ISO 19095-4:2015

Plastics - Evaluation of the adhesion interface performance in plastic-metal assemblies - Part 4: Environmental conditions for durability

ISO 19095-4:2015 specifies the environmental conditions to evaluate the durability for the adhesion interface performance in plastic-metal assemblies.

Plastiques — Évaluation des performances de l'interface d'adhérence dans les assemblages plastique-métal — Partie 4: Conditions environnementales pour la durabilité

General Information

• Status: Published
• Publication Date: 02-Aug-2015
• ICS: 83.180 - Adhesives
• Technical Committee: ISO/TC 61/SC 11 - Products
• Drafting Committee: ISO/TC 61/SC 11 - Products
• Current Stage: 9093 - International Standard confirmed
• Start Date: 08-Dec-2025
• Completion Date: 13-Dec-2025

Relations

• Consolidated By: ISO 128-2:2020 - Technical product documentation (TPD) - General principles of representation - Part 2: Basic conventions for lines
• Effective Date: 06-Jun-2022

Overview

ISO 19095-4:2015 - "Plastics - Evaluation of the adhesion interface performance in plastic‑metal assemblies - Part 4: Environmental conditions for durability" defines the environmental test conditions used to assess the long‑term durability of adhesive interfaces in plastic‑to‑metal assemblies. The part is focused on how environmental stressors (temperature, humidity, salt mist, mechanical fatigue, etc.) affect adhesion performance and provides standardized procedures for generating comparable, traceable durability data.

Key topics and technical requirements

• Scope and purpose: Specifies environmental conditions and sequences to evaluate adhesion interface durability in plastic‑metal joints.
• Test specimen: Refers to ISO 19095‑2 for specimen form and ISO 19095‑3 for specimen condition; specimens are conditioned per ISO 19095‑1 prior to testing.
• Temperature dependence test: Strength measured across defined temperature groups (for example −40 ±3 °C up to 180 ±2 °C) after 10 minutes at each temperature to produce a strength–temperature curve.
• Thermal shock test: Repeated cycles between low (e.g., −40 ±3 °C) and higher preset temperatures (classification examples include 80 °C, 120 °C, 150 °C) with defined exposure times and checkpoints after 10, 50, 100, 200, 500, 1 000 cycles.
• Temperature/humidity cyclic and high temperature/high humidity tests: Controlled cyclic exposure to alternations of temperature and relative humidity to simulate real‑world aging.
• Salt mist test: Informed by IEC 60068‑2‑11 to evaluate corrosion‑related degradation at the interface.
• Fatigue testing: Defines shear stress parameters (τ, τmax, τmin, τm, τa), service life (N), SN curves and methods to determine fatigue limit or limit of endurance for bonded interfaces.
• Reporting and data methods: Includes presentation of results, and normative annexes covering the staircase (Dixon & Mood) method and a data reclassification method for statistical treatment.

Practical applications and users

ISO 19095‑4 is relevant for:

• Materials engineers and adhesion specialists evaluating plastic‑metal bonding systems.
• OEMs in automotive, aerospace, rail and consumer products that use hybrid structures.
• Test laboratories and quality assurance teams performing durability qualification and comparative assessments.
• Product developers assessing design reliability where environmental exposures (thermal cycling, humidity, salt corrosion, mechanical fatigue) can compromise joint integrity.

Benefits include standardized durability data, improved comparability across materials and treatments, and guidance for service‑life estimation and design validation.

Related standards

• ISO 19095‑1:2015 - Guidelines for the approach
• ISO 19095‑2 - Test specimens
• ISO 19095‑3 - Test methods
• ISO 472 - Plastics - Vocabulary
• IEC 60068‑2‑11 - Salt mist testing

Note: Users should follow normal laboratory safety practices and proper waste disposal as stated in the standard.

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 19095-4
First edition
2015-08-01
Plastics — Evaluation of the adhesion
interface performance in plastic-metal
assemblies —
Part 4:
Environmental conditions for
durability
Plastiques — Évaluation des performances de l’interface d’adhérence
dans les assemblages plastique-métal —
Partie 4: Conditions environnementales pour la durabilité
Reference number
©
ISO 2015
© ISO 2015, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
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ii © ISO 2015 – All rights reserved

