Two changes hit secondary aluminium at once, and only one of them is on your cost sheet
Freight repricing moved the delivered cost ranking of scrap origins. A tightened ingot specification moved which of those origins you can actually use.
Most secondary aluminium smelters are treating this as a freight problem. Freight is the visible half. The specification change is the half that decides whether your existing supplier book is still usable, and it does not appear anywhere on a landed-cost calculation.
Taken separately, each is manageable. Taken together they invert the ranking of scrap origins for anyone supplying automotive castings.
The freight half
Route-level container repricing has changed delivered cost in a way that is not uniform across origins. Origins that were marginal on delivered cost have become competitive; origins that were competitive on a long-haul basis have lost their advantage.
Smelters who buy on a standing relationship rather than a delivered-cost comparison have absorbed this quietly and are now paying a premium they have not measured. The fix is mechanical: re-rank your origins on current delivered cost rather than last year's.
The specification half
The revised ingot specification tightens allowable impurity bands for material going into automotive casting. That sounds like a metallurgy problem. It is a procurement problem.
Tighter impurity bands mean mixed and lightly sorted grades that previously blended into an acceptable ingot no longer do so reliably. The smelter has three options, and each has a cost:
- Buy cleaner input. Pre-sorted grades carry a premium that widens precisely when everyone needs them at once.
- Sort harder in-house. Capex and yield loss, and the yield loss is the larger number.
- Blend down and hope. This works until an incoming material audit at the casting customer catches it, at which point the commercial consequence is not the rejected lot but the qualification status.