Does lower yield reduce the batch expense?

No, every processed part incurs its entered processing cost. Lower acceptance spreads that expense over fewer usable parts.

Why is the unit cost per part rather than per pound?

The observed quantities are part counts. A cost per pound requires an actual mass denominator.

What happens when every part is rejected?

Full batch expense remains visible and accepted yield is zero. Cost per accepted part is blank because no accepted part exists.

Is the original machined part value included?

No, this total covers the entered hardening process and batch fee. Add discarded part value separately when evaluating the full incident loss.

Heat Treatment, Furnaces & Thermal Processing calculator

Hardening Batch Cost Calculator

Find the expense incurred for every part hardened, including later rejects. Enter the processed count, actual accepted count, processing rate and separate batch fee.

What this calculator does

Track full incurred hardening expense and the cost carried by each accepted part.

Formula used

Processing expense = parts hardened × processing rate
Full batch expense = processing expense + setup and quench expense
Accepted yield = accepted parts ÷ parts hardened × 100
Rejected parts = parts hardened − accepted parts
Cost per accepted part = full batch expense ÷ accepted parts

Inputs explained

Parts Hardened: Count actually processed through this hardening batch.
Processing Rate per Loaded Part: Booked processing expense for each part actually hardened.
Accepted Hardened Parts: Parts accepted after the batch’s required inspection.
Setup and Quench Media Fee: Separate incurred setup and quench expense for this batch.

How to use the result

Best suited to quench reject cost Review, Accepted-Part quote reconciliation.
Original part value and subsequent rework are excluded. The yield describes this inspected batch and is not a failure prediction.

Current U.S. benchmarks

Industrial electricity averages 9.77 cents per kWh across the U.S. (EIA, Jul 2026), up 4.7% from a year earlier. Energy-intensive steps carry this directly into unit cost.

Common questions

Does lower yield reduce the batch expense? No, every processed part incurs its entered processing cost. Lower acceptance spreads that expense over fewer usable parts.
Why is the unit cost per part rather than per pound? The observed quantities are part counts. A cost per pound requires an actual mass denominator.
What happens when every part is rejected? Full batch expense remains visible and accepted yield is zero. Cost per accepted part is blank because no accepted part exists.
Is the original machined part value included? No, this total covers the entered hardening process and batch fee. Add discarded part value separately when evaluating the full incident loss.

Last reviewed 2026-10-06.