ASME SA-727-SA-727M-2021 pdf download.SPECIFICATION FOR CARBON STEEL FORGINGS FOR PIPING COMPONENTS WITH INHERENT NOTCH TOUGHNESS.
3. General Requirements and Ordering Information 3.1 Productfurnishedto this specificationshallconform to the requirements of Specification A 961 /A 961M, including any supplementary requirements that are indi- cated in the purchase order. Failure to comply with the requirements of Specification A 961 /A 961M constitutes nonconformance with this specification. In case of a con- flict between the requirements of this specification and Specification A 961 /A 961M, this specification shall prevail. 3.2 It is the purchaser’s responsibility to specify in the purchase order all ordering information necessary to purchase the needed material. Examples of such informa- tion include but are not limited to the following: 3.2.1 Additional requirements (see 15.1 and 15.2).
4. Materials and Manufacture 4.1 The steel shall be made by one or more of the following processes: open-hearth, basic-oxygen, or elec- tric-furnace, and shall be fully killed, fine-grain practice. 4.2 Forgings shall be manufactured from ingots, blooms, billets, slabs, or bars. These items shall be forged, rolled, or strandcast. 4.3 A sufficient discard shall be made from the ingot to secure freedom from injurious piping and undue segre- gation. 4.4 The finishedproductshall be aforging as definedby the Terminology section of Specification A 788/A 788M.
5. Heat Treatment 5.1 Following plastic working, the forging manufac- turer shall heat treat the forgings by normalizing, or nor- malizing and tempering, or quenching and tempering. 5.1.1 Normalizing — The procedure for normalizing shallconsistofuniformly heating the forgings to atempera- ture between 1550 and 1700°F [845 and 925°C], holding a sufficient time to attain uniform temperature throughout, and cooling in still air. The forging shall be atatemperature below 1000°F [540°C] before heating for normalizing. 5.1.2 Quenching — The procedure for quenching shall consist ofuniformly heating the forging to a tempera- ture between 1550 and 1700°F [845 and 925°C], holding a sufficient time to attain uniform temperature throughout, and quenching into a suitable liquid medium. The forging shall be at a temperature below 1000°F [540°C] before heating for quenching.
7. Mechanical Requirements 7.1 Tension Tests: 7.1.1 Requirements — The material shall conform to requirements for tensile properties prescribed in Table 2. 7.1.1.1 The test specimen shall be obtained from a rough or finished production forging, or prolongation thereof, or it may be obtained from separately forged test blanks from the same heat of steel as the production forg- ing. The test blank shall be reduced by forging in a manner similar to that for the products represented, shall receive approximately the same hot working and reduction, be of the same nominal thickness, and receive the same heat treatment as the finished products represented. The test material shall be treated in the same furnace at the same time as the forging itrepresents, subjectto the requirements of 7.1.2.1. 7.1.2 Number of Tests — One tension test at room temperature shall be made for each nominal wall thickness ± 1 ⁄ 4 in. [± 6 mm] from each heat in each heat treatment charge. 7.1.2.1 If heat treatment is performed in either a continuous or a batch-type furnace controlled within ± 25°F [± 14°C] of the required heat-treatment temperature, and equipped with recording pyrometers so that complete records ofheat treatment are available and ifthe same heat treating cycles are used on the forgings represented by the tension test, then one tension test per nominal wall thick- ness ± 1 ⁄ 4 in. [± 6 mm] from each heat shall be required, instead ofone tension test per nominal wall thickness from each heat in each heat-treatment charge.ASME SA-727-SA-727M pdf download.