AA vs LECO Comparison

Alcoa is a vertically integrated aluminum company whose operations include bauxite mining, alumina refining, and manufacturing primary aluminum. It is one of the world's largest bauxite miners and alumina refiners by production volume, but sits outside the top-10 aluminum producers, a list dominated by Chinese companies. Profits are closely tied to prevailing commodity prices along the aluminum supply chain.Alcoa was the first mass producer of aluminum, launching the world-changing Hall-Heroult smelting process in the 1880s, making aluminum affordable. It listed as a public company in 1925. In 2016, Alcoa spun off its automotive and aerospace metal parts segment to focus on mining, smelting, and refining. It bought the 40% unowned balance of AWAC in mid-2024.

Lincoln Electric is a leading manufacturer of welding, cutting, and brazing products. Its portfolio includes arc-welding solutions, plasma and oxy-fuel cutting systems, brazing and soldering alloys, and automation solutions. Lincoln Electric serves clients across general fabrication, heavy industries, automotive, construction, shipbuilding, energy, and process industries, among others. Based in Cleveland, Lincoln Electric operates in 19 countries and employs 11,000 worldwide. The company generated roughly $4.2 billion in sales in 2025.