ASTM A675/A675M-14

Standard Specification for Steel Bars, Carbon, Hot-Wrought, Special Quality, Mechanical Properties

ABSTRACT
This guide covers standard specification for hot-wrought special quality carbon steel bars and bar size shapes produced to mechanical property requirements and intended for general constructional applications. Heat analysis shall be performed wherein the material shall conform to the required chemical composition for phosphorus, sulfur, copper, and lead. The steel shall meet the required tensile properties such as tensile strength, yield strength, and elongation. The test specimen shall undergo mechanical tests such as tension test and bend test.
SCOPE
1.1 This specification2 covers hot-wrought special quality carbon steel bars and bar size shapes produced to mechanical property requirements and intended for general constructional applications.  
1.2 The bars are available in nine strength grades designated 45, 50, 55, 60, 65, 70, 75, 80, and 90 [310, 345, 380, 415, 450, 485, 515, 550, and 620] corresponding to the minimum ultimate tensile strength in ksi [MPa]. The chemical composition is selected by the manufacturer to develop the required mechanical properties.  
1.3 Hot-wrought special quality carbon steel bars subject to mechanical property requirements are hot wrought in straight lengths only. Sections and sizes available are covered in Specification A29/A29M.  
1.4 Some applications may require one or more of the available designations shown under Supplementary Requirements. Note 1—Merchant-quality hot-wrought carbon steel bars subject to mechanical property requirements are covered in Specification A663/A663M.  
1.5 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

General Information

• Status: Historical
• Publication Date: 30-Apr-2014
• ICS: 77.140.60 - Steel bars and rods
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.15 - Bars

Relations

• Replaced By: ASTM A675/A675M-14(2019) - Standard Specification for Steel Bars, Carbon, Hot-Wrought, Special Quality, Mechanical Properties
• Effective Date: 01-Sep-2019

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:A675/A675M −14
Standard Specification for
Steel Bars, Carbon, Hot-Wrought, Special Quality,
1
Mechanical Properties
This standard is issued under the fixed designationA675/A675M; 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
2 3
1.1 This specification covers hot-wrought special quality 2.1 ASTM Standards:
A29/A29MSpecificationforGeneralRequirementsforSteel
carbon steel bars and bar size shapes produced to mechanical
property requirements and intended for general constructional Bars, Carbon and Alloy, Hot-Wrought
A370Test Methods and Definitions for Mechanical Testing
applications.
of Steel Products
1.2 Thebarsareavailableinninestrengthgradesdesignated
A663/A663MSpecification for Steel Bars, Carbon, Mer-
45, 50, 55, 60, 65, 70, 75, 80, and 90 [310, 345, 380, 415, 450,
chant Quality, Mechanical Properties
485, 515, 550, and 620] corresponding to the minimum
E290Test Methods for Bend Testing of Material for Ductil-
ultimate tensile strength in ksi [MPa]. The chemical composi-
ity
tion is selected by the manufacturer to develop the required
mechanical properties.
3. Terminology
1.3 Hot-wrought special quality carbon steel bars subject to
3.1 Definitions of Terms Specific to This Standard:
mechanical property requirements are hot wrought in straight
3.1.1 special quality—Special quality bars are used when
lengths only. Sections and sizes available are covered in
end use, method of fabrication, or subsequent processing
Specification A29/A29M.
treatment requires quality characteristics not available in mer-
chant quality. Typical applications involve bending or machin-
1.4 Some applications may require one or more of the
ing for general constructional uses. Some end uses or fabricat-
available designations shown under Supplementary Require-
ingprocedurescannecessitateoneormorerequirementswhich
ments.
are described in the Supplementary Requirements.
NOTE 1—Merchant-quality hot-wrought carbon steel bars subject to
mechanical property requirements are covered in Specification A663/ 4. Ordering Information
A663M.
4.1 Orders for material under this specification should
1.5 The values stated in either SI units or inch-pound units
include the following information:
are to be regarded separately as standard. The values stated in
4.1.1 Quantity (weight or number of pieces),
each system may not be exact equivalents; therefore, each
4.1.2 Name of material (hot-wrought special quality bars),
system shall be used independently of the other. Combining
4.1.3 Dimensions, including length,
values from the two systems may result in non-conformance
4.1.4 Cross section (round, square, hexagon, equal leg
with the standard.
angle, etc.),
4.1.5 Specification designation and date of issue,
4.1.6 Grade designation (Table 1),
1
This specification is under the jurisdiction ofASTM Committee A01 on Steel,
4.1.7 Leaded steel, if required (6.2),
Stainless Steel and RelatedAlloys and is the direct responsibility of Subcommittee
4.1.8 Copper bearing steel, if required (6.3),
A01.15 on Bars.
Current edition approved May 1, 2014. Published June 2014. Originally
3
approved in 1972. Last previous edition approved in 2009 as A675/ For referenced ASTM standards, visit the ASTM website, www.astm.org, or
A675M–03(2009). DOI: 10.1520/A0675_A0675M-14. contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
2
For ASME Boiler and Pressure Vessel Code applications see related Specifi- Standards volume information, refer to the standard’s Document Summary page on
cation SA 675 in Section II of that Code. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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A675/A675M−14
TABLE 1 Tensile Requirements
B C
Tensile Strength Yield Point, min Elongation, min, %
Grade
A ksi [MPa] ksi [MPa] 8 in. or [200 mm] 2 in. or [50 mm]
Designation
Gage Length Gage Length
45 [310] 45 to 55 [310 to 380] 22.5 [155] 27 33
50 [345] 50 to 60 [345 to 415] 25 [170] 25 30
55 [380] 55 to 65 [380 to 450] 27.5 [190] 23 26
60 [415] 60 to 72 [415 to 495] 30 [205] 21 22
65 [450] 65 to 77 [450 to 530] 32.5 [225] 17 20
70 [485] 70 to 85 [485 to 585] 35 [240] 14 18
75 [515] 75 to 90 [515 to 620] 37.5 [260] 14 18
80 [550] 80 min [550 min] 40 [275] 13 17
90 [620] 90 min [620 min] 55 [380] 10 14
A
When lead is required, add the letter “L” after the grade designation, for example, 45L.
B
When the tension test does not
...

