EN ISO 2818:2019
(Main)Plastics - Preparation of test specimens by machining (ISO 2818:2018)
Plastics - Preparation of test specimens by machining (ISO 2818:2018)
This document establishes the general principles and procedures to be followed when machining and notching test specimens from compression-moulded and injection-moulded plastics, extruded sheets, plates and partially finished or wholly finished products.
In order to establish a basis for reproducible machining and notching conditions, the following general standardized conditions are applied. It is assumed, however, that the exact procedures used are selected or specified by the relevant material specification or by the standards on the particular test methods. If sufficiently detailed procedures are not thus specified, the interested parties agree upon the conditions to be used.
Kunststoffe - Herstellung von Probekörpern durch mechanische Bearbeitung (ISO 2818:2018)
Dieses Dokument legt die allgemeinen Grundsätze und Verfahren fest, die zu befolgen sind, wenn durch mechanische und zerteilende Bearbeitung von aus durch Formpressen und Spritzgießen gefertigten Kunst¬stoffen, extrudierten Tafeln, Platten sowie Halbfertig oder Fertigerzeugnissen Probekörper hergestellt werden.
Um eine Grundlage für reproduzierbare Bedingungen für die mechanische und zerteilende Bearbeitung zu schaffen, werden die folgenden allgemeinen genormten Bedingungen angewendet. Es wird jedoch davon ausgegangen, dass die genauen angewendeten Verfahren anhand der entsprechenden Werkstoff-Spezifikation oder Normen zu den bestimmten Prüfverfahren ausgewählt oder festgelegt werden. Wenn keine ausreichend detaillierten Verfahren auf diese Weise festgelegt sind, vereinbaren die interessierten Parteien die anzuwendenden Bedingungen.
Plastiques - Préparation des éprouvettes par usinage (ISO 2818:2018)
Le présent document établit les principes et modes opératoires généraux à suivre lors de l'usinage et de la production des entailles sur les éprouvettes produites à partir de plastiques moulés par compression et par injection, de feuilles extrudées, de plaques, et de produits partiellement ou entièrement finis.
Il convient d'appliquer les conditions normalisées générales suivantes pour établir une base permettant d'obtenir des conditions reproductibles en matière d'usinage et de production d'entailles. On présume, cependant, que les modes opératoires exacts à utiliser sont choisis ou précisés dans les spécifications relatives à la matière concernée ou dans les normes afférentes aux méthodes d'essai particulières. Si les modes opératoires spécifiés ne sont pas suffisamment détaillés, il est essentiel que les parties concernées s'accordent sur les conditions à utiliser.
Polimerni materiali - Strojna priprava preskušancev (ISO 2818:2018)
Ta dokument določa splošna načela in postopke pri strojni obdelavi in
izrezovanju preskušancev iz polimernih materialov, oblikovane z vbrizgavanjem ali stiskanjem, ekstrudiranih plošč,
lamel in nedokončanih ali končnih izdelkov.
Za vzpostavitev podlage za ponovljive pogoje strojne obdelave in izrezovanja se uporabljajo naslednji splošni
standardizirani pogoji. Kljub temu se predpostavlja, da so uporabljeni postopki izbrani
ali določeni z ustrezno specifikacijo materiala ali s standardi za posamezno preskusno metodo. Če
na ta način niso določeni dovolj podrobni postopki, se zainteresirane strani dogovorijo o pogojih
uporabe.
General Information
Relations
Overview
EN ISO 2818:2019 - Plastics: Preparation of test specimens by machining (ISO 2818:2018) establishes general principles and procedures for machining and notching test specimens from plastics. The standard applies to specimens taken from compression‑moulded and injection‑moulded parts, extruded sheets and plates, and partially or wholly finished products. It defines a common basis for reproducible machining conditions so that mechanical test results are comparable and representative.
Key topics and requirements
- Scope and intent: Defines agreed machining practices when specific material or test-method standards do not prescribe procedures.
- Terminology and definitions: Standardized terms for machining operations (milling, sawing, slicing, broaching, stamping, lathing, planing), and key parameters such as tool radius (R), cutting speed (vc), feed speed (vf), feed path (λ) and cutting depth (a).
