6005A: Practical Evidence of Advantages
for Extruders and Their Customers
Jonathan Pangborn 1, Eskild Hoff 2, Richard Dickson 3, and Chris Devadas 4,
1 Hydro Aluminum Phoenix, Phoenix, Arizona, USA
2 Hydro Aluminum Technology Center, Holland, Michigan, USA
3 Hydro Aluminum Metal Markets North America, and
4 Hydro Aluminium Metal Markets Qatar
Track: EXTRUSION/DIE PRACTICAL - Tooling and Performance
ABSTRACT – As the times change, extruders are forced to become more competitive on price, surface
quality, and tolerance capabilities. Past and present work has shown that alloy AA6005A offers an excellent combination of properties and processability that is desirable to extruders and end users alike. Documentation shows that in nearly all cases 6005A is preferable to the competing alloys, due to its desirable combination of properties. Alloy 6005A has been shown to have improved corrosion resistance, toughness, formability, and fatigue resistance, while maintaining weldability and other performance aspects compared to similar alloys. In addition, 6005A exhibits these characteristics even at reduced press quench rates, allowing for tighter dimensional tolerances, more uniform properties across the section, and improved surface quality, all at higher rates of production. In this paper, we will outline a major, successful implementation of 6005A on a product line involving non-symmetrical, heavy-walled, multi-void hollows previously produced in 6061. Through this example, we will present some typical levels of improvement possible by replacing AA6061 with AA6005A. The move to 6005A has resulted in improved quality, decreased scrap, and increased press productivity. Other relevant advantages will also be outlined.
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