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Copper alloy with a golden visual appearance

  • US 6,432,556 B1
  • Filed: 04/28/2000
  • Issued: 08/13/2002
  • Est. Priority Date: 05/05/1999
  • Status: Expired due to Term
First Claim
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1. A copper alloy resistant to short range ordering and having a golden visual appearance consisting essentially, by weight, of:

  • from 5% to 10% of manganese;

    from 10% to 14% of zinc;

    from 3.5% to 4.5% of nickel;

    less than 0.07% aluminum; and

    the balance copper and inevitable impurities, said copper alloy having an electrical conductivity in excess of 4% IACS at eddy current gauge exciting frequencies of between 60 kHz and 480 kHz.

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