- Machinery and tools: Guidance on choice and characteristics of milling cutters, circular/band saws, abrasive discs, tubular cutters, lathes, planing machines, stamping and broaching tools.
- Specimen shapes and states: Recommendations for preparing dumb‑bell, rectangular, disc‑shaped and other specimen geometries by appropriate cutting or stamping.
- Notching procedures: Methods for producing notches in finished specimens (e.g., milling, broaching) to ensure consistent stress concentrators for fracture or impact testing.
- Procedure and reproducibility: Emphasis on controlling machining variables and documenting conditions to ensure reproducible surface finish and internal structure that can affect test results.
- Test reporting: Information to be recorded in test reports to capture machining conditions and tool parameters.
Applications and users
EN ISO 2818:2019 is used wherever machined plastic specimens are required for mechanical testing:
- Test laboratories and quality control labs preparing tensile, impact, flexural or fracture specimens.
- Plastics manufacturers and processors (injection moulding, extrusion, compression moulding) establishing in‑house test protocols.
- Material developers and R&D teams evaluating additives, grades or new formulations.
- Standards writers and conformity assessors who need consistent specimen preparation rules. The standard helps ensure that surface finish and machining-induced changes do not invalidate comparative mechanical test results.
Related standards
- ISO 2818:2018 (identical international text)
- ISO 3002‑1 and ISO 3855 (machining terminology and tool geometry references cited)
- ISO 21950 and ISO 6104 (abrasive products and disc guidance referenced)
- EN adoption: CEN endorsement as EN ISO 2818:2019, superseding earlier editions
Keywords: EN ISO 2818:2019, plastics specimen preparation, machining, milling, sawing, notching, injection‑moulded plastics, extrusion, test specimen reproducibility, surface finish.
Frequently Asked Questions
EN ISO 2818:2019 is a standard published by the European Committee for Standardization (CEN). Its full title is "Plastics - Preparation of test specimens by machining (ISO 2818:2018)". This standard covers: This document establishes the general principles and procedures to be followed when machining and notching test specimens from compression-moulded and injection-moulded plastics, extruded sheets, plates and partially finished or wholly finished products. In order to establish a basis for reproducible machining and notching conditions, the following general standardized conditions are applied. It is assumed, however, that the exact procedures used are selected or specified by the relevant material specification or by the standards on the particular test methods. If sufficiently detailed procedures are not thus specified, the interested parties agree upon the conditions to be used.
This document establishes the general principles and procedures to be followed when machining and notching test specimens from compression-moulded and injection-moulded plastics, extruded sheets, plates and partially finished or wholly finished products. In order to establish a basis for reproducible machining and notching conditions, the following general standardized conditions are applied. It is assumed, however, that the exact procedures used are selected or specified by the relevant material specification or by the standards on the particular test methods. If sufficiently detailed procedures are not thus specified, the interested parties agree upon the conditions to be used.
EN ISO 2818:2019 is classified under the following ICS (International Classification for Standards) categories: 83.080 - Plastics; 83.080.01 - Plastics in general. The ICS classification helps identify the subject area and facilitates finding related standards.
EN ISO 2818:2019 has the following relationships with other standards: It is inter standard links to EN ISO 2818:1996. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase EN ISO 2818:2019 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CEN standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-marec-2019
1DGRPHãþD
SIST EN ISO 2818:2000
Polimerni materiali - Strojna priprava preskušancev (ISO 2818:2018)
Plastics - Preparation of test specimens by machining (ISO 2818:2018)
Kunststoffe - Herstellung von Probekörpern durch mechanische Bearbeitung (ISO
2818:2018)
Plastiques - Préparation des éprouvettes par usinage (ISO 2818:2018)
Ta slovenski standard je istoveten z: EN ISO 2818:2019
ICS:
83.080.01 Polimerni materiali na Plastics in general
splošno
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 2818
EUROPEAN STANDARD
NORME EUROPÉENNE
January 2019
EUROPÄISCHE NORM
ICS 83.080.01 Supersedes EN ISO 2818:1996
English Version
Plastics - Preparation of test specimens by machining (ISO
2818:2018)
Plastiques - Préparation des éprouvettes par usinage Kunststoffe - Herstellung von Probekörpern durch
(ISO 2818:2018) mechanische Bearbeitung (ISO 2818:2018)
This European Standard was approved by CEN on 24 December 2018.
