Laser Cutting Kerf Calculator
Calculate kerf width for laser cutting operations. Get compensation values for precise part dimensions and nesting optimization recommendations.
Results
Enter parameters and click Calculate to view results.
Understanding Kerf
Kerf is the width of material removed during laser cutting. It represents the actual cut width caused by the laser beam and material vaporization. Accurate kerf calculation is essential for:
- Dimensional Accuracy: Parts will be smaller by half the kerf width on each cut edge
- Nesting Optimization: Proper spacing prevents parts from being undersized
- CAD Compensation: Adjust part dimensions to account for material loss
- Material Utilization: Optimize spacing between nested parts
Factors Affecting Kerf Width
Kerf width depends on multiple factors:
- Laser Power: Higher power increases kerf width
- Material Type: Different materials have varying absorption and thermal properties
- Material Thickness: Thicker materials typically produce wider kerf
- Nozzle Diameter: Larger nozzles allow wider gas flow affecting kerf
- Cutting Speed: Faster speeds may result in narrower kerf but require proper power
- Focus Position: Optimal focus minimizes kerf width
- Assist Gas: Gas type and pressure influence kerf characteristics
Typical Kerf Width Ranges
| Material | Thickness (mm) | Typical Kerf (mm) | Power Range |
|---|---|---|---|
| Carbon Steel | 1-3mm | 0.1-0.15 | 1-3 kW |
| Carbon Steel | 3-6mm | 0.15-0.25 | 2-6 kW |
| Stainless Steel | 1-3mm | 0.12-0.18 | 2-4 kW |
| Aluminum | 1-3mm | 0.15-0.25 | 3-6 kW |
| Aluminum | 3-6mm | 0.25-0.35 | 4-8 kW |
Note: Kerf width varies based on specific equipment, beam quality, focus position, and cutting parameters. These values are typical ranges for fiber laser cutting with optimal settings. Always verify with test cuts for critical applications.
Related Resources
Nesting Optimization
Maximize material utilization with proper spacing and kerf compensation
Material Parameters
Reference guide for cutting parameters by material and thickness
Power Calculator
Calculate required laser power for your cutting application
Equipment Database
Browse laser cutting machines with detailed specifications
Important: This calculator provides estimates based on typical cutting conditions. Actual kerf width should be verified with test cuts using your specific equipment and parameters. Consult manufacturer technical manuals and perform on-site testing for critical applications requiring precise dimensional accuracy.