Laser vs Waterjet vs Plasma: Cutting Stainless Sheet Cleanly and Cost‑Effectively


This is a stainless‑only take so you can decide fast. If edges will be visible or you’ll weld right after cutting, start with laser; if heat is a concern or you need pristine edges on thick parts, lean to waterjet; if you are on thick plate and cost dominates, consider high‑def plasma and add a quick edge clean‑up step.

What matters for stainless

  • Finish: For No.4/HL faces, protect film and set laser focus/gas to avoid burn marks. Waterjet avoids heat tint entirely.
  • Welding: Laser‑cut edges weld clean with minimal prep. Plasma may need grinding where the seam lands.
  • Holes/slots: For small holes, cut undersize and finish‑drill for roundness and tolerance.

Process notes

  • Laser: Nitrogen assist keeps edges bright; set a burr limit and micro‑tabs for small parts.
  • Waterjet: Use taper compensation on thick plate; pick a higher quality level for cosmetic edges.
  • Plasma: Good for 8–20 mm where speed matters; plan for edge grind on visible faces.

Spec lines you can copy

  • Laser: 304 2B, 1.5 mm; N2 assist; burr ≤0.05 mm; tabs on parts <40 mm.
  • Waterjet: 316L, 10 mm; high quality; taper compensation on; no HAZ; protect film.
  • Plasma: 304, 12 mm; hi‑def; light grind on cosmetic edges; min hole ≥1.5×t.

Share thickness, finish and whether parts go straight to welding. We’ll recommend the process and hand‑off that keeps your line moving.