS	USA
SA-249 S30815	AMS	USA
SA-276 S30815	AMS	USA
SA-312 S30815	AMS	USA
SA-358 S30815	AMS	USA
SA-409 S30815	AMS	USA
SA-479 S30815	AMS	USA
SA-813 S30815	AMS	USA
SA-814 S30815	AMS	USA
A 479 ER308	SAE	USA
ER 308	International	USA
SA-479 Type ER308	AMS	USA
S30880	AISI	USA
A 167 S30815	SAE	USA
A 213 S30815	SAE	USA
A 240 S30815	SAE	USA
A 249 S30815	SAE	USA

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C		0.08
Si	0.25	0.60
Mn	1.00	2.50
P		0.03
S		0.03
Cr	19.5	22.0
Ni	9.00	11.0
Cu		0.75
Mo		0.75

Mechanical Properties

Tensile strength	662～388	σb/MPa
Yield Strength	820	σ 0.2 ≥/MPa
Elongation	77	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	724～748	-
HRC	30	-

Physical Properties

Thermal expansion	84-85	e-6/K
Thermal conductivity	77-32	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	4875-6843	째C
Density	3256-9410	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)
ER 308 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