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ASTM
A577/A577M-17
Standard Specification for Ultrasonic Angle-Beam Examination of Steel Plates
2017
3
ASTM Vol.01.04 (2022)
This specification2 covers an ultrasonic angle-beam procedure and acceptance standards for the detection of internal discontinuities not laminar in nature and of surface imperfections in a steel plate. This specification is intended for use only as a supplement to specifications which provide straight-beam ultrasonic examination.
NOTE 1: An internal discontinuity that is laminar in nature is one whose principal plane is parallel to the principal plane of the plate.
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