Industrial Laser Marking

Since the arrival of fiber, UV, and CO2 laser technology, the industrial sector has been shifting toward laser marking for part identification. And there are good indications this trend will continue. Today’s industrial lasers are better suited for production lines than other marking technologies like inkjet printing, dot peen marking, and printed labels.

Since lasers are being continuously improved, laser processes are faster than ever, and the generated markings are more robust.

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What Is Industrial Laser Marking?

Industrial laser marking is a non-contact process that uses a focused laser beam to create permanent identifiers such as data matrix codes, serial numbers, barcodes, and logos directly on parts in production environments.

Unlike inkjet printing or printed labels, it requires no consumables and produces permanent marks that can even survive surface treatments like shotblasting, e-coating, and heat treatment.

Laser Etching

Laser etching melts a thin top layer of the surface, creating a micro-roughness that scatters light differently, which produces a contrast. Because it removes almost no material (typically under 25 µm) it's the fastest process and the ideal marking solution for most applications, creating permanent identifiers without affecting the cycle time. It's often used in the primary metals industry, the metal fabrication sector (such as stamping and welding), and in assembly lines.

Laser Engraving

Laser engraving removes material to create a cavity in the part, going deep enough that the marking survives abrasion, machining, and surface treatments. It's slower but more robust than laser etching, and requires more laser power to keep the cycle time low. This process is often found in automotive foundries like casting and forging plants, which rely on laser engraving machines to engrave workpieces at the start of the manufacturing process, and for markings like data matrix codes and VIN numbers that must remain readable through shotblasting.

Laser Annealing

Laser annealing removes no material at all. It heats the metal below its melting point, triggering a chemical reaction beneath the surface that produces a dark, high-contrast mark while leaving the part perfectly flat. This makes it the required process for stainless steel, where it preserves the chromium oxide layer and prevents rust from getting into the metal. It's used where corrosion resistance and a smooth, cleanable surface matter (medical devices, surgical instruments, and food-grade equipment).

Laser Ablation

Laser ablation strips away a coating to expose the substrate underneath, using the color difference between the two to form the marking. It works on paint, e-coat, anodized layers, plating, and oxide. Since the base material is left untouched, it's the process to use when parts arrive already coated or when an oxide layer has to be cleared before a permanent mark is applied.

Types of Industrial Lasers

Laser type	Wavelength	Best-suited materials	Marking speed	Maintenance	Typical industrial use
Fiber	≈1,070 nm	Steel, stainless steel, aluminum, magnesium, zinc, lead, copper, rubber	Fastest, meets the shortest production cycle times, with power up to 2,000 W for deep engraving	Lowest: sealed, air-cooled or water-cooled. For 500W+, no optical realignment, up to 100,000 hours	Metal part traceability, direct part marking, foundries, primary metals, automotive
UV	≈355 nm	Plastics, glass, ceramics, PCBs, silicon wafers, sapphire, coatings, polyimides, wires	High precision over raw speed; spot sizes down to 7 µm	Moderate: DPSS (Diode-Pumped Solid-State) frequency tripling generates internal heat that limits power and uptime	Heat-sensitive and delicate parts, semiconductors, medical devices, electronics
CO2	≈10,600 nm	Plastics, polymers, wood, cardboard, fabrics, rubber, glass (non-metals)	Fast on thin, flat organic materials	Higher: sensitive to vibration, requires periodic optical realignment; mirrors, lenses and windows degrade with use	Plastics and polymer marking, packaging, converting, thin flat materials

Fiber Lasers

Fiber lasers are the default choice for industrial laser marking. They mark metals faster than any other laser type, run 24/7 in high heat, dust, and oil, and need essentially no maintenance (no optical realignment, no consumables, no print heads).

With enough power, the same laser that etches a data matrix code can also engrave deep enough to survive shotblasting, or strip paint, oxide, and rust from the surface before marking.

