# Product passports for steel and aluminium across the value chain

> Prepare identifiers, origin, composition, carbon and recycling data for metals and semi-finished products.

- Category: Materials
- Last reviewed: 17 August 2026
- Canonical HTML version: https://dppready.de/en/knowledge/product-passport-steel-aluminium

Steel and aluminium data often move through several processing stages. A passport concept must preserve origin and calculation context while allowing downstream updates.

## In brief

- Define the level represented by each identifier.
- Keep calculation method, boundary and evidence with every value.
- Pass structured data through the value chain.

## Identify material and batch

Distinguish grade, specification, heat, batch, coil, billet or other commercial units and map transformations between them.


## Manage environmental data

Store composition, recycled content, origin, energy and carbon values together with methodology, scope, date and supporting evidence.


## Enable downstream use

Provide interoperable exports and controlled access so processors can inherit trusted values and add their own transformation data.


## Frequently asked questions

### Is one carbon value enough?

No. A value needs methodology, system boundary, period, source and the product quantity it represents.

### Do steel and aluminium have final universal DPP fields?

Detailed obligations depend on the product-specific measures and applicable sector rules.

## Official sources

- [ESPR Working Plan 2025–2030](https://eur-lex.europa.eu/legal-content/DE/TXT/?uri=CELEX:52025DC0187)
- [EU Regulation 2024/1781 (ESPR)](https://eur-lex.europa.eu/eli/reg/2024/1781/oj)

This content is general information and does not constitute legal advice or a compliance guarantee.