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ASTM A983/A983M-01

(Specification)

Standard Specification for Continuous Grain Flow Forged Carbon and Alloy Steel Crankshafts for Medium Speed Diesel Engines

Standard Specification for Continuous Grain Flow Forged Carbon and Alloy Steel Crankshafts for Medium Speed Diesel Engines

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 Provision is made for treatment of designated surfaces of the crankshaft to provide enhanced fatigue strength, or wear resistance, or both.
1.4 The values stated in either inch-pound units or SI (metric) units are to be regarded separately as standards. 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 must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.
1.5 Unless the order specifies the applicable "M" specification designation, the material shall be furnished to the inch-pound units.
1.6 Except as specifically required in this specification, all provisions of Specification A 788 apply.

General Information

Status
Historical
Publication Date
09-Sep-2001
ICS
27.020 - Internal combustion engines
Technical Committee
A01 - Steel, Stainless Steel and Related Alloys
Drafting Committee
A01.06 - Steel Forgings and Billets
Current Stage
Ref Project

Relations

Replaces
ASTM A983/A983M-98 - Standard Specification for Continuous Grain Flow Forged Carbon and Alloy Steel Crankshafts for Medium Speed Diesel Engines
Effective Date
10-Sep-2001
Referred By
ASTM A986/A986M-01(2021) - Standard Specification for Magnetic Particle Examination of Continuous Grain Flow Crankshaft Forgings
Effective Date
10-Sep-2001
Referred By
ASTM A456/A456M-08(2023) - Standard Specification for Magnetic Particle Examination of Large Crankshaft<brk/> Forgings
Effective Date
10-Sep-2001
Referred By
ASTM A788/A788M-23 - Standard Specification for Steel Forgings, General Requirements
Effective Date
10-Sep-2001

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ASTM A983/A983M-01 - Standard Specification for Continuous Grain Flow Forged Carbon and Alloy Steel Crankshafts for Medium Speed Diesel EnginesASTM A983/A983M-01 - Standard Specification for Continuous Grain Flow Forged Carbon and Alloy Steel Crankshafts for Medium Speed Diesel Engines
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ASTM A983/A983M-01 - Standard Specification for Continuous Grain Flow Forged Carbon and Alloy Steel Crankshafts for Medium Speed Diesel Engines
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Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: A 983/A 983M – 01
Standard Specification for
Continuous Grain Flow Forged Carbon and Alloy Steel
1
Crankshafts for Medium Speed Diesel Engines
This standard is issued under the fixed designation A 983/A 983M; 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 A 986/A 986M Specification for Magnetic Particle Exami-
3
nation of Continuous Grain Flow Crankshaft Forgings
1.1 This specification covers continuous grain flow forged
E 45 Practice for Determining the Inclusion Content of
carbon and alloy steel crankshafts for medium speed diesel and
4
Steel
natural gas engines.
4
E 112 Test Methods for Determining Average Grain Size
1.2 The steel used in the manufacture of the forgings is
4
E 340 Test Method for Macro Etching Metals and Alloys
required to be vacuum degassed.
2.2 Other Standards:
1.3 Provision is made for treatment of designated surfaces
5
AWS D1.1 Structural Welding Code
of the crankshaft to provide enhanced fatigue strength, or wear
6
DIN 50 602
resistance, or both.
7
JIS G 0555
1.4 The values stated in either inch-pound units or SI
(metric) units are to be regarded separately as standards.
3. Ordering Information
Within the text and tables the SI units are shown in brackets.
3.1 In addition to the ordering requirements of Specification
The values stated in each system are not exact equivalents,
A 788, the following items should be included:
therefore each system must be used independently of the other.
3.2 Whether surface hardening in designated areas is re-
Combining values from the two systems may result in noncon-
quired, referencing Supplementary Requirements S10, S11, or
formance with the specification.
S12, and providing the necessary instructions.
1.5 Unless the order specifies the applicable “M” specifica-
3.3 For crankshafts designed to include welded counter-
tion designation, the material shall be furnished to the inch-
weights the purchaser may specify an alternate welding code to
pound units.
AWS D1.1 Structural Welding Code.
1.6 Except as specifically required in this specification, all
3.4 For alternate tensile and hardness test requirements
provisions of Specification A 788 apply.
specify Supplementary Requirement S2.
2. Referenced Documents
4. Materials and Manufacture
2.1 ASTM Standards:
4.1 Melting Practice:
A 370 Test Methods and Definitions for Mechanical Testing
2 4.1.1 The steel making section of Specification A 788 shall
of Steel Products
apply together with mandatory vacuum degassing.
A 503 Specification for Ultrasonic Examination of Forged
3 4.1.2 Supplementary Requirement S1 may be used if non-
Crankshafts
metallic inclusion rating of the steel is required.
A 788 Specification for Steel Forgings, General Require-
3 4.2 Forging:
ments
4.2.1 The use of bar from starting stock produced by slitting
A 966/A 966M Test Method for Magnetic Particle Exami-
3
a rectangular section is not permitted.
nation of Steel Forgings Using Alternate Current
1 4
This specification is under the jurisdiction of ASTM Committee A01 on Steel, Annual Book of ASTM Standards, Vol 03.01.
5
Stainless Steel, and Related Alloys and is the direct responsibility of Subcommittee Available from American Welding Society, 550 NW Le Jeune Rd., Miami, FL
A01.06 on Steel Forgings and Billets. 33126.
6
Current edition approved Sept. 10, 2001. Published November 2001. Originally Available from Verlag Stahleisen mbh, Postfach 8229, D-4000 Dusseldorf,
published as A 983/A 983M–98. Last previous edition A 983/A 983M–98. Germany.
2 7
Annual Book of ASTM Standards, Vol 01.03. Available from Japanese Standards Association, 1-24 Akasaka 4, Minato-Ku,
3
Annual Book of ASTM Standards, Vol 01.05. Tokyo 107, Japan.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
A 983/A 983M – 01
4.2.2 The procedure used in forging the crankshaft shall or another similar welding code acceptable to the purchaser.
ensure that the centerline of the starting forged or rolled bar This procedure shall contain instructions concerning repair of
will follow the centerline contour of the main bearings, webs, counterweight welds, including preheat and post weld heat
and crankpins of the crankshaft. treatment requirements.
4.2.3 The grain flow present between adjacent main bearing
journals, webs, and the intervening crankpin shall be demon- 5. Chemical Composition
strated for the first article testing of a new crankshaft design by
5.1 Heat Analysis— The heat analysis obtained after sam-
a given forging facility. This
...

