Corrosion Tests in Artificial Atmospheres — Salt Spray Tests
Document Title [Hindi] :
कृत्रिम वायुमंडल में संक्षारण परीक्षण — नमक स्प्रे परीक्षण
Document Type :
Revision
Language :
English
Priority :
3
ICS Code :
77.060
Date of Project Approval :
24-07-2023
Standards to be Revised :
Sl.No.
Is No & Year
1
IS 5528: 2024
Standards to be Superseded :
Sl.No.
Is No & Year
1
IS 5528: 2024
2
IS 11864: 1986
3
IS 6910: 1985
4
IS 9844: 1981
Classification Details
Group :
Metals, Alloys and Metal Products (including Steel Products)
Sub Group :
Heat treatment, metallography and testing
Sub Sub Group :
Methods for chemical analysis of non-ferrous materials
Aspects :
Code of Practice
Risk :
None
Certification :
None
Short Commom Man's Title :
Method of testing corrosion resistance of electroplated and anodized aluminium coating by copper
ITCHS Code :
NA
Ministry :
Sustainable development Goals :
Degree of Equivalence :
Identical under dual numbering
Identical/Equivalent Standards :
ISO 9227 : 2022
Organization Type:
ISO
Division Council Chairperson Approval Details
::Cross Referenced Indian Standard::
Sl. No.
Is No & Year
IS Title
1
IS 101 : Part 3 : Sec 2: 1989
Methods of sampling and tes for paints,varnishes and related products: Part 3 tests on paint film formation: Sec 2 film thickness (Third Revision)
2
:
Sl. No.
Document No
Document Title
1
MTD/24 /
23220
Corrosion of metals and alloys — Vocabulary
::Cross Referenced International Standard(s) & Standard(s) Of National SDO(s) ::
Sl. No.
Prefix
Number
Part
Section
Year
1
ISO
1514
-
-
2016
2
ISO
4623
2
-
2016
3
ISO
8407
-
-
2021
4
ISO
17872
-
-
2019
5
ISO
2808
-
-
2019
6
ISO
3574
-
-
2012
Sl.No.
Synosis Points
1
There is seldom a direct relation between resistance to the action of salt spray and resistance to corrosion in other media, because several factors influencing the progress of corrosion, such as the formation of protective films, vary greatly with the conditions encountered. Therefore, the test results should not be regarded as a direct guide to the corrosion resistance of the tested metallic materials in all environments where these materials can be used. Also, the performance of different materials during the test should not be taken as a direct guide to the corrosion resistance of these materials in service.
Nevertheless, the method described gives a means of checking that the comparative quality of a metallic material, with or without corrosion protection, is maintained.
Different metallic substrates (metals) cannot be tested in direct comparison in accordance to their corrosion resistances in salt spray tests. Comparative testing is only applicable for the same kind of substrate.
2
Salt spray tests are generally suitable as corrosion protection tests for rapid analysis for discontinuities, pores and damage in organic and inorganic coatings. In addition, for quality control purposes, comparison can be made between specimens coated with the same coating. As comparative tests, however, salt spray tests are only suitable if the coatings are sufficiently similar in nature.
When interpreting test results (e.g. minimum time until appearance defects or protection defects) for product quality control or acceptance specifications, it is important to recognize that the salt spray test can have a low level of reproducibility, especially with production parts tested in different laboratories.
It is often not possible to use results gained from salt spray testing as a comparative guide to the long-term behaviour of different coating systems, since the corrosion stress during these tests differs significantly from the corrosion stresses encountered in practice.