ASME SA-479 2019 pdf download.Stainless Steel Bars and Shapes for Use in Boilers and Other Pressure Vessels.
3. General Requirements 3.1 The following requirements for orders for material furnished under this specification shall conform to the appli- cable requirements of the current edition of Specification A484/A484M. 3.1.1 Definitions, 3.1.2 General requirements for delivery, 3.1.3 Ordering information, 3.1.4 Process, 3.1.5 Special tests, 3.1.6 Heat treatment, 3.1.7 Dimensions and permissible variations, 3.1.8 Workmanship, finish, and appearance, 3.1.9 Number of tests/test methods, 3.1.10 Specimen preparation, 3.1.11 Retreatment, 3.1.12 Inspection, 3.1.13 Rejection and rehearing, 3.1.14 Material test report, 3.1.15 Certification, and 3.1.16 Packaging, marking, and loading.
4. Other Requirements 4.1 In addition to the requirements of this specification, all requirements of the current editions of Specification A484/ A484M shall apply. Failure to comply with the general requirements of Specification A484/A484M constitutes non- conformance with this specification.
7. Mechanical Properties Requirements 7.1 The material shall conform to the mechanical property requirements specified in Table 2 for the grade ordered. At least one room-temperature test shall be performed by the manufac- turer on a sample from at least one bar or shape from each lot of material. 7.2 The yield strength shall be determined by the offset (0.2 %) method as prescribed in Test Methods and Definitions A370. 7.3 Martensitic material supplied in the annealed condition shall be capable of meeting the hardened and tempered mechanical properties when heat treated. 7.4 Hardness measurements, when required, shall be made at a location midway between the surface and the center of the cross section. 7.5 Martensitic grades shall be capable of meeting the hardness requirements after heat treating as specified in Table 3.
9. Testing for Intermetallic Compounds 9.1 When specified by the purchaser in the purchase order, the manufacturer shall test the austenitic or austenitic-ferritic (duplex) stainless steel material in its final condition in accordance with supplementary test requirements S6. N OTE 2—Many, if not all, duplex stainless steels and some austenitic stainless steels will form intermetallic phases or compounds such as sigma, chi, and laves phases when exposed to temperatures below the specified annealing temperature or cooled slowly from a higher tempera- ture during casting, welding, or annealing. These phases can have a negative effect on mechanical properties and corrosion resistance. These phases can typically be removed by correct annealing and cooling practices. The presence of these phases can be demonstrated by tests, typically involving metallography, impact toughness, or corrosion resistance, although the testing requirements may be different for different alloy grades. Such testing may or may not be routinely performed by the manufacturer.ASME SA-479 pdf download.