tailieunhanh - Standard Specification for Pressure Vessel Plates, Alloy Steel, ChromiumMolybdenum

"Standard Specification for Pressure Vessel Plates, Alloy Steel, Chromium-Molybdenum" covers chromium-molybdenum alloy steel plates intended primarily for welded boilers and pressure vessels designed for elevated temperature service. The maximum thickness of plates is limited only by the capacity of the composition to meet the specified mechanical property requirements. | Designation A387 A387M 11 Used in USDOE-NE Standards Standard Specification for Pressure Vessel Plates Alloy Steel Chromium- Molybdenum1 This standard is issued under the fixed designation A387 A387M the number immediately following the designation indicates the year of original adoption or in the case of revision the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon indicates an editorial change since the last revision or reapproval. This standard has been approved for use by agencies of the . Department of Defense. 1. Scope 2. Referenced Documents 2 This specification covers chromium-molybdenum alloy ASTM Standards 3 steel plates intended primarily for welded boilers and pressure A20 A20M Specification for General Requirements for Steel vessels designed for elevated temperature service. Plates for Pressure Vessels A370 Test Methods and Definitions for Mechanical Testing Plates are available under this specification in several of Steel Products grades having different alloy contents as follows A435 A435M Specification for Straight-Beam Ultrasonic Nominal Nominal Examination of Steel Plates Chromium Molybdenum Grade Content Content A577 A577M Specification for Ultrasonic Angle-Beam Ex- 2 amination of Steel Plates 12 A578 A578M Specification for Straight-Beam Ultrasonic 11 22 22L Examination of Rolled Steel Plates for Special Applica- 21 21L tions 5 A1017 A1017M Specification for Pressure Vessel Plates 9 91 Alloy Steel Chromium-Molybdenum-Tungsten AWS Specifications 4 Each grade except Grades 21L 22L and 91 is available Low-Alloy Steel Electrodes for Shielded Metal in two classes of tensile strength levels as defined in the Tensile Arc Welding Requirements tables. Grades 21L and 22L are available only as Low-Alloy Steel Electrodes and Fluxes for Class 1. Grade 91 is available only as Class 2. .