# Nippon Steel

> Nippon Steel identifies creation of a circular economy as a priority issue. The usable Material Transition lane is scrap and steelmaking residuals at a named works, not a generic green-steel narrative.

- Industry: Metals & Mining
- Collection: Active
- Materials: Steel
- Processes: Recycling
- Evidence through: 2026-09-18
- Canonical URL: https://www.materialtransition.com/library/nippon-steel

## Material inputs to resolve

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.

## What is disclosed

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.

## Material flow map

| Material or stream | Qualification gate | Process or destination | Evidence still needed |
|-|-|-|-|
| Ferrous scrap and iron-bearing secondary inputs | Composition and specification | Steel products meeting grade requirements | Site, volume and buyer evidence |
| Steelmaking slag and process residuals | Condition and logistics | By-product routes requiring site-specific proof | Yield and destination evidence |

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.

## Three defensible entry lanes

#### 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.

## Evidence register

- **Integrated Report 2025** Nippon Steel https://www-zam.nipponsteel.com/en/ir/library/pdf/nsc\_en\_ir\_2025\_06.pdf [1]
- **Sustainability hub** Nippon Steel https://www.nipponsteel.com/en/sustainability/ [2]
- **Sustainability report archive** Nippon Steel https://www.nipponsteel.com/en/csr/report/index.html [3]
- **Integrated Report 2025 library** Nippon Steel, official report library https://www.nipponsteel.com/en/ir/library/annual\_report.html [4]
- **Integrated Report 2025 complete file** Nippon Steel, official integrated report https://www.nipponsteel.com/en/ir/library/pdf/nsc\_en\_ir\_2025\_all.pdf [5]

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.

## Material Transition editorial interpretation

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

## Sources

- [1] Integrated Report 2025 - https://www-zam.nipponsteel.com/en/ir/library/pdf/nsc_en_ir_2025_06.pdf
- [2] Sustainability hub - https://www.nipponsteel.com/en/sustainability/
- [3] Sustainability report archive - https://www.nipponsteel.com/en/csr/report/index.html
- [4] Integrated Report 2025 library - https://www.nipponsteel.com/en/ir/library/annual_report.html
- [5] Integrated Report 2025 complete file - https://www.nipponsteel.com/en/ir/library/pdf/nsc_en_ir_2025_all.pdf

From the Material Transition company brief library: https://www.materialtransition.com/library/nippon-steel