Casting Yield Calculator

Inputs

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Mass of one finished casting before gates, runners and risers.
kg
Number of casting cavities in one mold or pour.
castings
Sprue, runner, gate and other feed-system metal per mold, excluding risers if entered separately.
kg
Total riser or feeder metal per mold.
kg
Accepted castings wanted from the batch.
castings
Expected rejected castings as a percent of castings poured.
%
Metal lost to oxidation, dross, skimming, transfer and handling before poured metal reaches the mold.
%
User-entered metal price. This is not a live commodity or supplier price lookup.
$/kg

Results

Default result
Edit inputs
Gross casting yield (Y_gross)
58.82 %
Pass

Net casting mass in one mold divided by total poured metal in that mold.

Also computed

Net batch yield (Y_net) Pass 54.21 %

Expected accepted casting mass divided by melt charge before melt/handling loss.

Poured mass per mold (m_p,mold) 6.8 kg

Gate + riser mass per mold (m_feed) 2.8 kg

Molds to pour (N_mold) 11 molds

Castings poured (N_poured) 22 castings

Expected accepted castings (N_accept) 20.9 castings

Method notes 4 notes
  • Gross yield = net casting mass per mold / poured mass per mold.
  • The mold count is rounded up from target good castings, castings per mold and the entered reject rate.
  • Charge mass = batch poured mass / (1 - melt-loss fraction). Return metal is reported separately and is not automatically credited back against the charge.
  • This is a foundry metal-accounting worksheet only. It does not model riser feeding, directional solidification, alloy chemistry, dross practice, furnace recovery, remelt limits, inspection acceptance or production approval.

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