Bohler CN 13/4-MC (F) description: Metal cored wire for welding of hydro turbine components made of soft martensitic 13% Cr 4% Ni alloyed cast steels. BÖHLER CN 13/4-MC (F) offers favourable spray arc or pulsarc characteristics, minimum spatter formation, flat and smooth bead profiles, excellent wetting behaviour and safe penetration. It is easy to operate in all welding positions. The hydrogen content is low (maximum 5 ml/100 g acc. to AWSA 4.3-93). Significant gains in productivity can be realized by higher deposition rates and reduced post weld grinding when compared to GMAW using solid wires.