ASTM A986/A986M-01
Standard Specification for Magnetic Particle Examination of Continuous Grain Flow Crankshaft Forgings

Standard No.

ASTM A986/A986M-01

Release Date

2001

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM A986/A986M-01(2006)

Latest

ASTM A986/A986M-01(2021)

Scope

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.

ASTM A986/A986M-01 history

• 2021 ASTM A986/A986M-01(2021) Standard Specification for Magnetic Particle Examination of Continuous Grain Flow Crankshaft Forgings
• 2001 ASTM A986/A986M-01(2016) Standard Specification for Magnetic Particle Examination of Continuous Grain Flow Crankshaft Forgings
• 2001 ASTM A986/A986M-01(2011) Standard Specification for Magnetic Particle Examination of Continuous Grain Flow Crankshaft Forgings
• 2006 ASTM A986/A986M-01(2006) Standard Specification for Magnetic Particle Examination of Continuous Grain Flow Crankshaft Forgings
• 2001 ASTM A986/A986M-01 Standard Specification for Magnetic Particle Examination of Continuous Grain Flow Crankshaft Forgings
• 1998 ASTM A986/A986M-98 Standard Specification for Magnetic Particle Examination of Continuous Grain Flow Crankshaft Forgings