увод
ИСО (Међународна организација за стандардизацију) је глобални савез националних тела за стандардизацију (Тела чланица ИСО). Развој међународних стандарда се обично спроводи преко ИСО техничких комитета. Свака институција чланица заинтересована за предмет за који је основан технички комитет има право да буде заступљена у тој комисији. Међународне владине и невладине организације које су у вези са ИСО такође су укључене у овај посао. ИСО блиско сарађује са Међународном електротехничком комисијом (ИЕЦ) о свим питањима електричне стандардизације.

Процедуре које се користе за израду овог документа и оне које се користе за даље одржавање описане су у Делу 1 ИСО/ИЕЦ директиве. Нарочито, треба обратити пажњу на различите критеријуме одобрења који су потребни за различите типове ИСО докумената. This document has been drafted in accordance with the editing rules of ISO/IEC Directive Part 2 (види исо.орг/дирецтивес).

Please note that certain elements of this document may be subject to patent rights. ИСО није одговоран за идентификацију било ког или свих таквих патената. Details of any patent rights identified during the preparation of the document will be found in the introduction and/or in the list of patent claims received by ISO (see iso.org/patents).

Any trade names used in this document are provided for the convenience of the user and do not constitute an endorsement.

For a description of the meaning of specific ISO terms and expressions related to conformity assessment, and for information on ISO’s compliance with WTO principles in Technical Barriers to Trade (ТБТ), please see the following URL: Foreword – Supplementary information

The committee responsible for this document is ISO/TC 156, Corrosion of Metals and Alloys.

The second edition cancelled and replaced the first edition (ИСО 16701:2003), which was a minor revision.

ИСО 16701-2015 Corrosion of metals and alloys Accelerated corrosion tests in artificial atmospheres involving exposure to controlled conditions of moisture cycling and intermittent spray of salt solutions

увести
Atmospheric corrosion of metal materials, with or without corrosion protection, is affected by a number of environmental factors, the importance of which may vary depending on the type of metal material and the type of environment. Стога, when designing laboratory corrosion tests, it is impossible to take into account the full complexity of actual conditions of use. Such an acceleration (forced condition) can also negatively affect the correlation of magnetic field properties. Међутим, tests with a humidity cycle and only intermittent exposure to salt solutions generally have a better correlation with field performance than tests using continuous salt spray.

This international standard was developed in the automotive environment, where the main factor of corrosion is the use of winter deicing road salt in cool/cold temperate regions around the world, where it functions as a sodium chloride compound under cyclic humidity conditions. This test procedure is moderately affected by humidity and salinity and is designed to be suitable for quality assurance of metal and corrosion protection commonly encountered in motor vehicles. The method may also be relevant in other applications, providing similar climatic conditions that represent the effects of sodium chloride compounds.

1 Range
This standard specifies test methods, reagents and procedures to be used in accelerated atmospheric corrosion tests, including conditions of exposure to a slightly acidified solution of 1% NaCl for 6 hours twice a week followed by a controlled humidity cycle between 95% RH and 50% RH at a constant temperature of 35 °Ц.

This international standard does not specify the size of the sample, the exposure period for a particular product or the interpretation of the results. Such details are provided in the corresponding product specifications.

Accelerated laboratory corrosion tests are available

– Metals and their alloys,

– Metal coating (anode or cathode),

– Chemical conversion coatings, as well

– Organic coating on metal materials.

Белешка 1 There is a risk of exaggerated pitting if low-alloy stainless steels, especially austenitic grades, are tested according to this international standard, which is not applicable in most service environments.

ИСО 16701-2015 Corrosion of metals and alloys Accelerated corrosion tests in artificial atmospheres involving exposure to controlled conditions of moisture cycling and intermittent spray of salt solutions

Белешка 2 This standard does not apply to the testing of waxes and oil-based rust inhibitors due to increasing temperature conditions.

2 Normative references
All or part of the following documents are referred to normatively in this document and are required for their application. За датиране референце, примењује се само наведена верзија. For undated references, a new version of the reference (укључујући све ревизије) примењује.

ИСО 4628-1, Боје и лакови – Assessment of degradation of coatings – number and size of defects and designation of intensity of uniform change in appearance – Парт 1: General introduction and designation of systems

ИСО 4628-2, Боје и лакови – Assessment of coating degradation – designation of number and size of defects, and intensity of uniform changes in appearance – Парт 2: Assessment of degree of foaming

ИСО 16701-2015 Corrosion of metals and alloys Accelerated corrosion tests in artificial atmospheres involving exposure to controlled conditions of moisture cycling and intermittent spray of salt solutions

ИСО 4628-4, Боје и лакови – Assessment of coating degradation – designation of number and size of defects, and intensity of uniform changes in appearance – Парт 4: Assessment of degree of cracking

ИСО 4628-5, Боје и лакови – Assessment of degradation of coatings – Number and size of defects and designation of intensity of uniform change in appearance – Парт 5: Assessment of degree of peeling

ИСО 8407, Корозија метала и легура – Removal of corrosion products from corrosion samples

ИСО 10289, Corrosion test methods for metallic and other inorganic coatings on metallic substrates – Rating of corrosion tested specimens and finished products

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