ASTM A983/A983M-06(2016) PDF

Scope: 1.1 This specification covers continuous grain flow forged carbon and alloy steel crankshafts for medium speed diesel and natural gas engines.

1.2 The steel used in the manufacture of the forgings is required to be vacuum degassed.

1.3 The choice of steel composition grade for a given strength class is normally made by the forging supplier, unless otherwise specified by the purchaser.

1.4 Provision is made for treatment of designated surfaces of the crankshaft to provide enhanced fatigue strength, or wear resistance, or both.

1.5 Except as specifically required in this specification, all provisions of Specification A788/A788M apply.

1.6 Unless the order specifies the applicable “M” specification designation, the material shall be furnished to the inch-pound units.

1.7 The values stated in either inch-pound units or SI (metric) units are to be regarded separately as standard. Within the text and tables 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 A983/A983M-06(2016) Referenced Document

ASTM A370 Standard Test Methods and Definitions for Mechanical Testing of Steel Products
ASTM A503/A503M Standard Specification for Ultrasonic Examination of Forged Crankshafts
ASTM A788/A788M Standard Specification for Steel Forgings, General Requirements
ASTM A966/A966M Standard Test Method for Magnetic Particle Examination of Steel Forgings Using Alternating Current
ASTM A986/A986M Standard Specification for Magnetic Particle Examination of Continuous Grain Flow Crankshaft Forgings
ASTM E112 Standard Test Methods for Determining Average Grain Size
ASTM E340 Standard Practice for Macroetching Metals and Alloys
ASTM E45 Standard Test Methods for Determining the Inclusion Content of Steel
AWS D1.1 A Collection of Responses to Formal Inquiries about the Requirements of AWS D1.1 (1976-2008) (Second Edition)
JIS G 0555 Microscopic testing method for the non-metallic inclusions in steel

2021 ASTM A983/A983M-06(2021) Standard Specification for Continuous Grain Flow Forged Carbon and Alloy Steel Crankshafts for Medium Speed Diesel Engines
2006 ASTM A983/A983M-06(2016) Standard Specification for Continuous Grain Flow Forged Carbon and Alloy Steel Crankshafts for Medium Speed Diesel Engines
2006 ASTM A983/A983M-06(2011)e1 Standard Specification for Continuous Grain Flow Forged Carbon and Alloy Steel Crankshafts for Medium Speed Diesel Engines
2006 ASTM A983/A983M-06(2011) Standard Specification for Continuous Grain Flow Forged Carbon and Alloy Steel Crankshafts for Medium Speed Diesel Engines
2006 ASTM A983/A983M-06 Standard Specification for Continuous Grain Flow Forged Carbon and Alloy Steel Crankshafts for Medium Speed Diesel Engines
2005 ASTM A983/A983M-05 Standard Specification for Continuous Grain Flow Forged Carbon and Alloy Steel Crankshafts for Medium Speed Diesel Engines
2004 ASTM A983/A983M-04 Standard Specification for Continuous Grain Flow Forged Carbon and Alloy Steel Crankshafts for Medium Speed Diesel Engines
2001 ASTM A983/A983M-01 Standard Specification for Continuous Grain Flow Forged Carbon and Alloy Steel Crankshafts for Medium Speed Diesel Engines
1998 ASTM A983/A983M-98 Standard Specification for Continuous Grain Flow Forged Carbon and Alloy Steel Crankshafts for Medium Speed Diesel Engines