ASTM A675/A675M-03

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Designation: A 675/A 675M – 03
Standard Specification for
Steel Bars, Carbon, Hot-Wrought, Special Quality,
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Mechanical Properties
This standard is issued under the fixed designationA 675/A 675M; 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 (e) 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* Hot-Wrought and Cold-Finished, General Requirements
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2 for
1.1 This specification covers hot-wrought special quality
A 370 Test Methods and Definitions for MechanicalTesting
carbon steel bars and bar size shapes produced to mechanical
of Steel Products
property requirements and intended for general constructional
A 663/A 663M Specification for Steel Bars, Carbon, Mer-
applications.
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chant Quality, Mechanical Properties
1.2 Thebarsareavailableinninestrengthgradesdesignated
E 290 TestMethodforSemi-GuidedBendTestforDuctility
45, 50, 55, 60, 65, 70, 75, 80, and 90 [310, 345, 380, 415, 450,
of Metallic Materials
485, 515, 550, and 620] corresponding to the minimum
ultimate tensile strength in ksi [MPa]. The chemical composi-
3. Terminology
tion is selected by the manufacturer to develop the required
3.1 Definitions of Terms Specific to This Standard:
mechanical properties.
3.1.1 special quality—Special quality bars are used when
1.3 Hot-wrought special quality carbon steel bars subject to
end use, method of fabrication, or subsequent processing
mechanical property requirements are hot wrought in straight
treatment requires quality characteristics not available in mer-
lengths only. Sections and sizes available are covered in
chant quality. Typical applications involve bending or machin-
Specification A 29/A 29M.
ing for general constructional uses. Some end uses or fabricat-
1.4 Some applications may require one or more of the
ingprocedurescannecessitateoneormorerequirementswhich
available designations shown under Supplementary Require-
are described in the Supplementary Requirements.
ments.
NOTE 1—Merchant-quality hot-wrought carbon steel bars subject to 4. Ordering Information
mechanical property requirements are covered in Specification A 663/
4.1 Orders for material under this specification should
A 663M.
include the following information:
1.5 The values stated in either inch-pound units or SI units
4.1.1 Quantity (weight or number of pieces),
are to be regarded separately as the standard. Within the text,
4.1.2 Name of material (hot-wrought special quality bars),
the SI units are shown in brackets. The values stated in each
4.1.3 Dimensions, including length,
system are not equivalents, therefore each system must be used
4.1.4 Cross section (round, square, hexagon, equal leg
independently of the other. Combining values from the two
angle, etc.),
systems may result in nonconformance with the specification.
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),
2. Referenced Documents
4.1.8 Copper bearing steel, if required (6.3),
2.1 ASTM Standards:
4.1.9 Test report, if required (Section 10),
A 29/A 29M SpecificationforSteelBars,CarbonandAlloy,
4.1.10 Supplementary Requirements or special require-
ments if required, and
4.1.11 Application and processing.
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This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel, and RelatedAlloys, and is the direct responsibility of Subcommittee NOTE 2—Atypical ordering description is as follows: 10 000 lb, [5000
A01.15 on Bars.
Current edition approved October 10, 2003. Published November 2003. Origi-
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nally approved in 1972. Last previous edition approved in 2000 as A 675/ For referenced ASTM standards, visit the ASTM website, www.astm.org, or
A 675M–90a (2000). contact ASTM Customer Service at service@astm.org. 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.
*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.
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A 675/A 675M – 03
TABLE 1 Tensile Requirements
B C
Grade Tensile Strength Yield Point, min Elongation, min, %
Designa-
ksi ksi 8 in. or [200 mm] 2 in. or [50 mm]
A
tion
Gage Length Gage Length
45 [310] 45 to 55 22.5 27 33
50 [345] 50 to 60 25 [170] 25 30
55 [380] 55 to 65 27.5 23 26
60 [415] 60 to 72 30 [205] 21 22
65 [450] 65 to 77 32.5 17 20
70 [485] 70
...