BS EN ISO 3651-2 PDF

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Draft International Standards adopted by the technical committeesare circulated to the member bodies for voting. Ferritic, austenitic and ferritic-austenitic duplex stainless steels Corrosion test in media containing sulfuric acid1 ScopeThis part of ISO specifies methods for the determination of the resistance to intergranularcorrosion of ferritic, austenitic and ferritic-austenitic duplex stainless steels in media containing sulfuricacid.

It also specifies the purposes which may be assigned to the test. Incase of dispute, the duration of the test shall be 20 h.

ISO (E)-Character PDF Document

This should be achieved by micro examination ofsamples of each steel grade tested. Published on Dec View 69 Download Unless otherwise specified, no part of this publication may be reproducedor utilized in any form or by any means, electronic or mechanical, including photocopying andmicrofilm, without permission in writing from the publisher.

The test pieces are firstly immersed in the coldtest solution following which the solution is brought to the boil, from which point onwards the testduration commences.

The distance between theplatens after flattening, measured under load, shall be no greater than the following value, H, inmillimetres: The copper filings may be reused if they are cleaned in warm tap water after each test.

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The test piece shall be bent to isp least 90 over a mandrel with a radius not exceeding the thickness ofthe test piece. Determination de la resistance a la corrosion intergranulaire des aciers inoxydables.

The corrosivesolution may be used more than once provided it is not discoloured and that its density has not changed. Aciers inoxydables ferritiques, austenitiques et austeno-ferritiques duplex.

The test pieces are firstlyimmersed in the cold test solution following which the solution is brought to the boil, from which pointonwards the test duration commences. Corrosion test in media containing sulfuric acid Status: A Reference numberISO NOTE When an evaluation is questionable a metallographic examination of a longitudinal cross section of the test piecemay be used to detect the presence of intergranular corrosion and to measure the depth of penetration.

Over-heating of the test piece shall be avoided. NOTE A determination of the weight loss may be used as a complement to the bend test or the flattening test for tubeswith up to 60 mm outside diameter according to 5. Annex A gives examples of application of the three methods on stainless steels. Thetest pieces shall be in metallic contact with the copper but not with each other. This website is best viewed with browser version of up to Microsoft Internet Explorer 8 or Firefox 3.

The solution shall be maintained at boiling 20 h 5 h. NOTE Corrosion rates are expected to increase if all the ferric sulfate is used up. Unless otherwise stated on the order,the method of preparation shall be left to the manufacturer and shall be recorded in the test report. Ferritic, austenitic and ferritic-austenitic duplex stainlesssteels Corrosion test in media containing sulfuric acidAnnexes A and B of this part of ISO are for information only.

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The test pieces are embedded in electrical gradecopper filings on the bottom of the flask. These test should, in no case, be considered as an absolute criterionof the quality of the metal. The solution shall be maintained at boiling during 20 h 5 h. The test methods included are: You may experience issues viewing this site in Internet Explorer 9, 10 or Dstu en iso 2 Business.

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ISO 3651-2-1998(E)-Character PDF Document

Worldwide Standards We can source any standard from anywhere in the world. You may find similar items within these categories by selecting from the choices below:. It is to be noted, however, that the weight loss will not measure theintergranular corrosion isso but also any general corrosion occuring. Ermittlung der Bestaendigkeit nichtrostender Staehle gegen interkristalline Korrosion.

In case ofdispute, the duration of the test shall be 20 h. The work of preparing International Standards is e out through ISO technical committees.