ASTM A490M-12
(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.
1.3 The bolts are furnished in nominal bolt diameters M12 to M36, inclusive. They are designated by type denoting chemical composition as follows:
TypeDescription Type 1Medium carbon alloy steel Type 2Withdrawn in 2002 Type 3Weathering 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 and 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.
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 smaller0.20–0.530.19–0.55 Sizes larger than M20.0.30–0.530.28–0.55 Manganese, min0.40 0.37 Phosphorus, max0.0350.040 Sulfur, max0.0400.045 Copper0.20–0.600.17–0.63 Chromium, min0.45 0.42 Nickel, min
or0.20 0.17 Molybdenum, min0.15 0.14
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Designation: A490M −12
StandardSpecification 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.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
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 A325Specification for Structural Bolts, Steel, Heat Treated,
a tensile strength of 1040 to 1210 MPa. 120/105 ksi Minimum Tensile Strength
A490Specification for Structural Bolts, Alloy Steel, Heat
1.2 These bolts are intended for use in structural connec-
Treated, 150 ksi Minimum Tensile Strength
tions comparable to those covered under the requirements of
A490MSpecification for High-Strength Steel Bolts, Classes
the Specification for Structural Joints Using ASTM A325 and
10.9 and 10.9.3, for Structural Steel Joints (Metric)
A490 bolts, approved by the Research Council on Structural
A563MSpecificationforCarbonandAlloySteelNuts(Met-
Connections; endorsed by the American Institute of Steel
2 ric)
Construction and by the Industrial Fastener Institute.
A751Test Methods, Practices, and Terminology for Chemi-
1.3 The bolts are furnished in nominal bolt diameters M12
cal Analysis of Steel Products
to M36, inclusive. They are designated by type denoting
D3951Practice for Commercial Packaging
chemical composition as follows:
E384Test Method for Knoop and Vickers Hardness of
Type Description
Materials
E709Guide for Magnetic Particle Testing
Type 1 Medium carbon alloy steel
E1444Practice for Magnetic Particle Testing
Type 2 Withdrawn in 2002
Type 3 Weathering steel
F436MSpecification for Hardened Steel Washers (Metric)
1.4 This specification is applicable to metric heavy hex F568MSpecification for Carbon andAlloy Steel Externally
4
Threaded Metric Fasteners (Metric) (Withdrawn 2012)
structural bolts and alternate designs as established by the
F606MTest Methods for Determining the Mechanical Prop-
ResearchCouncilinitspublication,SpecificationforStructural
erties of Externally and Internally Threaded Fasteners,
Joints Using ASTM and bolts.
Washers, and Rivets (Metric)
1.5 For inch-pound bolts, see Specification A490.
F788/F788MSpecification for Surface Discontinuities of
1.6 The values stated in SI units are to be regarded as
Bolts, Screws, and Studs, Inch and Metric Series
standard. No other units of measurement are included in this
F959MSpecification for Compressible-Washer-Type Direct
standard.
Tension Indicators for Use With Structural Fasteners
1.7 The following safety hazards caveat pertains only to the (Metric)
Test Methods portion, Section 13, of this specification: This F1136MSpecification for Zinc/Aluminum Corrosion Pro-
4
standard does not purport to address all of the safety concerns, tectiveCoatingsforFasteners(Metric)(Withdrawn2011)
if any, associated with its use. It is the responsibility of the user F1470Practice for Fastener Sampling for Specified Me-
of this standard to establish appropriate safety and health chanical Properties and Performance Inspection
practices and determine the applicability of regulatory limita- F1789Terminology for F16 Mechanical Fasteners
tions prior to use. F2833Specification for Corrosion Protective Fastener Coat-
ings with Zinc Rich Base Coat and Aluminum Organic/
Inorganic Type
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,
3
Nuts, Rivets and Washers. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved April 1, 2012. Published April 2012. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1982. Last previous edition approved in 2011 as A490M–11. Standards volume information, refer to the standard’s Document Summary page on
DOI:10.1520/A0490M-12. the ASTM website.
2 4
Available from American Institute of Steel Construction (AISC), One E. The last approved version of this historical standard is referenced on
Wacker Dr., Suite 700, Chicago, IL 60601-2001, http://www.aisc.org. www.astm.org.
*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 − 12
6
TABLE 1 Chemical Requirements for Type 1 Bolts
2.4 IFI Standard :
Alloy Steel IFI 144Test Evaluation Procedures for Coating Qualifica-
Element He
...
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–11 Designation: A490M – 12
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)
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.
´1
Current edition approved Dec. 15, 2011. Published January 2012. Originally approved in 1982. Last previous edition approved in 2010 as A 490M–10 .
DOI:10.1520/A0490M-10E01.
Current edition approved April 1, 2012. Published April 2012. Originally approved in 1982. Last previous edition approved in 2011 as A 490M – 11. DOI:10.1520/
A0490M-12.
2
Available from American Institute of Steel Construction (AISC), One E. Wacker Dr., Suite 700, Chicago, IL 60601-2001, http://www.aisc.org.
3
For referencedASTM standards, visit theASTM webbiest,website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on the ASTM webbiest.website.
*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 – 12
TABLE 1 Chemical Requirements for Type 1 Bolts
Alloy Steel
Element Heat Product
Analysis, % 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
Manganese, min 0.60 0.57
Phosphorus, max 0.040 0.045
Sulfur, max 0.040 0.045
AA
Alloying Elements
Alloy Steel with Boron Addition
Element Heat Product
Analysis, % Analysis, %
Carbon
For sizes
...
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