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Test specimen . 4
4.1 Form of test specimen. 4
4.2 Condition of test specimen . 4
5 Test procedure . 4
5.1 Temperature dependence test . 4
5.1.1 Apparatus . 4
5.1.2 Test procedure . 5
5.1.3 Presentation of result . 5
5.2 Thermal shock test . 5
5.2.1 Apparatus . 5
5.2.2 Test procedure . 5
5.2.3 Presentation of result . 6
5.3 Temperature/Humidity cyclic test . 6
5.3.1 Apparatus . 6
5.3.2 Test procedure . 6
5.3.3 Presentation of result . 7
5.4 High temperature and high humidity test . 7
5.4.1 Apparatus . 7
5.4.2 Test procedure . 7
5.4.3 Presentation of result . 8
5.5 Salt mist test . 8
5.5.1 Apparatus . 8
5.5.2 Test procedure . 8
5.5.3 Presentation of result . 8
5.6 Fatigue test . 8
5.6.1 Principle . 8
5.6.2 General conditions . 8
5.6.3 Apparatus . 8
5.6.4 Test procedure . 9
5.7 Report . 9
Annex A (normative) Staircase method (or Dixon and Mood’s method ) .10
Annex B (normative) Data reclassification method .12
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
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ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical
Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO/TC 61, Plastics, Subcommittee SC 11, Products.
ISO 19095 consists of the following parts, under the general title Plastics — Evaluation of the adhesion
interface performance in plastic-metal assemblies:
—Part 1: Guidelines for the approach
—Part 2: Test specimens
—Part 3: Test methods
—Part 4: Environmental conditions for durability
iv © ISO 2015 – All rights reserved

Introduction
Structures of heterogeneous materials are being manufactured in the automobiles and aerospace
industry sectors where higher safety margins are required.
The existing test methods are not appropriate because the evaluation of the adhesive interface is
difficult as the polymer material has a relatively low mechanical strength and therefore fractures
outside the joints. Therefore, it is necessary to develop a methodology for the evaluation of the adhesive
interfaces.
A test method to evaluate accurately the adhesion interface performance or standardization of long-
term evaluation under harsh environments is also necessary.
The method in ISO 19095 is intended to ensure that the integrity of the joint is realized through the
interface and that traceability of the value improves the data comparison.
This part of ISO 19095 defines the conditions to evaluate the long-term durability.
INTERNATIONAL STANDARD ISO 19095-4:2015(E)
Plastics — Evaluation of the adhesion interface
performance in plastic-metal assemblies —
Part 4:
Environmental conditions for durability
SAFETY STATEMENT — Persons using this part of ISO 19095 should be familiar with normal
laboratory practice, if applicable. This part of ISO 19095 does not purport to address all of the
safety problems, if any, associated with its use. It is the responsibility of the user to establish
appropriate safety and health practices and to ensure compliance with any regulatory
conditions. It is recognized that some of the materials permitted in this part of ISO 19095 might
have a negative environmental impact. As technological advances lead to more acceptable
alternatives for such materials, they will be eliminated to the greatest extent possible. At the end
of the test, care should be taken to dispose of all waste in an appropriate manner in accordance
with local regulations.
1 Scope
This part of ISO 19095 specifies the environmental conditions to evaluate the durability for the adhesion
interface performance in plastic-metal assemblies.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 472, Plastics — Vocabulary
ISO 19095-1:2015, Plastics — Evaluation of the adhesion interface performance in plastic-metal
assemblies —Part 1: Guideline for the approach
ISO 19095-2, Plastics — Evaluation of the adhesion interface performance in plastic-metal assemblies —
Part 2: Test specimens
ISO 19095-3, Plastics — Evaluation of the adhesion interface performance in plastic-metal assemblies —
Part 3: Test methods
IEC 60068-2-11, Basic environmental testing procedures — Part 2-11: Tests — Test Ka: Salt mist
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 472 and the following apply.
3.1
shear stress
τ
stress determined by dividing the force by the bonded surface area
Note 1 to entry: It is expressed in megapascals (MPa).
3.2
static shear stress
τ
R
average static shear stress at rupture as determined by ISO 4587
Note 1 to entry: It is expressed in megapascals (MPa).
3.3
stress cycle
smallest part of the stress/time function which is repeated at regular intervals
Note 1 to entry: It is of sinusoidal form (see Figure 1) with undulating shear.
Note 2 to entry: Cyclic stress can be considered to be the superposition of an alternating stress on a static stress
which is the mean stress.
Figure 1 — Fatigue stress cycle
3.4
maximum stress
τ
max
greatest algebraic value reached at regular intervals by the stress
Note 1 to entry: It is expressed in megapascals (MPa).
3.5
minimum stress
τ
min
smallest algebraic value reached at regular intervals by the stress
Note 1 to entry: This stress shall always be positive and is expressed in megapascals (MPa).
3.6
mean stress
τ
m
algebraic mean of the maximum and minimum stresses
Note 1 to entry: It is expressed as:
2 © ISO 2015 – All rights reserved

ττ+
max min
τ =
m
3.7
stress amplitude
τ
a
alternating stress equal to half the algebraic difference between the maximum and
minimum stresses
Note 1 to entry:
...