Copper vs Aluminium — Why Is the Scrap Price So Different?
Anyone who has ever brought both a copper and an aluminium cable to a scrap yard has noticed a clear difference in the offered price. Even when both cables have an identical external diameter, the valuation of the copper cable is consistently higher. This is no coincidence, nor is it the result of arbitrary market decisions — the difference is grounded in the hard physical and chemical properties of both metals and the realities of global industrial demand. In this article, we explain where this disparity comes from and what genuinely affects the price of cable scrap.
Electrical Conductivity — The Key Difference Between Copper and Aluminium
The most important parameter in the context of cable applications is electrical conductivity. Copper has an electrical conductivity of approximately 58 MS/m (megasiemens per metre), while aluminium achieves only around 35 MS/m. This means that with an identical conductor diameter, a copper conductor will carry significantly more current with lower energy losses.
From an engineering perspective, the consequence is straightforward: for an aluminium cable to provide the same current-carrying capacity as a copper one, its cross-section must be approximately 1.6 times larger. Manufacturers of electrical systems must account for this when designing installations, which directly translates into higher industrial demand for copper and its higher market price — and consequently, a higher scrap purchase price for copper cable.
Metal Density and Cable Weight — You Get Paid for What You Weigh
The second significant factor is density. Copper is a considerably heavier metal than aluminium:
- Copper: density approximately 8,900 kg/m³
- Aluminium: density approximately 2,700 kg/m³
This means that a copper cable of the same length and external thickness weighs more than three times as much as its aluminium counterpart. In practice, cable scrap is settled by the kilogram — and here again, copper wins on two counts: it is heavier and more valuable per kilogram. A customer bringing in 10 metres of thick copper cable can therefore expect both a higher weight and a higher rate per kilogram.
Corrosion Resistance and Durability — Why Industry Values Copper
Copper exhibits natural resistance to corrosion under atmospheric conditions. Its surface does develop a patina over time, but this process is slow and does not compromise the metal's structure or its conductive properties. Aluminium is lighter and also fairly resistant, but it reacts with air more quickly, forming a layer of aluminium oxide. In electrical connections, this can cause increased contact resistance and technical problems, particularly when connections are crimped multiple times.
For this reason, copper dominates in installations where reliability is essential: residential construction, industry, telecommunications, automotive applications, and the energy sector. Higher demand means higher market prices for the raw material, which is directly reflected in the copper and aluminium cable scrap price list.
Melting Point and Processing — Value in the Recycling Process
Copper melts at approximately 1,085°C, while aluminium melts at around 660°C. The lower melting point of aluminium makes its recycling less energy-intensive — which might seem to increase its value. However, the equation works in reverse: copper, despite higher smelting costs, is such a sought-after raw material that its scrap purchase price remains significantly higher. Recycling copper from cables is profitable enough for smelters that demand for copper cable scrap remains consistently high — both in Poland and across European markets.
Aluminium is also readily accepted for recycling, but its purchase price per kilogram is several times lower. Smelting plants buy it primarily because remelting aluminium requires only 5% of the energy needed to produce primary aluminium from bauxite — a substantial ecological and economic saving that sustains demand for aluminium scrap.
Cable Purity and the Actual Scrap Purchase Price
It is worth knowing that whether a cable is copper or aluminium is not the only factor in its valuation. Equally important is the purity of the material — that is, the metal content relative to insulation, armour, and other non-metallic components. Cables vary in construction:
- Single-core cables (so-called bare wire) — valued highest, as virtually the entire cross-section is pure metal
- Multi-core cables with PVC insulation — price depends on insulation thickness and conductor cross-section
- Armoured cables or cables with a steel sheath — require the steel content to be factored into the valuation
- Telephone and signal cables — often small in cross-section, with a large proportion of insulation
At a scrap collection point, the valuation takes this structure into account. It is therefore worth checking the current copper scrap price list in advance, so you know what to expect before you arrive.
Copper and Aluminium Cable Scrap Buyers in Poznań and the Surrounding Area
EURO-SCRAP purchases cable scrap — both copper and aluminium — in Poznań and throughout the Greater Poland (Wielkopolska) region. Weighing is carried out on a certified scale, and every transaction is documented in accordance with the requirements of the BDO system, which is a legal obligation for entities involved in scrap collection. Customers receive full documentation of material acceptance.
We serve individual customers, construction companies, electricians, industrial facilities, and bulk cable scrap suppliers. The collection point is accessible to residents and businesses from locations such as cable scrap Komorniki, cable scrap Tarnowo Podgórne, and cable scrap Swarzędz — getting here from these directions is quick and convenient.
Summary — What to Remember Before Bringing Your Cable to a Scrap Buyer
The difference in scrap purchase prices between copper and aluminium cables stems from specific, measurable properties of both metals: copper's higher electrical conductivity, its greater density, its superior corrosion resistance, and the consistently high industrial demand for this material. Aluminium is cheaper, but it is also readily accepted for scrap — particularly when it comes from thicker power cables or overhead transmission line conductors.
If you are unsure what is worth bringing in and what price to expect, check the current rates or call us directly — you will find the up-to-date copper and aluminium cable scrap price list on our website. You can also browse the full EURO-SCRAP scrap and non-ferrous metal buying offer to learn more about what we do.
