LME aluminum prices swung wildly in June 2026. After hitting a four-year high of $3,769 per metric ton in early June — driven by the Strait of Hormuz closure and attacks on Gulf smelters — prices dropped sharply to $3,200 by late June. The trigger for the reversal: an interim US-Iran peace framework that raised hopes for reopening the strait and restoring roughly 9% of global aluminum supply that had been cut off since March.
For OEM buyers sourcing aluminum die casting components, this kind of price swing directly hits the bottom line. Aluminum ingot is the single largest cost input in die casting — typically 40–60% of total part cost. A $500/ton swing on LME translates to meaningful per-part cost changes across high-volume programs.
What Happened: The Hormuz Crisis and Gulf Smelter Disruptions
The price spike started in March 2026, when Iran declared the Strait of Hormuz "closed" following US-Israeli military strikes. The strait is a chokepoint for global commodity flows — and it matters for aluminum because two major smelters sit right on it:
Emirates Global Aluminium (EGA) in the UAE, one of the world's largest aluminum producers with over 2.7 million tons of annual capacity. Aluminium Bahrain (ALBA), a top-ten global smelter producing around 1.6 million tons per year. Both facilities were hit by Iranian drone and missile attacks, and their export routes through the strait were blocked. Combined, EGA and ALBA account for roughly 8–9% of global primary aluminum output.
The supply shock drove LME aluminum from around $2,500/ton in late 2025 to over $3,700/ton by early June 2026 — a gain of roughly 50% in six months. LME warehouse stocks fell to around 489,000 tons by February, with 60% of available metal being Russian-origin (effectively unusable for many Western buyers due to sanctions and reputational risk).
The Price Reversal: US-Iran Deal and Supply Outlook
On June 15, 2026, LME aluminum dropped 4.4% in a single session to $3,379/ton after the US and Iran announced a memorandum of understanding to reopen the Strait of Hormuz. By June 24, prices fell further to around $3,200 — a three-month low.
Several factors drove the rapid decline:
Hormuz reopening expectations. The US-Iran framework called for restoring commercial shipping through the strait. If Gulf smelters can resume exports, a significant portion of the supply gap closes.
Rising Chinese output. China — producing about 61% of global aluminum — is running near its self-imposed capacity cap of 45.5 million tons per year. But new capacity in Yunnan and Inner Mongolia has been ramping up, adding incremental supply.
Indonesian smelter expansion. New smelting capacity in Indonesia is coming online, adding another source of supply to global markets and compounding the bearish pressure.
Weak Chinese demand signals. Soft economic data from China — the world's largest aluminum consumer — has dampened demand expectations for the second half of 2026.
LME Aluminum Price Timeline — 2026
| Period | LME Price ($/ton) | Key Event |
|---|---|---|
| Late 2025 | ~$2,500 | Pre-crisis baseline |
| March 4, 2026 | $2,800–$3,100 | Iran declares Hormuz "closed"; EGA/ALBA hit |
| Early June 2026 | $3,675–$3,769 | 4-year high; supply crisis peak |
| June 15, 2026 | $3,379 | US-Iran MOU announced; -4.4% single-day drop |
| June 24–26, 2026 | $3,150–$3,224 | 3-month low; US sanctions waivers on Iranian oil |
What This Means for Aluminum Die Casting Buyers
Aluminum ingot cost is the dominant variable in die casting pricing. When LME moves $500/ton in either direction, it shows up in quotes, escalation clauses, and contract renegotiations. Here is how the current volatility affects procurement decisions:
Short-term cost relief is possible. If the US-Iran deal holds and Gulf smelter exports resume, aluminum prices may stabilize in the $3,000–$3,300 range through late 2026. Buyers who locked in contracts at peak pricing in April–May may have room to renegotiate.
Don't assume a return to pre-crisis levels. Even with Hormuz reopened, several structural factors keep prices elevated: China's production cap, Guinea's bauxite export restrictions, EU CBAM adding carbon costs to imports, and persistently low LME warehouse stocks.
Regional premiums still matter. LME is the base price, but physical aluminum buyers pay regional premiums on top. The US Midwest premium and European duty-paid premium have both surged in 2026. European premiums jumped from under $200/ton over LME in mid-2025 to over $340/ton in early 2026. These premiums can take longer to come down than the LME base price.
Supply chain diversification is now a procurement priority. The Hormuz crisis showed that depending on a single supply corridor is risky. Buyers sourcing aluminum castings from multiple regions — including China, Southeast Asia, and non-Gulf sources — are better positioned to manage both price and delivery risk.
Outlook for the Rest of 2026
Analysts expect LME aluminum to average around $2,945–$3,150/ton for 2026, depending on how quickly Gulf supply recovers. Goldman Sachs has its first-half 2026 outlook at $3,150/ton. The consensus market surplus has been revised down to just 80,000 tons for the year — essentially balanced — with a potential deficit in 2027 if demand growth continues.
The key variables to watch: whether the US-Iran deal gets formalized into a permanent agreement (the current MOU has a 60-day window), how quickly EGA and ALBA can restore full production, and whether Chinese demand picks up in the second half. For die casting procurement teams, this means keeping LME exposure hedged where possible, building pricing flexibility into supplier contracts, and maintaining multiple qualified sources across geographies.
Sources
- Trading Economics — Aluminum Commodity Price Data (Accessed June 27, 2026)
- Discovery Alert — Aluminum Price Slumps on Iran Peace Deal 2026 (June 15, 2026)
- SO OK Trading — Aluminum Surge! June 2026 – Highest in 4 Years (June 1, 2026)
- International Aluminium Journal — Strong Start for Metal Prices in 2026
- CNBC — U.S. Issues Sweeping Iran Oil Sanctions Waivers (June 23, 2026)
- Wikipedia — 2026 Strait of Hormuz Crisis
