Novel aluminum alloy and produts thereof

Abstract

The present invention provides a high corrosion resistant aluminum alloy consisting essentially of (by weight %): 0.30-1.25% Mn, 0.10-1.20% Si, 0.05-0.25% Cr, 0.05-0.2% Zr, 0.08-0.30% Ti, less than 0.03% Zn, less than 0.03% Cu, and up to 0.20% Fe, balance aluminum and inevitable impurities. The present invention also relates to articles made of the alloy.

1 . A high corrosion resistant aluminum alloy consists essentially of (by weight %):
 30-1.25% Mn;   10-1.20% Si;   0.05-0.25% Cr;   0.05-0.20% Zr;   08-0.30% Ti;   less than 0.03% Zn;   less than 0.03% Cu; and   up to 0.20% Fe;   balance aluminum and inevitable impurities.   
     
     
         2 . The alloy of  claim 1 , wherein Mn content is preferably 0.50-1.00%, and more preferably 0.70-0.90%. 
     
     
         3 . The alloy of  claim 1 , wherein Si content is preferably 0.20-0.80%, and more preferably 0.30-0.60%. 
     
     
         4 . The alloy of  claim 1 , wherein Cr content is preferably 0.06-0.18%, and more preferably 0.08-0.12%. 
     
     
         5 . The alloy of  claim 1 , wherein Zr content is preferably 0.08-0.20%, and more preferably 0.10-0.15%. 
     
     
         6 . The alloy of  claim 1 , wherein Ti content is preferably 0.10-0.25%, and more preferably 0.12-0.20%. 
     
     
         7 . The alloy of  claim 1 , wherein Fe content is preferably up to 0.15%, and more preferably up to 0.10%. 
     
     
         8 . Article in the form of pipes, wires, stripes, rods, plates or bars, characterized in that the article is made of an alloy according to  claim 1 . 
     
     
         9 . The article of  claim 8 , wherein the article is a material for a heat exchanger.