ASTM A490M-14
(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 A325 and A490 bolts, approved by the Research Council on Structural Connections; endorsed by the American Institute of Steel Construction and by the Industrial Fastener Institute.2
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Withdrawn in 2002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 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.
(A) Steel, as defined by the American Iron and Steel Institute, shall be considered to be alloy when the maximum of the range given for the content of alloying elements exceeds one or more of the following limits: Manganese, 1.65 %; silicon, 0.60 %; copper, 0.60 % or in which a definite range or a definite minimum quantity of any of the following elements is specified or required within the limits of the recognized field of constructional alloy steels: aluminum, chromium up to 3.99 %, cobalt, columbium, molybdenum, nickel, titanium, tungsten, vanadium, zirconium, or any other alloying elements added to obtain a desired alloying effect.
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Designation: A490M −14
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.
This standard has been approved for use by agencies of the U.S. 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
A325Specification for Structural Bolts, Steel, Heat Treated,
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- A490Specification 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
A490MSpecification for High-Strength Steel Bolts, 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
A563MSpecificationforCarbonandAlloySteelNuts(Met-
2
Construction and by the Industrial Fastener Institute.
ric)
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
Type 1 Medium carbon alloy steel
E709Guide for Magnetic Particle Testing
Type 2 Withdrawn in 2002
E1444Practice for Magnetic Particle Testing
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
structural bolts and alternate designs as established by the
4
Threaded Metric Fasteners (Metric) (Withdrawn 2012)
ResearchCouncilinitspublication,SpecificationforStructural
F606MTest Methods for Determining the Mechanical Prop-
Joints Using ASTM and bolts.
erties of Externally and Internally Threaded 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/F788MSpecification for Surface Discontinuities of
standard. No other units of measurement are included in this
Bolts, Screws, and Studs, Inch and Metric Series
standard.
F959MSpecification for Compressible-Washer-Type Direct
1.7 The following safety hazards caveat pertains only to the Tension Indicators for Use With Structural Fasteners
Test Methods portion, Section 13, of this specification: This
(Metric)
standard does not purport to address all of the safety concerns,
F1136MSpecification for Zinc/Aluminum Corrosion Pro-
4
if any, associated with its use. It is the responsibility of the user
tectiveCoatingsforFasteners(Metric)(Withdrawn2011)
of this standard to establish appropriate safety and health
F1470Practice for Fastener Sampling for Specified Me-
practices and determine the applicability of regulatory limita-
chanical Properties and Performance Inspection
tions prior to use.
F1789Terminology for F16 Mechanical Fasteners
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 Aug. 1, 2014. Published December 2014. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1982. Last previous edition approved in 2012 as A490M–12. Standards volume information, refer to the standard’s Document Summary page on
DOI:10.1520/A0490M-14. the ASTM website.
4
2
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 − 14
5
TABLE 1 Chemical Requirements for Type 1 Bolts
2.3 ISO Standards:
Alloy Steel 7412Hexagon Bolts for High Strength Structural
Element Heat Product Bolting With Large Width Across Fl
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM 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 − 12 A490M − 14
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 U.S. 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 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.
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)
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 April 1, 2012Aug. 1, 2014. Published April 2012December 2014. Originally approved in 1982. Last previous edition approved in 20112012 as
A 490M – 11. DOI:10.1520/A0490M-12.A 490M – 12. DOI:10.1520/A0490M-14.
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 referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM 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 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 − 14
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
A A
Alloying Elements
Alloy Steel with Boron Addition
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 0.35-0.55
Manganese, min 0.60 0.57
Phosphorus, max 0.040 0.045
Sulfur, max 0.040 0.045
Boron 0.0005-0.003 0.0005-0.003
A A
Alloying Elements
A
Steel, as defined by the American Ir
...
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