ASTM-A966 1996

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A966/A966M-96 Standard Test Method for Magnetic Particle Examination of Steel Forgings Using Alternating Current

Published By	Publication Date	Number of Pages
ASTM	1996	6

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Description

ASTM A966/A966M-96

Historical Standard: Standard Test Method for Magnetic Particle Examination of Steel Forgings Using Alternating Current

ASTM A966/A966M

Scope

1.1 This test method covers a procedure for the magnetic particle examination of steel forgings using alternating current as the power source. The procedure will produce consistent results upon which acceptance standards can be based. This test method does not contain acceptance limits or recommended quality levels.

1.2 Only alternating 50-60 cycle current shall be used as the electric power source for any of the magnetizing methods. The ability to detect subsurface discontinuities is very limited when using an alternating power source , and therefore the test surfaces should be in the final thermally treated and finish machined condition.

1.3 When subsurface indications are sought in forgings, then dc magnetization in accordance with Test Method A 275/A 275M should be used.

1.4 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 independent of the other. Combining values from the two systems may result in nonconformance with the specification. Unless the order specifies the applicable “M” specification designation [SI units], the inch-pound units shall be used.

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

ac magnetization; circular magnetization; dry method; ferritic steel forgings; fluorescent method; longitudinal magnetization; surface flaw detection; wet method

ICS Code

ICS Number Code n/a

DOI: 10.1520/A0966_A0966M-96

Additional information

Standard Title	A966/A966M-96 Standard Test Method for Magnetic Particle Examination of Steel Forgings Using Alternating Current
Published Code	ASTM
Publication Date	1996
Pages Count	6