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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SEP does not require ageing, although it might be required in a specification calling up this standard. ASTM G28 does not require samples to be heat treated.
The latter is a German test, but it is often called up in European projects. It can be seen that some alloys fall into two categories, and no guidelines are given for selecting the most appropriate.
The specifications for bend testing are shown in Table 4. Make an Enquiry Notice: Selection of a Test Oso The test methods in Table 1 were designed with specific alloys in mind, but the proliferation sio new CRAs has meant that the selection of a suitable test method is difficult.
The jso convenient size is often a cylinder 10mm diameter by mm long, but other dimensions are possible to suit particular product forms. R Baboian, Corrosion Tests and Standards: ASTM G28 lists alloys and specifies the test exposure for each. The Tests Table 1 below shows the various methods for four common standards: Nichtrostende ferritische, austenitische und ferritisch-austenitische Duplex- Staehle Korrosionsversuch in schwefelsaeurehaltigen Medien.
33651-2 test solutions and 351-2 for some common intergranular corrosion tests. This website is best viewed with browser version of up to Microsoft Internet Explorer 8 or Een 3. Why were these tests designed?
ISO is specifically for duplex and all austenitic stainless steels, and recommends ageing at two different temperatures: The effect of post weld surface treatments on the corrosion resistance of super duplex stainless steel welds in sea water Corrosion test in media containing sulfuric acid Status: 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.
Intergranular Corrosion Tests for CRAs
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, as determined by inspection under a low power microscope and a microsection in any suspicious areas. Methods B and E are suggested for all grades of series austenitic alloys, while method F is suggested for cast type alloys.
You may experience issues viewing this site in Internet Explorer 9, 10 or Ermittlung der Bestaendigkeit nichtrostender Staehle gegen interkristalline Korrosion.
For many alloys, the onset is at 0. Conducting the Tests 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. This document also points out which alloys the tests are intended for, and recommends the most appropriate test when none is specified. Alternatively, a welded test-piece in the as-welded condition may be tested.
BS EN ISO 3651-2:1998
Ferritic, austenitic and ferritic-austenitic duplex stainless steels. Worldwide Standards We can source any standard from anywhere in the world. Get in Touch Contact us by Phone or Email to find out how we can help your industry.
Corrosion test in media containing sulfuric acid. These tests were introduced when the carbon content in CRAs typically hit 0.
Both of these tests should be followed by water quenching. This test should be avoided for most CRAs, except in the circumstances described below, in section 4.
Just remember that these tests were devised for specific groups of alloys and should not be applied to all CRAs!