Plastics - Polytetrafluoroethylene (PTFE) semi-finished products - Part 2: Preparation of test specimens and determination of properties (ISO 13000-2:2021)

Kunststoffe - Polytetrafluorethylen (PTFE)-Halbzeuge - Teil 2: Herstellung von Probekörpern und Bestimmung von Eigenschaften (ISO 13000-2:2021)

Dieser Teil von ISO 13000 legt die Herstellung von Probekörpern und die Prüfverfahren für Halbzeuge aus Polytetrafluorethylen (PTFE) fest.

Plastiques - Semi-produits en polytétrafluoroéthylène (PTFE) - Partie 2: Préparation des éprouvettes et détermination des propriétés (ISO 13000-2:2021)

Polimerni materiali - Polizdelki iz politetrafluoroetilena (PTFE) - 2. del: Priprava preskušancev in ugotavljanje lastnosti (ISO 13000-2:2021)

General Information

Status
Published
Public Enquiry End Date
24-Sep-2020
Publication Date
13-Sep-2021
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
09-Sep-2021
Due Date
14-Nov-2021
Completion Date
14-Sep-2021

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SLOVENSKI STANDARD
SIST EN ISO 13000-2:2021
01-november-2021
Nadomešča:
SIST EN ISO 13000-2:2006

Polimerni materiali - Polizdelki iz politetrafluoroetilena (PTFE) - 2. del: Priprava

preskušancev in ugotavljanje lastnosti (ISO 13000-2:2021)

Plastics - Polytetrafluoroethylene (PTFE) semi-finished products - Part 2: Preparation of

test specimens and determination of properties (ISO 13000-2:2021)
Kunststoffe - Polytetrafluorethylen (PTFE)-Halbzeuge - Teil 2: Herstellung von
Probekörpern und Bestimmung von Eigenschaften (ISO 13000-2:2021)

Plastiques - Semi-produits en polytétrafluoroéthylène (PTFE) - Partie 2: Préparation des

éprouvettes et détermination des propriétés (ISO 13000-2:2021)
Ta slovenski standard je istoveten z: EN ISO 13000-2:2021
ICS:
83.140.01 Izdelki iz gume in polimernih Rubber and plastics products
materialov na splošno in general
SIST EN ISO 13000-2:2021 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN ISO 13000-2:2021
---------------------- Page: 2 ----------------------
SIST EN ISO 13000-2:2021
EN ISO 13000-2
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2021
EUROPÄISCHE NORM
ICS 83.140.01 Supersedes EN ISO 13000-2:2005
English Version
Plastics - Polytetrafluoroethylene (PTFE) semi-finished
products - Part 2: Preparation of test specimens and
determination of properties (ISO 13000-2:2021)

Plastiques - Semi-produits en polytétrafluoroéthylène Kunststoffe - Polytetrafluorethylen (PTFE)-Halbzeuge -

(PTFE) - Partie 2: Préparation des éprouvettes et Teil 2: Herstellung von Probekörpern und Bestimmung

détermination des propriétés (ISO 13000-2:2021) von Eigenschaften (ISO 13000-2:2021)

This European Standard was approved by CEN on 15 August 2021.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this

European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references

concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN

member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by

translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management

Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,

Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and

United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 13000-2:2021 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 13000-2:2021
EN ISO 13000-2:2021 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

---------------------- Page: 4 ----------------------
SIST EN ISO 13000-2:2021
EN ISO 13000-2:2021 (E)
European foreword

This document (EN ISO 13000-2:2021) has been prepared by Technical Committee ISO/TC 61 "Plastics"

in collaboration with Technical Committee CEN/TC 249 “Plastics” the secretariat of which is held by

NBN.

This European Standard shall be given the status of a national standard, either by publication of an

identical text or by endorsement, at the latest by March 2022, and conflicting national standards shall

be withdrawn at the latest by March 2022.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

This document supersedes EN ISO 13000-2:2005.

Any feedback and questions on this document should be directed to the users’ national standards

body/national committee. A complete listing of these bodies can be found on the CEN websites.

