ASTM-A352/A352M:2017 pdf free download – Standard Specification for Steel Castings, Ferritic and Martensitic, for Pressure- Containing Parts, Suitable for Low-Temperature Service.
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 I. depending on the intended service temperature (see Appendix Xl). The average energy value of the three specimens shall not be less Lhan 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 discotitinuities 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 be preheated to at least the minimum temperatures in Table 2.
8.2 When additional inspection is desired. Supplementary Requirements 54. S5. and SlO may be ordered.
8.3 The castings shall no he 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 A48X/A48tM.
9.2 Welding of Grade LC9 shall be accomplished using nonmagnetic filler material of AWS classification FNiCrFe-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 be inspected by magnetic particle examina(ion to the same standards that arc uscd 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 S of the wall thickness or I in. 125 minI whichever is smaller, or on castings in which any cavity prepared for welding is greater than approximately 10 in.2 165 cm2] shall be radiographed to the same standards that are used to inspect the castings.
9.4 Castings containing any repair weld that exceeds 20 % of the wall thickness, or I in. 125 mm. whichever is smaller. or that exceeds approsimately 10 in.2 165 cm2I in area, or that was made to correct hydrostatic test defects shall be stress relieved or heat treated alter welding.