ASME SA516 pdf download SPECIFICATION FOR PRESSURE VESSEL PLATES, CARBON STEEL, FOR MODERATE- AND LOWER-TEMPERATURE SERVICE
1.1 This specification covers carbon steel plates intended primarily for service in welded pressure vessels where im- proved notch toughness is important.
1.2 Plates under this specification are available in four grades having different strength levels as follows:
Grade U.S. [SI]
55  55–75 [380–515]
60  60–80 [415–550]
65  65–85 [450–585]
70  70–90 [485–620]
1.3 The maximum thickness of plates is limited only by the capacity of the composition to meet the specified mechanical property requirements.
1.4 For plates produced from coil and furnished without heat treatment or with stress relieving only, the additional requirements, including additional testing requirements and the reporting of additional test results of Specification A20/A20M apply.
1.5 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 the specifi- cation.
1.6 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.
2. Referenced Documents
2.1 ASTM Standards:
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
3. General Requirements and Ordering Information
3.1 Material supplied to this product specification shall conform to Specification A20/A20M, which outlines the test- ing and retesting methods and procedures, permissible varia- tions 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 where 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.
3.4 Coils are excluded from qualification to this specifica- tion until they are processed into finished plates. Plates produced from coil means plates that have been cut to individual lengths from coil. The processor directly controls, or is responsible for, the operations involved in the processing of coils into finished plates. Such operations include decoiling, leveling, cutting to length, testing, inspection, conditioning, heat treatment (if applicable), packaging, marking, loading for shipment, and certification.
N OTE 1—For plates produced from coil and furnished without heat treatment or with stress relieving only, three test results are reported for each qualifying coil. Additional requirements regarding plate produced from coil are described in Specification A20/A20M.
3.5 If the requirements of this specification are in conflict with the requirements ofSpecification A20/A20M, the require- ments of this specification shall prevail.
4. Materials and Manufacture
4.1 Steelmaking Practice—The steel shall be killed and shall conform to the fine austenitic grain size requirement of Specification A20/A20M.
5. Heat Treatment
5.1 Plates 1.50 in. [40 mm] and under in thickness are normally supplied in the as-rolled condition. The plates may be ordered normalized or stress relieved, or both.
5.2 Plates over 1.50 in. [40 mm] in thickness shall be normalized.
5.3 When notch-toughness tests are required on plates 1 1 ⁄ 2 in. [40 mm] and under in thickness, the plates shall be normalized unless otherwise specified by the purchaser.
5.4 If approved by the purchaser, cooling rates faster than those obtained by cooling in air are permissible for improve- ment of the toughness, provided the plates are subsequently tempered in the temperature range 1100 to 1300°F [595 to 705°C]. 6. Chemical Composition 6.1 The steel shall conform to the chemical requirements given in Table 1 unless otherwise modified in accordance with Supplementary Requirement S17, Vacuum Carbon-Deoxidized Steel, in Specification A20/A20M.