ISO 19095-2:2015

Overview

ISO 19095-2:2015 - Plastics - Evaluation of the adhesion interface performance in plastic‑metal assemblies - Part 2: Test specimens specifies the forms and preparation of test pieces used to evaluate adhesion at plastic–metal interfaces. It defines the appropriate specimen types and the information to report so that interface performance tests are consistent and traceable. ISO 19095-2 is one part of the ISO 19095 series (Parts 1–4) addressing methodology, test methods and environmental durability.

Key topics and requirements

• Scope: Specifies test specimens for evaluating adhesion interface performance in plastic‑metal assemblies where conventional methods may be inadequate.
• Specimen types: Defines standard geometries and dimensions (illustrated in the standard) for:
  • Type A - butt welded test specimens
  • Type B - overlapped test specimens
  • Type C - peeling test specimens (flexible metal + plastic, with a defined unbonded length)
  • Type D - specimens for sealing properties (with an Annex A alternative D.2 overlapped designs if D cannot be manufactured)
• Surface preparation: Requires surface preparation in accordance with ISO 17212 (guidelines for surface treatment of metals and plastics prior to adhesive bonding); any deviations must be recorded.
• Preparation methods: Cross‑references existing moulding standards for specimen manufacture, including ISO 293, ISO 294‑1/2, ISO 295, ISO 10724‑1/2 depending on material and moulding method.
• Reporting requirements: Test reports must include specimen type and size, preparation and testing conditions, surface treatment, number of tests and specimens, measured characteristic values (averages), dates, processing methods and other relevant details (items a–m in the standard).

Applications and users

ISO 19095-2 is applicable where reliable evaluation of plastic–metal adhesion is critical, such as:

• Automotive and aerospace component manufacturers using hybrid plastic‑metal structures
• Materials engineers and adhesion specialists developing bonded assemblies
• Test laboratories performing adhesion, peel and sealing tests
• R&D teams validating surface treatments, welding or bonding processes
• Quality assurance and regulatory compliance teams comparing interface performance across suppliers

Using standardized test specimens improves reproducibility, traceability and comparability of adhesion test results across labs and projects.

Related standards (for implementation)

• ISO 19095-1: Guidelines for the approach
• ISO 19095-3: Test methods
• ISO 19095-4: Environmental conditions for durability
• ISO 17212: Surface preparation of metals and plastics prior to adhesive bonding
• ISO 293, ISO 294-1/2, ISO 295, ISO 10724-1/2: Specimen moulding and preparation standards

Keywords: ISO 19095-2, test specimens, plastic‑metal assemblies, adhesion interface, butt welded, overlapped specimens, peeling test, sealing properties, surface preparation, ISO standards.