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> Mild steel tig welding rod - sae 4340-3/32"- 1LB. pack
Mild steel tig welding rod - sae 4340-3/32"- 1LB. pack
High-Performance Mild Steel TIG Welding Rod. SAE 4340 TIG welding
rod. AISI: 4340 grade. Class: 4340.
Approximate number of rods per 1 lb. pack: 12 - 16
SAE4340 is a low alloy, copper-coated wire designed for the welding of
heat-treatable, low alloy steels such as the SAI / AISI 4300 series where
higher carbon grades are used or where greater tensile strengths are desired.
A pre-heat of 400 F - 550 F is required for some of the higher carbon
grades to prevent cracking. Proper heat-treating procedures will produce
tensile strengths of 190,000 - 265,000 psi. Hardness varies with heat-
