SIST EN ISO 10306:1999
(Main)Textiles - Cotton fibres - Evaluation of maturity by the air flow method (ISO 10306:1993)
Textiles - Cotton fibres - Evaluation of maturity by the air flow method (ISO 10306:1993)
Specifies a method for the evaluation of the maturity of loose randomized cotton fibres by measuring the resistance to air flow of a plug of cotton fibres under two prescribed conditions. The method is applicable to cotton taken at random from bales. Laps and slivers or other sources of lint cotton may be tested, however results may differ if fibres are taken from bales.
Textilien - Baumwollfasern - Bewertung der Reife durch das Luftstrom-Prüfverfahren (ISO 10306:1993)
Diese Internationale Norm bestimmt ein Prüfverfahren zur Bewertung der Reife loser, ungeordneter Baumwollfasern durch Messen des Luftstromwiderstands eines Baumwollfaserpfropfens unter zwei vorgeschriebenen Bedingungen. Die Methode ist anwendbar auf Baumwolle, die als beliebige Stichprobe von Ballen entnommen wurde. Es können Faserwickel und faserbänder oder Baumwolle sonstiger Herkunftgeprüft werden, jedoch können die Ergebnisse unterschiedlich sein, wenn Fasernvon Ballen entnommen werden.
Textiles - Fibres de coton - Evaluation de la maturité par la méthode a courant d'air (ISO 10306:1993)
La présente Norme internationale prescrit une méthode pour l'évaluation de la maturité de fibres de coton prélevées au hasard en mesurant la résistance au courant d'air d'un tampon de fibres de coton dans deux conditions prédéfinies. La méthode est applicable à du coton prélevé au hasard à partir de balles. Il est possible de contrôler des nappes et des mèches ou d'autres sources de coton égrainé; cependant, les résultats peuvent être différents par rapport aux fibres prélevées sur balles.
Tekstilije - Bombažna vlakna - Ocenjevanje zrelosti z metodo zračnega pretoka (ISO 10306:1993)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 10306:1999
01-marec-1999
7HNVWLOLMH%RPEDåQDYODNQD2FHQMHYDQMH]UHORVWL]PHWRGR]UDþQHJDSUHWRND
,62
Textiles - Cotton fibres - Evaluation of maturity by the air flow method (ISO 10306:1993)
Textilien - Baumwollfasern - Bewertung der Reife durch das Luftstrom-Prüfverfahren
(ISO 10306:1993)
Textiles - Fibres de coton - Evaluation de la maturité par la méthode a courant d'air (ISO
10306:1993)
Ta slovenski standard je istoveten z: EN ISO 10306:1995
ICS:
59.060.10 Naravna vlakna Natural fibres
SIST EN ISO 10306:1999 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 10306:1999
INTERNATIONAL ISO
STANDARD 11306
First edition
1998-02-15
Corrosion of metals and alloys —
Guidelines for exposing and evaluating
metals and alloys in surface sea water
Corrosion des métaux et alliages — Lignes directrices pour l'exposition
et l'évaluation des métaux et alliages à la surface de l'eau de mer
A
Reference number
ISO 11306:1998(E)
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SIST EN ISO 10306:1999
ISO 11306:1998(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.
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 ISO 11306 was prepared by Technical Committee
ISO/TC 156, Corrosion of metals and alloys.
© ISO 1998
All rights reserved. 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.
International Organization for Standardization
Case postale 56 • CH-1211 Genève 20 • Switzerland
Internet central@iso.ch
X.400 c=ch; a=400net; p=iso; o=isocs; s=central
Printed in Switzerland
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SIST EN ISO 10306:1999
©
INTERNATIONAL STANDARD ISO ISO 11306:1998(E)
Corrosion of metals and alloys — Guidelines for exposing
and evaluating metals and alloys in surface sea water
1 Scope
1.1 This International Standard gives guidance on the conditions and procedures to be followed when conducting
exposures of metals and alloys to surface sea water such that meaningful comparisons may be made for different
locations. This International Standard applies to exposure areas from above water level which are wet for a
significant period (splash and tidal zones) down to a depth at which the composition of the sea water is similar to
that at the surface.
