Southeast Asia Aluminium Premiums Could Decouple From Japan on Chinese Semi Flows

Aluminium

Southeast Asia aluminium premiums could begin to decouple from Japan as Vietnamese buyers increasingly accept Chinese-origin semi-finished products for remelting. The shift suggests regional aluminium pricing may become more dependent on origin acceptance than on traditional Asian premium benchmarks.

Southeast Asia aluminium premiums are still supported for Western-origin and free-trade-agreement cargoes, with some deals above $300/t on a cif Thailand and Vietnam basis. However, cheaper Chinese semi-finished products are creating a parallel supply route.

Southeast Asia aluminium premiums may therefore face a different pricing path from Japan, where origin requirements and customer preferences can be more restrictive. Vietnam’s willingness to buy and remelt Chinese-origin material is changing the regional supply equation.

The key issue is whether low-priced Chinese semi exports remain available. If they do, southeast Asian buyers may have less reason to pay Japan-linked premiums for standard P1020 supply.

Chinese Semi-Finished Products Create a Remelting Alternative

Chinese semi-finished aluminium products are attracting stronger interest from Vietnamese and Korean buyers. Traders pointed to low-priced offers for products such as aluminium wires under HS code 76149000.

Offers for high-purity aluminium stranded wires were reported at between an $80/t discount and a $100/t premium to London Metal Exchange prices. That is below the more typical $50-100/t premium range seen in recent months.

The economics become competitive after remelting. With remelting costs estimated at $150-200/t, buyers can effectively convert wire into P1020-equivalent ingot at a total premium of about $200-300/t.

That is competitive against direct P1020 purchases, especially when standard ingot premiums remain elevated. For price-sensitive buyers, remelting offers a practical way to secure metal units while avoiding higher conventional premiums.

This does not mean all customers will accept the route. Some buyers still require Western-origin or free-trade-agreement cargoes because of compliance, quality, customer specification or trade-policy considerations.

But the presence of a cheaper remelting route can weaken the connection between southeast Asia and Japan premiums. If Vietnam accepts material that Japan will not, the two markets may price differently.

Export Rebates Could Decide Sustainability

China’s 13% export tax rebate for certain aluminium products is central to the pricing gap. Some Chinese suppliers can offer semi-finished products at very low premiums, or even discounts to LME, because the rebate supports export economics.

This creates a policy-driven arbitrage. Instead of exporting primary aluminium directly, suppliers can export semi-finished products that receive more favourable tax treatment.

The sustainability of the trend depends on Beijing’s response. If Chinese authorities decide export volumes are excessive or distortive, they could remove or adjust the rebate.

That would quickly change the economics. Without the rebate, low-priced Chinese semis may become less competitive as a remelting feedstock for southeast Asian buyers.

For now, the trade flow matters because western aluminium supply remains tight and regional premiums are elevated. Buyers are looking for workable alternatives, and Chinese semis provide one.

The broader market implication is clear. Aluminium premiums are becoming more segmented by origin, trade rules and customer acceptance. Regional benchmarks may no longer move together if buyers have different views on acceptable supply.

The Metalnomist Commentary

The possible split between southeast Asia and Japan premiums shows how trade policy can reshape aluminium pricing as much as physical supply. If Chinese semi exports remain cheap, Vietnam could become a more flexible remelting market while Japan stays tied to stricter origin premiums.