ASTM A387:17 pdf download

ASTM A387:17 pdf download.Standard Specification for Pressure Vessel Plates, Alloy Steel, Chromium-Molybdenum.
3.2 In addition to the basic requirements of this specification, certain supplementary requirements are available when additional control, testing. or examination is required to meet end use requirements. The purchaser is referred to the listed supplementary requirements in this specification and to the detailed requirements in Specification A20/A2OM.
3.3 If the requirements of this specification arc in conflict with the requirements of Specification A20/A2OM, the requirements of this specification shall prevail.
4. Manufacture
4. 1 Steelinaking Practice—The steel shall be killed.
5. Heat Treatment
5.1 Except for Grade 91, all plates shall he thermally treated either by annealing, normalizing and tempering, or, when permitted by the purchaser, accelerated cooling from the austenitizing temperature by air blasting or liquid quenching, followed by tempering. Minimum tempering temperatures shall be as follows:
5. 1 . 1 Grade 91 plates shall be thermally treated, either by normalizing and tempering or by accelerated cooling from the austenitizing temperature by air blasting or liquid quenching,
followed by tempering. Grade 91 plates shall be austenitized at 1900 to 1975°F [1040 to 1080°C] and shall he tempered at 1350 to 1470°F [730 to 800°C].
5.2 Grade 5, 9, 21, 21L, 22, 22L, and 91 plates ordered without the heat treatment required by 5.1 shall be furnished in either the stress relieved or the annealed condition.
5.3 For plates ordered without the heat treatment required by 5.1, heat treatment of the plates to conform to 5.1 and to Table 2 or Table 3, as applicable, shall he the responsibility of the purchaser.
6. Chemical Requirements
6.1 The steel shall conform to the requirements as to chemical composition shown in Table I unless otherwise modified in accordance with Supplementary Requirement S17,Vacuum Carbon-Deoxidized Steel, in Specification A20/A20M for grades other than Grade 11.
7.Metallurgical Structure
7.1 Austenitic Grain Size—Grade 2 material shall have acoarse austenitic grain size.
8. Mechanical Requirements8.1 Tension Test Requirements:
8.1.1The material as represented by the tension test speci-mens shall conform to the applicable requirements of Table 2or Table 3, as specified on the order.
8.1.2 Adjustment of the percentage elongation requirementsis permitted in accordance with Specification A20/A20M forplates up to /4 in.[20 mm] inclusive, in thickness when an 8-in.[200-mm] gage length is used.
9. Repair Welding
9.1 Repair welding shall be permitted only with the ap-proval of the purchaser. Repair welds shall meet the require-ments of the construction code specified by the purchaser.9.2 All repair welds in Grade 91 shall be made with one ofthe following welding processes and consumables: SMAW,A5.5IA5.5M E90xX-B9;SAW,A5.23/A5.23M EB9 +ncutralflux;GTAW，A5.28/A5.28M ER90S-B9; and FCAW A5.29/A5.29M E91T1-B9. In addition, the sum of the Ni+Mn contentof all welding consumables used to weld repair Grade 9l plateshall not exceed 1.0 %e.
10. Marking
10.1 In addition to the marking required in SpecificationA20/A20M,each plate shall be legibly stamped or stenciled,depending upon the ordered thickness，with the letter A forannealed,N for normalized and tempered, and o for acceler-ated cooled and tempered, as applicable.
11. Keywords
11.1 alloy steel; alloy steel plate; pressure containing parts;pressure vessel steels; steel plates; steel plates for pressure vessels.