Naming a sector says very little about a line. The alloy says a great deal: it sets the press force, the quench rate, the ageing cycle and how gently the profile has to be handled from die to bundle. Select an alloy below to see where it is used and what it asks of the equipment.
Each alloy opens to show the applications it suits and the parts of the line its properties put under pressure.
The two alloys most extrusion plants run most of the time. Heat-treatable, corrosion-resistant and responsive to anodizing, they extrude readily at high ratio and are chosen when the profile has to look right as well as perform.
Best suited to
Line implication: high output at moderate tonnage, with surface quality decided in the quench and on the handling tables. Non-marking run-out, careful puller control and clean stacking matter more here than press size.
A medium-to-high strength alloy with very good corrosion resistance and weldability, specified where a structure has to carry load without carrying weight.
Best suited to
Line implication: harder to extrude than the 6060 family, so it asks for more tonnage per unit of section and a quench matched to the section thickness. Ageing capacity has to keep up with the press.
The strongest of the common 6000-series alloys, with excellent corrosion resistance and good weldability. Load-bearing performance comes first and surface finish second.
Best suited to
Line implication: the most demanding of the structural alloys on press force, tooling life and quench rate. Container and die tooling wear faster, which is why the spares list matters as much as the press.
The usual choice for thin-wall, complex hollow sections — good strength with the extrudability needed to fill a difficult die.
Best suited to
Line implication: thin walls cool fast and distort easily, so puller synchronisation, stretcher control and cooling-table support decide whether the section arrives straight.
A low-iron alloy developed for bright, high-clarity anodizing — specified when the profile is meant to be looked at, not just installed.
Best suited to
Line implication: the whole line becomes a surface-quality problem. Contact points, roller materials, transfer marks and cleanliness through quench and handling determine yield far more than press capacity does.
EN AW-1050, aluminium at 99.5% purity. Soft, and the more conductive of the two conductor alloys — used where moving current matters more than mechanical strength.
Best suited to
Line implication: soft material marks easily and needs gentle handling from press exit to packing. Extrusion loads are low, so the constraint is handling and surface protection, not tonnage.
EN AW-6101, an AlMgSi conductor alloy. Lower conductivity than 1050, but with enough tensile strength — a 200 MPa minimum — to self-support as busbar.
Best suited to
Line implication: the temper has to be held consistently across long busbar lengths, so ageing-oven uniformity and repeatable quench are what the specification really tests.
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