Alliages amagnétiques et spiraux de montre obtenus avec ces alliages

摘要

1,180,762. Iron alloys. SOC. METALLURGIQUE D'IMPHY. June 22, 1967 [July 21, 1966], No.28899/67. Heading C7A. Non-magnetic alloys consist, by weight, of The alloy given by way of example consists of Ni 27À4%, Cr 5À7%, C 0À7%, Si 0À3%, Mn 1À9%, W 3‹5%, Fe remainder. Balance springs, particularly for electrically operated watches, may be made of the alloy.