ASTM A387/A387M-17a(2023)

Standard Specification for Pressure Vessel Plates, Alloy Steel, Chromium-Molybdenum

standard by ASTM International , 09/01/2023

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Full Description

1.1 This specification2 covers chromium-molybdenum alloy steel plates intended primarily for welded boilers and pressure vessels designed for elevated temperature service.

1.2 Plates are available under this specification in several grades having different alloy contents as follows:

Nominal Nominal Chromium Molybdenum Grade Content, % Content, % 2 0.50 0.50 12 1.00 0.50 11 1.25 0.50 22 2.25 1.00 21 3.00 1.00 5 5.00 0.50 9 9.00 1.00 91 9.00 1.00

1.3 Each grade except Grade 91 is available in two classes of tensile strength levels as defined in the Tensile Requirements tables. Grade 91 is available only as Class 2. Grade 91 consists of two types, with Type 2 differentiated from Type 1 by requiring restricted composition for the enhancement of creep resistance.

Note 1: Grade 911, previously covered by this specification, is now covered by Specification A1017/A1017M.

1.4 The maximum thickness of plates is limited only by the capacity of the composition to meet the specified mechanical property requirements.

1.5 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents. Therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with this specification.

1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Product Details

Published:: 09/01/2023
Number of Pages:: 6
File Size:: 1 file , 290 KB
Note:: This product is unavailable in Russia, Ukraine, Belarus