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.
|Published (Last):||14 December 2013|
|PDF File Size:||13.43 Mb|
|ePub File Size:||8.78 Mb|
|Price:||Free* [*Free Regsitration Required]|
Rock Mechanics Symposium and 5th U. ASTM A was implemented to assess the presence qstm intermetallic phases in base material, but has also been used for weld qualification. Alloy material astm a923 in astm a923 6 wt. It is the responsibility of the user of this standard to establish appropriate safety and health practices astm a923 determine the applicability of regulatory limitations prior to use.
Rapid cooling of the product provides the maximum resistance to formation of detrimental phases by subsequent thermal exposures. Nickel Alloy Seamless Tubes: Required energy for a subsize specimen is reduced in direct proportion to the reduced area of the subsize specimen relative to that of the full-size specimen.
astn While Test Method A electrolytic NaOH etch can be used astm a923 a screening test, it is sometimes not permitted for this purpose by User specifications. However, since the tests are slightly different, material tested in accordance with one method cannot astm a923 certified to the other without re-testing.
G48 contains six different test methods for evaluating the pitting and crevice corrosion resistance of stainless and nickel alloys. These test methods will not necessarily detect losses of toughness or corrosion resistance attributable to other causes.
ASTM A Testing – Detecting Intermetallic Phases in Duplex Steels
They can astm a923 used as acceptance tests if criteria e. ASTM A includes three separate test methods that can be used to assess the extent of intermetallic precipitation, namely:. Except for rapidly cooled material, it may be necessary to sample from astm a923 location determined to be the most slowly cooled for the material piece to qstm characterized.
There are no acceptance criteria for any alloys.
Sheriff’s Encyclopedic Dictionary of Applied Geophysics, fourth edition. Link to Active This link will always route to the current Active version of the standard. This standard does not purport to address all of the safety concerns, astm a923 any, associated with its use. This abstract is a astm a923 summary of the referenced standard.
Rapid cooling of the product provides the maximum resistance to formation of detrimental phases aztm subsequent thermal exposures.
In the case of common heat treatment, this region will be that which cooled most slowly. 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 likely to promote the formation of an intermetallic phase.
A actually contains three different test methods for astm a923 acceptability. Active view current version of standard. Astm a923 Version s – view previous versions of standard. Test Method C in A is a ferric chloride pitting test. 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 astm a923 likely to promote the a92 of an intermetallic phase.
Link to Active This link will always route to the current Active version of the standard. Referenced Documents purchase astj The documents listed below are referenced within the subject standard but are not provided as part of the standard. Log in to your astm a923 Username. The Charpy procedure as here applied is different from that as commonly applied for the determination of toughness and should not be used when characterization of material toughness is the purpose of the testing.
Because of the extensive testing required and astm a923 consuming nature, these tests are generally not used for production testing, even when astm a923 criteria are provided.
Ferric Chloride Corrosion Testing – Rolled Alloys, Inc.
However, astn parameters can be modified to suit individual test needs. The speed of these precipitation reactions is a function of composition and thermal or thermomechanical history astm a923 each individual piece.
The presence of these phases is detrimental to toughness and corrosion resistance. Test method A-sodium hydroxide etch test, test method B-Charpy impact test, and test method C-ferric chloride corrosion test shall astm a923 made for classification of structures of duplex stainless steels. Asttm for rapidly cooled material, it may be necessary to sample a932 a location astm a923 to be the most slowly cooled for the material piece to be astm a923.
It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
This test method does not determine the critical pitting temperature or test for the suitability for use in a particular environment. Proceedings of an international conference Oceanology: The values given in astm a923 are for information only. A number in parentheses indicates the year of a93 reapproval. The speed of these precipitation reactions is a function of astm a923 and thermal or thermomechanical history of each individual piece.
Because of the wide experience in a23 production testing of duplex alloys, testing in accordance with A is recommended.
Peer reviewed only Published between: Return to Blog List. Publishers Content Z923 Privacy. Astm a923 America Asia Europe Tools. Rapid cooling of the product provides the maximum resistance to formation of detrimental phases by subsequent thermal exposures.