ASTM-A543

Designation:A 543/A 543M-93 (Reapproved 2004)1NTERNATIONALStandard Specification forPressure Vessel Plates,Alloy Steel,Quenched andTempered Nickel-Chromium-Molybdenum1This standard is issued under the fixed des ignation A 543/A 543M;the number immediately following the designation indicates the yearof 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 (e)indicates an editorial change since the last revision or reapproval.e'Nom-Supplementary Requirement S14,Bend Test,was editorially removed in September 2004.1.ScopeTABLE 1 Chemical Requirements1.1 This specification2 covers nickel-chromium-Composition,molybdenum alloy steel plates for use in the quenched andElementtempered condition,intended for the fabrication of weldedType BType C0.200.18pressure vessels and other pressure equipment.These alloyCarbon,maxAManganese,maxA0.400.40compositions are nommally considered for construction involv-Phosphorus,maxA0.0200.020ing plate thicknesses of 2 in.[50 mm]or greater.Sulfur,max0.0200.0201.2 Material under this specifi cation is available in twoSilicon:Heat analysis0.15-0.400.15-0.40types,B and C.The material is also available in three classesProduct analysis0.13-0450.13-0.45as follows:Nickel:Heat analysis2.25-4.002.00-3.50Minimum Tensile Strength,Product analysis2.18-4.071.93-3.57Classksi [MPa]Chromium:Heat analysis1.00-1.901.00-1.90105725]Product analysis0.94-1.960.94-1962115795Molybdenum:901620Heat analysis0.20-0.650.20-065Product analysis0.16-0.690.16-0.691.3 The maximum thickness of plates is limited only by theVanadium,max0.030.03capacity of the chemical composition to meet the specifiedAApplies to both heat and product analyses.mechanical property requirements.1.4 The minimum plate thickness is 36 in.[5 mm].1.5 The values stated in either inch-pound units or SI unitsA 20/A20M Specifi cation for General Requirements forSteel Plates for Pressure Vesselsare to be regarded separately as standard.Within the text,theA 435/A435M Specification for Straight-Beam UltrasonicSI units are shown in brackets.The values stated in eachExamination of Steel Platessystem are not exact equivalents;therefore,each system mustA 577/A577M Specifi cation for Ultrasonic Angle-Beambe used independently of the other.Combining values from theExamination of Steel Platestwo systems may result in nonconformance with the specifi-A 578/A578M Specification for Straight-Beam Ultrasoniccation.Examination of Plain and Clad Steel Plates for Special2.Referenced DocumentsApplications2.1 ASTM Standards:33.General Requirements and Ordering Information3.1 Material supplied to this material specifi cation shallconform to Specifi cation A 20/A 20M.These requirementsThis specifi cation is under the jurisdiction of ASTM Committee A0l on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeTABLE 2 Tensile RequirementsA01.11 on Steel for Boilers and Pressure Ves