The aluminium beverage cans linger to be one of the strongest proofs that the aluminium industry’s circularity is attainable at scale. Not in theory, but in practice. A recent white paper presented by Innoval at COP30 shows that the evidence lies purely in metallurgy, process control and measurable emissions outcomes.
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An Innoval spokesperson has said, “Can-to-can recycling is not only a technical success but a critical climate solution. By optimising metallurgy and processing, we can unlock real environmental benefits while maintaining quality.”
Cans are not made from generic aluminium. They rely on two engineered alloys. One where the can’s body stock uses AA3104 and the other wherein the can’s end stock uses AA5182. Both operate within narrow chemical windows. Silicon (important in controlling the intermetallic particles), iron (forms intermetallics that can increase earing and harm drawability), copper (contributes to strength and reduces strength drop off observed during lacquer curing of the can), magnesium (used in 5xxx end stock) and manganese (used in 3xxx series) must be tightly controlled to ensure that the quality for strength, formability, corrosion resistance, and deep-draw performance.
When chemistry is correct, performance follows. And when it is preserved through recycling, circularity works competently.
Global recycling scenario
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