How do you calculate rework cost for a stamping lot?

Multiply the flagged quantity by the per-part rework rate, multiply that by the fraction you actually rework (the capture factor), then add fixed setup cost. For 100 parts at $45/unit with 80% captured plus $250 fixed, that is 100 x 45 x 0.80 + 250 = $3,850.

What is the per-piece rework cost in the default example?

Total cost of $3,850 divided by 100 flagged parts gives $38.50 per piece. If your fresh blank plus press time costs less than $38.50, scrapping and re-running is the cheaper path.

What does the capture factor mean?

It is the share of flagged parts that are genuinely recoverable. At 80%, one in five flagged parts is beyond salvage, so you only pay salvage labor on 80 of the 100 parts — the captured value here is $3,600.

Rework or scrap — which is cheaper?

Compare per-piece rework cost to full replacement cost (material + blanking + forming + secondary ops). If per-piece rework ($38.50 here) exceeds replacement, scrap. If it is well below, salvage.

What is a good rework cost rate for a press line?

There is no universal dollar target, but healthy automotive-tier stamping shops keep total rework plus scrap under 2-3% of shop hours. Track per-piece cost over time — a rising trend usually points to a worn die or a drifting coil gauge.

Should the fixed cost include die maintenance?

Yes. Any one-time charge to enable the rework — a die touch-up, a special deburr fixture, or a full re-inspection — belongs in the fixed cost field so it is amortized across the lot rather than buried in per-part labor.

Sheet Metal Stamping & Press Lines calculator

Rework Cost Calculator

Rework cost is the total dollars a stamping shop spends salvaging parts that came off the press with burrs, springback, wrinkles, or dimensional drift instead of scrapping them. Press-line supervisors, quality engineers, and estimators use it to decide whether straightening, re-piercing, or deburring a lot is cheaper than running fresh blanks. Because rework rarely gets its own PO, the cost hides inside labor variances and blows up job margins quietly. Putting real numbers on it — variable salvage labor plus a fixed die-touch or re-inspection charge — turns a gut feel into a defensible sort/scrap decision.

What this calculator does

Rework cost is the total dollars a stamping shop spends salvaging parts that came off the press with burrs, springback, wrinkles, or dimensional drift instead of scrapping them.
Use it when rework cost in sheet metal stamping and press lines is being put through a sheet metal stamping and press lines weighted-cost review.
It computes total rework dollars for a lot as variable salvage cost across the parts you actually rework plus a fixed setup charge, then divides by the flagged quantity for a per-piece figure.

Formula used

Rework Cost cost = quantity × rate × capture factor + fixed cost
Per-unit rework cost = total cost ÷ quantity

Inputs explained

Stamped parts flagged for rework:
Rework labor & handling per part:
Share of flagged parts actually reworked:
Fixed rework setup cost (die touch-up, inspection):

How to use the result

Use it when a stamping lot fails inspection and you need to price the salvage effort before authorizing rework versus scrapping and re-running blanks.
It assumes a single flat per-part rework rate; mixed defect types (deburr vs. straighten vs. re-pierce) have very different labor and should be modeled as separate runs.

Current U.S. benchmarks

The producer price index for steel mill products stands at 348.53 (BLS, May 2026), up 6.7% from a year earlier. Quotes priced off last quarter's material cost miss this move.
U.S. iron and steel imports ran $2.1B in May 2026 (Census International Trade). The U.S. ran a trade deficit of $0.4B in the category that month. Import volumes are the pressure gauge behind tariff and reshoring decisions.
The U.S. has 53,790 fabricated metal products establishments employing about 1,441,471 workers (Census County Business Patterns, 2023).

Common questions

How do you calculate rework cost for a stamping lot? Multiply the flagged quantity by the per-part rework rate, multiply that by the fraction you actually rework (the capture factor), then add fixed setup cost. For 100 parts at $45/unit with 80% captured plus $250 fixed, that is 100 x 45 x 0.80 + 250 = $3,850.
What is the per-piece rework cost in the default example? Total cost of $3,850 divided by 100 flagged parts gives $38.50 per piece. If your fresh blank plus press time costs less than $38.50, scrapping and re-running is the cheaper path.
What does the capture factor mean? It is the share of flagged parts that are genuinely recoverable. At 80%, one in five flagged parts is beyond salvage, so you only pay salvage labor on 80 of the 100 parts — the captured value here is $3,600.
Rework or scrap — which is cheaper? Compare per-piece rework cost to full replacement cost (material + blanking + forming + secondary ops). If per-piece rework ($38.50 here) exceeds replacement, scrap. If it is well below, salvage.
What is a good rework cost rate for a press line? There is no universal dollar target, but healthy automotive-tier stamping shops keep total rework plus scrap under 2-3% of shop hours. Track per-piece cost over time — a rising trend usually points to a worn die or a drifting coil gauge.

Last reviewed 2026-05-12.