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ASTM A537-2019 pdf free download

ASTM A537-2019 pdf free download.Standard Specification for Pressure Vessel Plates, Heat-Treated, Carbon-Manganese- Silicon Steel
1. Scope
1.1 This specification 2 covers heat-treated carbon- manganese-silicon steel plates intended for fusion welded pressure vessels and structures. 1.2 Plates furnished under this specification are available in the following three classes:1.3 The maximum thickness of plates furnished under this specification is 4 in. [100 mm] for Class 1 and 6 in. [150 mm] for Class 2 and Class 3. 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 is to be used independently ofthe other without combining values in any way. 1.5 This international standard was developed in accor- dance with internationally recognized principles on standard- ization established in the Decision on Principles for the Development of International Standards, Guides and Recom- mendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
3. General Requirements and Ordering Information
3.1 Plates furnished supplied to this material specification shall conform to Specification A20/A20M. These requirements outline the testing and retesting methods and procedures; permissible variations in dimensions; and mass, quality, and repair of defects, marking, loading, and ordering information. 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/A20M. 3.3 If the requirements of this specification are in conflict with the requirements ofSpecification A20/A20M, the require- ments of this specification shall prevail.
4. Manufacture
4.1 Steelmaking Practice—The steel shall be killed and conform to the fine austenitic grain size requirement of Specification A20/A20M.
5. Heat Treatment
5.1 All plates shall be thermally treated as follows: 5.1.1 Class 1 plates shall be normalized. 5.1.2 Class 2 and Class 3 plates shall be quenched and tempered. The tempering temperature for Class 2 plates shall not be less than 1100°F [595°C] and not less than 1150°F [620°C] for Class 3 plates.
6. Chemical Requirements
6.1 The steel shall conform to the chemical requirements shown in Table 1 unless otherwise modified in accordance with Supplementary Requirement S17, Vacuum Carbon-Deoxidized Steel, in Specification A20/A20M.
7. Mechanical Requirements
7.1 Tension Tests: 7.1.1 Requirements—The material as represented by the tension-test specimens shall conform to the requirements shown in Table 2. 7.1.2 For Class 2 and Class 3 plates with a nominal thickness of 3 ⁄ 4 in. [20 mm] and under, the 1 1 ⁄ 2 -in. [40-mm] wide rectangular specimen may be used for the tension test, and the elongation may be determined in a 2-in. [50-mm] gage length that includes the fracture and that shows the greatest elongation.
8. Keywords
8.1 carbon steel plate; pressure containing parts; pressure vessel steels; steel plates for pressure vessel application

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