What Materials Are Used in Fiber Laser Marking?

Fiber laser marking is one of the most widely used technologies in modern manufacturing. With its high precision, fast marking speed, and long service life, fiber laser marking machines are widely applied in industries such as automotive manufacturing, electronics, aerospace, medical devices, tools, and metal fabrication. But what materials are suitable for fiber laser marking? Understanding this helps buyers choose the right laser engraving machine for their production needs.

1. Metals – The Primary Materials for Fiber Laser Marking

Fiber laser technology works best on metal materials due to its 1064 nm wavelength, which is highly absorbed by metals. This allows the laser to create clear, permanent, and high-contrast marks.

Common metal materials include:

• Stainless steel – used for medical tools, kitchenware, and industrial parts, Sheet metal processing
• Aluminum and anodized aluminum – widely used in electronics and nameplates
• Carbon steel and mild steel – common in machinery and automotive parts
• Brass and copper – used in electrical components and decorative products
• Titanium – widely used in aerospace and medical implants
• Fiber lasers can produce deep engraving, black marking, annealing marking, and high-contrast logos on these metals.

2. Plastics Compatible with Fiber Laser Marking

Certain engineering plastics can also be marked with fiber lasers, especially when they contain laser-sensitive additives.

Typical plastics include:

• ABS
• PVC
• PE
• PP
• PC (Polycarbonate)

Fiber laser marking is often used to engrave QR codes, barcodes, serial numbers, and traceability codes on plastic components in the electronics and automotive industries.

3. Coated and Painted Materials

Fiber laser machines can easily mark materials that have coated, painted, or anodized surfaces. In many cases, the laser removes the surface coating to reveal the base material underneath, creating a strong contrast.

Examples include:

• Powder-coated metals
• Painted metal surfaces
• Anodized aluminum
• Electroplated materials

This method is widely used for industrial nameplates, product labels, and equipment identification plates.

4. Precious Metals and Jewelry Materials

Fiber laser engravers are also widely used in the jewelry industry due to their extremely fine beam quality.

Suitable materials include:

• Gold
• Silver
• Platinum
• Palladium

They can engrave logos, patterns, personalization text, and serial numbers with extremely high precision.

5. Materials Not Ideal for Fiber Laser Marking

Although fiber lasers are very versatile, some materials are not ideal for this technology. For example:

• Glass
• Crystal
• Wood
• Leather
• Acrylic
• Paper

These materials absorb different laser wavelengths and are better processed using UV laser marking machines or CO₂ laser engraving machines.

Fiber laser marking machines are primarily designed for metal engraving and industrial identification, making them ideal for materials such as stainless steel, aluminum, brass, copper, titanium, coated metals, and certain plastics. Their ability to produce permanent, high-precision, and high-speed markings makes them a key tool in modern manufacturing.

When selecting a laser marking machine, it is important to consider the type of material you plan to process. Choosing the right laser technology ensures the best marking quality, efficiency, and long-term reliability for your production line.

If you are still unsure whether your product is suitable for fiber laser marking, please contact us for a free test!