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 (%)
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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