ASTM A488/A488M:17 pdf download

ASTM A488/A488M:17 pdf download.Standard Practice for Steel Castings, Welding, Qualifications of Procedures and Personnel.
3. Terminology
3. 1 Definitions—Definitions of terms relating to welding shall be in agreement with the definitions of the American Welding Society, ANSI/AWS A3.O.
4. Weld Orientation
4. 1 Orientation—The orientation of welds with respect to horizontal and vertical planes of reference are classified into four positions, namely, flat, horizontal, vertical, and overhead as shown in Fig. 4. Test material shall be oriented as shown in Fig. 4; however, an angular deviation of 615° from the specitled horizontal and vertical planes is permitted during welding.
4.2 Flat Position (Fig. 4(a))—This position covers plate in a horizontal plane with the weld metal deposited from above, or pipe or a cylindrical casting with its axis horizontal and rolled during welding so that the weld metal is deposited from above.
4.3 Horizontal Position (Fig. 4(b))—This position covers plate in a vertical plane with the axis of the weld horizontal, or pipe or a cylindrical casting with its axis vertical and the axis of the weld horizontal.
4.4 Vertical Position (Fig. 4(c))—ln this position, the plate is in a vertical plane with the axis of the weld vertical.
4.5 Overhead Position (Fig. 4(d))—In this position. the plate is in a horizontal plane with the weld metal deposited from underneath.
4.6 Horizontal Fixed Position (Fig. 4(e))—In this position, the pipe or cylindrical casting has its axis horizontal and the welding groove in a vertical plane. Welding shall he done without rotating the pipe or casting so that the weld metal is deposited from the flat, vertical, and overhead position.
4.7 Qualijication—Qual I tication in the horizontal, vertical, or overhead position shall qualify also for the flat position. Qualification in the horizontal fixed position, or in the horizontal and vertical and overhead positions, shall qualify for all positions.
5. Preparation of Test Plate
5.1 Procedure qualification testing shall be performed on cast or wrought material having the same category number as the casting being welded. Test material shall be subjected to the same heat treatment before and after welding as will he applied to the casting. If the castings are not to be postweld heat treated, then the test material is not to be postweld heat treated. Test plate material for performance qualification testing is covered in 12.2.
5.2 The dimensions of the test plate shall he such as to provide the required number of test specimens.
5.3 The test joint shall he welded using the type of welding groove proposed in the welding procedure. The dimensions of the welding groove are not essential variables of the welding procedure.
5.4 The thickness of the test plate shall depend on the range of thickness to he qualitled as shown in Tables 2 and 3.
5.5 The joint preparation shown in Fig. 5 shall qualify the supplier for all welding on steel castings.
5.6 Where pipe or a cylindrical casting is used for qualification, it is recommended that a minimum nominal diameter of 5 in. Li 25 mml and a minimum thickness of /s in. jI 0 mml he used.
6. Types of Tests
6.1 Four types of tests are used in the qualification procedure as follows:
6. 1. 1 Tension Test—Tests in direct tension are used in the procedure qualification to measure the strength of groove-weld joints.