1.2 This practice gives guidance on procedures for the evaluation of the effects of sea water on metals and alloys.
1.3 Because of the variability and complexity of sea water, exposures over a minimum period of one year are
considered necessary to minimize the influence of these variable factors.
2 Normative references
The following standards contain provisions which, through reference in this text, constitute provisions of this
International Standard. At the time of publication, the editions indicated were valid. All standards are subject to
revision, and parties to agreements based on this International Standard are encouraged to investigate the
possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain
registers of currently valid International Standards.
ISO 8407:1991, Corrosion of metals and alloys — Removal of corrosion products from corrosion test specimens.
ISO 11463:1995, Corrosion of metals and alloys — Evaluation of pitting corrosion.
3 Control specimens
It is prudent, because of the inherent variability in processing conditions, that control specimens be used in
corrosion tests. Two kinds of control specimens are needed as follows.
A specimen for which performance is well established in the given environment and which actually does corrode (for
example, mild steel). Its corrosion rate will help to determine the length of the test period.
A specimen that is known to be normally resistant in the given environment (for example, copper). The purpose of
this specimen is to make sure that no unusual conditions, such as chemical pollution, were encountered during the
test period. In the case of evaluations of aluminium alloys, care should be exercised in the location of these copper
specimens (see 6.2).
1
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SIST EN ISO 10306:1999
©
ISO
ISO 11306:1998(E)
4 Test sites
4.1 Test sites shall be chosen at locations representative of natural seawater environments where the metals or
alloys to be tested may be used. Ideally, a natural seawater test site shall be in a protected location where all
necessary conditions required for such tests (splash, tidal and full immersion) may be encountered. Unless the
intent is to determine the corrosion due to pollution, the site shall have clean, uncontaminated sea water. Reference
shall be made to tropical versus other conditions, and seasonal variations in temperature and in deposition of
marine growth on the test panels with a defined “fouling season”. Climatic and atmospheric characteristics may also
be important in selecting a site where tidal or splash and spray exposures may be conducted.
4.2 Observations of critical water parameters shall be made and reported; depending on the experiment, these
typically include water temperature, salinity, conductivity, pH, oxygen content, other compositional parameters (e.g.
ammonia, hydrogen, sulfides, carbon dioxide, heavy metals) and tidal flow (velocity). The periodicity of
measurement of water parameters will be a function of the length of exposure and the expected time variation in
these parameters. A mean value of the seawater conditions on a monthly basis is normal.
5 Exposure racks
5.1 Test racks shall be constructed of a material that will remain intact for the entire proposed period of exposure.
Monel nickel-copper alloy 400 (UNS No. N04400) has been found to be an excellent material for racks, but is not
recommended for holding aluminium specimens. Coated aluminium racks (6061-T6 or 5086-H32) also have given
satisfactory service when used with strip insulators (such as polyethylene) and nylon bolts and nuts to mount the
specimens. Nonmetallic racks may be used, provided that they have no effect on the corrosion of the specimens.
Reinforced plastic racks may be used. Treated wood is not appropriate for test racks as the preservative may leach
out and affect corrosion of the test materials.
5.2 Specimens shall be mounted in the racks so that they are supported by porcelain or plastic insulators and do
not make electrical contact with each other or with the supporting racks. Rack charts shall be maintained showing
the positions of all specimens and exposure data.
5.3 Spacing of the mounted specimens can be important, therefore it is desirable to have sufficient space between
surfaces of test specimens to ensure that adequate water flows between them and that with long exposures the
accumulated fouling will not block off the surface to the presence of the seawater environment.
5.4 Racks may be suspended by such materials as nylon, polyester or polypropylene rope depending on
prevailing conditions. Steel wire rope shall not be used.
5.5 Exposure racks shal
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