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ASTM A986/A986M-01

Historical Revision

Standard Specification for Magnetic Particle Examination of Continuous Grain Flow Crankshaft Forgings

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1.1 This specification covers the magnetic particle examination of forged continuous grain flow (CGF) crankshafts intended for medium speed diesel engines.

1.2 For the purpose of magnetic particle indication assessment, the crankshaft is divided into four zones of decreasing operational stress. Acceptance criteria have been set for each zone.

1.3 The engines to which these crankshafts are fitted are commonly used for diesel electric locomotives, marine propulsion, and power generation. Engines fueled by natural gas also fall into this medium speed category.

1.4 Specification A 983/A 983M is a product specification that covers the manufacture of CGF crankshafts.

1.5 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 shall be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.


SDO ASTM: ASTM International
Document Number A986
Publication Date Sept. 10, 2001
Language en - English
Page Count 3
Revision Level 01
Supercedes
Committee A01.06
Publish Date Document Id Type View
Sept. 10, 2001 A0986_A0986M-98 Revision
Sept. 10, 2001 A0986_A0986M-01 Revision
March 1, 2021 A0986_A0986M-01R21 Reaffirmation
Sept. 1, 2016 A0986_A0986M-01R16 Reaffirmation
April 1, 2011 A0986_A0986M-01R11 Reaffirmation
March 1, 2006 A0986_A0986M-01R06 Reaffirmation