Esab Atom Arc 7018-B2L description: Atom Arc 7018-B2L is a 1 1/4 Cr - 1/2 Mo electrode with sensitivity extra low carbon content. The low carbon content in the weld metal is beneficial in reducing cracking of weldments. Atom Arc 7018-B2L is carefully engineered to produce a stable arc and good slag release when welding low-alloy steels in the categories of 0.5% Cr - 0.5% Mo, 1% Cr - 0.5% Mo, 1.25% Cr - 0.5% Mo steels. Most grades of these steels are used in power piping, boiler work, castings and forgings.