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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, 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
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 2818:2019 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 2818:2019) 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 July 2019, and conflicting national standards shall be
withdrawn at the latest by July 2019.
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 2818:1996.
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, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 2818:2018 has been approved by CEN as EN ISO 2818:2019 without any modification.
INTERNATIONAL ISO
STANDARD 2818
Fourth edition
2018-12
Plastics — Preparation of test
specimens by machining
Plastiques — Préparation des éprouvettes par usinage
Reference number
ISO 2818:2018(E)
©
ISO 2018
ISO 2818:2018(E)
© ISO 2018
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 2018 – All rights reserved
ISO 2818:2018(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Test specimens. 5
4.1 Shape and state of the test specimens . 5
4.2 Preparation of test specimens . 6
5 Machinery and tools . 6
5.1 General . 6
5.2 Milling cutters . 6
5.3 Slicing or sawing machines . 6
5.4 Tubular cutting machines . 6
5.5 Lathes . 7
5.6 Planing machines . 7
5.7 Stamping tools . 7
5.8 Broaching tools . 7
6 Procedure. 7
6.1 General . 7
6.2 Preparation of dumb-bell specimens . 7
6.3 Preparation of rectangular test specimens by sawing or cutting with an abrasive disc . 7
6.4 Preparation of disc-shaped test specimens . 7
6.5 Stamping out test specimens of any shape . 8
6.6 Notching finished test specimens by milling or broaching . 8
7 Test report . 9
Bibliography .16
ISO 2818:2018(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,
Mechanical properties.
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.
This fourth edition cancels and replaces the third edition (ISO 2818:1994), of which it constitutes a
minor revision to update the references in Clause 2. It also incorporates the Technical Corrigendum
ISO 2818:1994/Cor 1:2007.
iv © ISO 2018 – All rights reserved
ISO 2818:2018(E)
Introduction
The preparation of test specimens by machining influences the finished surfaces and, in some cases,
even the internal structure of the specimens. Since test results are strongly dependent on both of these
parameters, exact definitions of tools and machining conditions are required for reproducible test
results with machined specimens.
INTERNATIONAL STANDARD ISO 2818:2018(E)
Plastics — Preparation of test specimens by machining
1 Scope
This document establishes the general principles and procedures to be followed when machining and
notching test specimens from compression-moulded and injection-moulded plastics, extruded sheets,
plates and partially finished or wholly finished products.
In order to establish a basis for reproducible machining and notching conditions, the following general
standardized conditions are applied. It is assumed, however, that the exact procedures used are selected
or specified by the relevant material specification or by the standards on the particular test methods. If
sufficiently detailed procedures are not thus specified, the interested parties agree upon the conditions
to be used.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions 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/
3.1 Milling
NOTE In this machining operation, the tool has a circular primary motion and the workpiece a suitable feed
motion. The axis of rotation of the primary motion retains its position with respect to the tool, independently
of the feed motion (see ISO 3855). Complete dumb-bell and rectangular test specimens, as well as notches in
finished specimens, may be prepared by milling.
3.1.1 Geometry (see ISO 3002-1 and Figure 1)
NOTE Only a few details of the exact geometrical conditions of the milling tool and its position with respect
to the workpiece given in ISO 3002-1 are relevant to this document.
3.1.1.1
tool-cutting-edge angle
α
r
angle between the tool-cutting-edge plane, P , and the assumed working plane, P , measured in the tool
s f
back plane, P
r
3.1.1.2
tool back clearance
α
p
angle between the flank, A , of the cutter and the tool-cutting-edge plane, P , measured in the tool back
α s
plane, P
p
ISO 2818:2018(E)
3.1.1.3
tool side clearance
α
f
angle between the flank A of the cutter and the tool-cutting-edge plane P , measured in the assumed
α s
working plane, P
f
3.1.1.4
tool radius
R
distance between the axis of the circular primary motion of the tool and its cutting edge
3.1.1.5
number of cutting teeth
z
number of cutting edges on the outer periphery of the rotating milling tool
3.1.2 Tool and workpiece motions (see ISO 3002-1 and Figure 2)
3.1.2.1
rotational speed of tool
n
speed of the circular primary motion of the tool
Note 1 to entry: The rotational speed of tool is expressed in revolutions per minute (r/min).
