Find the most up-to-date version of ISO at Engineering ISOpdf – Download as PDF File .pdf) or read online. ASTM A method E is sometimes called the Strauss test, and is the same as ISO method A, except for the duration. As 15 hours is a difficult test period .
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Where a bend test is required, the sample must be bent over a mandrel of a diameter related to the specimen diameter, without any cracking, eh determined by inspection under a low power microscope and a microsection in any suspicious areas. It has been used for the duplex stainless steel UNS Swhich has been used for nitric acid cooler tubes. Where a standard is included in a purchase specification, this must be followed, although it is advised that unsuitable tests, such as the Huey test for duplex and super austenitic stainless steels, are queried.
Corrosion test in media containing sulfuric acid. Where no specific test is specified, Table 5 suggests the most appropriate alongside a second choice, if the first ios declined.
BS EN ISO 3651-2:1998
SEP method 3 is a special environment only suitable for the Ni-Mo alloys, as described below, in section 4. Please download Chrome or Firefox or view our browser tips. Accept and continue Learn more about the cookies we use and how to change your settings. This website is best viewed with browser version of up to Microsoft Internet Explorer 8 or Firefox 3.
Corrosion test in media containing sulfuric acid Status: Ferritic, austenitic and ferritic-austenitic duplex stainless steels. The Tests Table 1 below shows the various methods for four common standards: Both of these tests should be followed by water quenching.
You may experience issues viewing this site in Internet Explorer 9, 10 or Samples may be rectangular or cylindrical to suit the test vessel, but where a bend test is required, it is suggested that the sample be a 361-2 of mm long. When a test has been selected, follow the detailed directions in that standard for making up the test solution, the preparation of test samples and the finish to be used.
The test methods in Table 1 were designed with io alloys in mind, but the proliferation of new CRAs has meant that the selection of a suitable test method is difficult. Take the smart route enn manage medical device compliance. The specifications for bend testing are shown in Table 4.
Intergranular Corrosion Tests for CRAs
Suggested test methods for different corrosion resistant alloys. Ios more about the cookies we use and how to change your settings.
Alternatively, a welded test-piece in the as-welded condition may be tested. Uso can be seen that some alloys fall into two categories, and no guidelines are given for selecting the most appropriate. The most convenient size is often a cylinder 10mm diameter by mm long, but other dimensions are possible to suit particular product forms.
You may find similar items within these categories by selecting from the choices below:. Aciers inoxydables ferritiques, austenitiques et austeno-ferritiques duplex.
None of these are identical and cross substitution of results is not possible. ASTM A was designed for austenitic stainless steels, specifically the series alloys.
All bend tests require a tensile test machine or similar, with suitable grips and sufficient strength to bend the strongest alloy.
Just remember that these tests were devised for specific groups of alloys and should not be applied to all CRAs! Test Samples Samples may be rectangular or cylindrical to suit the test vessel, but where a bend test is required, it is suggested that the sample be a minimum of mm long.
ISO is specifically for duplex and all austenitic stainless steels, and recommends ageing at two different temperatures: This document also points out which alloys the tests are intended for, and recommends the most appropriate test when none is specified.
SEP does not require ageing, although it might be required in a specification calling up this standard. Bend test criteria for several standards.
Hence, it is normally only used for stainless steels intended for nuclear service, or another application involving ixo acid.
Find Similar Items 36551-2 product falls into the following categories. Some suggested criteria for the listed alloys are shown in Table 2, below. There are other requirements in these standards over details that are not discussed in this document, and these should be followed, such as conducting bend tests. Table 1 below shows the various methods for four common standards: For alloys not listed in this standard, it will be necessary to carry out some tests on material in various conditions to determine the threshold.