ASTM A903/A903M-99(2003)
(Specification)Standard Specification for Steel Castings, Surface Acceptance Standards, Magnetic Particle and Liquid Penetrant Inspection
Standard Specification for Steel Castings, Surface Acceptance Standards, Magnetic Particle and Liquid Penetrant Inspection
SCOPE
1.1 This specification covers acceptance criteria for the surface inspection of steel castings when nondestructively examined by magnetic particle or liquid penetrant inspection.
1.2 This specification is to be used wherever the inquiry, contract, order, or specification states that the acceptance standards for magnetic particle or liquid penetrant inspection shall be in accordance with Specification A 903/A 903M.
1.3 The values stated in either inch-pound units or SI units are to be regarded separately as 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 a nonconformance with this specification.
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Designation: A 903/A 903M – 99 (Reapproved 2003)
Standard Specification for
Steel Castings, Surface Acceptance Standards, Magnetic
Particle and Liquid Penetrant Inspection
This standard is issued under the fixed designationA903/A903M; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope 4. Ordering Information
1.1 This specification covers acceptance criteria for the 4.1 The inquiry and order should indicate the following
surface inspection of steel castings when nondestructively information:
examined by magnetic particle or liquid penetrant inspection. 4.1.1 Nondestructive Practice—Practice E 165 for liquid
1.2 This specification is to be used wherever the inquiry, penetrant inspection or Guide E 709 for magnetic particle
contract, order, or specification states that the acceptance inspection. Unless a specific technique within a practice is
standards for magnetic particle or liquid penetrant inspection specified, the choice shall be the option of the manufacturer.
shall be in accordance with Specification A 903/A 903M. 4.1.2 Personnel Qualifications.
1.3 The values stated in either inch-pound units or SI units 4.1.3 Extent of Inspection—The number of castings and the
are to be regarded separately as standard.Within the text the SI extent of casting surfaces to be examined.
units are shown in brackets. The values stated in each system 4.1.4 Acceptance Level—If more than one acceptance level
are not exact equivalents; therefore each system must be used is specified for different locations, a nondestructive test draw-
independently of the other. Combining values from the two ing identifying acceptance levels and locations should accom-
systems may result in a nonconformance with this specifica- pany the inquiry and order.
tion. 4.1.5 Supplementary Requirements, if any.
2. Referenced Documents 5. Personnel Qualifications
2.1 ASTM Standards: 5.1 Personnel performing examination shall be qualified in
E 165 Test Method for Liquid Penetrant Examination accordance with an acceptable written procedure as agreed
E 709 Guide for Magnetic Particle Examination upon between the purchaser and manufacturer.
3. Terminology 6. Evaluation of Indications
3.1 Definitions: 6.1 All relevant indications shall be evaluated in terms of
3.1.1 linear indications—an indication whose length is the acceptance criteria.
equal to or greater than three times its width shall be classified 6.2 Mechanical discontinuities are indicated by bleed-out of
as a linear indication. the penetrant or retention of the magnetic particle examination
3.1.2 nonlinear indications—an indication whose length is medium. However, false indications may be produced by
less than three times its width shall be classified as nonlinear. localized surface irregularities, metallurgical discontinuities, or
3.1.3 relevant indications—relevant indications are indica- magnetic permeability variations. Any indication in excess of
tions which result from mechanical discontinuities. Only indi- the acceptance criteria which is believed to be false may be
cations whose major dimension exceeds ⁄16 in. [1.6 mm] shall reexamined. Surface conditioning may precede reexamination.
be considered relevant. When agreed upon between the manufacturer and purchaser,
the liquid penetrant method may be used to verify the presence
of surface discontinuities which had been previously indicated
by the magnetic particle method.
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel, and RelatedAlloys and is the direct responsibility of Subcommittee
6.3 Broad areas of fluorescence, pigmentation, or particle
A01.18 on Castings.
accumulation which may mask indications of discontinuities
Current edition approved Oct. 1, 2003. Published October 2003. Originally
are unacceptable, and such areas
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