sa-426.pdf

113 when certification is required by the purchaser

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11.3 When certification is required by the purchaser and the hydrostatic test has been omitted, the certifica- tion shall clearly state “not hydrostatically tested”. The specification number and material grade shown on the certification shall be followed by the letters “NH”. 12. Visual Inspection 12.1 The surface of the casting shall be free from cracks and hot tears as determined by visual examina- tion. Other surface imperfections shall be judged in accordance with visual acceptance criteria which may be specified in the order. 13. Rework and Retreatment 13.1 Defects as defined in Section 13 shall be removed and their removal verified by visual inspection of the resultant cavities. Defects that are located by inspecting with supplementary requirements S6, S7, S8, or S9 shall be removed or reduced to an acceptable size. 13.2 If removal of the defect does not infringe upon the minimum wall thickness, the depression may be blended uniformly into the surrounding surface. 763 13.3 If the cavity resulting from defect removal infringes upon the minimum wall thickness, weld repair is permitted subject to the purchaser’s approval. The composition of the weld rod used shall be suitable for the composition of the metal being welded. 13.3.1 Only welders and procedures qualified in accordance with ASME Boiler and Pressure Vessel Code, Section IX, shall be used. All repair welds will be inspected to the same quality standards used to inspect the casting. 14. Permissible Variations in Dimensions 14.1 Thickness —The wall thickness shall not vary over that specified by more than 1 / 8 in. [3 mm]. There shall be no variation under the specified wall thickness. 15. Rejection 15.1 Each length of pipe received from the manufac- turer may be inspected by the purchaser and, if it does not meet the requirements of a specification based on the inspection and test method as outlined in the specification, the pipe may be rejected and the manufac- turer shall be notified. Disposition of rejected pipe shall be a matter of agreement between the manufacturer and the purchaser. 16. Product Marking 16.1 Each length of pipe shall be legibly marked with the manufacturer’s name or brand, the specification number and grade. In addition, heat numbers or serial numbers that are traceable to heat numbers shall be marked on each length of pipe.
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SA-426 1998 SECTION II TABLE 1 CHEMICAL REQUIREMENTS Composition, % Man- Phospho- Grade Carbon ganese rus, max Sulfur, max Silicon Chromium Molybdenum CP1 0.25 max 0.30–0.80 0.040 0.045 0.10–0.50 . . . 0.44–0.65 CP2 0.10–0.20 0.30–0.61 0.040 0.045 0.10–0.50 0.50–0.81 0.44–0.65 CP5 0.20 max 0.30–0.70 0.040 0.045 0.75 max 4.00–6.50 0.45–0.65 CP5b 0.15 max 0.30–0.60 0.040 0.045 1.00–2.00 4.00–6.00 0.45–0.65 CP9 0.20 max 0.30–0.65 0.040 0.045 0.25–1.00 8.00–10.00 0.90–1.20 CP11 0.05–0.20 0.30–0.80 0.040 0.045 0.60 max 1.00–1.50 0.44–0.65 CP12 0.05–0.15 0.30–0.61 0.040 0.045 0.50 max 0.80–1.25 0.44–0.65 CP15 0.15 max 0.30–0.60 0.040 0.045 0.15–1.65 . . . 0.44–0.65 CP21 0.05–0.15 0.30–0.60 0.040 0.045 0.50 max 2.65–3.35 0.80–1.06 CP22 0.05–0.15 0.30–0.70 0.040 0.045 0.60 max 2.00–2.75 0.90–1.20 CPCA15 0.15 max 1.00 max 0.040 0.040 1.50 max 11.5–14.0 0.50 max TABLE 2 TENSILE PROPERTIES AND HARDNESS REQUIREMENTS Tensile strength, min, psi (MPa): Grade CP1 65 000 (450) Grades CP11, CP22 70 000 (485) Grades CP5, CP9, CPCA15 90 000 (620) All other grades
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  • Fall '19
  • Test method, specification, Nondestructive testing, Charpy impact test, steel castings, ASME Boiler

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