3.1.2.2
cutting speed
v
c
instantaneous velocity of the primary motion of a selected point on the cutting edge relative to the
workpiece
Note 1 to entry: The relationship between v and n is given by the formula v = n·2πR.
c c
Note 2 to entry: The cutting speed is expressed in metres per minute.
3.1.2.3
feed speed
v
f
instantaneous velocity of the feed motion of a selected point on the cutting edge relative to the
workpiece
Note 1 to entry: The feed speed is expressed in metres per minute.
3.1.2.4
feed path
λ
distance at any given point on the surface of the workpiece covered during the time between two
successive cutting operations
Note 1 to entry: The feed path is given by the formula λ = v /z·n.
f
Note 2 to entry: The feed path is expressed in millimetres.
3.1.2.5
cutting depth
a
distance between the surfaces of the workpiece before and after one complete milling run
Note 1 to entry: The cutting depth is expressed in millimetres.
2 © ISO 2018 – All rights reserved
ISO 2818:2018(E)
3.2 Cutting of rectangular test specimens
NOTE In this machining operation, rectangular test specimens are cut by means of a circular or band saw,
made from hardened steel or coated with diamond or cubic boron nitride powder, or cut with the aid of an
abrasive disc of which the cutting edge may be coated with diamond or boron nitride powder. For further details
on abrasive discs and abrasive products, see ISO 21950 and ISO 6104.
3.2.1 Geometry
3.2.1.1
tool radius
R
distance between the rotary axis of a circular saw or an abrasive disc and the cutting edges of the tool
Note 1 to entry: The tool radius is expressed in millimetres.
3.2.1.2
number of cutting teeth
z
number of cutting teeth on the periphery of a circular saw
3.2.2 Tool and workpiece motions
3.2.2.1
rotational speed of tool
n
speed of rotation of a circular saw or an abrasive disc
Note 1 to entry: Rotational speed of tool is expressed in revolutions per minute (r/min).
3.2.2.2
cutting speed
v
c
instantaneous velocity of the cutting tip of a saw tooth, or of a selected point on the cutting edge of an
abrasive disc, relative to the workpiece
Note 1 to entry: For a circular saw or an abrasive disc, the relationship between v and n is given by the formula
c
v = n·2πR.
c
Note 2 to entry: The cutting speed is expressed in metres per minute.
3.2.2.3
feed speed
v
f
instantaneous velocity of the tool feed parallel to the saw or disc plane and perpendicular to the cutting
direction relative to the workpiece
Note 1 to entry: The feed speed is expressed in metres per minute.
3.3 Cutting of disc-shaped test specimens (see Figure 4)
NOTE In this machining operation, disc-shaped test specimens are cut from sheet material with the aid
of a circular cutter with a saw-toothed edge of hardened steel or which may be coated with diamond or cubic
boron nitride powder. The test specimens may also be cut by means of a milling cutter with one or more teeth, as
described in 3.1, which moves in a circular orbit. Furthermore, the test specimens may also be cut from a roughly
preshaped pack of individual sheets with the aid of a turning lathe.
ISO 2818:2018(E)
3.3.1 Geometry
3.3.1.1
tool radius
R
distance between the rotary axis of the circular cutter and the inner limit of the cutting edge
Note 1 to entry: The tool radius is equal to the radius of the finished test specimen. It is expressed in millimetres.
3.3.1.2
number of cutting teeth
z
number of teeth on the sawtooth cutting edge of a circular cutter
Note 1 to entry: If a lathe is used for cutting circular test specimens, the geometrical definitions of the cutting
tool are the same as those given in 3.1.
3.3.2 Tool and workpiece motions
3.3.2.1
rotational sp
...
