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ER308H

AWS A5.9 ER308H I ASME SFA 5.9 ER308H
(ER308H also meets ER308)

308H is a austenitic stainless steel containing higher carbon over 308 used to weld base metal of similar composition types such as AISI 201(17-4 Mn), 202(18-5 Mn), 205, 301(17-7), 302(18-8), 304(19-9), 305(18-10), 308(20-10) also the high carbon grades. The higher carbon which provides higher tensile and creep strengths at higher temperatures. Also found in chemical engineering and petrochemical applications.

TYPICAL WIRE CHEMISTRY (%)

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AWS Spec

ER308H

C

0.04-0.08

0.049

Mn

0.50

0.05

Si

0.30-0.65

0.39

Cr

19.5-22.0

19.73

P

0.03

0.022

S

0.03

0.004

Ni

9.0-11.0

9.65

Cu

0.75

0.13

Typical mechanical properties of weld metal (C02 shielding gas)

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ER308H

Yield Strength (psi)

69-71

Ultimate Tensile Strength (psi)

90-92

Elongation in 2" (%)

35-38%

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