Engineering tools

Aluminium vs steel mould — the break-even calculator

Aluminium tools cost less and cut faster; steel tools live longer. The decision is therefore arithmetic, not philosophy: over your programme’s total volume, which option needs fewer rupees of tooling? Enter both quotes, both expected lifetimes, and the volume — the calculator finds the winner and the crossover point where the answer flips.

What the arithmetic leaves out — in both directions

For aluminium: faster heat removal can shorten cycles meaningfully, and softer steel-safe changes are cheaper mid-programme. Against it: every tool change means re-qualification, first-article approval and supply risk — and abrasive glass-filled materials can devour an aluminium cavity long before its nominal life. Steel's case strengthens with volume, tolerance criticality and material aggressiveness — which is why our own production tooling is steel, manufactured by proven partner toolrooms under Kruger's design authority, validated on our machines.

Before the tooling decision

Size the part's economics first with the part cost calculator and cycle-time estimator — cavitation choices change both sides of this break-even.