An Analysis of CECA Standards for the Classification of Ferrous Scrap: A Reference System for Quality, Traceability, and Sustainability in Steel Recycling in Europe

by Marco Arezio

The management of ferrous scrap is a crucial aspect of the steel industry, contributing significantly to both environmental sustainability and economic efficiency in the production cycle.

The European Coal and Steel Community (CECA) established a set of standards for the classification of ferrous scrap to ensure the quality and traceability of recycled materials destined for steel mills.

This article provides an in-depth look at CECA standards, illustrating their importance and usage in facilitating the trade and processing of ferrous scrap in Europe.

CECA's classification of scrap not only ensures the quality of the final product but also serves as an essential tool for promoting circular economy practices.

What is CECA?

The European Coal and Steel Community (CECA) was the first supranational organization established in Europe after World War II, with the aim of coordinating and regulating coal and steel production among member states.

Its role was crucial in promoting economic integration, as well as in developing common standards for trade and resource management of strategic materials like iron and steel.

Although CECA was formally absorbed by the European Union in 2002, its specifications remain a valuable reference for the recycling and production of metals.

Why Classify Ferrous Metals?

Classifying ferrous metals according to CECA specifications helps ensure that the scrap collected and reused in industrial processes meets the quality requirements necessary for use in steel mills.

Separating metals into different categories is essential to avoid issues during melting and to ensure that the final product has the desired characteristics.

For instance, the absence of alloy elements or non-ferrous materials is essential to prevent contamination that could compromise steel quality.

Additionally, each category meets specific industrial needs: some types of scrap are ideal for structural steel production, while others are suited for less critical components.

Ferrous Scrap Categories: A Detailed Overview

CECA specifications provide a range of standard categories for ferrous scrap, each corresponding to specific requirements related to the material's composition and size.

This classification facilitates the trade and use of these materials by establishing standards accepted by suppliers and buyers worldwide.

Below are some of the main categories:

Category 01: Long Scrap

Category 01 includes scrap from demolition of metallic elements thicker than 9 mm, such as profiles and sheets. This type of scrap must be free of large cross sections and should not be excessively oxidized.

This scrap is ideal for production requiring high material density and low impurity levels. Typical sources include the demolition of buildings and large metal structures.

Category 02: New Offcuts

This category includes residues from industrial production, often from sheet metal work or cutting processes. Elements must have a minimum thickness of 5 mm and be free of coatings or non-ferrous materials.

Being new offcuts, this scrap type is highly valued for its purity and lack of oxidation, making it perfect for direct use in melting processes.

Categories 03 and 04: Selected Collected Scrap

These categories include scrap collected from diverse sources, often from civil or industrial demolitions, with minimum thicknesses of 6 mm and 3 mm, respectively. Selection is essential to ensure the absence of non-ferrous materials, alloy steels, and excessive oxidation. These scraps are frequently used in steel mills for non-critical productions.

Categories 05 - 08: Short Scrap

Categories 05 to 08 are shorter versions of the previous categories (01-04). The maximum length is 60 cm, though it can be reduced to 50 cm upon request by some plants.

This scrap is particularly useful when manageable materials are needed during melting and transport phases.

Categories 09 and 50: New Light Scrap

Category 09 concerns new light scrap, uncoated and with a maximum length of 40 cm. Category 50 refers to loose, new light scraps, often hydraulically compressed into bales.

These materials are appreciated for their ease of handling and melting, but they must be free of any magnetic materials that could interfere with processing.

Categories 52 - 55: Scrap Bales

Categories 52 to 55 pertain to compressed scrap bales. Category 52 includes bales of new, light offcuts, while Categories 54 and 55 refer to bales of light, uncoated black scrap and recovered light black scrap, respectively, specifically intended for steel mills.

These bales offer an efficient solution for transporting large quantities of scrap, reducing logistical costs and optimizing space.

Categories 40 - 42 and 45: Turnings

Turnings are among the most common categories of ferrous scrap. Category 40 includes short, crushed steel turnings, ideal for melting without further processing. Category 41 covers longer turnings, which are not always easy to handle, while Category 42 is specific to cast iron turnings.

Category 45 includes steel turnings from automatic machines, often characterized by uniform dimensions. Turnings are highly valued by steel mills for their high specific surface area, facilitating melting processes.

Category 14: Railway Scrap

Category 14 pertains to scrap from railways, such as rails, axles, bumpers, and rims. These materials must be cut to maximum dimensions of 1.50 × 0.50 × 0.50 m, with uncut wheels not exceeding a diameter of 1.10 m. Railway scrap is highly valued for its high strength and purity, often used to create new structural elements.

Category 15: Ship Demolition Scrap

Scrap from ship demolition constitutes Category 15. This scrap type features large dimensions and robust composition, typically used in shipbuilding and maritime construction. It must be free of encrustations and excessive oxidation and is valued for its high density and structural strength.

Category 33: Shredded Scrap

Shredded scrap, Category 33, includes clean, slag-free scraps crushed into pieces with a maximum size of 15 cm.

Specifications include a minimum density of 1,100 kg/m3 for Category 33A and 900 kg/m3 for Category 33B, with a minimum metal content of 92%. Strict control over the levels of tin, copper, sulfur, and phosphorus ensures material quality.

Category 53: Deep-Drawn Bale Scrap

Category 53 covers deep-drawn bale scrap, including new clippings from deep-drawing processes. These scraps are characterized by high ductility and are particularly suited for re-melting in steel mills requiring high plastic properties in steel.

How to Use CECA Classification

Understanding and using CECA classification is essential for anyone working in the ferrous scrap management sector, from collection to production.

Classification helps ensure that each scrap batch has the necessary characteristics for efficient use in melting processes, minimizing waste, and increasing production efficiency.

Furthermore, it establishes a common language between suppliers and buyers, facilitating cross-border scrap trade and helping improve material traceability.

CECA’s classification represents not only a technical guide but also an important communication tool in the global ferrous scrap market.

Through precise categorization, it is possible to ensure that recycled materials meet the needs of steel mills, reducing the risk of issues during melting processes and ensuring the quality of the final product.

Conclusion

The classification of ferrous scrap according to CECA standards provides a clear framework for understanding the characteristics of recycled materials and their uses.

Adhering to these standards is essential to ensure the quality of the produced steel and to promote circular economy practices in the steel industry.

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