Nippon Steel

Integrated steelmaking and circular-economy transition

Nippon Steel reports 34.30 million tons of crude steel and 20.42 million tons of by-products for FY2024, with a 99% total by-product recycling rate. Steelmaking slag accounted for 4.41 million tons and was recycled at a 98% rate. The report does not establish an available scrap stream, melt-shop recipe, slag buyer, or customer qualification at a specific plant.

99% FY2024 by-product recycling rate

Open Site, grade and buyer evidence

Screening No commercial claim

As of September 18, 2026

• Ferrous scrap and iron-bearing secondary inputs
• Steelmaking slag and process residuals

Outputs and residuals to resolve

• Steel products meeting grade requirements
• By-product routes requiring site-specific proof

First decision: Furnace route, chemistry limits, volume, yield and buyer-grade requirements.

Nippon Steel says its sustainability report has been integrated into the 2025 integrated report and identifies circular economy as a priority area.

What remains unproven

No public source here identifies a plant-level feedstock mix, residual chemistry, contract volume or downstream acceptance.

Decision boundary

The public record supports one bounded next move: Furnace route, chemistry limits, volume, yield and buyer-grade requirements. It does not establish a buyer, commercial approval or supply agreement.

This is a public screening map. It separates company-disclosed flows from open qualification work. It does not convert a destination into a buyer or an announced ambition into operating capacity.

Works-level scrap qualification

Start at one melt shop with a defined scrap-grade and contamination requirement.

Next evidence: Furnace route, chemistry limits, volume, yield and buyer-grade requirements.

Qualification path

Separate disclosed company activity from a usable commercial lane.

Next evidence: Named site, product grade and technical owner.

Commercial boundary

Do not infer customer demand from corporate reporting.

Next evidence: Buyer specification, commercial terms and approval.

• Integrated Report 2025 Nippon Steel https://www-zam.nipponsteel.com/en/ir/library/pdf/nsc_en_ir_2025_06.pdf
• Sustainability hub Nippon Steel https://www.nipponsteel.com/en/sustainability/
• Sustainability report archive Nippon Steel https://www.nipponsteel.com/en/csr/report/index.html
• Integrated Report 2025 library Nippon Steel, official report library https://www.nipponsteel.com/en/ir/library/annual_report.html
• Integrated Report 2025 complete file Nippon Steel, official integrated report https://www.nipponsteel.com/en/ir/library/pdf/nsc_en_ir_2025_all.pdf

Source hierarchy: filings and company disclosures first. The brief states what those sources support and leaves the unresolved plant, grade, permit, buyer and mass-balance questions explicit.

The next useful working session starts with: Furnace route, chemistry limits, volume, yield and buyer-grade requirements.