La norme EN ISO 2818:2019 est un document fondamental qui établit des principes et des procédures généraux pour l'usinage et le rainurage d'échantillons d'essai issus de plastiques moulés par compression et par injection, ainsi que de feuilles extrudées, de plaques et de produits partiellement ou entièrement finis. Cette norme est cruciale pour garantir la réplication des conditions d'usinage et de rainurage, offrant ainsi une base solide aux laboratoires et aux industries travaillant avec des plastiques. Parmi les forces notables de cette norme, l'uniformité qu'elle apporte aux conditions d'essai est primordiale. En définissant des conditions standardisées, elle permet non seulement de minimiser la variabilité des résultats mais aussi de favoriser des échanges harmonisés entre différentes entités engagées dans des essais de matériaux. Cela est particulièrement pertinent dans un contexte où la comparabilité des résultats est essentielle pour le développement de produits et la certification. De plus, la norme comporte des dispositions qui soulignent l'importance de suivre les spécifications des matériaux pertinents ou des normes particulières relatives aux méthodes d'essai. Cela garantit que même dans le cadre d'instructions spécifiques, les principes d'usinage et de rainurage restent cohérents. La flexibilité offerte aux parties intéressées pour convenir des conditions d'essai en cas de manque de détails dans les procédures démontre également la pertinence de la norme face à la diversité des plastiques utilisés dans l'industrie. En somme, la norme EN ISO 2818:2019 se distingue par sa capacité à établir un cadre standardisé pour le traitement des plastiques, ce qui contribue à la fiabilité et à l'harmonisation des essais. Elle est particulièrement pertinente pour les acteurs du secteur cherchant à optimiser leurs processus de test et à assurer la conformité des produits finis.
EN ISO 2818:2019는 플라스틱 시험 샘플을 기계 가공 및 노칭하여 준비하는 데 필요한 일반 원칙과 절차를 설정하는 문서입니다. 이 표준의 범위는 압축 성형 및 사출 성형된 플라스틱, 압출 시트, 판 및 부분적으로 가공된 또는 완전히 가공된 제품에서 시험 샘플을 가공하는 특정 방법을 상세히 설명합니다. 이 문서는 기계 가공과 노칭을 위한 재현 가능한 조건을 설정하기 위해 일반화된 표준화 조건들을 적용합니다. 이는 표준화된 절차가 없을 경우, 해당 재료 사양이나 특정 시험 방법에 대한 표준에서 사용할 정확한 절차를 선택하거나 명시하는 것을 전제로 합니다. 이는 다양한 이해관계자들이 사용할 조건에 대해 합의할 수 있도록 도와주는 유연성을 제공합니다. EN ISO 2818:2019의 강점 중 하나는 다양한 플라스틱 제품에 대해 보편적인 접근 방식을 제공하면서도, 각 재료와 시험 방법에 따라 세부 사항을 조정할 수 있는 능력입니다. 이 표준은 플라스틱 제품의 테스트 과정에서의 일관성을 높이는데 기여하여, 시험 결과의 신뢰성을 보장할 수 있습니다. 또한, 이 문서는 플라스틱 산업에서 기계 가공과 관련된 연구 및 개발 노력에 필수적인 기준을 제공함으로써, 플라스틱 관련 재료의 품질을 향상시키고 산업 표준을 준수하는 데 도움을 줄 수 있습니다. EN ISO 2818:2019는 특히 플라스틱 제조업체, 연구기관 및 시험소에서 높은 활용 가치를 가지며, 기계 가공 및 노칭 작업의 표준화를 통해 향후 시험 방법 개발 및 품질 보증에 중요한 역할을 할 것입니다.
