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Norm

ASTM A 388/A 388M

Issue date: 2019 09 01

Standard Practice for Ultrasonic Examination of Steel Forgings

This practice covers the examination procedures for the contact, pulse-echo ultrasonic examination of heavy steel forgings by the straight and angle-beam techniques. An u...
Withdrawn: 2023 11 01
Publisher:
American Society for Testing and Materials
Format:
Digital | 9 Pages
Language:
English
This practice covers the examination procedures for the contact, pulse-echo ultrasonic examination of heavy steel forgings by the straight and angle-beam techniques. An ultrasonic, pulsed, reflection type of instrument shall be used and shall provide linear presentation for at least 75% of the screen height. The 5% linearity referred to is descriptive of the screen presentation of amplitude. The electronic apparatus shall contain an attenuator, search units, transducers, couplants, reference blocks, and DGS scales. The forging shall be machined to provide cylindrical surfaces for radial examination in the case of round forgings. The ends of the forgings shall be machined perpendicular to the axis of the forging for the axial examination. Faces of disk and rectangular forgings shall be machined flat and parallel to one another. The procedures to be performed are as follows: ultrasonic examination of the forgings; straight-beam examination with establishment of the instrument sensitivity and calibration either by the reflection, reference-block technique, or DGS method; and angle-beam examination used for rings and hollow forgings.

ASTM A 388/A 388M
2023 11 01
Standard Practice for Ultrasonic Examination of Steel Forgings
Norm
ASTM A 388/A 388M
2019 09 01
Standard Practice for Ultrasonic Examination of Steel Forgings
Norm
ASTM A 388/A 388M
2018 11 01
Standard Practice for Ultrasonic Examination of Steel Forgings
Norm
ASTM A 388/A 388Ma
2016 09 01
Standard Practice for Ultrasonic Examination of Steel Forgings
Norm
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Norm
ASTM A 388/A 388M
Issue date : 2023 11 01
Standard Practice for Ultrasonic Examination of Steel Forgings