ASTM A898/A898M-07

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Designation: A898/A898M – 07
Standard Specification for
Straight Beam Ultrasonic Examination of Rolled Steel
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Structural Shapes
This standard is issued under the fixed designationA898/A898M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
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1. Scope* 2.2 ASNT Standard:
SNT-TC-1A Recommended Practice for Personnel Qualifi-
1.1 This specification covers the procedure and acceptance
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cation and Certification in Nondestructive Testing
standards for straight beam, pulse echo, ultrasonic examination
of rolled structural shapes having a minimum section thickness
3. Ordering Information
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of ⁄2in.[12.5mm].Itwasdevelopedtoensuredeliveryofsteel
3.1 The inquiry and order should indicate the following:
structural shapes free of gross internal discontinuities such as
3.1.1 Acceptance level requirements will be Level II unless
pipe, ruptures, or laminations and is to be used whenever the
otherwise specified.
inquiry, contract, order, or specification states that the shapes
3.1.2 Any additions to the provisions of this specification as
are to be ultrasonically examined. Two levels of acceptance
outlined in 8.3.
standards are included. Level II is intended for normal appli-
3.1.3 Supplementary requirements, if any.
cations where freedom from gross internal discontinuities is
desired, particularly in connection regions. Level I is intended
4. Apparatus
for critical applications such as welded chord members used in
4.1 The manufacturer shall furnish suitable ultrasonic
tension loading, where internal discontinuities could be detri-
equipment and qualified personnel necessary for performing
mental. Level II is normally applicable unless otherwise
the examination. The equipment shall be straight beam, pulse-
specified in contract documents or the purchase order. Supple-
echo and span a nominal test frequency range of 1 to 5 MHz.
mentary requirements for alternative scanning coverages are
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The search unit shall be within the range of ⁄2 in. [12.5 mm] to
provided.
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1 ⁄8 in. [30 mm] in diameter or ⁄2 [12.5 mm] to 1 in. [25 mm]
1.2 The values stated in either inch-pound or SI units are to
square (including the pitch-catch type probe). The test shall be
be regarded separately as standard.Within the text, the SI units
performed by one of the following methods: contact, immer-
are shown in brackets.The values stated in each system are not
sion, or liquid column coupling.
exact equivalents; therefore, each system must be used inde-
4.2 Other search units may be used for evaluating and
pendentlyoftheother.Combiningvaluesfromthetwosystems
pin-pointing indications.
may result in nonconformance with the specification.
5. Personnel Qualification
2. Referenced Documents
2 5.1 Individualsperformingexaminationsinaccordancewith
2.1 ASTM Standards:
this specification shall be qualified and certified in accordance
A6/A6M SpecificationforGeneralRequirementsforRolled
with the requirements of the latest edition of ASNT SNT-
Structural Steel Bars, Plates, Shapes, and Sheet Piling
TC-1A or an equivalent accepted standard. An equivalent
E317 Practice for Evaluating Performance Characteristics
standard is one that covers the qualification and certification of
of Ultrasonic Pulse-Echo Testing Instruments and Systems
ultrasonic nondestructive examination candidates, and that is
without the Use of Electronic Measurement Instruments
acceptable to the purchaser.
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6. Test Conditions
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
6.1 Conduct the examination in an area free of operations
A01.02 on Structural Steel for Bridges, Buildings, Rolling Stock and Ships.
that interfere with proper functioning of equipment and testing
Current edition approved March 1, 2007. Published March 2007. Originally
published as A898/A898M – 90. Last previous edition A898/A898M – 91 (2001). personnel.
DOI: 10.1520/A0898_A0898M-07.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
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Standards volume information, refer to the standard’s Document Summary page on AvailablefromAmericanSocietyforNondestructiveTesting(ASNT),P.O.Box
the ASTM website. 28518, 1711 Arlingate Ln., Columbus, OH 43228-0518, http://www.asnt.org.
*A Summary of Changes section appears at the end of this standard.
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