Die-casting brass alloy which is resistant to dezincification
AssigneeTour & Andersson AB
InventorsCarl-Åke Däcker, Ulla Langelotz
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Abstract
The present invention relates to a die-casting brass alloy having a dezincification resistance, which is lower than 100 μm for a separate value according to British Standard BS 2872 in a die-casting condition (i.e. without a subsequent phase transforming heat treatment). The alloy according to the invention is characterized by the following composition: Cu: 63.6 weight-% Pb: 1.8 weight-% Si: 0.73 weight-% Al: 0.07 weight-% As: 0.06 weight-% Ni: 0.2 weight-% Sn: 0.3 weight-% Fe: 0.25 weight-% B: 8 ppm Other impurities: max. 0.3 weight-% Zn: remainder.
Claims2
A die-casting brass alloy resistant to dezincification, the alloy comprising a composition of:
- Cu:
- 63.6-65.0 weight-% Pb:
- 1.8-2.2 weight-% Si:
- 0.6-0.9 weight-% Al:
- 0.03-0.1 weight-% As:
- 0.03-0.1 weight-% Ni:
- 0.2-less than 0.5 weight-% Sn:
- max 0.5 weight-% Fe:
- 0.1-0.5 weight-% B:
- 8-less than 15 ppm Other impurities:
- max. 0.3 weight-% Zn:
- remainder.
A diecasting brass alloy having a dezincification resistance lower than 100 μm, characterized by the following composition:
- Cu:
- 63.6 weight-% Pb:
- 1.8 weight-% Si:
- 0.73 weight-% Al:
- 0.07 weight-% As:
- 0.06 weight-% Ni:
- 0.2 weight-% Sn:
- 0.3 weight-% Fe:
- 0.25 weight-% B:
- 8 ppm Other impurities:
- max. 0.3 weight-% Zn:
- remainder.
Dependencies are inferred from the claim text.