Abstract
Sulphides in steel were presumed to exist as iron sulphide and manganese sulphide, and the former had an influence on the brittleness of steel at high temperatures. In practice, desulphurization was carried out and the remaining sulphur was converted into manganese sulphide by addition of manganese.
Several methods which had been heretofore published for determination of these two sulphides were considered to be unreliable, In this investigation the electrolytic method was adopted, and from its residue, iron sulphide and manganese sulphide could be determined respectively.
In the analysis of some low carbon steels containing several amounts of manganese and sulphur, generally satisfactory results were obtained.
