C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
75/17
C22C 9/04 (2006.01) C22C 30/00 (2006.01) G04B 13/02 (2006.01) G04B 15/14 (2006.01) G04B 37/22 (2006.01)
Patent
CA 1091957
ABSTRACT OF THE DISCLOSURE A new copper-zinc-nickel manganese alloy is capable of being hardened and has good cold-working properties which enable it readily to be rolled, drawn and forged. The alloy can be used to stamp complicated parts such as escapement forks and pinions for clockwork mechanisms. This new alloy comprises, 36 to 44% copper, 21 to 28% in toto of zinc with or without tin and/or indium, provided that tin and/or indium if present amount together to at most 10%, 18 to 25% in toto of nickel with or without cobalt, provided that cobalt if present amounts to at most 5%, 10 to 18% manganese, up to 0.5% of at least one of beryllium and the rare- earth metals, provided that neither the beryllium content nor the rare-earth metals content exceeds 0.3%, additives from the group lithium, magnesium, calcium and titanium, serving as de-oxidising elements, and iron as the usual impurity.
282751
Institut Dr. Ing. Reinhard Straumann Ag
Swabey Ogilvy Renault
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