According to the CEN-CENELEC Internal Regulations, the national standards organizations of the

following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,

Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,

Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of

North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the

United Kingdom.
Endorsement notice

The text of ISO 13000-2:2021 has been approved by CEN as EN ISO 13000-2:2021 without any

modification.
---------------------- Page: 5 ----------------------
SIST EN ISO 13000-2:2021
---------------------- Page: 6 ----------------------
SIST EN ISO 13000-2:2021
INTERNATIONAL ISO
STANDARD 13000-2
Third edition
2021-08
Plastics — Polytetrafluoroethylene
(PTFE) semi-finished products —
Part 2:
Preparation of test specimens and
determination of properties
Plastiques — Semi-produits en polytétrafluoroéthylène (PTFE) —
Partie 2: Préparation des éprouvettes et détermination des propriétés
Reference number
ISO 13000-2:2021(E)
ISO 2021
---------------------- Page: 7 ----------------------
SIST EN ISO 13000-2:2021
ISO 13000-2:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021

All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved
---------------------- Page: 8 ----------------------
SIST EN ISO 13000-2:2021
ISO 13000-2:2021(E)
Contents  Page

Foreword ........................................................................................................................................................................................................................................iv

1  Scope ................................................................................................................................................................................................................................. 1

2  Normative references ...................................................................................................................................................................................... 1

3  Terms and definitions ..................................................................................................................................................................................... 2

4  Sampling ........................................................................................................................................................................................................................ 2

5  Preparation of test specimens ................................................................................................................................................................ 2

6  Testing of semi-finished PTFE products ....................................................................................................................................... 2

6.1 General ........................................................................................................................................................................................................... 2

6.2 Linear dimensions ............................................................................................................................................................................... 2

6.3 Tensile properties ................................................................................................................................................................................. 3

6.3.1 Tensile specimens ........................................................................................................................................................... 3

6.3.2 Procedure ............................................................................................................................................................................... 7

6.4 Density ........................................................................................................................................................................................................... 7

6.5 Loss in mass at 300 °C ...................................................................................................................................................................... 7

6.6 Dimensional stability — General method ....................................................................................................................... 8

6.6.1 Apparatus ............................................................................................................................................................................... 8

6.6.2 Test specimen ..................................................................................................................................................................... 8

6.6.3 Procedure ............................................................................................................................................................................... 8

6.6.4 Expression of results .................................................................................................................................................... 8

6.7 Dimensional stability — Special method for the determination of the dimensional

and the geometrical stability of thick-walled tubes ................................................................................................ 8

6.7.1 Apparatus ............................................................................................................................................................................... 8

6.7.2 Test specimen ..................................................................................................................................................................... 8

6.7.3 Procedure ............................................................................................................................................................................... 9

6.7.4 Expression of results .................................................................................................................................................... 9

6.8 Dielectric strength................................................................................................................................................................................ 9

6.9 Hardness ....................................................................................................................................................................................................... 9

6.10 Colour .............................................................................................................................................................................................................. 9

6.11 Resistance to environmental stress cracking (ESC) ................................................................................................ 9

Bibliography .............................................................................................................................................................................................................................10

© ISO 2021 – All rights reserved iii
---------------------- Page: 9 ----------------------
SIST EN ISO 13000-2:2021
ISO 13000-2:2021(E)
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

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

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 of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/

iso/ foreword .html.

This document was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 9,

Thermoplastic materials, in collaboration with the European Committee for Standardization (CEN)

Technical Committee CEN/TC 249, Plastics, in accordance with the Agreement on technical cooperation

between ISO and CEN (Vienna Agreement).

This third edition cancels and replaces the second edition (ISO 13000-2:2005), which has been

technically revised.
The main changes compared to the previous edition are as follows:
— in Clause 2, normative references have been updated;

— the former Figure 2 has been split into two figures (Figures 2 and 3) and subsequent figures have

been renumbered;

— in Figures 2 and 3, new dimensions (thickness 1,5 ± 0,25 and 1,0 ± 0,20) have been added;

— in Clause 6:
— Table 1 has been edited to compliment Figures 2 and 3;
— a new Table 2 has been added to compliment Figure 4;

— former Annex A has been changed to Bibliography, and titles for standards have been corrected.

