Where Does Your Scrap Metal Go? The Recycling Journey

When a scrap metal pickup service drives away with your old water heater, copper pipes, or aluminum siding, the journey has just begun. That material will pass through several hands — a recycling facility, a processing plant, a smelter, and eventually a manufacturer — before it becomes something new. Here's exactly what happens, step by step.

Step 1: Collection and Initial Sorting

Scrap metal enters the recycling stream two ways: through residential and commercial pickups, or via drop-offs at licensed scrap yards. Either way, the first handling stage is initial sorting — separating ferrous metals (iron and steel, attracted to a magnet) from non-ferrous metals (copper, aluminum, brass, stainless steel, and others).

At a Toronto-area scrap yard, incoming loads are weighed on a truck scale and roughly categorized on arrival. Trained staff can visually identify most metals and confirm identity using a magnet, visual colour check, or spark test for steel grades. High-volume operations use handheld X-ray fluorescence (XRF) analyzers to identify alloy composition in seconds.

Step 2: Processing at the Recycling Facility

Once sorted, metals are prepared for transport to a smelter or mill. Preparation depends on metal type:

• Steel and iron: Large pieces like appliances, structural steel, and car bodies go through industrial shredders — machines the size of a house that reduce material to fist-sized fragments in seconds. Shredded steel is then separated from other materials (foam, plastics, wire) using magnetic drums and eddy-current separators.
• Copper: Clean copper (pipe, bar, bare wire) is baled for direct transport to a copper smelter or rod mill. Contaminated copper (insulated wire, circuit boards) may first go through a granulator — a machine that chops wire into fine chips and separates the copper from plastic insulation using air density separation.
• Aluminum: Clean extrusions and cast aluminum are baled or shredded depending on form. Mixed aluminum scrap is often processed through rotary drums that remove paint, coatings, and attachments before smelting.
• Stainless steel: Sorted by grade (304, 316, 430) and baled. Accurate sorting matters — mixing grades dilutes the nickel and chromium content that makes stainless valuable.

Step 3: Smelting by Metal Type

Prepared scrap is now ready for the furnace. Each metal type has a different smelting process optimized for its properties:

Steel (Electric Arc Furnace)

The vast majority of recycled steel goes into Electric Arc Furnaces (EAF). Enormous electrodes drop into a vessel filled with shredded scrap and generate temperatures exceeding 1,600°C through electrical arcs. The entire charge — 200+ tonnes — melts in roughly 90 minutes. Ontario's steel mills in Hamilton and Sault Ste. Marie run EAFs that consume primarily scrap, producing rebar, structural sections, and sheet.

The EAF process uses approximately 70% less energy than primary steel production from iron ore and produces far lower CO2 emissions.

Copper (Anode Furnace)

Clean copper scrap is charged into a reverberatory or anode furnace at around 1,085°C (copper's melting point). Impurities are skimmed off as slag. The molten copper is cast into anodes — large flat plates — and then refined further through electrolytic refining, where an electric current pulls copper atoms from the anode to a cathode plate at 99.99% purity. These copper cathodes are then processed into wire rod, bar, and sheet at downstream manufacturers.

Aluminum (Rotary or Reverberatory Furnace)

Aluminum melts at just 660°C, making it one of the most energy-efficient metals to recycle. Scrap aluminum is charged into rotary tilting furnaces, where flux is added to remove magnesium, silicon, and other contaminants. Molten aluminum is tested for alloy composition, adjusted with alloying additions if needed, and cast into ingots or T-bars for shipment to rolling mills and die casters. Recycled aluminum uses about 5% of the energy required to produce primary aluminum from bauxite ore.

Brass and Bronze

Brass (copper-zinc alloy) and bronze (copper-tin alloy) are melted in induction furnaces that heat metal through electromagnetic induction. Alloy composition is carefully controlled to match specification — brass for plumbing fittings requires different zinc ratios than brass for electrical terminals. These furnaces are smaller and faster than steel EAFs, producing specific alloy heats of a few tonnes rather than hundreds.

Step 4: Refining and Quality Testing

After the initial melt, all metals undergo quality testing before being sold to manufacturers. Spectrometric analysis confirms the chemical composition of each heat. Steel mills adjust carbon content, add alloying elements (chromium for stainless, manganese for high-strength steel), and test mechanical properties. Copper producers confirm conductivity grades meet ASTM and EN standards.

Rejected heats are recharged into the furnace for reprocessing — nothing is wasted.

Step 5: What It Becomes

Recycled metal re-enters manufacturing as standard raw material — indistinguishable from virgin metal. Here's where Toronto's scrap metal typically ends up:

Environmental Impact: Why Recycling Matters

Scrap metal recycling delivers measurable environmental benefits at every step of the chain:

• Steel: EAF recycling uses ~70% less energy and produces ~58% less CO2 than blast furnace primary production from iron ore.
• Aluminum: Recycling uses ~95% less energy than primary smelting from bauxite. A recycled aluminum can is back on a shelf within 60 days of collection.
• Copper: Recycling uses ~85% less energy than primary copper mining and smelting, which involves open-pit mining, crushing, and multi-stage chemical processing.

Canada diverts approximately 16 million tonnes of scrap metal from landfill annually. Ontario's manufacturing corridor — Hamilton, Sault Ste. Marie, Oshawa — is a major consumer of recycled metal, meaning much of the scrap collected in the GTA is processed domestically rather than shipped overseas.

What Happens to Metal from Scrap Metal Men Pickups

When we collect scrap from your home or business, material goes to licensed Ontario processors. Ferrous metal (steel appliances, water heaters, iron radiators) goes to local shredders and ultimately to Ontario steel mills. Non-ferrous metals (copper, brass, aluminum) go to specialty recyclers whose downstream customers include manufacturers across North America.

We provide recycling certificates for commercial customers on request — documentation that your scrap was diverted from landfill and processed through certified facilities.

Frequently Asked Questions

Is recycled metal as strong as new metal?

Yes. Properly refined recycled metal is metallurgically identical to primary metal. Steel, copper, and aluminum can all be recycled indefinitely without any loss of strength or quality. The recycled content of a product has no bearing on its performance.

How long does the full process take?

From collection at your door to finished ingot at a mill: typically 4–8 weeks, depending on transport schedules, processing backlog, and downstream demand. Aluminum is often the fastest — it can go from scrap to new ingot in under two weeks.

What percentage of scrap metal actually gets recycled vs. landfilled?

Metals have among the highest recycling rates of any material. In Canada, steel recovery rates exceed 85%, aluminum 75%, and copper over 90% of collected material. Contamination or mixed loads that can't be economically separated make up most of what isn't recovered.

Does mixing metals affect recycling quality?

Significantly. Mixed metals often get processed as the lowest-grade fraction in the blend, losing the premium value of higher-grade material. This is why scrap yards pay more for sorted, clean loads — and why sorting before drop-off or pickup maximizes the material's downstream quality and your payment.

What about metals that can't be recycled?

Very few metals are genuinely unrecyclable. The exceptions are heavily contaminated or radioactive materials, and certain specialty alloys where separation is uneconomical. Standard household and construction metals — steel, copper, aluminum, brass, stainless — are all fully recyclable through established processes.