Compact data carrier
DataMatrix stores useful identification in a small marking area.
Direct part marking
QR code and DataMatrix laser marking systems
Create permanent static or unique 2D codes that connect physical parts to production, quality, service and traceability records.
Machine-readable traceability
A code is only useful when it can be read reliably.
Code type, module size, quiet zone, contrast, surface finish, marking field and reader position must work together. We develop the mark and the verification method as one application, using your actual data and parts.
Request a sample marking trialUnique serialisation
Generate a different code for every part or production cycle.
Database connection
Link the physical code with build, batch, inspection or service records.
Vision verification
Confirm presence, content and readability before product release.
How is a DataMatrix code laser marked on metal?
A fibre laser forms a DataMatrix code by engraving the metal or changing its surface contrast. The process must suit the alloy and finish, while the symbol must suit the available area, actual data and reader. A readable code also needs the correct content; decoding, data comparison and formal quality grading are separate checks.
What should a metal code marking trial include?
- Production samples: the actual steel, aluminium or other metal grade, including its coating and finish variation.
- Code and data: the real character string, required format, marking area, symbol size and quiet zone.
- Part presentation: fixture position, focus, curvature and reader or camera position.
- Acceptance checks: the expected decoded value, any required quality grade and checks after relevant cleaning, finishing or handling.
Agree the result on marked samples instead of assuming one laser setting or minimum code size will work for every part. See metal materials and finishes, code verification and grading, and serial-number data and text marking.
Code design
Design for the part, the reader and the full product life.
The smallest possible code is not always the most robust. We balance available marking area with data length, symbol size, material contrast and the reading distance expected on the production line or in service.
- QR and DataMatrix symbol generation
- Static, sequential and database-supplied data
- Human-readable text alongside the code
- Part-specific marking templates
- Reader and camera assessment
CODE CONTENTAgree the data structure early.
Provide sample strings, prefix rules, character counts and any GS1 or customer-format requirement before trials begin.
Verification & records
Confirm that the right code is on the right component.
A vision system can read the finished symbol, compare expected content and send a result to the PLC or production database. Where required, the cell can stop, reject or quarantine a failed component.
- Code presence and content check
- Readability or grading options
- Expected-versus-read comparison
- Pass/fail data logging
- Reject handling and fail-safe controls
TRACEABILITY LOOPGenerate, mark, read and record.
Closing the loop reduces the risk of an unreadable or incorrect code leaving the marking station.
Application questions
Questions about permanent 2D codes?
Every material and production process is different. We will help you turn the marking requirement into a practical specification.
Call 01865 36278501Should I use QR code or DataMatrix?+
The choice depends on available space, data content, customer or industry requirements and the readers used. DataMatrix is often selected for compact direct-part marking, while QR codes are widely recognised by general devices.
02How small can a laser-marked DataMatrix code be?+
The practical limit depends on material contrast, surface quality, optics, data length and reader capability. We establish a robust size using marked samples rather than quoting a generic minimum.
03Can the mark be checked automatically?+
Yes. A camera or code reader can inspect each finished symbol, compare the decoded content with the expected value and pass the result to production controls.
Technical content reviewed by the Oxford Traceability application team
Start your marking trial
Tell us what needs a permanent identity.
Share the material, mark content and production rate. We will help you define the right fibre laser marking system.