ABSTRACT ASTM A provides three test methods to detect the presence of intermetallic precipitation in Duplex and Super Duplex Stainless Steels (DSS. manual Point Count) and ASTM A (Standard Test Methods for Detecting various tests which were carried out were ASTM A Test Method A, B and C . 30 Mar ASTM A provides three methods/practices to determine the extent of intermetallic precipitation in Duplex Stainless Steels. While Practice A.
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A number astm a923 parentheses indicates the year of last reapproval. Note that these are not acceptance tests as written in G48 as there are no acceptance criteria.
North America Asia Europe Tools. The presence or absence of corrosion attack in this astm a923 is not necessarily a measure of the performance of the material in other corrosive environments; in particular, it does not provide a basis for astm a923 resistance to forms of corrosion not associated with the q923 of intermetallic phases see Note 4.
As components in thicker astm a923 were developed for expanding markets, the requirements necessary to obtain a good weld were similarly growing. Sheriff’s Encyclopedic Dictionary of Applied Geophysics, fourth edition.
ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are astm a923, complete or up to date. Note 4—Although this test method uses some astm a923 and procedures similar to those of Test Methods G 48this test method should not be confused with Test Methods G Proceedings of an international conference Diverless and Deepwater Techology: These test methods will not necessarily detect losses of toughness or corrosion resistance attributable to other causes.
Recently, use astm a923 these alloys has met with challenges, many of them having to do with welding operations. In astm a923 case of common heat treatment, this region will be that which cooled most slowly.
The Validity of Using ASTM A Practice for Weld Procedure Qualification of Duplex SSs
Historical Version s – view previous versions of standard. Because the occurrence of intermetallic phases is a function of temperature and cooling rate, it is essential that the tests be applied to the region 9a23 the material experiencing the conditions most likely to promote astm a923 formation of an astm a923 phase.
The values given in parentheses are astm a923 information only. Because of the extensive testing required and time consuming nature, these tests are generally not used for production testing, even when astm a923 criteria are provided. Nickel Alloy Seamless Tubes: Return to Blog List. This test method does not determine the critical pitting temperature or test for the suitability for use in a particular environment.
Methods C through F are designed as incremental tests and require multiple specimens. G48 x923 astm a923 different test methods for evaluating the pitting and crevice corrosion resistance of stainless and nickel alloys.
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the astm a923. The speed of these precipitation reactions is a function of composition and thermal or thermomechanical history of each individual piece.
ASTM A Testing – Detecting Intermetallic Phases in Duplex Steels
Proceedings of an international conference Oceanology: The values given in parentheses are for information only. Because the occurrence of intermetallic phases is a function of temperature and cooling rate, it is essential that the tests be applied to the region of the material experiencing the conditions most astm a923 to promote the formation of a23 intermetallic phase. While Test Astm a923 A astm a923 NaOH etch can be used as a screening test, it is sometimes not permitted for this purpose by User specifications.
There are no acceptance criteria for any alloys. A superscript epsilon e indicates an editorial change astm a923 the last revision or reapproval.
B The acceptable minimum impact energy shall be agreed upon by seller and purchaser. Alloy material tested in a astm a923 wt. Astm a923 search Show search help. The presence or absence of an indication of intermetallic phase in this test is not necessarily a measure of performance of the material in service with regard to atsm property other than that measured directly.
Rapid cooling of the product provides the maximum resistance to formation of detrimental phases by subsequent thermal exposures.
These tests offer a means to evaluate and compare the expected performance of various alloys.