SA-515/SA-515M- ASME 美标
SA515Gr70SA515Gr65SA515Gr60SA515MGr485SA515MGr450SA515MGr415|SA-515/SA-515M Specification for Pressure Vessel Plates, Carbon Steel, for Intermediate- and Higher-Temperature Service, including chemical composition, mechanical properties and supplementary requirements.
(Identical with ASTM Specification A515/A515M-17.)
1.1 This specification covers carbon-silicon steel plates primarily for intermediate- and higher-temperature service in welded boilers and other pressure vessels.
1.2 Plates under this specification are available in three grades having different strength levels as follows:
| Grade U.S. [SI] | Tensile Strength, ksi [MPa] |
|---|---|
| 60 [415] | 60–80 [415–550] |
| 65 [450] | 65–85 [450–585] |
| 70 [485] | 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 specification.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
3.1 Plates supplied to this product 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 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 of Specification A20/A20M, the requirements of this specification shall prevail.
3.4 Coils are excluded from qualification to this specification 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.
The steel shall be killed and made to a coarse austenitic grain size practice.
5.1 Plates 2 in. [50 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 2 in. [50 mm] in thickness shall be normalized.
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.
| Elements | Grade | ||
|---|---|---|---|
| Grade 60 [Grade 415] | Grade 65 [Grade 450] | Grade 70 [Grade 485] | |
| Carbon, max:A | |||
| 1 in. [25 mm] and under | 0.24 | 0.28 | 0.31 |
| Over 1 to 2 in. [25 to 50 mm], incl. | 0.27 | 0.31 | 0.33 |
| Over 2 to 4 in. [50 to 100 mm], incl. | 0.29 | 0.33 | 0.35 |
| Over 4 to 8 in. [100 to 200 mm], incl. | 0.31 | 0.33 | 0.35 |
| Over 8 in. [200 mm] | 0.31 | 0.33 | 0.35 |
| Manganese,B max: | |||
| Heat analysis | 0.90 | 0.90 | 1.20 |
| Product analysis | 0.98 | 0.98 | 1.30 |
| Phosphorus, maxA | 0.025 | 0.025 | 0.025 |
| Sulfur, maxA | 0.025 | 0.025 | 0.025 |
| Silicon: | |||
| Heat analysis | 0.15–0.40 | 0.15–0.40 | 0.15–0.45 |
| Product analysis | 0.13–0.45 | 0.13–0.45 | 0.13–0.45 |
|
A Applies to both heat and product analyses. B For each reduction of 0.01 percentage point below the specified maximum for carbon, an increase of 0.06 percentage point above the specified maximum for manganese is permitted, up to a maximum of 1.50 % by heat analysis and 1.60 % by product analysis. |
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7.1 The plates, as represented by the tension test specimens, shall conform to the requirements given in Table 2.
| Grade | |||
|---|---|---|---|
| 60 [415] | 65 [450] | 70 [485] | |
| Tensile strength, ksi [MPa] | 60–80 [415–550] | 65–85 [450–585] | 70–90 [485–620] |
| Yield strength, min, ksi [MPa] | 32 [220] | 35 [240] | 38 [260] |
| Elongation in 8 in. [200 mm], min, %A | 21 | 19 | 17 |
| Elongation in 2 in. [50 mm], min, %A | 25 | 23 | 21 |
| A See Specification A20/A20M for elongation adjustment. | |||
8.1 carbon steel; carbon steel plate; pressure containing parts; pressure vessel steels; steel plates for pressure vessels
Supplementary requirements shall not apply unless specified in the purchase order.
A list of standardized supplementary requirements for use at the option of the purchaser is included in Specification A20/A20M. Those that are considered suitable for use with this specification are listed below by title.
Also listed below is an additional optional supplementary requirement suitable for this specification:
S61.1 The material shall have a carburized austenitic grain size of 1 to 5.
Source: This specification interpretation is compiled from the Wugang Steel Spot standards library (sister site, reposted with permission). Copyright of the original standards belongs to each standards organization. For official use please refer to the published standard text.
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