Bohler 20 MVW-IG description: GTAW rod for creep resistant, quenched and tempered 12% Cr steels in turbine and boiler fabrication and in the chemical industry. Preferably used for the base metal X20CrMoV12-1. Approved in long-term condition up to +650C service temperature. The deposit exhibits high creep rupture strength and good toughness properties under long term stresses.