Which Laser Is Best for Metal Marking? (Comparative Guide to Fiber, MOPA, and CO₂)
Laser marking on metal surfaces forms the basis of industrial applications that require durable and permanent marking. For serial numbers, DataMatrix, QR codes, and logo marking on stainless steel, aluminum, titanium, and cast metals, the most commonly used technology is fiber laser systems. However, in some special applications, MOPA fiber laser and, rarely, CO₂ laser may also be preferred. This guide explains the most suitable laser technology for metal marking in detail according to material type, application need, and production conditions.
Laser Selection Criteria for Metal Marking
Material type
Metals such as stainless steel, aluminum, and titanium require different laser parameters.
Type of marking
Surface marking, deep engraving, or color marking require different laser technologies.
Contrast requirement
High-contrast marking is important for readability.
Marking speed
High speed is an important criterion in mass production lines.
Heat effect
Heat control is important to prevent material deformation.
Precision requirement
High precision is required in micro marking applications.
Automation integration
Laser systems must work integrated into production lines.
Camera verification
The readability of the codes is checked with camera systems.
Maintenance and cost
Long-term costs are important in the selection process.
Industrial suitability
- Automotive manufacturing
- Medical devices
- Electronic components
- Heavy industry
Which Laser for Which Metal?
Stainless steel
Fiber laser systems provide high-contrast marking.
Aluminum
Marking is performed on anodized and raw surfaces with fiber laser.
Cast metals
High-power fiber laser is preferred for deep engraving applications.
Color marking
MOPA fiber laser systems provide color marking.
High-precision applications
MOPA laser delivers more precise results through pulse control.
Deep engraving
High-power fiber laser is suitable for deep marking.
Inline production
Fiber laser systems work integrated with automation.
Camera verification systems
Post-marking quality control is carried out with cameras.
Parameter optimization
Power, speed, and frequency settings must be adjusted correctly.
Venox solution recommendation
The most suitable laser solution is determined with sample tests in our application laboratory.
Which laser is used for metal marking?
Fiber laser is generally preferred.
When is MOPA laser necessary?
It is used for color and precision marking.
Is CO₂ laser used on metal?
It is generally not used, except in special cases.
Can stainless steel be marked?
Yes, it is possible with fiber laser.
Can marking be done on aluminum?
Yes, it is done with fiber laser.
Is deep engraving possible?
Yes, it can be done with high-power laser.
Can it be used in inline production?
Yes, it works integrated with automation.
Is camera verification necessary?
Yes, it is important for quality control.
Are sample tests necessary?
Yes, they are recommended for the most accurate solution.
How can I get a quote?
Send your sample, and we will provide analysis and recommendations.
