ASTM A490M-10
(Specification)Standard Specification for High-Strength Steel Bolts, Classes 10.9 and 10.9.3, for Structural Steel Joints (Metric)
Standard Specification for High-Strength Steel Bolts, Classes 10.9 and 10.9.3, for Structural Steel Joints (Metric)
ABSTRACT
This specification covers the chemical, mechanical, and metallurgical requirements for two types of heavy hex structural bolts made of quenched and tempered alloy steel and having specified tensile strengths and sizes. These bolts are intended for use in structural connections, and are furnished in nominal bolt diameters M12 through M36. They are designated by type denoting chemical composition as follows: Type 1—medium carbon alloy steel; and Type 3—weathering steel. The bolts shall conform to chemical requirements as examined by heat and product analysis. The bolts shall also be tested, and shall conform accordingly to specified requirements for mechanical properties such as Brinell hardness, Rockwell hardness, microhardness, tensile strength, yield strength, elongation, reduction of area, stress area, tensile load, and proof load; metallurgical properties such as carburization and decarburization; and dimensional properties such that for the head and body, and threads. The bolts shall undergo magnetic particle inspection as well for longitudinal discontinuities and transverse cracks.
SCOPE
1.1 This specification covers two types of quenched and tempered alloy steel, metric heavy hex structural bolts having a tensile strength of 1040 to 1210 MPa.
1.2 These bolts are intended for use in structural connections comparable to those covered under the requirements of the Specification for Structural Joints Using ASTM and bolts, approved by the Research Council on Structural Connections; endorsed by the American Institute of Steel Construction and by the Industrial Fastener Institute.
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Designation: A490M – 10
Standard Specification for
High-Strength Steel Bolts, Classes 10.9 and 10.9.3, for
1
Structural Steel Joints (Metric)
This standard is issued under the fixed designation A490M; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope* 2. Referenced Documents
3
1.1 This specification covers two types of quenched and 2.1 ASTM Standards:
tempered alloy steel, metric heavy hex structural bolts having A325 SpecificationforStructuralBolts,Steel,HeatTreated,
a tensile strength of 1040 to 1210 MPa. 120/105 ksi Minimum Tensile Strength
1.2 These bolts are intended for use in structural connec- A490 Specification for Structural Bolts, Alloy Steel, Heat
tions comparable to those covered under the requirements of Treated, 150 ksi Minimum Tensile Strength
the Specification for Structural Joints Using ASTM A325 and A490M SpecificationforHigh-StrengthSteelBolts,Classes
A490 bolts, approved by the Research Council on Structural 10.9 and 10.9.3, for Structural Steel Joints (Metric)
Connections; endorsed by the American Institute of Steel A563M Specification for Carbon and Alloy Steel Nuts
2
Construction and by the Industrial Fastener Institute. (Metric)
1.3 The bolts are furnished in nominal bolt diameters M12 A751 Test Methods, Practices, andTerminology for Chemi-
to M36, inclusive. They are designated by type denoting cal Analysis of Steel Products
chemical composition as follows: D3951 Practice for Commercial Packaging
E384 Test Method for Knoop and Vickers Hardness of
Type Description
Materials
Type 1 Medium carbon alloy steel
E709 Guide for Magnetic Particle Testing
Type 2 Withdrawn in 2002
E1444 Practice for Magnetic Particle Testing
Type 3 Weathering steel
F436M Specification for Hardened Steel Washers (Metric)
1.4 This specification is applicable to metric heavy hex
F568M Specification for Carbon andAlloy Steel Externally
structural bolts and alternate designs as established by the
Threaded Metric Fasteners (Metric)
ResearchCouncilinitspublication,SpecificationforStructural
F606M Test Methods for Determining the Mechanical
Joints Using ASTM A325 and A490 bolts.
Properties of Externally and InternallyThreaded Fasteners,
1.5 For inch-pound bolts, see Specification A490.
Washers, and Rivets (Metric)
1.6 The values stated in SI units are to be regarded as
F788/F788M Specification for Surface Discontinuities of
standard. No other units of measurement are included in this
Bolts, Screws, and Studs, Inch and Metric Series
standard.
F959M Specification for Compressible-Washer-Type Direct
1.7 The following safety hazards caveat pertains only to the
Tension Indicators for Use With Structural Fasteners (Met-
Test Methods portion, Section 13, of this specification: This
ric)
standard does not purport to address all of the safety concerns,
F1136M Specification for Zinc/Aluminum Corrosion Pro-
if any, associated with its use. It is the responsibility of the user
tective Coatings for Fasteners (Metric)
of this standard to establish appropriate safety and health
F1470 Practice for Fastener Sampling for Specified Me-
practices and determine the applicability of regulatory limita-
chanical Properties and Performance Inspection
tions prior to use.