A list of all parts in the ISO 13000 series can be found on the ISO website.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2021 – All rights reserved
---------------------- Page: 10 ----------------------
SIST EN ISO 13000-2:2021
INTERNATIONAL STANDARD ISO 13000-2:2021(E)
Plastics — Polytetrafluoroethylene (PTFE) semi-finished
products —
Part 2:
Preparation of test specimens and determination of
properties

WARNING — Persons using this document should be familiar with normal laboratory practice,

if applicable. This document does not purport to address all of the safety concerns, if any,

associated with its use. It is the responsibility of the user to establish appropriate safety and

health practices and to determine the applicability of regulatory requirements prior to use.

1  Scope

This document specifies the preparation of test specimens and gives the test methods applicable to

semi-finished products of polytetrafluoroethylene (PTFE).
2  Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. 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 527-2, Plastics — Determination of tensile properties — Part 2: Test conditions for moulding and

extrusion plastics

ISO 527-3, Plastics — Determination of tensile properties — Part 3: Test conditions for films and sheets

ISO 868, Plastics and ebonite — Determination of indentation hardness by means of a durometer (Shore

hardness)

ISO 1183 (all parts), Plastics — Methods for determining the density of non-cellular plastics

ISO 1923, Cellular plastics and rubbers — Determination of linear dimensions

ISO 2039-1, Plastics — Determination of hardness — Part 1: Ball indentation method

ISO 3611, Geometrical product specifications (GPS) — Dimensional measuring equipment: Micrometers for

external measurements — Design and metrological characteristics

ISO 22088-3, Plastics — Determination of resistance to environmental stress cracking (ESC) — Part 3:

Bent strip method

ISO 22088-4, Plastics — Determination of resistance to environmental stress cracking (ESC) — Part 4: Ball

or pin impression method

ISO 13000-1, Plastics — Polytetrafluoroethylene (PTFE) semi-finished products — Part 1: Requirements

and designation

IEC 60243-1:2013, Electrical strength of insulating materials — Test methods — Part 1: Tests at power

frequencies
© ISO 2021 – All rights reserved 1
---------------------- Page: 11 ----------------------
SIST EN ISO 13000-2:2021
ISO 13000-2:2021(E)

IEC 60243-2, Electric strength of insulating materials — Test methods — Part 2: Additional requirements

for tests using direct voltage
CIE 1931standard colorimetric system
CIE 1964standard colorimetric system
CIE Publication No 15, Colorimetry
3  Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 472 and ISO 13000-1 apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
4  Sampling

Details of procedures for sampling semi-finished products depend to a large extent on the physical

shape
...

SLOVENSKI STANDARD
oSIST prEN ISO 13000-2:2020
01-september-2020

Polimerni materiali - Polizdelki iz politetrafluoroetilena (PTFE) - 2. del: Priprava

preskušancev in ugotavljanje lastnosti (ISO/DIS 13000-2:2020)

Plastics - Polytetrafluoroethylene (PTFE) semi-finished products - Part 2: Preparation of

test specimens and determination of properties (ISO/DIS 13000-2:2020)
Kunststoffe - Polytetrafluorethylen (PTFE)-Halbzeuge - Teil 2: Herstellung von
Probekörpern und Bestimmung von Eigenschaften (ISO/DIS 13000-2:2020)

Plastiques - Semi-produits en polytétrafluoroéthylène (PTFE) - Partie 2: Préparation des

éprouvettes et détermination des propriétés (ISO/DIS 13000-2:2020)
Ta slovenski standard je istoveten z: prEN ISO 13000-2
ICS:
83.140.01 Izdelki iz gume in polimernih Rubber and plastics products
materialov na splošno in general
oSIST prEN ISO 13000-2:2020 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN ISO 13000-2:2020
---------------------- Page: 2 ----------------------
oSIST prEN ISO 13000-2:2020
DRAFT INTERNATIONAL STANDARD
ISO/DIS 13000-2
ISO/TC 61/SC 9 Secretariat: KATS
Voting begins on: Voting terminates on:
2020-07-03  2020-09-25
Plastics — Polytetrafluoroethylene (PTFE) semi-finished
products —
Part 2:
Preparation of test specimens and determination of
properties
Plastiques — Semi-produits en polytétrafluoroéthylène (PTFE) —
Partie 2: Préparation des éprouvettes et détermination des propriétés
ICS: 83.140.01
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
ISO/CEN PARALLEL PROCESSING
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 13000-2:2020(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION. ISO 2020
---------------------- Page: 3 ----------------------
oSIST prEN ISO 13000-2:2020
ISO/DIS 13000-2:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020

