Why Fiber Laser Cutting Is Outpacing Plasma in 2025

 Why Traditional Plasma Is Falling Behind？

Back in 2019, plasma cutters still dominated in low-cost fabrication shops. They were loud, smoky, but dependable. However, shops chasing tighter tolerances and cleaner finishes soon hit a wall.

Take an industrial HVAC ducting supplier in Ankara, Turkey, running 120A plasma for 4–12mm mild steel. On paper, the system pushed out 750mm/min at 8mm thickness. In reality? They were losing 11–17% of sheets due to edge taper and rough dross buildup. Post-cut grinding alone took up 5 hours per shift.

Technical Breakthrough: What Changed with Fiber Lasers?

By early 2023, the shop upgraded to a Raytu RT-G Series 6kW fiber laser system. Results were immediate. The fiber laser uses a single-mode beam source, delivering ~25–30μm spot size, which enables a 6:1 depth-to-width ratio when cutting up to 12mm stainless. Unlike CO₂ or plasma, fiber delivery eliminates beam misalignment and mirror contamination entirely. 

They also switched to high-pressure nitrogen assist (14–18 bar), replacing oxygen, to achieve burr-free edges and zero post-processing on parts <6mm.

The RT-G system featured:


Dynamic auto-focus head with ±20μm Z-axis correction at 1kHz


Collision-avoidance smart path planning, especially during tight contour nesting


Cutting precision down to ±0.05mm across 1–12mm thickness range


Result: Speed, Cleanliness, and Cost Control

Within 3 months:


Post-processing time dropped by 87% (from 5 hours to under 40 minutes daily)


Material yield improved by 12.4%, due to tighter nesting and no thermal warping


Customer defect complaints fell to near zero, especially on visible duct flanges


The plant manager, Kemal Y., told us:


“We thought fiber was overkill for HVAC steel. Now we wonder why we waited so long.”

Learn More

The difference isn’t just in watts or price tags. Fiber laser systems bring cleaner beam quality, faster accelerations, and near-zero taper, especially in the 3–16mm metal range.

Explore the RT-G Series used in this upgrade

Over 200 sheet metal shops have switched to similar systems since 2022. It’s not just the future—it’s already the industry standard.

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