Aluminum piping material for automobile heat exchanger

Abstract

An aluminum piping material for an automobile heat exchanger, containing 0.05 to 0.4 mass % of Si, 0.05 to 0.4 mass % of Fe, 0.6 mass % or lower of Cu. 0.15 to 1.5 mass % of Mn, 0.05 to 0.3 mass % of Ti, and 0.05 to 0.3 mass % of V, with the balance being Al and inevitable impurities, wherein the aluminum piping material is excellent in corrosion resistance.

1 . An aluminum piping material for an automobile heat exchanger, 
 comprising 0.05 to 0.4 mass % of Si, 0.05 to 0.4 mass % of Fe, 0.6 mass % or lower of Cu, 0.15 to 1.5 mass % of Mn, 0.05 to 0.3 mass % of Ti, and 0.05 to 0.3 mass % of V, with the balance being Al and inevitable impurities,    wherein the aluminum piping material is excellent in corrosion resistance.    
   
   
       2 . An aluminum piping material for an automobile heat exchanger, which is produced by: 
 subjecting an aluminum alloy ingot having a composition according to  claim 1  to hot extrusion, to form a raw pipe for extrusion; and    subjecting the resultant raw pipe to drawbench drawing or continuous drawing, to form said aluminum piping material,    wherein the aluminum piping material is excellent in corrosion resistance.    
   
   
       3 . The aluminum piping material for an automobile heat exchanger according to  claim 1 , wherein the Cu content is 0.05 mass % or lower.  
   
   
       4 . An aluminum piping material for an automobile heat exchanger, which is produced by: 
 subjecting an aluminum alloy ingot having a composition according to  claim 3  to hot extrusion, to form a raw pipe for extrusion; and    subjecting the resultant raw pipe to drawbench drawing or continuous drawing, to form said aluminum piping material,    wherein the aluminum piping material is excellent in corrosion resistance.    
   
   
       5 . An aluminum piping material for an automobile heat exchanger, 
 comprising 0.05 to 0.4 mass % of Si, 0.05 to 0.4 mass % of Fe, 0.6 mass % or lower of Cu, 0.15 to 1.5 mass % of Mn, 0. 05 to 0.3 mass % of Ti, 0.05 to 0.3 mass % of V, and at least one selected from the group consisting of 0.05 to 0.4 mass % of Mg, 0.05 to 0.2 mass % of Cr, and 0.05 to 0.2 mass % of Zr, with the balance being Al and inevitable impurities,    wherein the aluminum piping material is excellent in corrosion resistance.    
   
   
       6 . An aluminum piping material for an automobile heat exchanger, which is produced by: 
 subjecting an aluminum alloy ingot having a composition according to  claim 5  to hot extrusion, to form a raw pipe for extrusion; and    subjecting the resultant raw pipe to drawbench drawing or continuous drawing, to form said aluminum piping material,    wherein the aluminum piping material is excellent in corrosion resistance.    
   
   
       7 . The aluminum piping material for an automobile heat exchanger according to  claim 5 , wherein the Cu content is 0.05 mass % or lower.  
   
   
       8 . An aluminum piping material for an automobile heat exchanger, which is produced by: 
 subjecting an aluminum alloy ingot having a composition according to  claim 7  to hot extrusion, to form a raw pipe for extrusion; and    subjecting the resultant raw pipe to drawbench drawing or continuous drawing, to form said aluminum piping material,    wherein the aluminum piping material is excellent in corrosion resistance.