ASTM-A388 › Standard Practice for Ultrasonic Examination of Steel Forgings
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Scope
1.1 This practice covers the examination procedures for the contact, pulse-echo ultrasonic examination of heavy steel forgings by the straight and angle-beam techniques. The straight beam techniques 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 specification states that forgings are to be subject to ultrasonic examination in accordance with Practice A388/A388M.
1.3 The values stated in either inch-pound or SI units are to be regarded as the standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.
1.4 This specification and the applicable material specifications are expressed in both inch-pound units and SI units. However, unless the order specifies the applicable "M" specification designation [SI units], the material shall be furnished to inch-pound units.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Keywords
angle beam examination; back-reflection; DGS; reference-block; straight beam examination; ultrasonic
To find similar documents by ASTM Volume:
01.05 (Steel--Bars, Forgings, Bearing, Chain, Tool)
To find similar documents by classification:
77.140.85 (Iron and steel forgings)
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Document Number
ASTM-A0388_A0388M-23
Revision Level
2023 EDITION
Status
Current
Modification Type
Reapproval
Publication Date
Nov. 17, 2023
Document Type
Practice
Page Count
9 pages
Committee Number
A01.06