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US 12,662,720 B2Granted
Copper alloy, semifinished product and electrical connecting element comprising a copper alloy
AssigneeWieland-Werke AG
InventorsPatrick Schober, Julia Heilemann, Timo Allmendinger, Matthias Nöhrer
Life of this patent
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Abstract
The composition of a copper alloy is as follows: Sn: 3.0-6.5%; Ni: 0.30-0.70%; P: 0.15-0.40%; S: 0.10-0.40%; Zn: optionally up to 0.20%; Fe: optionally up to 0.50%; Mn: optionally up to 0.50%; Pb: optionally up to 0.25%, with the balance being copper and unavoidable impurities. The ratio of fraction of Ni to fraction of P is at least 1.1 and at most 2.8, and the alloy include nickel phosphides.
Claims20
A copper alloy having a composition consisting of:
- Sn:
- 3.0-6.5% by weight,
- Ni:
- 0.30-0.70% by weight,
- P:
- 0.15-0.40% by weight,
- S:
- 0.10-0.40% by weight,
- Zn:
- optionally up to 0.20% by weight,
- Fe:
- optionally up to 0.50% by weight,
- Mn:
- optionally up to 0.50% by weight,
- Pb:
- optionally up to 0.25% by weight,
- the balance being copper and unavoidable impurities,
- wherein the ratio of fraction of Ni to fraction of P is at least 1.1 and at most 2.8 and wherein the alloy comprises nickel phosphides.
15 more elements
Dependencies are inferred from the claim text.