ALUMINIUM ALLOY HAVING HIGH-STRENGTH AT ELEVATED TEMPERATURE FOR USE IN A HEAT EXCHANGER

• Main Authors: BÜRGER, ACHIM, JACOBY, BERND, KIRKHAM, STEVEN
• Format: Patent
• Language: English; Polish
• Published: 08.04.2024
• Subjects: ALLOYS; BLASTING; CHEMISTRY; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OFGENERAL APPLICATION; FERROUS OR NON-FERROUS ALLOYS; HEAT EXCHANGE IN GENERAL; HEATING; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; LIGHTING; MACHINE TOOLS; MECHANICAL ENGINEERING; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WEAPONS; WELDING; WORKING BY LASER BEAM

The invention relates to a wrought aluminium alloy, ideally for use as core alloy in a brazing sheet product, and having increased post-braze strength at elevated temperatures and which aluminium alloy can be used for use in heat exchangers. The wrought aluminium alloy comprising (in wt.%): Mn 0.5% to 1.8%, Cu 0.4% to 2.2%, Sc 0.01 % to 0.6%, Zr 0.01 % to 0.4%, Ag up to 0.6%, optional one or both of 0.03% to 0.5% Cr and 0.01 % to 0.6% Ti, Mg up to 0.6%, Fe up to 0.7%, Si up to 0.8%, Zn up to 0.5%, balance aluminium and impurities.