Kerf Width Reference

View kerf width estimates by material, thickness and nozzle, and approximate material loss.

Reference Data: Values from typical ranges. Actual kerf depends on machine, focus, gas pressure, and speed. Always verify with test cuts for your setup.

Reference notes

Last reviewed: 2026-04-27. Kerf bands are representative parameter-table and job-shop measurement assumptions; tight-tolerance work still requires test cuts on the actual machine.

Review methodology and assumptions

Lookup

Material type affects kerf width

Material thickness

In this reference, larger nozzles are associated with wider kerf values

For material loss calculation

Recommended Nozzles

1.5mm_nozzle2.0mm_nozzle

Kerf Width

Enter inputs and click Calculate to see kerf width.

Reference Table (Mild Steel, excerpt)

Thickness1.5mm nozzle2.0mm nozzle2.5mm nozzle
1mm0.180.24-
2mm0.220.28-
3mm0.250.320.38
5mm0.280.350.42
8mm-0.380.45
10mm-0.420.5

Kerf values and nozzle associations in this table come from a reference matrix for mild steel. Treat them as starting points and confirm actual kerf and nozzle choices with your own cut charts and test cuts before using them for tight-tolerance work or detailed cost calculations.