Diffusion engineers limited, an iso 9001-2000 accredited company, produces wide range of maintenance products. Low carbon dif fill is a part of those products. Low carbon dif fill produces excellent weld metal finish at dc [-] with argon as a shielding gas. Low carbon dif fill is used joining and surfacing of 25 cr/ 12 ni alloys in wrought or cast forms. Low carbon dif fill is used for joining of dissimilar steels to mild steels or stainless steel to low alloy steels.