Strip of aluminium alloy for manufacturing brazed heat exchangers
AssigneeConstellium Neuf-Brisach
InventorsBechir Chehab, Armelle Danielou, Pablo Lorenzino, Lionel Peguet
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Abstract
A strip intended for the manufacture of brazed heat exchangers, having a core made of an alloy with the composition (weight %): Si: 0.10-0.30%, preferably 0.15-0.25% Fe<0.25%, preferably 0.1-0.2% Cu: 0.85-1.1%, preferably 0.9-1.0% Mn: 1.2-1.7%, preferably 1.2-1.4% Mg: 0.1-0.3%, preferably 0.1-0.21% Zn<0.1% Ti 0.05-0.20%, preferably 0.06-0.15%, more preferably 0.06-0.1% optionally up to 0.15% of Bi and/or Y other elements <0.05% each and <0.15% in total, remainder aluminium.
Claims20
A strip intended for manufacture of a brazed heat exchanger, having a core made of an aluminium alloy with the composition (weight %):
- Si:
- 0.10-0.30%,
- Fe<0.25%,
- Cu:
- 0.85-1.1%,
- Mn:
- 1.2-1.7%,
- Mg:
- 0.1-0.3%,
- Zn<0.1%
- Ti 0.05-0.20%,
- other elements <0.05% each and <0.15% in total,
- remainder aluminium,
- wherein the strip is cladded on one or two face(s) with a brazing aluminium alloy,
- wherein the strip is cladded on one or two face(s) with an interlayer aluminium alloy, placed between the core and the brazing aluminium alloy, the interlayer aluminium alloy comprises:
- Si:
- up to 0.5%;
- Fe:
- up to 0.7%;
- Mn:
- from 0.3 to 1.4%;
- Cu:
- up to 0.3%;
- other elements <0.05% each and <0.15% in total;
- remainder aluminium.
Dependencies are inferred from the claim text.