How do you calculate heat treat scrap cost?

Multiply the number of scrapped parts by the value per part and the capture percentage, then add any fixed lab or containment cost. With 18 parts at $85 each, full capture and a $500 lab cost you get 18 x 85 x 1.0 + 500 = $2,030 total, or about $112.78 per scrapped part.

Why is the cost per part higher than the value per part?

Because the fixed containment or lab cost is spread across only the scrapped parts. In the example, $85 of part value plus $500 of lab cost over 18 parts works out to $112.78 each, since the failure investigation is charged to the same small batch.

What is a good heat treat scrap rate?

World-class commercial heat treat scrap runs well under 1 percent, with many aerospace and medical accounts targeting under 0.5 percent. Anything consistently above 2 to 3 percent on a part family signals a process control problem worth a thermal survey or fixture review.

Should rework be included in scrap cost?

No. This calculator is for parts that are truly junked. Salvageable conditions like under-hardness that can be re-austenitized and re-quenched belong in a separate rework cost, since the part value is recovered.

What is the scrap cost capture field for?

It lets you discount the loss when some value is recoverable, for example when scrapped parts are sold as scrap metal or when a customer covers part of the material. Set it to 100% to charge the full part value, or lower it to net out any recovery.

How do I reduce heat treat scrap cost?

Attack the largest dollar contributors first. Common high-impact fixes are load thermocouple surveys to catch hot or cold zones, slower or stepped quenching to cut distortion and cracking, fixturing to control sag, and incoming material and hardness verification before the load goes in.

Heat Treatment, Furnaces & Thermal Processing calculator

Heat Treat Scrap Cost Calculator

Heat treat scrap cost quantifies the dollars lost when hardened, carburized, or quenched parts fail to meet spec and must be junked. Heat treat shops, captive metallurgical departments, and quality engineers use it to attach a real number to distortion, cracking, soft spots, and decarb so a recurring problem can be ranked against scrap on every other job. Because heat treat sits late in the value stream, each scrapped part already carries all the upstream machining and material value, which is why a handful of cracked gears can dwarf the cost of the furnace run itself. Putting that number in front of operations is usually what unlocks budget for a load thermocouple survey, a quench bath upgrade, or tighter incoming hardness checks.

What this calculator does

Estimate the cost impact of heat treat scrap from scrapped parts, part value, scrap capture percent, and fixed containment or analysis cost.
Use it when overheating, underhardness, cracking, quench distortion, oxidation, decarb, or case depth failures create scrap.
It multiplies scrapped heat treated parts by their fully-loaded value and a capture percentage, then adds any fixed containment or lab cost to give total scrap dollars and cost per part.

Formula used

Captured heat treat scrap cost = scrapped parts × value per scrapped part × scrap cost capture
Total heat treat scrap cost = captured scrap cost + fixed containment or lab cost

Inputs explained

Scrapped heat treated parts:
Value per scrapped part:
Scrap cost capture:
Fixed containment or lab cost:

How to use the result

Use it after a furnace load fails inspection, during a corrective-action review, or monthly to roll up scrap by part number and trace the loss to a specific process or shift.
The value-per-part figure must reflect the part's accumulated cost at the heat treat step, not just raw stock; using bare material cost understates the loss badly because all prior machining value is already invested.

Current U.S. benchmarks

Industrial electricity averages 8.66 cents per kWh across the U.S. (EIA, Apr 2026), up 5.5% from a year earlier. Energy-intensive steps carry this directly into unit cost.

Common questions

How do you calculate heat treat scrap cost? Multiply the number of scrapped parts by the value per part and the capture percentage, then add any fixed lab or containment cost. With 18 parts at $85 each, full capture and a $500 lab cost you get 18 x 85 x 1.0 + 500 = $2,030 total, or about $112.78 per scrapped part.
Why is the cost per part higher than the value per part? Because the fixed containment or lab cost is spread across only the scrapped parts. In the example, $85 of part value plus $500 of lab cost over 18 parts works out to $112.78 each, since the failure investigation is charged to the same small batch.
What is a good heat treat scrap rate? World-class commercial heat treat scrap runs well under 1 percent, with many aerospace and medical accounts targeting under 0.5 percent. Anything consistently above 2 to 3 percent on a part family signals a process control problem worth a thermal survey or fixture review.
Should rework be included in scrap cost? No. This calculator is for parts that are truly junked. Salvageable conditions like under-hardness that can be re-austenitized and re-quenched belong in a separate rework cost, since the part value is recovered.
What is the scrap cost capture field for? It lets you discount the loss when some value is recoverable, for example when scrapped parts are sold as scrap metal or when a customer covers part of the material. Set it to 100% to charge the full part value, or lower it to net out any recovery.

Last reviewed 2026-05-12.