ASTM A675/A675M-03e1

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 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 A 29/A 29M.
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 A 663/A 663M.
1.5 The values stated in either inch-pound units or SI units are to be regarded separately as the standard. Within the text, the SI units are shown in brackets. The values stated in each system are not equivalents, therefore each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.

General Information

• Status: Historical
• Publication Date: 09-Oct-2003
• ICS: 77.140.60 - Steel bars and rods
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.15 - Bars

Relations

• Replaces: ASTM A675/A675M-03 - Standard Specification for Steel Bars, Carbon, Hot-Wrought, Special Quality, Mechanical Properties
• Effective Date: 10-Oct-2003
• Replaced By: ASTM A675/A675M-03(2009) - Standard Specification for Steel Bars, Carbon, Hot-Wrought, Special Quality, Mechanical Properties
• Effective Date: 01-Apr-2009
• Referred By: ASTM C361-22 - Standard Specification for Reinforced Concrete Low-Head Pressure Pipe
• Effective Date: 10-Oct-2003
• Referred By: ASTM A105/A105M-23 - Standard Specification for Carbon Steel Forgings for Piping Applications
• Effective Date: 10-Oct-2003
• Referred By: ASTM A400-17 - Standard Practice for Steel Bars, Selection Guide, Composition, and Mechanical Properties
• Effective Date: 10-Oct-2003
• Referred By: ASTM A663/A663M-17 - Standard Specification for Steel Bars, Carbon, Merchant Quality, Mechanical Properties
• Effective Date: 10-Oct-2003
• Referred By: ASTM A29/A29M-23 - Standard Specification for General Requirements for Steel Bars, Carbon and Alloy, Hot-Wrought
• Effective Date: 10-Oct-2003
• Referred By: ASTM C361M-22 - Standard Specification for Reinforced Concrete Low-Head Pressure Pipe (Metric)
• Effective Date: 10-Oct-2003

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
e1
Designation: A 675/A 675M – 03
Standard Specification for
Steel Bars, Carbon, Hot-Wrought, Special Quality,
1
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
e NOTE—Editorial changes were made to S7.1 in June 2005.
1. Scope* 2. Referenced Documents
2 3
1.1 This specification covers hot-wrought special quality 2.1 ASTM Standards:
carbon steel bars and bar size shapes produced to mechanical A 29/A 29M SpecificationforSteelBars,CarbonandAlloy,
property requirements and intended for general constructional Hot-Wrought and Cold-Finished, General Requirements
applications. for
1.2 Thebarsareavailableinninestrengthgradesdesignated A 370 Test Methods and Definitions for MechanicalTesting
45, 50, 55, 60, 65, 70, 75, 80, and 90 [310, 345, 380, 415, 450, of Steel Products
485, 515, 550, and 620] corresponding to the minimum A 663/A 663M Specification for Steel Bars, Carbon, Mer-
ultimate tensile strength in ksi [MPa]. The chemical composi- chant Quality, Mechanical Properties
tion is selected by the manufacturer to develop the required E 290 TestMethodforSemi-GuidedBendTestforDuctility
mechanical properties. of Metallic Materials
1.3 Hot-wrought special quality carbon steel bars subject to
3. Terminology
mechanical property requirements are hot wrought in straight
lengths only. Sections and sizes available are covered in 3.1 Definitions of Terms Specific to This Standard:
3.1.1 special quality—Special quality bars are used when
Specification A 29/A 29M.
1.4 Some applications may require one or more of the end use, method of fabrication, or subsequent processing
available designations shown under Supplementary Require- treatment requires quality characteristics not available in mer-
chant quality. Typical applications involve bending or machin-
ments.
ing for general constructional uses. Some end uses or fabricat-
NOTE 1—Merchant-quality hot-wrought carbon steel bars subject to
ingprocedurescannecessitateoneormorerequirementswhich
mechanical property requirements are covered in Specification A 663/
are described in the Supplementary Requirements.
A 663M.
1.5 The values stated in either inch-pound units or SI units
4. Ordering Information
are to be regarded separately as the standard. Within the text,
4.1 Orders for material under this specification should
the SI units are shown in brackets. The values stated in each
include the following information:
system are not equivalents, therefore each system must be used
4.1.1 Quantity (weight or number of pieces),
independently of the other. Combining values from the two
4.1.2 Name of material (hot-wrought special quality bars),
systems may result in nonconformance with the specification.
4.1.3 Dimensions, including length,
4.1.4 Cross section (round, square, hexagon, equal leg
angle, etc.),
1 4.1.5 Specification designation and date of issue,
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel, and RelatedAlloys, and is the direct responsibility of Subcommittee 4.1.6 Grade designation (Table 1),
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 [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.
*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 [MPa] ksi [MPa] 8 in. or [200 mm] 2 in. or [50 mm]
A
tion
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 [3
...