EN ISO 4894-1:1999

SLOVENSKI STANDARD
01-maj-2000
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Plastics - Styrene/acrylonitrile (SAN) moulding and extrusion materials - Part 1:
Designation system and basis for specifications (ISO 4894-1:1997)
Kunststoffe - Styrol/Acrylnitril (SAN)-Formmassen - Teil 1: Bezeichnungssystem und
Basis für Spezifikationen (ISO 4894-1:1997)
Plastiques - Styrene/acrylonitrile (SAN) pour moulage et extrusion - Partie 1: Systeme de
désignation et base de spécification (ISO 4894-1:1997)
Ta slovenski standard je istoveten z: EN ISO 4894-1:1999
ICS:
83.080.20 Plastomeri Thermoplastic materials
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

INTERNATIONAL
STANDARD
Third edition
1997-07-01
Plastics - Styrene/acrylonitrile (SAN)
moulding and extrusion materials -
Part 1:
Designation system and basis for
specifications
Plastiques - Styr&ne/acrylonitrile (SAN) pour moulage et extrusion -
Partie 1: Syst&me de dhsignation et base de sphcification
Reference number
IS0 4894-l :1997(E)
IS0 4894-l :1997(E)
Foreword
IS0 (the International Organization for Standardization) is a worldwide
federation of national standards bodies (IS0 member bodies). The work of
preparing International Standards is normally carried out through IS0
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. IS0
collaborates closely with the International Electrotechnical Commission
(IEC) on all matters of electrotechnical standardization.
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.
International Standard IS0 4894-1 was prepared by Technical Committee
ISO/TC 61, Plastics, Subcommittee SC 9, Thermoplastic materials.
This third edition cancels and replaces the second edition (IS0 4894-1 :I 990),
the text of which has been brought into accordance with the standard SC 9
frame text.
IS0 4894 consists of the following parts, under the general title Plastics -
Styrene/acrylonitrile (SAN) moulding and extrusion materials :
Part I: Designation system and basis for specifications
- Part 2: Preparation of test specimens and determination of properties
0 IS0 1997
All rights resewed. Unless otherwise specified, no part of this publication may be reproduced
or utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from the publisher.
llnternational Organization for Standardization
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Internet central @ iso.ch
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Printed in Switzerland
ii
INTERNATIONAL STANDARD @ IS0 IS0 4894-l :1997(E)
Plastics - Styrene/acrylonitrile (SAN) moulding and extrusion
materials -
Part 1:
Designation system and basis for specifications
1 Scope
1 .l This part of IS0 4894 establishes a system of designation for styrene/acrylonitrile thermoplastic material,
which may be used as the basis for specifications.
1.2 The types of styrene/actylonitrile plastic are differentiated from each other by a classification system based on
appropriate levels of the designatory properties
a) Vicat softening temperature
b) melt flow rate
and on information about basic polymer parameters, intended application and/or method of processing, important
properties, additives, colourants, fillers and reinforcing materials.
1.3 This part of IS0 4894 is applicable to all copolymers of styrene and/or substituted styrene having between
10 % (m/m) and 50 % (m/m) acrylonitrile.
It applies to materials ready for normal use and to materials unmodified or modified by colourants, additives, fillers,
etc.
1.4 It is not intended to imply that materials having the same designation give necessarily the same performance.
This part of IS0 4894 does not provide engineering data, performance data or data on processing conditions which
may be required to specify a material for a particular application and/or method of processing.
If such additional properties are required, they shall be determined in accordance with the test methods specified in
part 2 of this International Standard, if suitable.
1.5 In order to specify a thermoplastic material for a particular application or to ensure reproducible processing,
additional requirements may be given in data block 5 (see clause 3, introductory paragraph).
2 Normative references
The following standards contain provisions which, through reference in this text, constitute provisions of this part of
IS0 4894. At the time of publication, the editions indicated were valid. All standards are subject to revision, and
@ IS0
IS0 4894-l : 1997(E)
parties to agreements based on this part of IS0 4894 are encouraged to investigate the possibility of applying the
most recent editions of the standards indicated below. Members of IEC and IS0 maintain registers of currently valid
International Standards.
- Pat? 7: Basic polymers and their special
IS0 1043-I :I 997, Plastics - Symbols and abbreviated terms
characteristics.
IS0 1043-2:1988, Plastics - Symbols - Part 2: Fillers and reinforcing materials.
IS0 4894-2:1995, Plastics - Styrene/acryionitrile (SAN) moulding and extrusion materials - Part 2: Preparation of
test specimens and determination of properties.
3 Designation system
The designation system for thermoplastics is based on the following standardized pattern:
Designation
Identity block
Individual-item block
Description block International
(optional) Standard
Data Data Data Data Data
number
block block block block block
block
1 2 3 4 5
The designation consists of an optional description block, reading “Thermoplastics”, and an identity block
comprising the International Standard number and an individual-item block. For unambiguous designation, the
individual-item block is subdivided into 5
...