2525. NAUMANN, F. K. (F. Krupp A. G.). [Reaction Kettles of Decarbonization-Resisting Alloy.] German Patent 692,226, May 16, 1940 (Cl. 18 d-2.20). Chem. Abs., vol. 35, 1941, p. 4340.

Such vessels, of great importance in hydrogenation and synthetic-ammonia works, are made of steels containing Ti fourfold the amount of C. These steels contain also 1 or more metals, for example, Si, Mn, Ni, Co, Cr, W, Mo, or V.

NEIMAN, P. E. See abs. 330.