Does scrap weight include the release liner?

No. Enter the net prepreg weight, fiber and resin only, after stripping the liner and backing paper. Those carry no material value and would inflate the loss this page prices.

What does delivered prepreg cost include?

The price paid plus cold chain freight, dry ice or gel packs and any receiving handling. Frozen prepreg that arrives warm or late can also add retest cost, so use the landed figure on the purchase record.

Why is scrap cost per pound above the material price?

Because handling and disposal are added on top. At the defaults the 42 lb lot pays 3,528 dollars for material plus 250 dollars of handling, lifting the figure from 84 to about 90 per pound.

Should expired prepreg be scrapped or downgraded?

Check the freezer life and out-time records first. Material still within specification can often be re-rolled to a shorter life, and only the remainder becomes scrap, which ranks ahead of disposal.

Composites, Fiberglass & Advanced Materials calculator

Prepreg Scrap Cost Calculator

Price the prepreg a job scrapped, using the delivered cost you paid and the share of that loss this job carries. Handling and disposal cost is added once, whatever the weight.

What this calculator does

Prepreg scrap cost from the net scrapped weight, delivered cost, charge share and handling and disposal.

Formula used

Variable scrap cost = scrap weight × delivered cost per pound × charge share ÷ 100
Total scrap cost = variable scrap cost + handling and disposal cost
Scrap cost per pound = total scrap cost ÷ scrap weight

Inputs explained

Prepreg Scrap Weight: Weighed net prepreg scrap; release liner and backing paper excluded.
Delivered Prepreg Cost: Delivered prepreg cost including cold chain freight and handling.
Charge Share: Share of the scrap charged to this job, from the job sheet.
Handling and Disposal Cost: Handling and disposal cost for this scrap, from the waste log.

How to use the result

Best suited to costing trim scrap from a nested layup, pricing an expired prepreg lot.
Scrap still inside its out-time may keep some value; this page values the whole weight as lost. Disposal rules for uncured thermoset prepreg vary by site, so take the handling cost from the waste log.

Current U.S. benchmarks

The producer price index for plastic resins and materials stands at 280.569 (BLS, Aug 2026), up 6.6% from a year earlier. Quotes priced off last quarter's material cost miss this move.
Steel mill PPI stands at 381.162 (BLS, Aug 2026), up 23.4% from a year earlier. New factory orders are up 8.5% year over year (Census).

Common questions

Does scrap weight include the release liner? No. Enter the net prepreg weight, fiber and resin only, after stripping the liner and backing paper. Those carry no material value and would inflate the loss this page prices.
What does delivered prepreg cost include? The price paid plus cold chain freight, dry ice or gel packs and any receiving handling. Frozen prepreg that arrives warm or late can also add retest cost, so use the landed figure on the purchase record.
Why is scrap cost per pound above the material price? Because handling and disposal are added on top. At the defaults the 42 lb lot pays 3,528 dollars for material plus 250 dollars of handling, lifting the figure from 84 to about 90 per pound.
Should expired prepreg be scrapped or downgraded? Check the freezer life and out-time records first. Material still within specification can often be re-rolled to a shorter life, and only the remainder becomes scrap, which ranks ahead of disposal.

Last reviewed 2026-10-01.