BlueScope Steel (ASX:BSL): How Is the Port Kembla Blast Furnace Reline Progressing?

Aditi Sarkar

29 October 2026 07:30 PM AEDT

BlueScope Steel (ASX:BSL): How Is the Port Kembla Blast Furnace Reline Progressing?

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Highlights

The No. 6 blast furnace reline forms part of BlueScope’s Port Kembla capital programme.
BlueScope reported FY26 statutory net profit after tax of A$802.0 million.
Group underlying EBIT for FY26 was A$1,273.4 million.
The reline supports continuity of domestic steelmaking, but commissioning remains an operational milestone.

BlueScope Steel (ASX:BSL) manufactures and distributes steel products through businesses in Australia, North America, Asia and New Zealand. At Port Kembla in New South Wales, its No. 6 Blast Furnace reline is part of an industrial investment programme intended to maintain primary ironmaking capacity. The company’s August 2026 annual results identified progress on this project, alongside work on the Port Kembla Plate Mill and investments in other regions. The reline should be described as ongoing work, not a completed operational restart without a corresponding company announcement.

Why the No. 6 furnace matters

The Port Kembla steelworks produces iron for downstream steelmaking and coating operations. BlueScope’s reline of the No. 6 blast furnace is intended to support a transition from the site’s existing No. 5 furnace. A reline involves refurbishment and upgrading of equipment that operates in demanding thermal conditions. Delivery requires engineering, procurement, construction and commissioning activity to fit within broader production plans. For ASX:BSL, the central issue is continuity of iron supply rather than an automatic increase in sales when installation work ends.

Position within the capital programme

BlueScope has described a multi-year investment programme of about A$2 billion covering several assets. Alongside the Port Kembla work, investments include a Western Sydney metal coating line, the North Star debottlenecking project in the United States and an electric arc furnace in New Zealand. Its FY26 results said major projects had progressed through a period of high capital expenditure. Each has different operating outcomes and timelines. The company did not say the No. 6 reline alone accounted for the full group investment programme.

What the FY26 earnings demonstrate

For the year ended 30 June 2026, BlueScope reported statutory net profit after tax of A$802.0 million and underlying EBIT of A$1,273.4 million. Underlying net profit after tax was A$851.2 million. These are consolidated group results covering multiple businesses, not a financial return attributed to the blast furnace project. The company highlighted improved US steel spreads and record sales of certain Australian coated products. ASX:BSL also reported weaker Australian segment earnings amid lower regional steel spreads.

Different regional contributions

BlueScope’s Australian operations generated underlying EBIT of A$188 million for FY26, while North America contributed A$1,034 million and Asia contributed A$177 million. The variation illustrates how the group’s markets can move differently. North American steel spreads were favourable during the year, whereas Australian earnings faced sustained pressure from Asian benchmark pricing. At Port Kembla, the reline investment is aimed at maintaining capability, but near-term segment profitability still depends on prices, input costs, product mix and customer demand.

Engineering and market uncertainties

The company’s project update identifies progress, not final operational acceptance. A major furnace restart requires reliable equipment, coordinated production scheduling and compliant plant operations. Construction spending also competes with other capital requirements, while global steel markets influence operating cash generation. BlueScope said its A$200 million cost and productivity programme was fully delivered by the end of FY26, and identified further FY27 operating-model benefits. ASX:BSL has not represented those group-wide improvements as guaranteed returns from the No. 6 reline.

Key Insights

The Port Kembla reline is a strategic industrial maintenance and capacity-continuity project within BlueScope’s wider capital programme. FY26 results demonstrate substantial group earnings, although performance differed across regions. For ASX:BSL, future disclosures on engineering completion, commissioning, steel dispatches and capital spending will clarify the operational significance of the project. Until an official completion statement is available, estimates about furnace performance should not be treated as achieved results.

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