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ER420

AWS A5.9 ER420
ASME SFA 5.9 ER420

ER420 is a martensitic stainless steel similar to USA 410, but with a higher level of carbon. This increased carbon content gives the weld
deposit greater hardness, providing for excellent abrasion resistance as well as moderate corrosion resistance. Weld deposits will work-harden when put into service and so this filler metal is commonly used for surfacing applications. Preheat and post-weld heat treatment is recommended.

TYPICAL WIRE CHEMISTRY (%)

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ER420

C

0.28

Mn

0.42

Ni

0.40

Cr

13.13

Si

0.37

Mo

0.15