A388/A388M-19 Standard Practice for Ultrasonic Examination of Steel Forgings

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Designation: A388/A388M -19 Standard Practice for Ultrasonic Examination of Steel Forgings11. Scope@1.1 This practice2 covers the examination procedures for thecontact. pullsc-ccho ultrasonic examination of stcel forgings bythe straight and angle-beam techniques.The straight beamtechniques include utilization of the DGS (Distance Gain-Size)method. See Appendix X3.1.2 This practice is to be used whenever the inquiry.contract,order,or spccification states that forgings are to besubject to ultrasonic examination in accordance with PracticeA388/A388M.1.3 Supplementary requirements of an optional nature areprovided for use at the option of the purchaser.The supple-mentary requirements shall apply only when specified indi-vidually by the purchaser in the purchase order or contract.1.4 The values stated in either Sl units or inch-pound unitsare to be regarded separately as standard. The values stated ineach system may not be exact equivalents; therefore.eachsystem shall be used independently of the other. Combiningvalues from the two systems may result in non-conformancewith the standard.1.5This specification and the applicable material specifica-tions are expressed in both inch-pound uni

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