Forging Die Cost Per Piece Calculator
Die cost per piece is one of the most argued lines in a forging quote. This calculator spreads the whole life of a die set, not just its purchase price, over the pieces it actually forges. It also shows how sensitive the answer is to die life.
Your numbers
Purchase price or in-house cost of one complete die set including inserts and heat treatment.
One-time engineering, forging simulation and first-article tryout labor charged to the die.
Pieces forged from new through the last resink, until the die is retired. Use history for the same material and shape family.
Impressions are re-machined after wear or heat checking. Each cycle removes die steel and shortens the remaining stack height.
Machining, polishing, stress relief or reheat treatment, and handling per cycle.
Trim tools, ejector pins, piercing punches and wear inserts replaced during the life of the set.
Billets consumed proving out a new or resunk die before good parts flow.
Annual carrying cost on the die investment.
Your results
Planning estimate. Actual die life depends on material, forging temperature, lubricant, press type, reduction ratio and maintenance practice. Replace defaults with your own history.
Tooling cost per piece vs total die life
Sweeps Total pieces over the full die life from 5000 to 100000, holding your other inputs fixed.
Automate tooling cost standards from your ERP
Optional review of how die life and resink actuals could feed your standard cost, on your own servers.
Optional. The tool and every export work without this. No spam.
How to use the calculator
Enter the full cost of one die set, the engineering and tryout labor charged to it, and the total pieces you expect from new through the last resink. Add resink count and cost per cycle, plus the share of die cost you spend replacing inserts, punches and trim tools. Then enter annual quantity, tryout scrap and your cost of capital. The result is tooling cost per piece and annual die spend. Use the sweep to see what happens if die life comes in 30 percent short. Run it for each part family, since a shallow disc and a deep forged shank wear dies at very different rates.
The method behind the numbers
Lifetime tooling cost is the initial investment plus resinks times resink cost plus insert replacement. Dividing by total life in pieces gives die cost per piece. Tryout scrap is the billet value burned proving the die, spread over the same pieces. Carrying cost uses an average balance of half the investment, because the die is consumed roughly linearly, so it equals investment times rate divided by two times annual volume. These are standard cost-accounting steps; no proprietary factor is applied. Compare the result with the tooling line your ERP posts so that standards and actuals reconcile.
- Die cost per piece = lifetime tooling cost / total pieces over life
- Tryout per piece = tryout pieces x material cost / total pieces
- Carrying per piece = investment x rate / (2 x annual volume)
Reading the result and common mistakes
The sweep shows why die life is the biggest lever. Doubling life roughly halves the die component, while the tryout and carrying pieces barely move. Typical mistakes include quoting life from the best run rather than the average, forgetting that each resink lowers the remaining life of the impression, ignoring insert and trim tool spend, and excluding engineering from the die cost. If the customer owns the tooling, set die cost to zero and keep only the maintenance and resink lines. Review actual pieces per set every quarter and update the standard.
Frequently Asked Questions
What is a typical forging die life?
It varies by more than an order of magnitude. Hot upset and closed die work on steel can range from a few thousand to tens of thousands of pieces per die set, while aluminum forging dies often last longer. Use your own records by part family; published averages are only a starting point for new quotes.
Should resinks be counted as part of die cost?
Yes. A resink is planned rework that restores the impression and extends life, so its cost belongs to the same life as the original die. Dividing the combined cost by total pieces across all cycles gives a fair per piece figure.
How do I handle customer funded tooling?
Set the die set cost and design cost to zero if the customer paid for them, but keep resink, insert and maintenance cost if you carry them. Many contracts also make the supplier responsible for upkeep, so confirm the terms before pricing.
Why include capital carrying cost?
A die set ties up cash for months or years before the last piece is forged. Carrying cost reflects that. If your costing policy does not include it, set the cost of capital to zero and the result drops accordingly.
If you want die life, resink history and tooling cost pulled automatically from your ERP and shop floor records, we can build that connection on your own servers.
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