Fiber Laser vs CO2: Which to Choose for Industrial Cutting
Complete comparison between fiber and CO2 laser for metal cutting. Advantages, operating costs, compatible materials and recommendations for your application.
Introduction
Choosing between a fiber laser and a CO2 laser is one of the most important decisions when investing in industrial cutting machinery. Both technologies have their advantages, but differences in performance, cost, and applications can determine the profitability of your investment.
How does each technology work?
Fiber Laser
The fiber laser generates the light beam through diodes transmitted via fiber optic cable. This solid-state technology requires no mirrors or gas to generate the beam, dramatically reducing maintenance and operating costs.
CO2 Laser
The CO2 laser uses an electrically excited gas mixture (carbon dioxide, nitrogen, and helium) to produce an infrared beam. Although it was the dominant technology for decades, it is being progressively replaced by fiber for metal cutting applications.
Performance comparison
Cutting speed
For metals up to 6mm thick, the fiber laser is 2 to 3 times faster than CO2. The difference narrows at greater thicknesses, but fiber maintains its advantage up to 20-25mm in carbon steel.
Energy consumption
Fiber lasers have an electrical efficiency of 30-35%, compared to 10-15% for CO2. This translates to 50-70% savings in electricity for the same cutting power.
Compatible materials
Fiber laser is ideal for: carbon steel, stainless steel, aluminum, brass, copper, and titanium. CO2 laser is better for: wood, acrylic, textiles, leather, and non-metallic materials.
Operating costs
A 3kW fiber laser has an operating cost of approximately €2-4/hour, while an equivalent CO2 runs around €15-25/hour (including gas, electricity, and mirror maintenance).
When to choose each?
Choose fiber laser if:
- Your main production involves metal cutting
- You need high production speed
- You want to minimize maintenance costs
- You work with reflective materials (copper, brass)
Choose CO2 laser if:
- You need to cut non-metallic materials
- Your application requires engraving on wood or acrylic
- You work with very thick materials (+25mm) where CO2 edge quality may be superior
Conclusion
For most industrial metal cutting applications, fiber laser is the best choice in 2026. Its lower operating cost, higher speed, and minimal maintenance make it the most cost-effective technology. At Herramentalia, we offer fiber laser cutting machines with power from 1,500W to 20,000W, adapted to any production need.