UV Lasers

UV lasers trade speed for precision. At 355 nm, they mark through a cold process that leaves no heat damage, which makes them the option for delicate and heat-sensitive parts (PCBs, silicon wafers, glass, ceramics, coated surfaces, and fine wires).

Spot sizes go down to 7 µm, small enough for markings that other lasers can't resolve, and they can mark on the fly. Where fiber lasers are too aggressive, UV is usually the answer.

CO2 Lasers

CO2 lasers are typically used to mark carbon-based materials (plastics, wood, cardboard, fabrics, and rubber). They work well on thin, flat parts. Their tradeoff is automation: their optical configuration makes them sensitive to the mechanical vibration found on production lines, and misalignment means downtime. For inline applications, you should test whether a fiber or UV laser can mark your material first.

Benefits of Laser Engraving Systems & Machines

Our laser products include systems and machines that can operate efficiently in challenging conditions and high-volume production. They require very little maintenance, so downtime is kept to a minimum. Short cycle times won’t be an issue either, as our lasers are the fastest on the market. Our unique laser engraving technology generates high-quality, permanent markings that remain legible under all circumstances, including after surface treatments like shotblasting and e-coating.

Robust systems
Permanent markings
Resist surface treatment
Low maintenance
High-speed lasers
Non-contact marking
No consumables needed
High resolution & precision

Standalone Laser Marking Systems

Our industrial laser marking systems include fiber, UV, and CO2 lasers to mark metals, plastics, glass, ceramics, PCBs, sand, and other materials. Fiber lasers are ideal for metal marking and are available from 10W to 2,000W to meet everything from standard traceability to high-speed, high-power applications.

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Class-1 Laser Marking Machines

Our laser marking machines are complete, Class 1-certified solutions designed for robots, conveyors, or manual loading. Ready for production, they combine industrial-grade performance with seamless integration into manufacturing environments.

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Laser Marking vs. Dot Peen, Inkjet & Labels

Technology	Permanence	Consumables	Maintenance	Cycle time	Survives surface treatment
Laser marking	Permanent	None	Very low, non-contact, no wear parts	Shortest	Yes: shotblasting, e-coating, heat treating
Dot peen	Permanent	Pins	Moderate, stylus wear, contact deforms the part	Slow	Partially: depth survives, contrast degrades
Inkjet	Temporary	Ink, solvent	High, print head cleaning, clogging	Fast	No
Printed labels	Temporary	Labels, adhesive, ribbon	Moderate, applicator jams, restocking	Fast	No: labels burn, peel, or fall off

Marking That Survives Shotblasting, E-Coating & Heat Treatment

Traceability only works if the code is still readable at the end of the line. Shotblasting normally erases direct part markings. With the right cell size/depth marking ratio, blast particles can’t damage the code readability.

Laserax sizes the data matrix to match your specific blasting media using a custom process. That means die cast parts can hold traceability from die extraction all the way to the assembly line.

Laser Safety: Class 1 vs. Class 4 in Production

With a Class 1 turnkey machine, operators need no protective eyewear, no restricted laser area, and no separate safety program. The machine arrives compliant and drops into an existing line.

Integrating an open-beam Class 4 laser marker means the responsibility shifts to you: appointing a laser safety officer, training personnel, installing barriers, curtains, interlocks and signage, and supplying eyewear rated for the specific wavelength. That work is worth doing when the laser has to be embedded in a larger automated cell.

How Much Does an Industrial Laser Marking System Cost?

An industrial laser marking system starts at around $35,000 to $40,000 for a standalone laser marker (a laser source, scanner, and controller you integrate into your own line or enclosure).

A complete turnkey machine costs more because it includes the Class-1 enclosure, dust and fume extraction, part handling, safety certification, and software. Manually loaded workstations start at roughly $120,000, and higher-throughput configurations like a rotary table start closer to $230,000. Fully automated robot and conveyor cells are quoted per application.

Most of the variation comes from four things: laser power, automation level, safety and certification requirements, and options like autofocus, vision systems, and barcode validation.

Higher power costs more but buys back cycle time, which is usually the deciding factor on an inline application.

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