Metal

Laser marking & engraving of aluminum, steel, stainless steel and many more

laser engraving control panel

"If you want the best watch in the world, get a Rolex - if you want the best laser, get a Trotec! We’ve tested many different laser cutters for our wood models and found the Trotec machines to be the most reliable and precise."
- Chad Chapman, - Lazr-Tac -
"We purchased our Trotec laser in 2007 and have used it extensively, almost everday. When we needed an upgrade, we went with a Trotec again due to the quality of machine and customer service."
- Steve Finneseth - High Tech Laser & Polishing -
"Our Trotec laser has opened up new avenues for the appearance of products. We are getting great response from our customers."
- Karen Blackshaw - Axis Percussion -

Lasers have been used for many years to mark and engrave metal to achieve great results. Both soft metals like aluminum and hard metals like steel or hard alloys can be marked accurately, highly legibly and quickly using a laser engraving machine. Consistent, high quality results are guaranteed by using lasers for metal marking needs. Corrosion resistant markings by annealing on steel alloys offer many advantages for applications in business sectors such as medical technology and the automobile industry. Depending on your requirements metals can be engraved or marked.

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Function and advantages of laser technology

Polishing

Polishing leaves a white mark on stainless steel and other metals. It can be seen as a "lighter" way of engraving. The energy of the laser is reduced, which means that less material will be vaporized. The result is less ablation on a material like steel and a brighter marking. Regarding the parameters this means less power and higher speeds that result in less energy per distance and higher frequencies that result in less pulse energy. Polishing is not only possible on steel but on all metals.

Engraving

Engraving leaves a tangible mark on stainless steel and other metals. It leads to an ablation of the material on steel parts. The material vaporizes and the color changes. Due to the very high energy of the laser, materials like steel, titanium and other metals can be vaporized directly.
To achieve ablation, high powers and relatively slow and medium marking speeds are required. The lower the frequency, the higher the possible pulse energy. That means the lowest possible frequency should be chosen for engraving. The brown color that is left by the burned metal can be cleaned (see Polishing).


Suitable types of metal for laser marking

Suitable types of metal for laser marking and engraving

  • Stainless steel
  • hardened metals
  • alloy steels
  • high-speed steels
  • aluminum
  • anodized aluminum
  • titanium, titanium alloys
  • hard metals
  • brass
  • copper
  • precious metals
  • coated metals
anti friction bearing laser marking

Why should I buy a laser for laser marking metal?

Laser marking metal is an extremely precise and clean way to process metals with non-contact, permanent markings.

  • Labels such as serial numbers, data matrix codes and logos can be applied to products and components with a high-resolution finish.
  • Metal marking or engraving is created by the laser using a non-contact process that requires no pre- or post-processing.
  • Markings produced by annealing serve as durable, acid, chemical and corrosion resistant labels that do not damage the metal surface.

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You want to learn more about Trotec lasers and applications?

Our laser experts are happy to answer your questions about our products and laser processing. They will help you discover all the possibilities of lasers. One solution, thousands of possibilities. Additionally we invite you to see our lasers and applications at one of our demonstration facilities.

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Applications for metal marking

Laser application in marking metals are typicaly used for marking products with traceability features and codes. These applications can be found in the electronics and electrical industry, mechanical engineering and tool manufacturing, in sheet metal processing, medical technology, promotional materials, jewelry and in the automotive industry.

Application examples

  • Product labeling as an anti-counterfeiting measure
  • Functional labels such as size, diameter, etc.
  • Production information, such as date of manufacture, batch number, serial number, etc.
  • Traceability codes
  • Data Matrix codes for quality assurance
  • Customization of promotional and gift items made of metals
  • Dataplates

Trotec Product Recommendations for Laser Marking