Standard Practice for Evaluation of Disbonding of Bimetallic Stainless Alloy/Steel Plate for Use in High-Pressure, High-Temperature Refinery Hydrogen Service

Importancia y uso:

5.1 This practice provides an indication of the resistance or susceptibility, or both, to HID of a metallurgically bonded stainless alloy surface layer on a steel substrate due to exposure to hydrogen-containing gaseous environments under HP/HT conditions. This practice is applicable over a broad range of pressures, temperatures, cooling rates, and gaseous hydrogen environments where HID could be a significant problem. These procedures 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. The HID produced by these procedures may not correlate directly with service experience for particular applications. Additionally, this practice does not address the evaluation of high-temperature hydrogen attack in the steel substrate. Typically, longer exposure times at the test conditions must be utilized to allow for the resistance to decarburization, internal blistering or cracking, or both, to be evaluated.

Subcomité:

G01.05

Volúmen:

03.02

Número ICS:

77.140.20 (Steels of high quality)

Palabras clave:

autoclave; disbonding; high pressure; high temperature; hydrogen; hydroprocessing; metallography; refining; ultrasonic testing;