Rubber, Tires, Foam & Elastomer Manufacturing worked example
Rubber Compound Cost at 68% yield after mixing scrap: a worked example
Here is what the math looks like when conditions slip. We hold every other input steady and drop yield after mixing scrap to 68%, then walk the calculation through step by step. Estimate the material cost of a rubber compound batch, factoring polymer and filler price, usable yield and internal-mixer setup.
The inputs for this scenario
- Compound batch weight: 500 kg (held at the documented default)
- Compound price per kg: 3.8 $/kg (held at the documented default)
- Yield after mixing scrap: 68 % (the input this scenario stresses; the baseline uses 94)
- Mixing and Banbury setup charge: 180 $ (held at the documented default)
Working through the calculation
- The calculation starts from the formula this tool documents: Compound cost = compound kg x price/kg x yield% + mixing setup.
- Total rubber compound cost works out to 1,472 $ at these inputs, and this is the headline figure for the scenario.
- Rubber compound cost per unit works out to 2.94 $ / piece at these inputs.
- Variable rubber compound cost works out to 1,292 $ at these inputs.
- Fixed rubber compound cost adder works out to 180 $ at these inputs.
How this compares with the baseline
- Against the tool's baseline example, where yield after mixing scrap sits at 94% and the headline result is 1,966 $, this scenario comes in 25.13% below the baseline at 1,472 $.
- The practical read: the gap between this scenario and the baseline is entirely attributable to yield after mixing scrap, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It covers compound material and mixing setup only — it does not include curing, molding labor, energy, or finishing costs.
Results at a glance
- Total rubber compound cost: 1,472 $ (headline result)
- Rubber compound cost per unit: 2.94 $ / piece
- Variable rubber compound cost: 1,292 $
- Fixed rubber compound cost adder: 180 $
Run it with your numbers
- To rerun this with your own numbers, open the live Rubber Compound Cost calculator, set yield after mixing scrap to your actual value, and adjust the remaining inputs to match your operation.
Last reviewed 2026-05-12.