Esab Arcaloy 320LR-16 description: Arcaloy 320LR-16 electrodes are designed for the welding of Carpenter 20Cb-3 and equivalent stainless steels. This electrode is specifically designed to resist the hot cracking and microfissuring often encountered when welding fully austenitic stainless steels. These properties are achieved by closely controlling the residual elements detrimental to the weld deposit.