Aluminum's journey from rarity to ubiquity involved five pivotal developments.
First, its initial scarcity: In the 19th century, aluminum was more valuable than gold due to extraction challenges; Napoleon III used aluminum cutlery for honored guests.
Second, the Hall-Héroult process (1886) revolutionized production, replacing costly chemical methods with electrolysis, slashing prices from 1,200/kgto1,200/kgto2/kg by 1900.
Third, wartime demand: WWI and WWII prioritized aluminum for aircraft (e.g., 98% of WWII fighter planes used aluminum), driving industrial scaling. Fourth, post-war commercialization: Post-1945, surplus production shifted to consumer goods like cookware, soda cans (first sold in 1958), and foil. Fifth, globalization: China's smelting boom (60% of global output by 2020) and recycling infrastructure made aluminum affordable worldwide. Today, its price (~$2,500/ton) reflects its transition from luxury to essential commodity, enabled by metallurgical breakthroughs and mass production.