All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved
---------------------- Page: 4 ----------------------
oSIST prEN ISO 13000-2:2020
ISO/DIS 13000-2:2020(E)
Contents  Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2  Normative references ...................................................................................................................................................................................... 1

3  Terms and definitions .....................................................................................................................................................................................2

4  Sampling ........................................................................................................................................................................................................................2

5  Preparation of test specimens ................................................................................................................................................................2

6  Testing of semi-finished PTFE products .......................................................................................................................................2

6.1 General ........................................................................................................................................................................................................... 2

6.2 Linear dimensions ............................................................................................................................................................................... 2

6.3 Tensile properties ................................................................................................................................................................................. 2

6.3.1 Tensile specimens ........................................................................................................................................................... 2

6.3.2 Procedure ............................................................................................................................................................................... 6

6.4 Density ........................................................................................................................................................................................................... 7

6.5 Loss in mass at 300 °C ...................................................................................................................................................................... 7

6.6 Dimensional stability — General method ....................................................................................................................... 7

6.6.1 Apparatus ............................................................................................................................................................................... 7

6.6.2 Test specimen ..................................................................................................................................................................... 7

6.6.3 Procedure ............................................................................................................................................................................... 8

6.6.4 Expression of results .................................................................................................................................................... 8

6.7 Dimensional stability — Special method for the determination of the dimensional

and the geometrical stability of thick-walled tubes ................................................................................................ 8

6.7.1 Apparatus ............................................................................................................................................................................... 8

6.7.2 Test specimen ..................................................................................................................................................................... 8

6.7.3 Procedure ............................................................................................................................................................................... 8

6.7.4 Expression of results .................................................................................................................................................... 9

6.8 Electrical properties ........................................................................................................................................................................... 9

6.8.1 Dielectric strength (electric strength) ........................................................................................................... 9

6.9 Hardness ....................................................................................................................................................................................................... 9

6.10 Colour .............................................................................................................................................................................................................. 9

6.11 Resistance to environmental stress cracking (ESC) ................................................................................................ 9

Annex A (informative) Other standards relating to testing semi-finished products of PTFE ................10

© ISO 2020 – All rights reserved iii
---------------------- Page: 5 ----------------------
oSIST prEN ISO 13000-2:2020
ISO/DIS 13000-2:2020(E)
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

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.

The main task of technical committees is to prepare International Standards. Draft International

Standards adopted by the technical committees are circulated to the member bodies for voting.

Publication as an International Standard requires approval by at least 75 % of the member bodies

casting a vote.

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.

ISO 13000-2 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 9,

Thermoplastic materials.

This third edition cancels and replaces the second edition (ISO 13000-2: 2005), which has been

technically revised.

ISO 13000 consists of the following parts, under the general title Plastics — Polytetrafluoroethylene

(PTFE) semi-finished products:
— Part 1: Requirements and designation
— Part 2: Preparation of test specimens and determination of properties
iv © ISO 2020 – All rights reserved
---------------------- Page: 6 ----------------------
oSIST prEN ISO 13000-2:2020
DRAFT INTERNATIONAL STANDARD  ISO/DIS 13000-2:2020(E)
Plastics — Polytetrafluoroethylene (PTFE) semi-finished
products —
Part 2:
Preparation of test specimens and determination of
properties

WARNING — Persons using this document should be familiar with normal laboratory practice,

if applicable. This document does not purport to address all of the safety concerns, 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 requirements.
1 Scope

This part of ISO 13000 specifies the preparation of test specimens and gives the test methods applicable

to semi-finished products of polytetrafluoroethylene (PTFE).
2  Normative references

The following referenced documents are indispensable for the application of this document. 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 527-2, Plastics — Determination of tensile properties — Part 2: Test conditions for moulding and

extrusion plastics

ISO 527-3, Plastics — Determination of tensile properties — Part 3: Test conditions for films and sheets

