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ASTM A983/A983M-06

(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

ABSTRACT
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.
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 A 788/A 788M 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.

General Information

Status
Historical
Publication Date
31-Aug-2006
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-05 - Standard Specification for Continuous Grain Flow Forged Carbon and Alloy Steel Crankshafts for Medium Speed Diesel Engines
Effective Date
01-Sep-2006
Replaced By
ASTM A983/A983M-06(2011) - Standard Specification for Continuous Grain Flow Forged Carbon and Alloy Steel Crankshafts for Medium Speed Diesel Engines
Effective Date
01-Apr-2011
Referred By
ASTM A986/A986M-01(2021) - Standard Specification for Magnetic Particle Examination of Continuous Grain Flow Crankshaft Forgings
Effective Date
01-Sep-2006
Referred By
ASTM A456/A456M-08(2023) - Standard Specification for Magnetic Particle Examination of Large Crankshaft<brk/> Forgings
Effective Date
01-Sep-2006
Referred By
ASTM A788/A788M-23 - Standard Specification for Steel Forgings, General Requirements
Effective Date
01-Sep-2006

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ASTM A983/A983M-06 - Standard Specification for Continuous Grain Flow Forged Carbon and Alloy Steel Crankshafts for Medium Speed Diesel EnginesASTM A983/A983M-06 - Standard Specification for Continuous Grain Flow Forged Carbon and Alloy Steel Crankshafts for Medium Speed Diesel Engines
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ASTM A983/A983M-06 - 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: A983/A983M – 06
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 designationA983/A983M; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope* A966/A966M Practice for Magnetic Particle Examination
of Steel Forgings Using Alternating Current
1.1 This specification covers continuous grain flow forged
A986/A986M Specification for Magnetic Particle Examina-
carbon and alloy steel crankshafts for medium speed diesel and
tion of Continuous Grain Flow Crankshaft Forgings
natural gas engines.
E45 Test Methods for Determining the Inclusion Content of
1.2 The steel used in the manufacture of the forgings is
Steel
required to be vacuum degassed.
E112 Test Methods for Determining Average Grain Size
1.3 The choice of steel composition grade for a given
E340 Test Method for Macroetching Metals and Alloys
strength class is normally made by the forging supplier, unless
2.2 Other Standards:
otherwise specified by the purchaser.
3
AWS D1.1 Structural Welding Code
1.4 Provision is made for treatment of designated surfaces
4
DIN 50 602
of the crankshaft to provide enhanced fatigue strength, or wear
JIS G 0555 Microscopic Testing Method for the Non-
resistance, or both.
5
Metallic Inclusions in Steel
1.5 Except as specifically required in this specification, all
provisions of Specification A788/A788M apply.
3. Ordering Information
1.6 Unless the order specifies the applicable “M” specifica-
3.1 In addition to the ordering requirements of Specification
tion designation, the material shall be furnished to the inch-
A788/A788M, the following items should be included:
pound units.
3.2 Choice of mechanical property class from Table 1.
1.7 The values stated in either inch-pound units or SI
3.3 Choice of chemical composition Grade from Table 2 if
(metric) units are to be regarded separately as standard. Within
this purchaser option is exercised (4.1.3).
the text and tables the SI units are shown in brackets. The
3.4 Whether surface hardening in designated areas is re-
values stated in each system are not exact equivalents; there-
quired, referencing Supplementary Requirements S10, S11, or
fore, each system shall be used independently of the other.
S12, and providing the necessary instructions.
Combining values from the two systems may result in noncon-
3.5 For crankshafts designed to include welded counter-
formance with the specification.
weightsthepurchasermayspecifyanalternateweldingcodeto
2. Referenced Documents AWS D1.1 Structural Welding Code.
2
3.6 For alternate tensile and hardness test requirements
2.1 ASTM Standards:
specify Supplementary Requirement S2.
A370 Test Methods and Definitions for Mechanical Testing
of Steel Products
4. Materials and Manufacture
A503/A503M Specification for Ultrasonic Examination of
4.1 Melting Practice:
Forged Crankshafts
4.1.1 The steel making section of Specification A788/
A788/A788M Specification for Steel Forgings, General Re-
A788M shall apply together with mandatory vacuum degas-
quirements
sing.
4.1.2 Supplementary Requirement S1 may be used if non-
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
metallic inclusion rating of the steel is required.
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
A01.06 on Steel Forgings and Billets.
Current edition approved Sept. 1, 2006. Published September 2006. Originally
3
approved in 1998. Last previous edition approved in 2005 as A983/A983M – 05. Available from American Welding Society, 550 NW Le Jeune Rd., Miami, FL
DOI: 10.1520/A0983_A0983M-06. 33126.
2 4
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from Verlag Stahleisen mbh, Postfach 8229, D-4000 Dusseldorf,
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Germany.
5
Standards volume information, refer to the standard’s Document Summary page on Available from Japanese Standards Association, 1-24 Akasaka 4, Minato-Ku,
the ASTM website. Tokyo 107, Japan.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
A983/A983M – 06
TABLE 1 Tensile and Hardness Requirements
Class 1 Class 2 Class 3 Class 4 Class 5 Class 6 Class 7
Tensile Strength, ksi [Mpa] min 80 [550] 100 [690] 110 [760] 120 [830] 130 [900] 140 [965] 150 [1035]
Yield Strength, (0.2% offset), ksi [Mpa] min
...

