Metrode Nimax-B2L description: These consumables deposit nickel-molybdenum weld metal with very low carbon and silicon levels appropriate for alloy B-2, although it is equally suitable for the original alloy B, now obsolete in wrought form. In addition, specially controlled levels of iron and chromium ensure good as-welded ductility in multipass deposits. These modifications bring the composition close to the more recent alloys B-3 and B-4 which have better microstructural stability and weldability than alloy B-2. There are no electrode specifications for these alloys at present, and these consumables are therefore offered as an acceptable candidate within current specification limits. These alloys are designed to resist hydrochloric acid at all concentrations and temperatures up to boiling point under non-oxidising conditions.