Mitsui and Itochu Australian iron ore investment strengthens Asian steel supply chains

Australian Iron Ore

The Mitsui and Itochu Australian iron ore investment strengthens long term raw material security for Asian steelmakers. The two Japanese trading houses will acquire a combined 15% stake in the Ministers North iron ore projects from BHP in Western Australia. As a result, they will secure offtake rights from an expected 20mn t/yr operation, pending a final investment decision by June 2026.

This Mitsui and Itochu Australian iron ore investment also deepens long standing partnerships with BHP in the Pilbara. Itochu will hold an 8% stake and targets 1.6mn t/yr of iron ore, mainly for Chinese customers. Mitsui will take a 7% stake and aims to offtake about 1.4mn t/yr, supplying Japan and other Asian markets. Therefore, each firm will align offtake volumes with its equity share, reinforcing stable contractual flows rather than spot exposure.

Ministers North steps in as Yandi successor

The Ministers North project will effectively replace the aging Yandi mine jointly operated by BHP, Mitsui and Itochu. Yandi is scheduled for a gradual production decline and eventual closure, although the final shutdown date remains undisclosed. Therefore, Ministers North functions as a crucial continuity asset, preserving existing rail, port and blending synergies in Western Australia.

Project timing remains tied to a final investment decision scheduled by June 2026. Commercial operations could then ramp up to the envisaged 20mn t/yr run rate. However, the consortium must still navigate cost inflation, permitting timelines and infrastructure coordination with other Pilbara projects. If delivered on schedule, Ministers North will smooth the transition from Yandi without a major gap in supply.

Broader Pilbara strategy behind Mitsui and Itochu Australian iron ore investment

The Mitsui and Itochu Australian iron ore investment also sits within a wider Pilbara growth strategy. Mitsui separately announced a $5.3bn commitment in February to acquire a 40% share in the Rhodes Ridge joint venture. The company aims to start commercial operations there by around 2030, although the final investment decision schedule is still under review.

Together, Ministers North and Rhodes Ridge will anchor Mitsui’s long term iron ore portfolio in Western Australia. Meanwhile, Itochu’s additional stake in Ministers North underpins its iron ore flows to China during a period of changing demand patterns. As a result, the Mitsui and Itochu Australian iron ore investment reinforces Japan’s broader goal of diversified, low risk iron ore sourcing across key Asian markets.

The Metalnomist Commentary

This deal shows how Japanese trading houses quietly rebuild long term security in iron ore rather than chase short term price cycles. By backing Ministers North as Yandi’s successor and supporting Rhodes Ridge, Mitsui and Itochu lock in future Pilbara options while steel demand in Asia matures. Market participants should watch how offtake contracts and quality specifications evolve, especially for blends tailored to China and Japan’s decarbonising steel sectors.