What Are Metal QR Code Tags?

How Are QR Codes Marked on Metal?

QR code marking on metal can be performed using processes such as laser marking or engraving. The appropriate method depends on the material, surface and application.

Posttech supplies laser-marked metal tags that can carry:

• QR codes
• Data Matrix codes
• 1D barcodes
• Serial numbers
• Asset IDs and URLs
• Logos and human-readable text

Each tag may carry the same information or unique variable data for serialization and asset identification.

Why Use Metal Instead of a Printed QR Label?

Paper, polymer and vinyl labels are suitable for many applications. Industrial assets, however, may be exposed to repeated handling, weather, moisture, cleaning, abrasion or other operating conditions that reduce the useful life of conventional labels.

A properly selected metal tag provides a durable physical carrier for machine-readable identification. Actual service life depends on the material, marking process, mounting method and operating environment.

Metal QR Tag vs Direct Marking on an Asset

A QR code can sometimes be marked directly onto an asset. In other situations, a separately manufactured metal identification tag is more practical.

A separate tag may be useful when:

• The asset may later be painted or recoated
• A standard identification format is required across different assets
• The asset surface is unsuitable for direct marking
• The identification plate may need independent replacement
• The scanning location needs to be controlled

What Materials Are Used?

Stainless Steel QR Code Tags

Stainless steel is a durable general-purpose material for machinery, equipment, cylinders, outdoor assets and long-life industrial identification. Posttech offers SS304 and SS316 options.

Aluminium QR Code Tags

Aluminium, also commonly searched as aluminum, is lightweight and can be used for panels, cabinets, meters, equipment, logistics assets and inventory identification.

Titanium QR Code Tags

Titanium can be considered for specialized applications where low weight, corrosion resistance or other titanium-specific material properties justify its use. Suitability should be validated for the actual application.

Can Every Metal QR Tag Have a Different Code?

Yes. Metal QR tags can be produced with variable data so that every tag has its own QR code, Data Matrix code, barcode, serial number, asset ID or URL.

This allows a physical asset to be associated with a unique digital record instead of using the same code on every tag.

How Are Metal QR Tags Used for Asset Tracking?

The code on a metal tag can identify or link to information such as an asset record, inspection history, maintenance information, operating instructions, ownership data or an ERP or asset-management record.

The QR code does not need to contain the complete asset history. It can simply contain a unique identifier or URL used to retrieve information from a digital system.

Read more: Metal QR Code Tags for Asset Tracking .

What Industries Use Metal QR Code Tags?

• Industrial manufacturing
• Industrial gases and cylinder operations
• Utilities and infrastructure
• Equipment manufacturers and OEMs
• Logistics and returnable assets
• Maintenance and inspection operations
• Asset-intensive industrial businesses

What Affects Metal QR Code Scanning?

Scan performance can be affected by QR code size, marking contrast, surface reflection, viewing angle, scanner or camera capability, contamination and physical damage.

These factors should be considered when specifying a tag. Detailed tag design should be validated for the actual scanning and operating conditions.

See: Metal QR Code Scanning Problems and Common Causes .

How Do You Choose a Metal QR Code Tag?

Useful project inputs include:

• Preferred material
• Tag dimensions
• Quantity
• QR code, barcode or Data Matrix requirement
• Fixed or variable data
• Mounting method
• Operating environment
• Expected scanning conditions

For a comparison of available materials, see our metal QR code tag products.