Bohler FOX FF description: Basic electrode core wire alloyed for welding analogous, heat resistant rolled, forged and cast steels as well as heat resistant ferritic CrSiAl steels. For weld joints exposed to reducing, sulphurous gases, the final layer has to be deposited by means of FOX FA, e.g. in annealing plants, hardening plants, steam boiler construction, the crude oil industry and the ceramics industry. Scaling resistant up to +1000C.