ASME SA-961-SA-961M-2021 pdf – SPECIFICATION FOR COMMON REQUIREMENTS FOR ; STEEL FLANGES, FORGED FITTINGS, VALVES, AND PARTS FOR PIPING APPLICATIONS
ASME SA-961-SA-961M-2021 pdf – SPECIFICATION FOR COMMON REQUIREMENTS FOR ; STEEL FLANGES, FORGED FITTINGS, VALVES, AND PARTS FOR PIPING APPLICATIONS.
9.3 If separately forged test blanks are used, they shall be of the same heat of steel, be subjected to substantially the same reduction and working as the production forging they represent, be heat treated in the same furnace charge except as provided for in the reduced testing provisions of the product specification, under the same conditions as the production forging, and he of the same nominal thickness as the maximum heat treated thickness of the production forging.
9.4 When parts are machined from bar or seamless tubing, as permitted in 6. 1 . 1 and 6. 1 .2, the mechanical properties may be determined for the parts from the starting material, if the parts have not been subjected to any subsequent thermal processing since the time of mechanical test.
11. Tensile Requirements
11.1 Sampling for tensile testing shall conform to the Product Specification.
11.2 When the dimensions of the material to be tested will permit, the tension test specimens shall he machined to standard round 2 in. [5() mm] gage length tension test specimen described in Test Methods and Definitions A370.
11.3 In the case of small sections, which will not permit taking of the standard test specimen described in 11.2, the subsize round specimen shall be machined as described in Test Methods and Definitions A 370. The tension test specimen shall be as large as feasible.
11.4 The results of the tensile tests shall conform to the tensile properly requirements prescribed in the product specification.
11.5 If the results of tension tests do not conform to the reqUirements specified in the product specification, retests are permitted as outlined in Test Methods and Definitions A 370. If the results of any tension test specimen are less than specified because a Ilaw becomes evident in the test specimen during testing, a retest shall he allowed provided that the defect is not attributable to ruptures, cracks, or flakes in the steel.
12. Impact Requirements
12.1 The part shall conform to the impact requirements prescribed in the product specification.
12.2 Sampling for impact testing shall conform to the Product Specification.
12.3 If the average impact energy value meets the product specification requirements, but the energy value for OflC specimen is below the specified minimum value for individual specimens, a retest is permitted. This shall consist of two impact specimens from a location adjacent to, and on either side of, the specimen that failed. Each of the retested specimens must exhibit an energy value equal to or greater than the minimum average value required by the product specification.
13. Hydrostatic Test Requirements
13.1 Parts manufactured under this specification shall he capable of passing a hydrostatic test compatible with the rating of the finished part. Such tests shall he conducted by the supplier only when the hydrostatic test supplementary requirement in the product specification is invoked by the purchaser.
14.1 When onc or more representative test specimens or retest specimens do not conform to the requirements specified in the product specification for the tested characteristic, the product may he reworked according to the following requirements:
14.1.1 If previously tested in the unheat treated condition, the product may be reworked by heat treatment, and subsequently retested, in accordance with the product specification.
14.1.2 If previously tested in the heat treated condition, the product may be reworked by reheat treatment, and subsequently retested, in accordance with the product specification.
15. Finish and Appearance
15.1 The parts shall conform to the dimensions, tolerances, and finish as specified on the purchaser’s drawing or order.
15.2 The finished parts shall be cleaned to remove all scale and processing compounds prior to the final surface examination. The cleaning process shall not injure the surface finish, material properties, or the metallurgical structure. The cleaned parts shall he protected to prevent recontamination. Protective coatings on parts subsequently subjected to socket welds or butt welds shall be suitable.