An improved aluminum alloy fin stock is described having both a high strength and a high thermal conductivity. The fin stock contains 1.2-1.8% Fe, 0.7-0.95% Si, 0.3-0.5% Mn, 0.3-1.2% Zn and the balance Al, and is produced by continuously strip casting the alloy at a cooling rate greater than 10.degree. C./sec. but less than 200.degree. C./sec., hot rolling the strip to a re-roll sheet without homogenization, cold rolling the re-roll sheet to an intermediate gauge, annealing the sheet and cold rolling the sheet to final gauge. This fin stock has a conductivity after brazing of greater than 49.8% IACS.

Se describe una acción mejorada de la aleta de la aleación de aluminio teniendo una alta fuerza y una alta conductividad termal. La acción de la aleta contiene 1.2-1.8% FE, 0.7-0.95% silicio, 0.3-0.5% manganeso, 0.3-1.2% zn y el al del balance, y es producida por continuamente la tira que echa la aleación en una tarifa que se refresca mayor que 10.degree. C./sec. pero menos que 200.degree. C./sec., balanceo caliente la tira a una hoja del volver a enrollar sin la homogeneización, frío que rueda la hoja del volver a enrollar a una galga intermedia, recociendo la hoja y el balanceo frío la hoja a la galga final. Esta acción de la aleta tiene una conductividad después de soldar de mayor de 49.8% IACS.

 
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