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This specification deals with continuous grain flow carbon and alloy steel crankshaft forgings intended for medium speed diesel and natural gas engines. The steel used in the manufacture of the forgings is required to be vacuum degassed. Heat treatment, which may be done either before or after rough machining, shall consist of normalizing followed by tempering at a subcritical temperature, or austenitizing, liquid quenching and subcritical tempering. Charpy impact and tensile tests, which shall be performed at a frequency of one test per heat treatment load, shall be used to evaluate tensile strength, yield strength, elongation, reduction of area, and Brinell hardness requirements of forgings. Chemical composition requirements shall also be examined by heat analysis. Grain size tests and non-destructive magnetic particle examinations shall be conducted as well. When required by the purchaser, crankshafts may be surface hardened in designated areas for the purposes of enhanced wear resistance and fatigue strength.
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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.  
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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 necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.  
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5.1 This test method was developed to assess the performance of an engine oil to control engine wear and deposits under heavy-duty operating conditions selected to accelerate soot generation, valve train wear, and deposit formation in a turbocharged, aftercooled four-stroke-cycle diesel engine equipped with exhaust gas recirculation hardware.  
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1.4 Table of Contents:    
Section  
Scope  
1  
Referenced Documents  
2  
Terminology  
3  
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Significance and Use  
5  
Apparatus  
6  
Test Engine Configuration  
6.1  
Test Engine  
6.1.1  
Oil Heat Exchanger, Adapter Blocks, Block Off Plate  
6.1.2  
Oil Filter Head Modification  
6.1.3  
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Engine Control Module (ECM)  
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Barometric Pressure Sensor  
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6.2.2  
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6.2.3  
Exhaust System  
6.2.4  
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6.2.5  
Fuel System  
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7  
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7.3  
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7.4  
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7.5  
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8  
Cleaning of Parts  
8.1  
General  
8.1.1  
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8.1.2  
Cylinder Head  
8.1.3  
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ASTM
ASTM D8139-23(Specification)
Standard Specification for Semi-Rigid, Closed-Cell Polypropylene Foam, Preformed Expansion Joint Fillers for Concrete Paving and Structural Construction

SCOPE
1.1 This specification covers preformed expansion joint fillers made from closed-cell polypropylene foam materials having suitable compressibility, recovery from compression, nonextruding, and weather-resistant characteristics.  
1.1.1 Type I, closed-cell polypropylene foam.  
1.2 These joint fillers are intended for use in concrete pavements in full-depth joints. There are several variations in size with typical thicknesses of 1/2 in. (12.7 mm), 3/4 in. (19.05 mm), and 1 in. (25.4 mm); typical widths of 31/2 in. (88.9 mm), 4 in. (101.6 mm), 5 in. (127 mm), 6 in. (152.5 mm), 7 in. (177.8 mm), 8 in. (203.2 mm), or 48 in. (1.2 m) sheet; and typical lengths of 5 ft (1.52 m) and 10 ft (3.05 m).  
1.3 The values stated in inch-pound units are to be regarded as the standard.  
1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Technical specification
    2 pages
    English language
    sale 15% off
  • Technical specification
    2 pages
    English language
    sale 15% off