Foundry & Forging calculator

Forging Tonnage Calculator

Compare required forging load with available press or hammer capacity as a utilization percentage. Use it when checking whether a closed-die, open-die, upset, or trim operation fits the selected press, hammer, or upsetter before scheduling or quoting.

What this calculator does

  • Compare required forging load with available press or hammer capacity as a utilization percentage.
  • Use it when checking whether a closed-die, open-die, upset, or trim operation fits the selected press, hammer, or upsetter before scheduling or quoting.
  • Checks forming load against press or hammer capacity.

Formula used

  • Forging Tonnage rate = estimated forging load ÷ available press or hammer rating × 100
  • Forging Tonnage gap to target = calculated rate - target maximum capacity use

Inputs explained

  • Estimated forging load: Enter calculated forming load, upset load, or trim load for the billet, alloy, temperature, and projected area.
  • Available press or hammer rating: Use rated press tonnage, hammer capacity, or approved capacity limit for the operation.
  • Target maximum capacity use: Use the shop limit or engineering target for safe, repeatable capacity loading.

How to use the result

  • Use before releasing a forging route or quote.
  • This calculator is an estimating tool. Results can change with alloy chemistry, furnace practice, ladle losses, mold design, gating and riser layout, core condition, pattern allowance, die temperature, press condition, inspection criteria, rework rules, energy rates, labor standards, and actual shop performance. Validate safety-critical, metallurgical, tooling, press-capacity, and customer-spec decisions with qualified engineering, metallurgy, OEM data, and the applicable control plan.

Common questions

  • What information do I need before using the Forging Tonnage? Use estimated load, available equipment rating, and target capacity utilization.
  • What does the result mean? It shows how much of the available forging capacity the job uses.
  • When is the result only an estimate? This calculator is an estimating tool. Results can change with alloy chemistry, furnace practice, ladle losses, mold design, gating and riser layout, core condition, pattern allowance, die temperature, press condition, inspection criteria, rework rules, energy rates, labor standards, and actual shop performance. Validate safety-critical, metallurgical, tooling, press-capacity, and customer-spec decisions with qualified engineering, metallurgy, OEM data, and the applicable control plan.
  • What decision can I make from the result? Use it to select a press, identify overload risk, route the job, or decide whether engineering review is needed.

Last reviewed 2026-05-12.