Oerlikon Carbofil KV3 description: CARBOFIL KV3 is used for welding of similar composition and 1/2Mo1/4V and 1%Cr1Mo steels. Used in the construction of steam generating plant operating at temperatures <600 C. Also suitable for the welding of 1 1/4Cr 1Mo steels where improved resistance to hydrogen attack or corrosion by sulphur is required. Main applications are welding of boilers, plates and tubes as well as oil refineries e.g. in crack plants produced from mainly 10CrMo9-10 (ASTM A335 Gr. P/T22).