F1789 Terminology for F16 Mechanical Fasteners
F2328M Test Method for Determining Decarburization and
Carburization in Hardened and Tempered Threaded Steel
Bolts, Screws and Studs (Metric)
1
This specification is under the jurisdiction of ASTM Committee F16 on
Fasteners and is the direct responsibility of Subcommittee F16.02 on Steel Bolts,
Nuts, Rivets and Washers.
Current edition approved Dec. 1, 2010. Published January 2011. Originally
3
approved in 1982. Last previous edition approved in 2009 as A 490M – 09a. For referenced ASTM standards, visit the ASTM webbiest, www.astm.org, or
DOI:10.1520/A0490M-10. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
2
Available from American Institute of Steel Construction (AISC), One E. Standards volume information, refer to the standard’s Document Summary page on
Wacker Dr., Suite 700, Chicago, IL 60601-2001, http://www.aisc.org. the ASTM webbiest.
*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
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A490M – 10
TABLE 1 Chemical Requirements for Type 1 Bolts
4.1.6 Other components such as nuts, washers, and washer-
type direct tension indicato
...
This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:A490M–09a Designation: A490M – 10
Standard Specification for
High-Strength Steel Bolts, Classes 10.9 and 10.9.3, for
1
Structural Steel Joints (Metric)
This standard is issued under the fixed designation A490M; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope*
1.1 This specification covers two types of quenched and tempered alloy steel, metric heavy hex structural bolts having a tensile
strength of 1040 to 1210 MPa.
1.2 These bolts are intended for use in structural connections comparable to those covered under the requirements of the
Specification for Structural Joints Using ASTM A325 and A490 bolts, approved by the Research Council on Structural
2
Connections; endorsed by the American Institute of Steel Construction and by the Industrial Fastener Institute.
1.3 The bolts are furnished in nominal bolt diameters M12 to M36, inclusive. They are designated by type denoting chemical
composition as follows:
Type Description
Type 1 Medium carbon alloy steel
Type 2 Withdrawn in 2002
Type 3 Weathering steel
1.4 This specification is applicable to metric heavy hex structural bolts and alternate designs as established by the Research
Council in its publication, Specification for Structural Joints Using ASTM A325 and A490 bolts.
1.5 For inch-pound bolts, see Specification A490.
1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.7 The following safety hazards caveat pertains only to the Test Methods portion, Section 13, of this specification: 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 and health practices and determine the applicability of regulatory limitations prior
to use.
2. Referenced Documents
3
2.1 ASTM Standards:
A325 Specification for Structural Bolts, Steel, Heat Treated, 120/105 ksi Minimum Tensile Strength
A490 Specification for Structural Bolts, Alloy Steel, Heat Treated, 150 ksi Minimum Tensile Strength
A490M Specification for High-Strength Steel Bolts, Classes 10.9 and 10.9.3, for Structural Steel Joints (Metric)
A563M Specification for Carbon and Alloy Steel Nuts (Metric)
A751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products
D3951 Practice for Commercial Packaging
E384 Test Method for Knoop and Vickers Hardness of Materials
E709 Guide for Magnetic Particle Testing
E1444 Practice for Magnetic Particle Testing
F436M Specification for Hardened Steel Washers (Metric)
F568M Specification for Carbon and Alloy Steel Externally Threaded Metric Fasteners (Metric)
F606M TestMethodsforDeterminingtheMechanicalPropertiesofExternallyandInternallyThreadedFasteners,Washers,and
Rivets (Metric)
1
This specification is under the jurisdiction of ASTM Committee F16 on Fasteners and is the direct responsibility of Subcommittee F16.02 on Steel Bolts, Nuts, Rivets
and Washers.
Current edition approved Nov.Dec. 1, 2009.2010. Published December 2009.January 2011. Originally approved in 1982. Last previous edition approved in 2009 as
A 490M – 09a. DOI:10.1520/A0490M-109A.
2
Available from American Institute of Steel Construction (AISC), One E. Wacker Dr., Suite 700, Chicago, IL 60601-2001, http://www.aisc.org.
3
ForreferencedASTMstandards,visittheASTMwebbiest,www.astm.org,orcontactASTMCustomerServiceatservice@astm.org.For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM webbiest.
*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 ----------------------
A490M – 10
TABLE 1 Chemical Requirements for Type 1 Bolts
Element Heat Analysis, % Product
Analysis, %
Carbon
For sizes through M30 0.30–0.48 0.28–0.50
For size M36 0.35–0.53 0.33–0.55
Phosphorus, max 0.040 0.045
Sulfur, max 0.040 0.045
Alloying Elements → See 6.1←
TABLE 2 Chemical Requirements for Type 3 Bolts
Element Heat Analysis, % Product Analysis, %
Carbon
Sizes M20 and smaller 0.20–0.53 0.19–0.55
Sizes larger than M20. 0.30–0.53 0
...
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