Method of manufacturing a copper-nickel-silicon alloy and...

C - Chemistry – Metallurgy – 22 – C

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C22C 9/06 (2006.01) C22F 1/08 (2006.01) H01L 23/02 (2006.01) H01L 23/10 (2006.01)

Patent

CA 2144003

The invention relates to a method of manufacturing a copper- nickel-silicon alloy with a composition Cu (balance), Ni 1.5 - 5.5%, Si 0.2 - 1.0%, Fe 0 - 0.5% and Mg 0 - 0.1% tall in percent by weight), and use of the alloy for pressure-englazable casings. The method permits an alloy with a very high elastic limit with very good conductivity and good cold deformability and differs from the conventional method of manufacturing such alloys by heating to about 950°C and fairly rapid cooling after a preceding cold rolling operation. An improvement in the properties can be achieved by ageing of the alloy at 300°C to 600°C for several hours.

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