ISO 868, Plastics and ebonite — Determination of indentation hardness by means of a durometer (Shore

hardness)

ISO 1183 (all parts), Plastics — Methods for determining the density of non-cellular plastics

ISO 1923, Cellular plastics and rubbers — Determination of linear dimensions

ISO 2039-1, Plastics — Determination of hardness — Part 1: Ball indentation method

ISO 3611, Geometrical product specifications (GPS) — Dimensional measuring equipment: Micrometers for

external measurements — Design and metrological characteristics

ISO 4599, Plastics — Determination of resistance to environmental stress cracking (ESC) — Bent strip method

ISO 4600, Plastics — Determination of environmental stress cracking (ESC) — Ball or pin impression method

ISO 13000-1, Plastics — Polytetrafluoroethylene (PTFE) semi-finished products — Part 1: Requirements

and designation

IEC 60243-1, Electrical strength of insulating materials — Part 1: Tests at power frequencies

IEC 60243-2, Electric strength of insulating materials — Part 2: Additional requirements for tests using

direct voltage
© ISO 2020 – All rights reserved 1
---------------------- Page: 7 ----------------------
oSIST prEN ISO 13000-2:2020
ISO/DIS 13000-2:2020(E)
CIE Publication No 15, Colorimetry
3  Terms and definitions

For the purposes of this part of ISO 13000, the terms and definitions given in ISO 472 and

ISO 13000-1 apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
4  Sampling

Details of procedures for sampling semi-finished products depend to a large extent on the physical

shape of the particular material. Whenever feasible, the materials shall be sampled. Sampling shall be

statistically adequate to satisfy the requirements of the test method concerned.
5  Preparation of test specimens

The specimens used for testing shall be taken directly from or shall be machined from the semi-finished

product without other treatment. Thus, conversion of a semi-finished product into a test specimen by

any moulding procedure is not permitted. Where applicable, ISO standards shall be followed for the

preparation of test specimens. In some instances, special procedures are required that are described

either in the general discussion or in the method.
6  Testing of semi-finished PTFE products
6.1  General

Properties required for specification purposes shall be determined in accordance with the International

Standards referenced in this part of ISO 13000 or the procedures given in this part of ISO 13000. For

the determination of density, tensile properties, hardness and electrical properties, condition the test

specimens at 23 °C ± 2 °C for a period of at least 4 h prior to test. The other tests require no conditioning.

Annex A provides a list of other standards relating to testing semi-finished products of PTFE.

6.2  Linear dimensions

These shall be determined by the procedures provided in ISO 1923 for cellular plastics.

6.3  Tensile properties
6.3.1  Tensile specimens
6.3.1.1  General

The appropriate type of test specimen shall be chosen from those given in 6.3.1.2 to 6.3.1.5. At least

three test specimens shall be prepared from the sample and three specimens shall be tested.

NOTE Test specimens prepared from moulded basic shapes, rods or tubes conforming to 6.3.1.2 are likely

to give results similar to those obtained with test specimens prepared from the same product but conforming to

6.3.1.3.
2  © ISO 2020 – All rights reserved
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oSIST prEN ISO 13000-2:2020
ISO/DIS 13000-2:2020(E)

When testing extruded products, the test specimens shall be cut parallel to the axis of extrusion so that,

as far as possible, each test specimen represents a different section along the axis and a different area of

the cross-section. When testing skived tape, skived sheet or skived film, the test specimens shall be cut

perpendicular to the direction in which the pressure was applied when moulding the billet from which

the product was skived. If this direction is not known, two sets of test specimens shall be prepared and

tested, the test specimens in one set being cut at 90° to those in the other set and the mean result shall

be calculated from the higher set of values (indicating, typically, the direction perpendicular to the axis

of applied pressure). This procedure ensures a uniform way of reporting test results. The micro-tensile

test specimen (see 6.3.1.3) is used most commonly for PTFE products.
6.3.1.2  Turned dumb-bell test specimens

The test specimens shall be turned so that their dimensions are in the ratios given in Figure 1, and so

that the shape is as shown in Figure 1. The value of the larger diameter (D) shall be 7

...

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