LME zinc is trading around $3,472 per metric ton as of late June 2026 — up roughly 25% year-on-year. But the headline price only tells part of the story. What matters more for zinc die casting buyers is what is happening underneath: LME warehouse stocks have collapsed to levels that cover less than one day of global consumption, while China — the world's largest zinc producer — is sitting on rising stockpiles that cannot easily reach Western markets.
This East-West imbalance is creating a two-speed zinc market. Buyers in Europe and North America face tight physical supply and elevated regional premiums. Buyers sourcing from Chinese suppliers see a different cost picture. For OEM procurement teams managing zinc die casting programs, understanding this split is now essential for accurate cost planning.
LME Zinc Stocks Have Essentially Run Dry
LME registered zinc stocks fell from 230,000 metric tons at the start of 2025 to under 35,000 tons by late October — an 85% drop in ten months. By early 2026, available tonnage (excluding metal already queued for delivery) stood at roughly 30,000 tons. For context, global zinc consumption runs at about 37,000 tons per day. That means LME stocks covered less than a single day of demand.
The drawdown was driven by outflows from Singapore warehouses, which had held the bulk of LME inventory for the past two years. Over 240,000 tons were shipped out of Singapore in the first eight months of 2025, headed to Europe, the US, and other Asian destinations. Imports into Singapore dropped to near zero, suggesting off-market storage was also exhausted.
LME cash-to-three-month spreads flared to over $60/ton in backwardation — the widest since 2022. That kind of spread signals genuine physical shortage in the Western supply chain.
Meanwhile, China Is Stacking Up Zinc
While LME stocks drained, Shanghai Futures Exchange (SHFE) zinc inventory moved in the opposite direction — climbing to over 100,000 tons by late 2025, up 70,000 tons since the start of the year. China produced roughly 61% of global refined zinc in 2025 and has been running close to self-sufficiency.
The pricing gap between Shanghai and London widened to over $330/ton — a level last seen in 2022–2023, when China briefly became a net exporter of refined zinc. Analysts at BNP Paribas noted that the arbitrage window needed to open slightly further to make exports profitable, but the direction was clear. If exports materialize, they could help rebalance Western inventories. If they don't, LME tightness persists.
What Caused the Supply Squeeze
Global mined zinc production actually grew 6.3% year-on-year in the first half of 2025. The problem was downstream: refined zinc output fell 2.1% over the same period. Several factors drove this divergence:
Smelter closures and cuts. The Toho Zinc Annaka plant in Japan shut down permanently. European smelters reduced output due to high energy costs. Treatment charges (the fee paid by smelters to process concentrate) turned negative in late 2024, squeezing smelter margins to the point where some operations were unprofitable.
Mine disruptions. Ireland's Tara mine — once Europe's largest zinc mine — shut down. Red Dog in Alaska, the world's largest zinc mine, reported declining ore grades. Smelter feed was available, but not at the right price or in the right location.
Speculative drawdowns. Traders pulled zinc from LME warehouses to store off-market, betting on higher future prices. This reduced visible inventory faster than physical demand warranted.
New Supply Is Coming — But Slowly
Several mine restarts and expansions are scheduled through 2026–2027 that should ease concentrate tightness:
| Project | Location | Status |
|---|---|---|
| Bunker Hill | Idaho, USA | Commissioned early 2026 |
| Aljustrel (Almina) | Portugal | Restarted late 2025 |
| Gamsberg expansion | South Africa | Ramping up mid-2026 |
| Rosh Pinah 2.0 | Namibia | Expanding mid-2026 |
| Huoshaoyun | Xinjiang, China | Commercial production started |
| Tala Hamza | Algeria | Scheduled for 2026 |
The ILZSG (International Lead and Zinc Study Group) projects a global zinc surplus of 271,000 tons in 2026 as these new sources come online and refined output recovers. But surpluses are only useful if the metal is where buyers need it. Right now, that is not the case.
Impact on Zinc Die Casting Costs
Zinc alloy ingot (Zamak 3, Zamak 5) is the primary raw material cost in zinc die casting — typically 50–70% of total part cost. When LME zinc moves $500/ton, the per-kilogram alloy cost shifts by roughly $0.50. On a 200-gram Zamak part produced in volumes of 100,000 units, that is a $10,000 cost swing on material alone.
Several cost factors are hitting zinc die casting buyers in 2026:
Elevated LME base price. At $3,472/ton, zinc is well above the $2,500–$2,800 range that prevailed through most of 2024. Forecasts from Goldman Sachs, Citi, and Macquarie suggest $3,200–$3,600/ton as the likely range for the rest of 2026, with upside risk if LME stocks fall further.
Regional premiums are up sharply. US premiums have surged to $400–$460/ton over LME. European premiums sit at $220–$260. Southeast Asian premiums are $110–$140. These are added on top of the LME base price for physical delivery.
Section 232 risk for US buyers. The US imports roughly 75% of its refined zinc — the highest import reliance of any base metal. A Section 232 investigation into critical minerals was launched in early 2025. If tariffs are imposed on zinc imports (as they were on aluminum and steel), US zinc costs could spike further.
China's die-casting zinc alloy market shows mixed signals. Operating rates in China's die-casting zinc alloy sector ran around 51% in mid-June 2026. China's zinc alloy exports hit a decade high in 2025 (7,259 tons, up 36.7% YoY), partly driven by pre-tariff front-loading. Whether this export momentum continues depends on the US-China tariff suspension window, which runs through November 2026.
What Buyers Should Watch
For OEM buyers sourcing zinc die cast parts, the key variables for the rest of 2026 are: whether Chinese zinc exports to LME warehouses materialize to rebalance Western stocks; the outcome of the US Section 232 critical minerals investigation; the ramp-up speed of new mine capacity (Bunker Hill, Gamsberg, Rosh Pinah); and whether the US-China tariff suspension holds past November 2026.
In practical terms, this means building LME-linked pricing clauses into supplier contracts, qualifying multiple zinc alloy sources across regions, and monitoring LME warehouse stock reports weekly — because in a market where one day of inventory can vanish overnight, pricing can shift just as fast.
Sources
- LME — LME Zinc Official Prices (Accessed June 27, 2026)
- Trading Economics — Zinc Commodity Price and Market Data (Accessed June 27, 2026)
- Reuters via MINING.COM — Depleted LME Zinc Stocks May Need a Chinese Booster
- Fastmarkets — Monthly Base Metals Market Update 2026
- StoneX — Zinc's Global Price Trend Is Being Challenged by Regional Parameters
- SMM — 2026 Die-Casting Zinc Alloy: Steady Demand with Underlying Concerns
- Investing News — Zinc Market: H1 2025 Sees Price Swings
