When professionals in the electronic waste industry talk about material value, two numbers come up consistently: metal composition and recovery rate. They sound related. They are often used interchangeably. They measure completely different things — and confusing them is one of the most reliable ways to miscalculate the value of a batch.
This article explains the difference, why it matters at industrial volumes, and how to use both numbers together before making a valuation or purchasing decision.
Definition: Metal Composition vs Recovery Rate
Metal composition tells you what a material contains. It is the concentration of each recoverable metal — gold, silver, palladium, copper — expressed in parts per million (ppm) or grams per kilogram (g/kg). This is a laboratory measurement of what is physically present in the material.
Recovery rate tells you how much of that content can actually be extracted during processing. It is expressed as a percentage of total mass recovered as refined metal under real processing conditions. This is not a laboratory measurement of what exists — it is an operational figure reflecting what can realistically be separated and recovered.
These two numbers are produced by different measurements and serve different purposes. A material with high metal composition does not automatically have a high recovery rate. A material with a lower composition can deliver better actual yield if its construction allows for more efficient extraction.
Why They Produce Different Numbers
The gap between composition and recovery rate is determined by how a device is built.
Electronic waste is not homogeneous. A printed circuit board is a layered structure containing metals, fiberglass, ceramics, plastics, and adhesives. The metals are not sitting loose — they are embedded in connectors, bonded to substrates, deposited in thin films, and integrated into components at a microscopic level.
During processing, physical and chemical separation methods extract the metals from this matrix. How much can be extracted depends on factors including board layer density and construction, the type and size of components, how the metals are bonded or deposited, the processing method used, and the equipment and refining capacity of the processor.
A device with high gold content distributed across deep multilayer structures may have a lower recovery efficiency than a device with slightly less gold concentrated in accessible connector components. The theoretical content is higher — but less of it comes out.
A Real Example: The Ericsson Telecom Board
The Ericsson Telecom board (TEL-0001) in the Recovert catalog illustrates this clearly.
The board weighs 682 grams per unit. Metal composition per kilogram:
- Gold (Au): 339 ppm
- Silver (Ag): 531 ppm
- Palladium (Pd): 8 ppm
- Copper (Cu): 29% of total mass
These are high precious metal concentrations — particularly gold at 339 ppm, which is significantly above average for telecom components. At first glance, this looks like a highly valuable material.
The recovery breakdown shows what actually comes out per kilogram during processing:
- Gold: 339 mg content → 94% efficiency → 317 mg recovered
- Silver: 531 mg content → 90% efficiency → 477.9 mg recovered
- Palladium: 8 mg content → 84% efficiency → 6.7 mg recovered
- Copper: 290 g content → 93% efficiency → 269.7 g recovered
Overall material recovery rate: 27.05% of total mass.
The gold recovery efficiency of 94% is strong — meaning the construction of this board allows for effective gold extraction. Palladium at 84% is lower, reflecting the difficulty of recovering palladium from certain component types.
The overall recovery rate of 27.05% means that from 1 kilogram of this material, 270.5 grams come out as refined metal. The remaining 729.5 grams — fiberglass, plastics, ceramics, non-recoverable fractions — are not recovered as metal. This is stated explicitly in the Recovert catalog: "Non-metal fraction (fiberglass, plastics, ceramics) is not recovered as metal."
Understanding this matters for pricing. The price per kilogram of 41.12 € reflects not what the board contains in total, but what can be realistically extracted and sold as refined metal — calculated against current market prices for gold, silver, palladium, and copper.
How Construction and Component Type Affect Recovery
Different device categories have different structural characteristics that directly affect recovery efficiency.
Telecom boards like the Ericsson tend to have high precious metal concentrations because they are designed for reliability and signal integrity in demanding environments — gold plating on connectors, palladium in capacitors, high copper density across board layers. They are also typically robust, multi-layer constructions with densely packed components.
Consumer electronics — smartphones, tablets — often have higher precious metal concentrations per unit weight but different structural profiles. The miniaturization that makes smartphones light and compact also means metals are distributed in extremely fine layers and micro-components, which can affect extraction efficiency depending on the processing method.
Industrial and telecom components generally have more accessible metal distributions, which contributes to higher recovery efficiency percentages despite their larger physical size.
Generation also matters. Older components were often manufactured with higher precious metal content and simpler construction compared to newer equivalents that have been engineered to reduce material use. A batch of older telecom boards may have both higher composition and better recovery characteristics than newer equipment in the same category.
How to Evaluate a Batch Using Both Numbers
Evaluating a batch correctly requires reading composition and recovery rate together — not separately.
Start with composition to understand what the material contains. Gold at 339 ppm in the Ericsson board is the primary value driver. Silver at 531 ppm adds significant volume given its lower market price per gram but higher concentration.
Then apply recovery rate to understand what you will actually extract. At 94% gold efficiency and 90% silver efficiency, this board delivers strong actual yield relative to its composition. The gap between theoretical content and recovered output is relatively small.
Finally look at price per kilogram — 41.12 € — which integrates both factors. It is not simply composition multiplied by market price. It reflects recoverable content at current market conditions.
For comparison: a board with higher gold composition but lower recovery efficiency could price out lower per kilogram than the Ericsson board. The composition headline number does not determine value — the recoverable output does.
At industrial volumes, a 10% difference in recovery efficiency across a 1,000 kilogram batch is not a rounding error. It is a material difference in yield and revenue.
How Recovert Displays Recovery Rate and Recovery Breakdown
Recovert shows both figures on every analysis page. The top-level material recovery percentage — 27.05% for the Ericsson board — gives the overall picture. The recovery breakdown table, accessible under the details section, shows content, efficiency, and recovered amount for each metal individually.
This breakdown is the most operationally useful part of the analysis. It shows not just what the material contains, but what comes out — per metal, per kilogram, with the efficiency rate that determines the gap between the two.
Used alongside certified metal composition and market-based pricing, the recovery breakdown gives a complete picture of what a material is actually worth before any transaction takes place.