What Materials Can Be Cut with a Fibre Laser?

Understanding Fibre Laser Cutting

Fibre lasers generate a highly focused, high‑power beam that is directed through a cutting head onto metal workpieces. The energy absorbed by the material causes temperatures to rise above 3,000 °C, instantly melting and vaporising the metal along the laser path.

In the UK, all fibre laser systems must be fitted with a protective enclosure to prevent stray reflections from reaching the operator. Strict safety protocols are essential whenever you work with high‑energy lasers.

Material thickness, composition, and reflectivity influence the required power rating (Watts or kW) and assist gas (oxygen, nitrogen, etc.). Reflective metals can damage the lens or head if the laser is not equipped with a reflective‑absorption system.

Materials Compatible with Fibre Laser Cutting

Mild (Carbon) Steel – Fibre lasers can cut mild steel across a wide range of thicknesses. A 2 kW system will reach deeper than a 750 W unit, but both can achieve clean cuts on sheet steel up to 6 mm.

Stainless Steel – Stainless alloys are among the most common workpieces. With the right power level and gas flow, fibre lasers produce high‑quality, edge‑finished cuts on grades 304 and 316.

Titanium – Although less common, titanium plates are readily processed with a dedicated titanium fibre laser. Optimising speed, assist gas, and laser parameters prevents oxidation and ensures a smooth cut.

Aluminium – Aluminium’s high reflectivity demands a laser source with a built‑in reflection‑absorption feature. Using the correct head protects the optics and yields a crisp, burr‑free edge.

Brass & Copper – These high‑reflectivity metals can be cut, but only with a laser equipped with a specialist reflective‑absorption system. The result is a precise cut with minimal spatter.

Fibre lasers offer speed, accuracy, and large cutting beds, making them ideal for a variety of metal‑cutting applications. Explore our full range of fibre laser models to find the perfect fit for your workshop.