How do you calculate part cost per stroke?

Multiply quantity by unit cost by the yield factor, add fixed setup, then divide by quantity. For 100 parts at $45, 80% yield and $250 setup: 100 x 45 x 0.80 + 250 = $3,850 total, or $38.50 per part.

Why does the yield factor reduce cost in this formula?

Here the yield factor weights the variable cost you attribute per part; at 80% the captured variable cost is $3,600 rather than $4,500. Treat the factor per your costing convention — some shops instead inflate cost by dividing by yield to cover scrap.

How does run quantity change part cost per stroke?

Fixed setup spreads over more strokes as quantity rises. The $250 setup adds $2.50 per part on 100 pieces but only $0.25 on 1,000, which is why long runs quote cheaper per piece.

What is a good part cost per stroke?

There's no universal target — it depends on tonnage, part complexity and material. Benchmark it against your quoted price to confirm margin, and against sister parts on the same press to catch outliers.

How do I lower cost per stroke?

Raise strokes-per-minute, cut setup time with quick-die-change, improve yield to keep more good parts, and run larger lots to amortize the fixed setup over more pieces.

Cost per stroke vs cost per part — are they the same?

On a single-out die, one stroke makes one part so they match. On a multi-out die, one stroke yields several parts, so divide the stroke cost by cavities to get true part cost.

Sheet Metal Stamping & Press Lines calculator

Part Cost Per Stroke Calculator

Part Cost Per Stroke rolls the variable cost of running a press, the yield you actually get, and the fixed die setup and amortization into a single defensible per-piece number. Estimators and program managers lean on it to quote stamped parts and to compare a short setup-heavy run against a long amortized one. Because a stamping cell's economics hinge on spreading fixed setup over strokes while yield eats into good parts, the per-piece figure moves fast with volume. It is the anchor number every stamping quote is built around.

What this calculator does

Part Cost Per Stroke rolls the variable cost of running a press, the yield you actually get, and the fixed die setup and amortization into a single defensible per-piece number.
Use it when part cost per stroke in sheet metal stamping and press lines is being put through a sheet metal stamping and press lines weighted-cost review.
It computes the yield-weighted total cost of a stamping run plus fixed setup, and divides by quantity to give cost per part.

Formula used

Part Cost Per Stroke cost = quantity × rate × capture factor + fixed cost
Per-unit part cost per stroke = total cost ÷ quantity

Inputs explained

Parts produced across the run:
Fully-burdened cost per part:
Good-part yield factor:
Die setup and amortization cost:

How to use the result

Use it when quoting a new stamped part, re-costing an existing run at a different volume, or checking whether a setup-heavy short run still pencils.
It treats unit cost and yield as flat across the run; real learning-curve effects, die wear and material price moves are not captured in a single-rate model.

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 part cost per stroke? Multiply quantity by unit cost by the yield factor, add fixed setup, then divide by quantity. For 100 parts at $45, 80% yield and $250 setup: 100 x 45 x 0.80 + 250 = $3,850 total, or $38.50 per part.
Why does the yield factor reduce cost in this formula? Here the yield factor weights the variable cost you attribute per part; at 80% the captured variable cost is $3,600 rather than $4,500. Treat the factor per your costing convention — some shops instead inflate cost by dividing by yield to cover scrap.
How does run quantity change part cost per stroke? Fixed setup spreads over more strokes as quantity rises. The $250 setup adds $2.50 per part on 100 pieces but only $0.25 on 1,000, which is why long runs quote cheaper per piece.
What is a good part cost per stroke? There's no universal target — it depends on tonnage, part complexity and material. Benchmark it against your quoted price to confirm margin, and against sister parts on the same press to catch outliers.
How do I lower cost per stroke? Raise strokes-per-minute, cut setup time with quick-die-change, improve yield to keep more good parts, and run larger lots to amortize the fixed setup over more pieces.

Last reviewed 2026-05-12.