Half Molybdenum or half Chromium, half Molybdenum See ASME Boiler and Pressure Vessel Code for Table below is only a rather INCOMPLETE and APPROXIMATE summary of ASME data for Procedures, or other requirements and not rely on the table below. The ASME Boiler and Pressure Vessel Code to specify materials, P-Numbers, Anyone specifying materials or requirements should refer directly to The table below is a guide and is for instructive purposes With the same UNS number shall be considered that P-Number. When a base metal with a UNS number Designation is assignedĪ P-Number, then a base metal listed in a different ASME material specification Engineering assessment is necessary prior to a change in materials. P-Numbers or Group Numbers may lead to problems or potentially failures. Indiscriminant substitution of materials in a set of These assignments have been based on comparable base metal
Specified impact test requirements have been assigned Group Numbers within Qualifications required base metals have been assigned P-Numbers by the ASME
To reduce the number of welding and brazing procedure
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