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: A675/A675M − 03 (Reapproved 2009) A675/A675M − 14
Standard Specification for
Steel Bars, Carbon, Hot-Wrought, Special Quality,
1
Mechanical Properties
This standard is issued under the fixed designation A675/A675M; 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
2
1.1 This specification covers hot-wrought special quality carbon steel bars and bar size shapes produced to mechanical property
requirements and intended for general constructional applications.
1.2 The bars are available in nine strength grades designated 45, 50, 55, 60, 65, 70, 75, 80, and 90 [310, 345, 380, 415, 450,
485, 515, 550, and 620] corresponding to the minimum ultimate tensile strength in ksi [MPa]. The chemical composition is selected
by the manufacturer to develop the required mechanical properties.
1.3 Hot-wrought special quality carbon steel bars subject to mechanical property requirements are hot wrought in straight
lengths only. Sections and sizes available are covered in Specification A29/A29M.
1.4 Some applications may require one or more of the available designations shown under Supplementary Requirements.
NOTE 1—Merchant-quality hot-wrought carbon steel bars subject to mechanical property requirements are covered in Specification A663/A663M.
1.5 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each
system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the
two systems may result in non-conformance with the standard.
2. Referenced Documents
3
2.1 ASTM Standards:
A29/A29M Specification for General Requirements for Steel Bars, Carbon and Alloy, Hot-Wrought
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A663/A663M Specification for Steel Bars, Carbon, Merchant Quality, Mechanical Properties
E290 Test Methods for Bend Testing of Material for Ductility
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 special quality—Special quality bars are used when end use, method of fabrication, or subsequent processing treatment
requires quality characteristics not available in merchant quality. Typical applications involve bending or machining for general
constructional uses. Some end uses or fabricating procedures can necessitate one or more requirements which are described in the
Supplementary Requirements.
4. Ordering Information
4.1 Orders for material under this specification should include the following information:
4.1.1 Quantity (weight or number of pieces),
4.1.2 Name of material (hot-wrought special quality bars),
4.1.3 Dimensions, including length,
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.15
on Bars.
Current edition approved April 1, 2009May 1, 2014. Published April 2009June 2014. Originally approved in 1972. Last previous edition approved in 20032009 as
ε1
A675/A675M – 03 .(2009). DOI: 10.1520/A0675_A0675M-03R09.10.1520/A0675_A0675M-14.
2
For ASME Boiler and Pressure Vessel Code applications see related Specification SA 675 in Section II of that Code.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
A675/A675M − 14
4.1.4 Cross section (round, square, hexagon, equal leg angle, etc.),
4.1.5 Specification designation and date of issue,
4.1.6 Grade designation (Table 1),
4.1.7 Leaded steel, if required (6.2),
4.1.8 Copper bearing steel, if required (6.3),
4.1.9 Test report, if required (Section 10),
4.1.10 Supplementary Requirements or special requirements if required, and
4.1.11 Application and processing.
NOTE 2—A typical ordering description is as follows: 10 000 lb, [5000 kg] Hot Wrought Special Quality Carbon Steel Bars, 1 in. diameter × 10 ×10
ft, [25m × 3m] Round, ASTM A675
...