ALUMINUM ALLOY SHEET FOR CROSS FIN AND PRODUCTION THEREOF

摘要

AN ALUMINUM ALLOY SHEET FOR A CROSS FIN OF A HEAT EXCHANGER, CHARACTERIZED IN THAT THE SHEET CONSISTS OF 0.05 WTOR MORE AND LESS THAN 0.30 WTFE, 0.001 TO 0.02 WTOF TI, AND THE BALANCE CONSISTING OF AI AND UNAVOIDABLE IMPURITIES, THE UNAVOIDABLE IMPURITIES INCLUDING SI IN AN AMOUNT OF LESS THAN 0.15 WT; THAT THE SHEET CONSISTS OF A CONTINUOUS-CAST ALUMINUM ALLOY SHEET SUBSTANTIALLY COMPOSED OF A SUBGRAIN STRUCTURE CONTAINING NO INTERMETALLIC COMPOUNDS GREATER THAN 5 µM IN TERMS OF A SIZE MEASURED IN A CROSS-SECTION OF THE SHEET; AND THAT THE SHEET HAS AN ELECTRICAL CONDUCTIVITY OF 59IACS OR MORE.