Refractories, Furnace Linings & Foundry Consumables worked example

Service Life ROI with premium lining upgrade investment of 12,500 $: a worked example

Suppose premium lining upgrade investment falls to 12,500 $. This page works the full calculation at that level so you can see exactly which result moves and by how much. Service Life ROI tells you how fast a premium refractory upgrade pays for itself through longer campaign life and fewer relines.

The inputs for this scenario

  • Premium lining upgrade investment: 12,500 $ (the input this scenario stresses; the baseline uses 25,000)
  • Annual savings from longer campaign life: 18,000 $ / yr (held at the documented default)
  • Annual support and monitoring cost: 2,500 $ / yr (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Net annual savings = annual savings - annual support.
  • Payback period works out to 0.81 yr at these inputs, and this is the headline figure for the scenario.
  • Net annual savings works out to 15,500 $ / yr at these inputs.
  • Investment works out to 12,500 $ at these inputs.
  • Five year net works out to 65,000 $ at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where premium lining upgrade investment sits at 25,000 $ and the headline result is 1.61 yr, this scenario comes in 50% below the baseline at 0.81 yr.
  • It computes payback period in years by dividing the upgrade investment by net annual savings, where net savings is gross annual savings minus annual support cost. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.

Results at a glance

  • Payback period: 0.81 yr (headline result)
  • Net annual savings: 15,500 $ / yr
  • Investment: 12,500 $
  • Five year net: 65,000 $

Run it with your numbers

  • To rerun this with your own numbers, open the live Service Life ROI calculator, set premium lining upgrade investment to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.