Aluminum prices rise across Japan, South Korea and Thailand; spot premiums diverge and move higher【SMM Analysis】

Published: Jun 12, 2026 17:45

1. Thailand & South Korea Markets: Prices climb steadily, bolstered by upbeat expectations for long-term contract premiums

CIF quotations and transaction prices of aluminum ingots in Thailand and South Korea moved higher overall this week. The backwardation of LME spot aluminum against the three-month contract narrowed notably. Market optimism over higher Q3 QMJP long-term contract prices continued to build. Sellers lifted spot quotes amid rising costs, pushing transaction prices up accordingly during the week.

End-product manufacturers in Southeast Asia and South Korea have extensively adopted Chinese exported aluminum products as raw material substitutes, curbing import demand for primary aluminum ingots. Most downstream players only conduct sporadic restocking based on immediate needs, with little willingness for large-scale inventory buildup. The market has therefore seen a trend of strong prices amid sluggish trading activity.

2. Japan Market: Tight spot supply drives sharp premium hikes; buyers become more price-tolerant

Japan’s MJP spot premiums kept climbing this week, mainly driven by acute domestic spot shortages. The Middle East, Japan’s major source of imported aluminum ingots, has delivered lower shipments year-on-year due to geopolitical tensions, shipping disruptions and constrained delivery schedules. No other producing regions can make up the supply gap on a meaningful scale, keeping domestic tradable spot inventories at persistently low levels.

Faced with tight supply, Japanese end-users have softened their price stance and grown more receptive to spot cargoes with steep premiums. Meanwhile, bullish expectations for Q3 long-term contract premiums have spilled over to the spot market. The combined factors have pushed Japan’s spot premiums to sharply elevated levels.

Data Source Statement: Except for publicly available information, all other data are processed by SMM based on publicly available information, market communication, and relying on SMM's internal database model. They are for reference only and do not constitute decision-making recommendations.

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Aluminum prices rise across Japan, South Korea and Thailand; spot premiums diverge and move higher【SMM Analysis】 - Shanghai Metals Market (SMM)