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4130

AISI 4130

4130 is a low alloy, copper-coated steel wire designed for TIG, MIG and
submerged arc welding of heat-treatable, lowalloy steels such as the SAE 4100 series and 8630 as well as steel castings with similar hardening characteristics. A pre-heat temperature of 300°F-350°F is required for some of the higher carbon grades in order to prevent cracking. Many
other grades can be welded without a preheat.

TYPICAL WIRE CHEMISTRY (%)

-

ER80S-B2

C

0.310

Mn

0.520

P

0.012

S

0.023

Si

0.280

Cr

0.930

Mo

0.200

TYPICAL MECHANICAL PROPERTIES OF WELD METAL

Proper heal treatment will produce a tensile strength of 150,000 to 160,000 psi.

RECOMMENDED SHIELDING GAS

98% Argon (Ar) and 2% Oxygen (O2) or pure Argon (Ar)

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