The Return on Investment (ROI) calculation for wear linings must consider more than the purchase price. The Total Cost of Ownership (TCO) includes the part cost, maintenance labor hours, and most importantly, lost production revenue from unplanned downtime. In high-abrasion applications, technical ceramics last up to 10× longer than conventional metal alloys, yielding a payback period of just a few months.
Sacrificial Steel vs. Ceramics: Upfront Cost vs. TCO
A CT CEDUR alumina-lined component can cost up to 3× more than a mild steel equivalent. However, focusing solely on purchase price leads to the 'sacrificial steel' trap, where cheap parts are replaced repeatedly, driving up long-term operational costs.
See the detailed breakdown in our Ni-Hard vs. Ceramic comparison to understand the physical differences in hardness (9 Mohs vs. half that for steel).
How to calculate savings in your plant
To find the exact TCO for any wear point, use this formula:
TCO = Custo da Peça + Custo de Substituição + Custo da Parada
- Part Cost: Purchase price + shipping.
- Replacement Cost: Mechanical labor hours and crane/scaffolding rentals.
- Downtime Cost: Lost production revenue per hour while the line is stopped for maintenance.
An illustrative example: how the math behaves
A hypothetical example, purely to show how the math behaves: picture a silo where the metal plate is replaced every few months, with downtime hours and labour at every swap. If the ceramic lining lasts up to 10 times longer at the same point — the field benchmark for CT CEDUR alumina under continuous abrasion — replacements over the period drop to a fraction, and downtime and labour drop with them. The real return depends on YOUR numbers: current replacement frequency, downtime cost per hour and cost per intervention. Run the three variables above with your own plant data — that calculation is what tells you if and when the lining pays for itself.
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