SIST EN ISO 2818:2019は、成形されたプラスチックからの試験標本の機械加工およびノッチングに関する一般原則と手順を定めた重要な文書です。この標準は、圧縮成形されたプラスチック、射出成形されたプラスチック、押出シートおよびプレート、部分的または完全に仕上げられた製品から試験標本を切削する際の標準化された条件を提供します。 この標準の強みは、再現性のある加工とノッチングの条件を確立するための一般的な標準条件を適用している点です。これにより、試験の信頼性が向上し、異なる実験室や条件下でも一貫した結果が得られることが期待されます。また、材料の仕様や特定の試験方法に基づいて選定されたまたは指定された手順に従って行われるため、柔軟性を保ちながらも科学的な厳密さを兼ね備えています。 さらに、十分に詳細な手順が指定されていない場合でも、関係者が使用する条件について合意することが求められるため、各業界や研究分野におけるニーズに応じた対応が可能です。このように、SIST EN ISO 2818:2019は、プラスチック材料の評価における信頼性と整合性を保障する不可欠な標準であり、業界内での広範な適用性を有しています。
The EN ISO 2818:2019 standard provides crucial guidelines for the preparation of test specimens through machining processes for various types of plastics, including compression-moulded and injection-moulded materials, as well as extruded sheets and plates. This document establishes comprehensive principles and procedures that must be adhered to in the machining and notching of these plastics, ensuring that test specimens are consistent and reproducible. One of the primary strengths of EN ISO 2818:2019 is its emphasis on standardized conditions for machining and notching, which lays the groundwork for reproducible results across different testing environments. By clearly defining the procedures and conditions, this standard helps to minimize variables that could otherwise affect the integrity of test results, thereby enhancing the reliability of data obtained from subsequent evaluations. Additionally, the standard is relevant for manufacturers, researchers, and quality control professionals who require uniformity in the preparation of test specimens. By outlining a common framework, it facilitates better communication and understanding among stakeholders involved in the testing process. Moreover, the document recognizes the importance of specifying procedures based on the relevant material specifications and standards specific to test methods, providing flexibility while maintaining rigor. Ultimately, the EN ISO 2818:2019 standard serves as an essential reference for ensuring that the machining processes of plastics are carried out in a consistent and scientifically valid manner, contributing significantly to the advancement of testing methodologies in the materials science field. Its relevance cannot be overstated, as proper specimen preparation is foundational to achieving accurate and actionable testing outcomes.
Die Norm EN ISO 2818:2019 bietet eine umfassende Grundlage für die Vorbereitung von Prüfstücken durch Bearbeitung, insbesondere für Kunststoffe, die durch Spritzgießen und Kompressionsformen hergestellt werden, sowie für extrudierte Platten und halb- oder fertigbearbeitete Produkte. Der Anwendungsbereich dieser Norm ist klar definiert und bildet einen wichtigen Rahmen für die Verfahrensweisen, die bei der Bearbeitung und Eintiefung von Prüfkörpern zu beachten sind. Ein wesentliches Merkmal der EN ISO 2818:2019 ist die Etablierung einheitlicher Prinzipien und Verfahren, die sicherstellen, dass die Herstellung von Prüfstücken unter reproduzierbaren Bedingungen erfolgt. Dies ist entscheidend, um die Validität der Testergebnisse zu gewährleisten und die Vergleichbarkeit der Ergebnisse zwischen verschiedenen Tests und Materialien zu erhöhen. Die Norm behandelt sowohl allgemeine Standardisierungsbedingungen als auch spezifische Anforderungen, die je nach Materialspezifikation oder den angewandten Prüfmethoden variieren können. Stärken der Norm liegen in ihrer Flexibilität und Anwendbarkeit auf verschiedene Kunststoffe und deren Herstellungsverfahren. Sie bietet eine klare Anleitung für alle Interessierten, um konsistente Bearbeitungsbedingungen zu vereinbaren, falls diese nicht durch spezifische Normen oder Materialvorgaben festgelegt sind. Dadurch fördert die Norm nicht nur die Einheitlichkeit in der Prüfung von Kunststoffen, sondern auch die Zusammenarbeit zwischen verschiedenen Parteien, die an der Entwicklung und Prüfung von Kunststoffen beteiligt sind. Insgesamt ist die EN ISO 2818:2019 von wesentlicher Bedeutung für die Kunststoffindustrie, da sie die Qualität und Zuverlässigkeit der Testdurchführung sichert und somit zur Verbesserung der Produkte und der Herstellungsprozesse beiträgt. Die Relevanz dieser Norm kann nicht hoch genug eingeschätzt werden, insbesondere in einem Markt, der zunehmend auf Qualität und Präzision angewiesen ist.
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