J421X is rutile-based carbon steel electrode that is specially designed for downward welding. It has good welding usability that enables it to operate on AC/DC and perform all-position welding, the slag removal is easy and to have a nice bead appearance. Its characteristic of easy operation gives it easy striking and re-striking.
It is suitable for welding zinc-coated steel plates and carbon steel plates that are used in shipbuilding. It is especially suitable for performing downward welding and intermittent welding on the thin plates.
Chemical Composition (%)
Mechanical Properties of Deposited Metal
|General Result||0.078||0.39||0.18||0.018||0.023||0.020||0.032||0.008||0.007| Reference Current (AC/DC)
|Test Item||Rm (N/mm2)||Rel (N/mm2)||A (%)||KV2(J) 0ºC|
|Amperage||40 ~ 70||50 ~ 90||90 ~ 130||150-210||170 ~ 230|