A joint venture with the former Nissho Iwai Corporation (now: Sojitz Corporation) that manufactures, processes, distributes and sells steel products.

A wholly-owned Australian subsidiary of the Mitsubishi Corporation established in 1968. The company has taken a stake in approximately ten coal mines together with major natural resource companies and produces approximately 28 million tons of coal a year, ranking among the top five producers in Australia.

Mitsubishi Corporation Unimetals Ltd. handles a wide range of non-ferrous metals-related materials and products on a global scale. Operations extend from non-ferrous metal resources such as copper and aluminium to non-ferrous metal products, including aluminium products. The company conducts those businesses through its overseas offices and subsidiaries.
On April 1, 2010, Mitsubishi Shoji Light Metal Sales Corporation has merged with Mitsubishi Corporation Unimetals Ltd.

A manufacturer of secondary aluminum alloy ingots in which Nippon Light Metal Co., Ltd. contributed 55% of its initial capital along with 45% from MC. The company aims to contribute to global environmental conservation through natural resources and energy saving that is achieved through aluminum recycling, an activity of growing importance in efforts to build a recycling-based society.

Invests in aluminum smelting businesses and sells aluminum ingots.

Established in 1971, Triland Metals Limited is a wholly-owned subsidiary of Mitsubishi Corporation. It is based in London, the central market for non-ferrous metal futures trading. The company is Japan's only one ring member (official member) of the London Metals Exchange (LME) and is carrying out brokering and trading activities to satisfy the needs of the industrial world.