EP 3847289 B1 20240501 - ALUMINUM ALLOY FOR HEAT EXCHANGER FINS
Title (en)
ALUMINUM ALLOY FOR HEAT EXCHANGER FINS
Title (de)
ALUMINIUMLEGIERUNG FÜR WÄRMETAUSCHERRIPPEN
Title (fr)
ALLIAGE D'ALUMINIUM POUR AILETTES D'ÉCHANGEUR DE CHALEUR
Publication
Application
Priority
- US 201862727806 P 20180906
- US 2019049324 W 20190903
Abstract (en)
[origin: US2020080172A1] An aluminum alloy fin stock material comprising about 0.9-1.4 wt. % Si, 0.3-0.6 wt. % Fe, 0.20-0.60 wt. % Cu, 1.0-1.7 wt. % Mn, 0.01-0.25 wt. % Mg, 0.01-3.0 wt. % Zn, up to 0.10 wt. % Ti, with remainder Al and impurities at ≤0.15 wt. %. The aluminum alloy fin stock material is produced by a process including the steps of direct chill casting an ingot, hot rolling the ingot after the direct chill casting, cold rolling the aluminum alloy to an intermediate thickness, inter-annealing the aluminum alloy cold rolled to an intermediate thickness at a temperature between 200 and 400° C., and cold rolling the material after inter-annealing to achieve % cold work (% CW) of 20 to 40%. The aluminum alloy fin stock material possesses an improved combination of pre- and/or post-braze strength, thermal conductivity, sag resistance and/or corrosion potential.
IPC 8 full level
C22C 21/02 (2006.01); C22C 21/10 (2006.01); C22F 1/043 (2006.01); C22F 1/053 (2006.01)
CPC (source: EP US)
C22C 21/00 (2013.01 - EP); C22C 21/02 (2013.01 - EP US); C22C 21/10 (2013.01 - EP); C22F 1/043 (2013.01 - US); C22F 1/053 (2013.01 - EP); F28F 21/084 (2013.01 - US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
US 2020080172 A1 20200312; CN 112654726 A 20210413; EP 3847289 A1 20210714; EP 3847289 B1 20240501; JP 2021535285 A 20211216; JP 2023061968 A 20230502; WO 2020051129 A1 20200312
DOCDB simple family (application)
US 201916559142 A 20190903; CN 201980058293 A 20190903; EP 19769682 A 20190903; JP 2021533412 A 20190903; JP 2023010423 A 20230126; US 2019049324 W 20190903