Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 146,010 pages of information and 231,555 images on early companies, their products and the people who designed and built them.
Makers of Balfalloy, of Capital Steel Works, Sheffield.
1865 Company founded as Seebohm and Dieckstahl
1899 Became private company. Arthur Balfour became managing director.
WWI Name changed to Arthur Balfour and Co as anti-German feelings increased
1937 Steel manufacturers. "Balfalloy" Steel Products. "Capital" Steel Products. "Griffin" Steel Products. 
1961 High grade steel manufacturers and processors and small tool makers. 
1961 Balfour and Darwins was formed by merging Arthur Balfour and Darwins Group of Sheffield. About 75 percent of the products were similar. Initially a private company, by September was publically quoted.
1967 One of the larger makers of high speed and tool steels not subject to nationalisation