Table of Contents
1How do the four metal-cutting technologies work?
Fiber Laser
A focused laser beam and assist gas cut compatible metal. Source, head and parameters are configuration-specific.
Metals; verify grade and thicknessPlasma
An ionized gas jet cuts electrically conductive material and creates a heat-affected zone.
Conductive metals; verify system limitWaterjet
High-pressure water, often with abrasive, erodes material without a thermal heat-affected zone.
Broad material range; verify pump and cut planFlame (Oxy-fuel)
An oxygen-fuel process cuts suitable ferrous material through heating and oxidation.
Suitable ferrous material; verify grade2Which metal-cutting process produces the required edge quality?
| Quality Metric | Fiber Laser | Plasma | Waterjet | Flame |
|---|---|---|---|---|
| Kerf width | Test source/head | Test torch | Test nozzle/abrasive | Test torch/nozzle |
| Dimensional result | Inspect sample | Inspect sample | Inspect sample | Inspect sample |
| Surface roughness | Measure edge | Measure edge | Measure edge | Measure edge |
| Heat-affected zone | Thermal process | Thermal process | No thermal HAZ | Thermal process |
| Dross/slag | Parameter-dependent | Parameter-dependent | Not molten dross | Parameter-dependent |
| Secondary work | Drawing-dependent | Drawing-dependent | Drawing-dependent | Drawing-dependent |
No process wins every job. Define permissible taper, roughness, heat effect, oxide, dross, kerf, dimensional tolerance, and secondary operations, then inspect samples made from production material.
3How do cutting speed and productivity compare?
| Productivity Input | Fiber Laser | Plasma | Waterjet |
|---|---|---|---|
| Straight cutting | Parameter test | Parameter test | Parameter test |
| Piercing | Count and time | Count and time | Entry method and time |
| Motion between cuts | Program cycle log | Program cycle log | Program cycle log |
| Loading/unloading | Material-flow study | Material-flow study | Material-flow study |
| Secondary work | Inspect and time | Inspect and time | Inspect and time |
| Accepted output | Parts per shift | Parts per shift | Parts per shift |
Compare a representative nest or part program on defined equipment. Cutting speed alone does not include piercing, motion, handling, inspection, rework, maintenance, or consumable changes.
4Which materials and thicknesses fit each cutting process?
| Material | Fiber Laser | Plasma | Waterjet | Flame |
|---|---|---|---|---|
| Carbon steel | Often suitable; test | Suitable; test | Suitable; test | Grade-dependent; test |
| Stainless steel | Often suitable; test | Conductive; test edge | Suitable; test | Generally not selected |
| Aluminum | Source/head-dependent | Conductive; test edge | Suitable; test | Generally not selected |
| Copper/Brass | Source/head-dependent | Application-dependent | Suitable; test | Generally not selected |
| Titanium | Process-control-dependent | Application-dependent | Suitable; test | Generally not selected |
| Non-metals | Usually another laser/process | Not conductive | Broad range; test | Not selected |
5How should buyers compare total cost of ownership?
| Cost Component | Fiber Laser | Plasma | Waterjet | Flame |
|---|---|---|---|---|
| Capital + finance | Written quote | Written quote | Written quote | Written quote |
| Utilities | Power, gas, extraction | Power, gas, extraction | Power, water, abrasive | Fuel, oxygen, extraction |
| Consumables | Nozzle, lens, filters | Electrode, nozzle, gas | Orifice, mixing tube, abrasive | Nozzle, gas |
| Maintenance | Source, head, motion | Torch, power, motion | Pump, plumbing, catcher | Torch, gas system, motion |
| Labor | Time study | Time study | Time study | Time study |
6Which cutting process fits each industry application?
Automotive
Compare laser / pressCheck material, edge, volume, forming, joining, and traceability
Aerospace
Qualified process onlyMaterial and customer process specifications control the choice
Heavy Construction
Compare laser / plasma / flameCheck plate, edge preparation, welding, output, and total cost
Electronics
Compare laser / punchingCheck thin material, burr, heat, coating, and feature size
HVAC
Compare laser / punchingCheck galvanized sheet, feature mix, forming flow, and volume
Stone/Glass/Composites
Evaluate waterjetConfirm material behavior, abrasive effect, support, and edge acceptance
7Decision Guide: Which Technology to Choose?
If metal sheet and accepted output are the priorities
→ Evaluate fiber laser
Test the actual grade, thickness, nest, gas, and edge requirement
If conductive plate and edge tolerance permit
→ Compare fiber laser and plasma
Include secondary work and accepted parts per shift
If suitable thick ferrous plate is the workload
→ Compare plasma and flame
Include edge preparation, distortion, gas, and safety controls
If heat input is prohibited
→ Evaluate waterjet or mechanical methods
Confirm material, taper, moisture, abrasive, and edge requirements
If processing copper or brass
→ Test the configured fiber system and waterjet
Verify source/head compatibility and back-reflection protection
If budget is the primary constraint
→ Compare total cost per accepted part
Include capital, finance, utilities, consumables, labor, rework, and demand
Still Unsure? Talk to Our Engineers
Our application engineers can analyze your specific parts, materials, and volumes to recommend the optimal cutting technology and configuration.