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ASTM A983/A983M-06(2021)(Specification)
Standard Specification for Continuous Grain Flow Forged Carbon and Alloy Steel Crankshafts for Medium Speed Diesel Engines

ABSTRACT
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.
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 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.  
1.8 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.

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ASTM D7468-22(Test Method)
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SIGNIFICANCE AND USE
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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1.1 The test method covers a heavy-duty diesel engine test procedure conducted under high soot conditions to evaluate oil performance with regard to valve train wear, top ring wear, sludge deposits, and oil filter plugging in an EGR environment. This test method is commonly referred to as the Cummins ISM Test.2  
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1.2.1 Exception—The only exception is where there is no direct SI equivalent such as screw threads, national pipe threads/diameters, tubing sizes, or where there is a sole source of supply equipment specification.  
1.3 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. See Annex A1 for general safety precautions.  
1.4 Table of Contents:    
Section  
Scope  
1  
Referenced Documents  
2  
Terminology  
3  
Summary of Test Method  
4  
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  
Oil Pan Modification  
6.1.4  
Engine Control Module (ECM)  
6.1.5  
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Intake Manifold Temperature Sensor  
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Barometric Pressure Sensor  
6.1.8  
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Aftercooler  
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Exhaust System  
6.2.4  
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6.2.5  
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Engine and Cleaning Fluids  
7  
Test Oil  
7.1  
Test Fuel  
7.2  
Engine Coolant  
7.3  
Pentane  
7.4  
Solvent  
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  
Rocker Cover and Oil Pan  
8.1.4  
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8.1.5  
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Standard Test Method for Conducting Friction Tests of Piston Ring and Cylinder Liner Materials Under Lubricated Conditions

SIGNIFICANCE AND USE
5.1 The efficiency and fuel economy of spark ignition and diesel engines is affected in part by the friction between moving parts. Although no reliable, in situ friction measurements exist for fired internal combustion engines, it has been estimated that at least half of the friction losses in such engines are due to those at the ring and liner interface. This test method involves the use of a reciprocating sliding arrangement to simulate the type of oscillating contact that occurs between a piston ring and its mating cylinder bore surface near the top-dead-center position in the cylinder where most severe surface contact conditions occur. There are many types of engines and engine operating environments; therefore, to allow the user the flexibility to tailor this test to conditions representative of various engines, this standard test method allows flexibility in selecting test loads, speeds, lubricants, and durations of testing. Variables that can be adjusted in this procedure include: normal force, speed of oscillation, stroke length, duration of testing, temperature of testing, method of specimen surface preparation, and the materials and lubricants to be evaluated. Guidance is provided here on the set-up of the test, the manner of specimen fixturing and alignment, the selection of a lubricant to simulate conditioned oil characteristics (for a diesel engine), and the means to run-in the ring specimens to minimize variability in test results.  
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1.1 This test method covers procedures for conducting laboratory bench-scale friction tests of materials, coatings, and surface treatments intended for use in piston rings and cylinder liners in diesel or spark-ignition engines. The goal of this procedure is to provide a means for preliminary, cost-effective screening or evaluation of candidate ring and liner materials. A reciprocating sliding arrangement is used to simulate the contact that occurs between a piston ring and its mating liner near the top-dead-center position in the cylinder where liquid lubrication is least effective, and most wear is known to occur. Special attention is paid to specimen alignment, running-in, and lubricant condition.  
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ABSTRACT
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.  
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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.  
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SCOPE
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Standard Specification for Precipitation-Hardening and Cold Worked Nickel Alloy Bars, Forgings, and Forging Stock for Moderate or High Temperature Service

ABSTRACT
This specification covers hot- and cold-worked precipitation-hardenable nickel alloy rod, bar, forgings, and forging stock for high-temperature service. Chemical analysis shall be performed on the alloy and shall conform to the chemical composition requirement in carbon, manganese, silicon, phosphorus, sulfur, chromium, cobalt, molybdenum, columbium, tantalum, titanium, aluminum, zirconium, boron, iron, copper, and nickel. The material shall follow recommended annealing treatment, solution treatment, stabilizing treatment, and precipitation hardening treatment. Tension testing, hardness testing and stress-rupture testing shall be performed on the material and shall comply to the required tensile strength, yield strength, elongation, reduction in area, and Brinell hardness.
SCOPE
1.1 This specification2 covers hot- and cold-worked precipitation-hardenable nickel alloy rod, bar, forgings, and forging stock for moderate or high temperature service (Table 1).  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.3 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 become familiar with all hazards including those identified in the appropriate Safety Data Sheet (SDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental practices, and determine the applicability of regulatory limitations prior to use.  
1.4 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.

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  • Technical specification
    7 pages
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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