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Chapter 12 — Wastes from shaping and surface treatment of metals and plastics Non-Hazardous

EWC Code

12 01

Wastes from shaping and physical and mechanical surface treatment of metals and plastics

EUR-Lex Commission Decision 2000/532/EC — Official Journal L 226, 06/09/2000

Annual Volume

~25 Mt/year EU machining and forming swarf

Valorisation Range

€80–400/tonne (clean dry swarf premium)

Primary Route

Steel Swarf to EAF — Briquetted

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Waste Classification

EWC 12 01 covers solid and liquid wastes generated during metalworking operations including turning, milling, grinding, drilling, honing and lapping. The primary solid wastes are metal swarf (fine chips and turnings), grinding sludge (metal particles mixed with coolant and grinding wheel abrasive), and filter residues from metalworking fluid treatment systems. These streams contain embedded metalworking fluid (MWF) — typically 5–15% by mass — that classifies many sub-codes as hazardous.

Metal swarf composition reflects the feedstock alloy: steel machining generates 12 01 01 (ferrous, non-hazardous) while swarf contaminated with MWF becomes 12 01 09* or 12 01 11* (hazardous). Aluminium swarf (12 01 03) and titanium swarf (classified under 12 01 03 or specific REACH exemptions) carry significant value — aluminium alloy AA2024 and AA7075 swarf reaches €0.50–1.20/kg in clean dry form and is segregated for secondary smelting rather than mixed with low-grade scrap.

Grinding sludge (12 01 17) from centreless grinding and surface grinding is the most challenging stream: fine particle size (D50 < 20 µm), high oil content (15–30%), and mixed metals make direct recycling difficult. Centrifugation removes 80–90% of MWF before briquetting; the centrifuged swarf briquette achieves 85–90% density and is accepted by steel and aluminium scrap processors.

Typical Generators

Automotive component manufacturers — engine blocks, transmission housings
Aerospace precision machining — titanium and aluminium alloy turnings
General engineering workshops — CNC turning and milling operations

Disposal & Valorisation Routes

Established valorisation pathways for EWC 12 01, ranked by economic value and market depth. Steel Swarf to EAF — Briquetted is the primary route.

Steel Swarf to EAF — Briquetted

Primary

Clean ferrous turnings (12 01 01) centrifuged to <2% oil content, briquetted at 200–400 bar into dense cylinders, charged directly to EAF as substitute scrap (NACE 24.10). Briquette density 5–6 t/m³ vs. loose swarf 0.5–1.0 t/m³. Premium over loose scrap: €20–40/t for oil-free briquette grade.

Aluminium Swarf Segregation and Smelting

Primary

Alloy-segregated aluminium turnings (AA2024, AA6061) centrifuged and sold at alloy-specific premiums to secondary Al smelters (NACE 24.42). Mixed alloy aluminium swarf downgraded to De-ox grade (€0.20–0.40/kg). Alloy segregation at point of generation captures €0.30–0.60/kg additional margin.

Metalworking Fluid Reclaim

Secondary

Centrifuge or vacuum filtration recovers MWF (cutting oil, emulsion) from swarf for reuse or treatment. Recovered coolant reprocessed at fluid management companies; oil content ≥60% sent for fuel oil blending (NACE 19.20). Reduces hazardous waste classification of swarf and lowers disposal costs.

These are the established routes for EWC 12 01. Which one your stream qualifies for depends on its composition, volume and region.

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NACE Receiving Industries

Primary & secondary off-takers

01
Treatment and coating of metals

Metal finishing shops generating swarf from precision machining; also receive treated swarf for proprietary briquetting before onward sale

02
Manufacture of basic iron and steel

EAF mini-mills accepting briquetted or clean ferrous swarf as charge material

03
Aluminium production

Secondary Al smelters processing alloy-segregated aluminium turnings and borings

04
Treatment and disposal of non-hazardous waste

Swarf treatment: centrifugation, briquetting, fluid separation before onward recycling

Source: NACE Rev.2 — Eurostat, 2008

Regulatory Context

Key legislative frameworks governing EWC 12 01 classification, transport, and treatment.

Hazardous Classification — Oil Content Threshold

Metal swarf containing metalworking fluid at >0.5% mineral oil by mass may trigger hazardous classification (H3 flammable, H5 harmful) under Regulation 1357/2014. Centrifugation to ≤0.5% oil is the standard industry approach to maintain non-hazardous classification and avoid licensed disposal costs.

Biocide and Coolant Composition

Metalworking fluids contain biocides (formaldehyde-releasers, phenol derivatives) regulated under Biocidal Products Regulation 528/2012. Employer duty to minimise MWF exposure under EH40 (UK) or OEL Directive 2000/39/EC. Swarf management plans must account for biocide carryover in recovered fluid.

Surface Treatment of Metals BREF

BAT Reference document for Surface Treatment of Metals and Plastics (2006, revision ongoing). BAT conclusions on metalworking fluid management, swarf treatment, and contaminated waste minimisation. Central reference for permit applications at integrated machining facilities.

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Industries That Use This Waste

Sectors that valorise EWC 12 01 as an input material or secondary raw material.

Explore EU waste flows — Waste Atlas

Visualise 17 years of E-PRTR industrial facility data. See how EWC 12 01 and related waste streams flow across European industries and sectors.

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Source: EUR-Lex Commission Decision 2000/532/EC · NACE Rev.2 — Eurostat 2008

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