Aluminium Ingot
Primary aluminium cast into standard ingot form right after smelting, the base metal shape re-melted by foundries, rolling mills and extruders to make other aluminium products.
Covered in 9 MetalsCost.com News Intelligence articles, most recently on September 18, 2026.
Overview
Aluminium ingot is primary aluminium metal cast into a standard block or bar shape right after it comes out of the smelter — the basic tradeable unit the metal takes before it's processed further into sheet, extrusions, wire or castings. It's essentially unfinished aluminium in its most concentrated, storable form: what a smelter produces, and what a rolling mill, extruder or foundry buys as raw material.
How It's Manufactured
Ingot production is the final step of primary smelting. Alumina is dissolved in molten cryolite and electrolyzed in the Hall-Héroult process, which uses a large amount of electricity to strip oxygen from the aluminium oxide, depositing molten metal at the bottom of the electrolytic cell, or pot. This metal is periodically tapped, alloyed and treated in a holding furnace to adjust composition and remove impurities, then cast into ingots, sows or T-bars on continuous or semi-continuous casting equipment before cooling and stacking for shipment.
Byproducts
Smelting produces spent pot lining, a hazardous waste containing fluoride compounds from the electrolytic cell's carbon lining, which requires specialized treatment or disposal. Dross — an oxide-rich skim that forms on molten metal during casting and traps some usable aluminium — is another byproduct, and it's usually processed further to recover the trapped metal rather than discarded outright. The electrolysis reaction also generates small amounts of perfluorocarbon gases, a greenhouse-gas emission the industry has worked to reduce through tighter process control.
Who Consumes It
Rolling mills buy ingot, typically in slab form, to roll into sheet, coil and foil; extruders buy billet-form ingot to push through dies into profiles; and foundries buy ingot to remelt and cast into shaped parts like engine blocks and wheels. Wire and cable manufacturers are another buyer, remelting ingot into rod for drawing into wire. Essentially, every downstream aluminium product category — rolled, extruded and cast — starts from ingot.
Everyday Uses
Consumers never buy aluminium ingot directly, but it's the starting point for nearly every aluminium object in daily life: it gets remelted and reshaped into beverage cans, cookware, foil, window frames, car parts and appliance housings. Ingot's relevance to daily life is entirely indirect — it's the raw material one processing step removed from the finished goods people actually handle.
Industrial Uses
Beyond remelting for rolling and extrusion, billet-form ingot feeds direct-chill casting operations that produce large-diameter logs for aerospace and heavy engineering parts. Foundry alloy ingots, cast with specific silicon and copper content, are remelted for sand and die casting of automotive components like engine blocks and transmission housings. Ingot's standardized weights and purities also make it the physical form aluminium is quoted and traded in on commodity exchanges like the LME.
Coverage
Vedanta Aluminium Shares Rise as Kotak Neo Sees 31% Upside on a Tighter Global Aluminium Market
Vedanta Aluminium shares gained 1.9% to Rs 411.90 on September 18 as Kotak Neo set a Buy rating with a Rs 540 target, betting delayed Indonesian smelter capacity keeps aluminium markets tight through 2028.
Aluminium Slips From a Two-Month High as Fed Rate-Hike Bets Rise, But China's Destocking Cushions the Fall
Aluminium retreated to about $3,236 a tonne on the LME from a two-month high near $3,360, as growing Fed rate-hike bets strengthened the dollar, even as China's ingot inventory kept falling toward 796,000 tonnes.
Alcoa Says Cutting Canada Tariffs Alone Won't Flatten the US Aluminium Premium
Alcoa's CFO said cutting Canada's 50% aluminium tariff alone won't flatten the elevated $1.09-a-pound US Midwest premium, since the US still needs about a million tons of metal from other countries too.
Vedanta Aluminium Shares Hit a 52-Week Low as Oil Surge Rattles Metal Stocks
Vedanta Aluminium Metal shares dropped more than 3% to a 52-week low of Rs 419.50 on September 11, 2026, as surging Brent crude and rising US bond yields triggered a broad Nifty Metal sell-off.
Aluminium Prices Drift Higher as Exchange Stocks Hit Their Lowest Since 1990
Aluminium prices drifted to a three-week high as LME warehouse stocks hit their lowest level since 1990, with China's peak construction season still ahead.
Vedanta Aluminium Draws 'Buy' Calls as Q1 Profit Triples on BALCO Expansion
Vedanta Aluminium's Q1 FY27 profit surged 205% as its BALCO smelter neared full capacity, drawing Buy ratings from Geojit and Motilal Oswal, even as the stock trades below its June listing price.
Vedanta Pumps Rs 21,000 Crore Into Metals Capacity as India Bets on EV Supply Chains
Vedanta invested over Rs 21,000 crore through FY26 across aluminium, zinc, copper and other metals, and secured 10 critical mineral blocks, as India works to cut its 80%+ import dependency.
Aluminium Stockpiles Hit a Multi-Decade Low as Gulf War Disruption Squeezes Supply
LME aluminium stocks have halved in 2026 to 246,925 tonnes, the lowest in the exchange's 18-year public record, as Gulf war damage to smelters and a Mozambique plant closure squeeze supply.
LME Aluminium Stocks Sink to a 36-Year Low as Iran-Linked Gulf Supply Loss Nears 2 Million Tonnes
LME aluminium stocks have collapsed to a 36-year low of 250,000 tonnes as Gulf production losses near 2 million tonnes annualized, with 95% of remaining metal Russian-origin.
