Forge Reduction Calculator

Check the reduction before the first heat.

Enter your stock and forged size. The gauge shows total reduction against your spec, and the job plan fills in heating, sequence and machining.

– : 1 Enter sizes

1Input stock

2Forged size

3Upset optional

4Required reduction

5Temperatures & last heat optional, drives the warnings

Warning settings

The 10 in trigger for the hydrogen-flaking reminder is a suggested threshold, not a spec. Your setting is saved in this browser.

Density factors are producer or typical published values; check them against your material cert. Scale loss per heat defaults are estimates; replace them with your shop's measured numbers. Grades added in the latest update show S (producer or authoritative), S2 (secondary or supplier), F (family-based) or — (not stated) next to each value. Results are a planning aid. Confirm against your customer spec and process sheet before forging.