Abstract
This specification covers molybdenum alloy steel plates, intended particularly for welded boilers and other pressure vessels. Plates under this specification are available in three grades having different strength levels: Grade A; Grade B; and Grade C. The steel shall be killed. The steel shall conform to the chemical requirements specified. Tension tests on plates shall conform to the requirements specified.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1. Scope
1.1 This specification covers molybdenum-alloy steel plates, intended particularly for welded boilers and other pressure vessels.
1.2 Plates under this specification are available in three grades having different strength levels as follows:
| Grade | Tensile Strength, ksi [MPa] |
| A | 65–85 [450–585] |
| B | 70–90 [485–620] |
| C | 75–95 [515–655] |
1.3 The maximum thickness of plates is limited only by the capacity of the composition to meet the specified mechanical property requirements; however, current practice normally limits the maximum thickness of plates furnished under this specification as follows:
| Grade | Maximum Thickness, in. [mm] |
| A | 6 [150] |
| B | 6 [150] |
| C | 4 [100] |
1.4 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.
2. Referenced Documents
A20/A20M Specification for General Requirements for Steel Plates for Pressure Vessels
A435/A435M Specification for Straight-Beam Ultrasonic Examination of Steel Plates
A577/A577M Specification for Ultrasonic Angle-Beam Examination of Steel Plates
A578/A578M Specification for Straight-Beam Ultrasonic Examination of Rolled Steel Plates for Special Applications
Index Terms
Alloy steel plate--specifications; Molybdenum alloys--specifications; Pressure vessel steel plate--specifications
Citing ASTM Standards
[Back to Top]
