Abstract: The invention relates to an aluminium composite material having at least one core layer of an aluminium core alloy and at least one corrosion protection layer arranged on the core layer. The aluminium composite material has improved corrosion resistance, in particular avoids coarse detachments under corrosive conditions, through use of a corrosion protection layer with the following composition in wt %: Si?0.10%, Fe?0.6%, Cu?0.2%, 0.9%?Mn?1.2%, Mg?0.10%, Cr?0.3%, Zn?0.1%, Ti?0.1%, the rest Al and unavoidable impurities, individually at most 0.05%, in total at most 0.15%. The invention furthermore relates to a method for producing an aluminium composite material, a use as well as a heat exchanger or a component of a heat exchanger.

Abstract: A method for producing a roll-clad aluminum workpiece and an associated roll-clad aluminum workpiece are provided, wherein a core ingot is produced from an aluminum alloy and at least one cladding piece is produced from a cladding material, wherein at least one groove is introduced into the core ingot and/or into a layer applied to the core ingot, wherein the cladding piece is inserted into the groove, and wherein the core ingot is hot-rolled after the cladding piece has been inserted, the width of the groove being equal to or less than the core ingot width. A use of such a roll-clad aluminum workpiece is also provided for producing a soldered workpiece, in particular a folding tube.

Abstract: A composite material can include a carrier material that is coated, at least over part of the surface, with a corrosion protection layer made of an aluminum alloy. The composite material can provide a defined, effective, durable corrosion protection and simultaneously have a high recycling potential. The aluminum alloy of the corrosion protection layer can have the following composition in % by weight: 0.8 ? Mn ? 1.8 Zn ? 0.05 Cu ? 0.05 Si ? 1.0 Cr ? 0.25 Zr ? 0.25 Mg ? 0.10 remainder aluminum and unavoidable impurities, individually a maximum of 0.05% by weight, in total a maximum of 0.15% by weight.

Abstract: A method for producing a roll-clad aluminium workpiece and an associated roll-clad aluminium workpiece are provided, wherein a core ingot is produced from an aluminium alloy and at least one cladding piece is produced from a cladding material, wherein at least one groove is introduced into the core ingot and/or into a layer applied to the core ingot, wherein the cladding piece is inserted into the groove, and wherein the core ingot is hot-rolled after the cladding piece has been inserted, the width of the groove being equal to or less than the core ingot width. A use of such a roll-clad aluminium workpiece is also provided for producing a soldered workpiece, in particular a folding tube.

Abstract: A composite material can include a carrier material that is coated, at least over part of the surface, with a corrosion protection layer made of an aluminum alloy. The composite material can provide a defined, effective, durable corrosion protection and simultaneously have a high recycling potential. The aluminum alloy of the corrosion protection layer can have the following composition in % by weight: ? 0.8 ?Mn ? 1.8 Zn ? 0.05 Cu ? 0.05 Si ? 1.0 Cr ? 0.25 Zr ? 0.25 Mg ? 0.10 remainder aluminum and unavoidable impurities, individually a maximum of 0.05% by weight, in total a maximum of 0.15% by weight.

Abstract: A flat, rolled semi-finished product made of an aluminum alloy and a method of producing the product are disclosed. The aluminum alloys has the following alloy proportions in weight percentages: 2?Mg?5, Mn?0.5, Cr?0.35, Si?0.4, Fe?0.4, Cu?0.3, Zn?0.3, Ti?0.15, other elements totaling no more than 0.15 and separately not exceeding 0.05, and the remainder consists of Al. The semifinished product is rolled from a bar and, during the rolling process, is subjected to at least one intermediate tempering between two cold reduction passes and to a final soft-annealing in a chamber furnace. A semi-finished product of this type does not have any flow lines after shaping or deep-drawing if the degree of reshaping before the first intermediate tempering is equal to at least 50%, the degree of reshaping before the final soft-annealing is no greater than 30%, and the semifinished product is drawn by 0.1 to 0.5% after the final soft-annealing.

Abstract: The invention relates to a heat-resistant aluminium alloy for heat exchangers, a method for producing an aluminium strip or sheet for heat exchangers, and a corresponding aluminium strip or sheet. The aim of the invention is to provide an aluminium alloy and an aluminium strip or sheet which has a good recycling capacity, a Solidus temperature of at least 620° C., and an improved heat-resistance after welding. To this end, the inventive aluminium alloy comprises the following parts of alloy constituents in wL %: 0.3%?Si?1%, Fe?0.5%, 0.3%?Cu?0.7%, 1.1%?Mn?1.8%, 0.15%?Mg?0.6%, 0.01%?Cr?0.3%, Zn?0.10%, Ti?0.3%, unavoidable impurities separately representing a maximum of 0.1%, and together a maximum of 0.15%, the remainder being aluminium.

Abstract: The invention related to a flat, rolled semi-finished product made of an aluminum alloy. The aluminum alloys has the following alloy proportions in weight percentages: 2?Mg?5, Mn?0.5 Cr?0.35, Si?0.4, Fe?0.4, Cu?0.3, Zn?0.3, Ti?0.15, other elements totaling no more than 0.15 and separately not exceeding 0.05, and the remainder consists of Al. The semifinished product is rolled from a bar (4) and, during the rolling process, is subjected to at least one intermediate tempering between two cold reduction passes and to a final soft-annealing in a chamber furnace (7, 9). The invention also relates to a method for producing said semi-finished product. A semi-finished product or this type doles not have any flow lines after shaping or deep-drawing if, according to the invention, the degree of reshaping before the first intermediate tempering is equal to at least 50% and, before the final soft-annealing, is no greater than 30%, and the semifinished product is drawn by 0.1 to 0.5% after the final soft-annealing.

Abstract: The present invention relates to a method for producing AlMn strips or sheets for producing components by soldering, wherein a precursor material is produced from a melt which contains (in weight-percent) Si: 0.3-1.2%, Fe: ≦0.5%, Cu: ≦0.1%, Mn: 1.0-1.8%, Mg: ≦0.3%, Cr+Zr: 0.05-0.4%, Zn: ≦0.1% , Ti: ≦0.1% , Sn: ≦0.15%, and unavoidable companion elements, whose individual amounts are at most 0.05% and whose sum is at most 0.15%, as well as aluminum as the remainder, wherein the precursor material is preheated at a preheating temperature of less than 520° C. over a dwell time of at most 12 hours, wherein the preheated precursor material is hot rolled into a hot strip using a final hot rolling temperature of at least 250° C., wherein the hot strip is cold rolled into a cold strip without intermediate annealing.

Abstract: The present invention related to a method for producing AlMn strips or sheets for producing components by soldering, wherein a precursor material is produced from a melt which contains (in weight-percent) Si: 0.3-1.2%, Fe:≦0.5%, Cu:≦0.1%, Mn: 1.0-1.8%, Mg:≦0.3%, Cr+Zr: 0.05-0.4%, Zn:≦0.1%, Ti:≦0.1%, Sn:≦0.15%, and unavoidable companion elements, whose individual amounts are at most 0.05% and whose sum is at most 0.15%, as well as aluminum as the remainder, wherein the precursor material is preheated at a preheating temperature of less than 520° C. over a dwell time of at most 12 hours, wherein the preheated precursor material is hot rolled into a hot strip using a final hot rolling temperature of at least 250 ° C., wherein the hot strip is cold rolled into a cold strip without intermediate annealing.