Anodising Parameter Calculator

Estimate suggested current density, total current and anodising time for sulphuric anodising on aluminium. Select process type, alloy series, coating thickness and exposed area. The tool applies a simple, transparent model to give planning values – you still own the process window and specification compliance.

The calculator uses a simplified linear growth model. Outputs are for guidance only and should be validated against your qualified process and customer requirements.

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Step 1

Process & Part Inputs

Define the anodising process, alloy, thickness and area.

Process type *	Type II typically ~5–25 µm; Type III typically ~25–75 µm depending on spec.
Alloy family *	Used only as a weighting factor for growth efficiency – it does not replace metallurgical judgement.
Target coating thickness *	Enter external thickness in µm. Typical: 5–25 µm (Type II), 25–75 µm (Type III).
Total exposed area *	Area in dm². 1 dm² = 100 cm² = 0.01 m². For example, 0.1 m² ≈ 10 dm².
Bath temperature *	Type II planning: ~18–22 °C. Type III hardcoat planning: typically 0–5 °C (chilled).
Notes

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Output

Suggested Parameters & Estimates

Current density, total current, time and nominal voltage window.

Enter the inputs above and click Calculate Parameters to see suggested current density, load current and estimated anodising time.