ASTM A352/A352M-17 pdf free download.Standard Specification for Steel Castings, Ferritic and Martensitic, for Pressure-Containing Parts, Suitable for Low-Temperature Service.
1.1 This specitIcation covers steel castings for valves, flanges. fittings, and other pressure-containing parts intended primarily for low-temperature service.
1 .2 Several grades of ferritic steels and one grade of martensitic steel are covered. Selection of analysis will depend on design and service conditions (Note 1). The temperature shown is the lowest temperature at which the material ordinarily is required to meet the impact requirements of this specification (see Supplementary Requirement S22. Impact Test Temperatures). Users should note that hardenability of some of the grades mentioned may restrict the maximum size at which the required mechanical properties arc obtainable (see Appendix Xl).
7.2.1 The notched bar impact properties of the material shall be determined by testing a set of three Charpy V-notch impact specimens for each heat at one of the standard test temperatures shown in Table 1, depending on the intended service temperature (see Appendix X I). The average energy value of the three specimens shall not be less than specified, with not more than one value permitted below the average minimum specified and no value permitted below the minimum specified for a single specimen.
8. Quality
8.1 The surface of the casting shall he examined visually and shall be free of adhering sand, scale, cracks. and hot tears. Other surface discontinuities shall meet the visual acceptance standards specified in the order. Visual Method SP-55 or other visual standards may be used to define acceptable surface discontinuities and finish. Unacceptable visual surface discontinuities shall be removed and their removal verified by visual examination of the resultant cavities. When methods involving high temperature are used in the removal of discontinuities, castings shall he preheated to at least the minimum temperatures in Table 2.
8.2 When additional inspection is desired. Supplementary Requirements S4. S5, and SlO may he ordered.
8.3 The castings shall not be peened. plugged, or impregnated to stop leaks.
9. Repair by Welding
9.1 Repairs shall be made using procedures and welders in accordance with Practice A488/A488M.
9.2 Welding of Grade LC9 shall be accomplished using nonmagnetic filler material of AWS classification EN1CrFe-2, and shall require liquid penetrant inspection of the weld (Supplementary Requirement S6) when magnetic particle inspection (Supplementary Requirement S4) is specified for the casting.
9.3 Weld repairs shall be inspected to the same quality standards that are used to inspect the castings. When castings are produced with Supplementary Requirement S4 specified, weld repairs shall he inspected by magnetic particle examination to the same standards that are used to inspect the castings. When castings are produced with Supplementary Requirement S5 specified, weld repairs on castings that have leaked on hydrostatic tests, or on castings in which the depth of any cavity prepared for repair welding exceeds 20 % of the wall thickness or 1 in. 125 mml whichever is smaller, or on castings in which any cavity prepared for welding is greater than approximately 10 in.2 165 cm2J shall be radiographed to the same standards that are used to inspect the castings.ASTM A352/A352M pdf download.