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ISO/TS 7352:2023 — Metal QR Code Identification

ISO/TS 7352:2023 is a global technical specification for permanent, tamper-resistant metal identification using QR or Data Matrix codes on industrial assets, vessels, and cylinders. This page explains the standard in practical terms and outlines how Posttech designs stainless steel, aluminium, and titanium QR tags to align with its durability and traceability goals.


What is ISO/TS 7352:2023?

ISO/TS 7352:2023 specifies good practices for using metal plates with machine-readable QR or Data Matrix symbols to achieve long-term identification and traceability. It emphasizes the permanence of the tag, readability of the code throughout service life, and consistency of data for reliable asset management, under real operating conditions.

Key Requirements — Plain Language Summary

1) Permanence & Durability

Resist heat, UV, moisture, chemicals, abrasion, and impact.

  • Metal substrate choice: SS 304/316, Aluminium 5xxx/6xxx, Titanium Gr.2/Gr.5
  • Marking method that alters the surface (fiber-laser etching)
  • Thickness/finish to limit warpage and maintain scanability

2) Readability & Verification

Codes should scan with standard industrial readers across service life.

  • Correct module size, contrast, and quiet zone
  • Adequate error correction; avoid visual clutter
  • Routine verification in production and field sampling

3) Data Consistency

Content should follow a defined data model for traceability.

  • Stable identifiers or URLs with versioned schemas
  • Secure ERP/CMMS mapping for lifecycle events
  • Change control for serials and replacements

4) Mounting Integrity

Attachment must survive the same environment as the asset.

  • Rivets / clamp bands / weldable carriers; adhesives where validated
  • Consider thermal cycling and quenching stresses
  • Avoid damage to the code & quiet zones

How Posttech Designs Tags to Align with ISO/TS 7352:2023

  • Materials: SS 304/316; Anodized Aluminium (5052/6061); Titanium (Gr.2/Gr.5) for extreme heat/chemicals and quenching.
  • Marking: Fiber-laser etching for permanent, high-contrast, abrasion-resistant symbols.
  • Code Design: Proper module size & quiet zone, moderate error correction, no clutter.
  • Verification: Batch QA with scans; optional verification report and serialization files/API.
  • Mounting: Rivet/clamp/weldable carriers preferred in severe duty; adhesives only where validated.
Note: ISO/TS 7352:2023 is proprietary to ISO. For clause-level details, purchase or access the official document.

Specification Cheat-Sheet (Buyer’s Quick Guide)

ParameterTypical ChoiceWhen to Choose
MaterialSS 304/316General industrial, corrosion resistance, outdoor duty
MaterialAluminium 5052/6061 (anodized)Lightweight panels, cabinets, meters, UV exposure
MaterialTitanium Gr.2/Gr.5Extreme heat/chemicals, thermal shock/quenching
Thickness0.5–1.0 mmLimit warpage; add stiffness for heat cycles
MarkingFiber-laser etchPermanent high-contrast code; abrasion resistant
SymbolQR / Data MatrixChoose by data length and scanner ecosystem
Quiet Zone≥ 4 modulesImproves scanning under dirt/aging
MountingRivet / clamp / weldablePreferred for heat/chemicals; adhesives if qualified

Related Compliance

For India-specific requirements on cylinders, also review the PESO 2025 QR tag mandate.

Browse our complete range of metal QR code tags or request a compliance quote below.

ISO/TS 7352:2023 — FAQs

Posttech designs metal QR plates to align with the intent of ISO/TS 7352:2023 — permanence, readability, and data integrity. We help specify the right material, marking, and mounting and can provide QA scan reports and serialization files. For definitive compliance, assess your process conditions against the official standard.

  • Stainless 304/316: general industrial, corrosion resistance, outdoor duty.
  • Anodized Aluminium: lightweight panels, cabinets, meters with UV exposure.
  • Titanium: extreme heat/chemicals, thermal shock and quenching.

Choose based on data length and your scanner ecosystem. Data Matrix is compact for small plates; QR is ubiquitous and widely supported.

Reference: ISO/TS 7352:2023 (official, paid) — get the full document from ISO for clause-level requirements.

Visit ISO.org