ASTM G146 PDF

Dikora However, due to the broad range of possible materials, test conditions, and variations in test procedures, it f up to the user of this practice to determine the suitability and applicability of these procedures for evaluation of such materials. The main test consists of filling the test cell with hydrogen, heating the vessel ast a user defined temperature set point for a period of typically 48 hours. Are you sure you want to empty the cart? Please login to your authorized staff account to use this feature. These tests can be used to assess the effects of material composition, processing methods, fabrication techniques, and heat treatment as well as the effects of hydrogen partial pressure, service temperature, and cooling rate. Please first verify your email before subscribing to alerts.

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The test temperature and hydrogen gas pressure are selected to simulate those conditions found in refinery hydrogen-containing environments. This system can be used over a broad range of pressures, temperatures, cooling rates, and gaseous hydrogen environments where HID could be a significant problem. These tests can be used to assess the effects of material composition, processing methods, fabrication techniques, and heat treatment as well as the effects of hydrogen partial pressure, service temperature, and cooling rate. Two gas booster pumps, one for nitrogen and the other for hydrogen, are used for pressurizing the test cell. The system incorporates an automated back pressure regulator and a variety of automated valves for pressure control. The control system for the apparatus automatically purges the vessel with argon, performs a high pressure leak test with nitrogen and then sequences the main portion of the test.

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ASTM G146 PDF

Akinobar Most of the information developed using this practice has been obtained for such materials. Link to Active This link will always route to the adtm Active version of the standard. E3 Guide for Preparation of Metallographic Specimens. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards. Typically, longer exposure times at the test conditions must be utilized awtm allow for the resistance to decarburization, internal blistering or cracking, or both, to be evaluated. ASTM-G, — However, due to the broad range of possible materials, test conditions, and variations in test procedures, it is up to the user of this practice to determine the suitability and applicability of these procedures for evaluation of such materials.

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