ASTM A576-23

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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: A576 − 17 A576 − 23
Standard Specification for
Steel Bars, Carbon, Hot-Wrought, Special Quality
This standard is issued under the fixed designation A576; 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 hot-wrought special quality carbon steel bars. Special quality bar applications include forging, heat
treating, cold drawing, machining, and many structural uses. A guide for the selection of steel bars is contained in Practice A400.
1.2 The bars shall be furnished in the grades specified in Table 1. Sections and sizes of bar steel available are covered in
Specification A29/A29M. Hot-wrought special quality carbon steel bars are produced in cut lengths and coils; the manufacturer
should be consulted regarding sections and sizes available in coils, produced to a chemical composition.
1.3 Merchant quality hot-wrought carbon steel bars are covered in Specification A575.
1.4 Some end uses may require superior surface quality, or special chemical restrictions, metallurgical characteristics, heat
treatment, or surface finishes which the purchaser may obtain by designating one or more of the available Supplementary
Requirements.
1.5 The values stated in inch-pound units are to be regarded as standard.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
A29/A29M Specification for General Requirements for Steel Bars, Carbon and Alloy, Hot-Wrought
A400 Practice for Steel Bars, Selection Guide, Composition, and Mechanical Properties
A575 Specification for Steel Bars, Carbon, Merchant Quality, M-Grades
A941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys
E45 Test Methods for Determining the Inclusion Content of Steel
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
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 Nov. 1, 2017Nov. 1, 2023. Published December 2017November 2023. Originally approved in 1967. Last previous edition approved in 20122017
as A576 – 90b (2012).A576 – 17. DOI: 10.1520/A0576-17.10.1520/A0576-23.
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
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A576 − 23
TABLE 1 Grade Designations and Chemical Requirements of Hot-Wrought Carbon Steel Bars
NOTE 1—Grade designations and compositions correspond to the respective SAE designations and compositions.
Heat Chemical Ranges and Limits, %
A
UNS Designation Grade
B
Carbon Manganese Phosphorus, max Sulfur, max
C, D, E, F, G
Nonresulfurized Carbon Steels
Low Manganese 1.00 % max or less
G10080 1008 0.10 max 0.30–0.50 0.040 0.050
G10100 1010 0.08–0.13 0.30–0.60 0.040 0.050
G10120 1012 0.10–0.15 0.30–0.60 0.040 0.050
G10150 1015 0.13–0.18 0.30–0.60 0.040 0.050
G10160 1016 0.13–0.18 0.60–0.90 0.040 0.050
G10170 1017 0.15–0.20 0.30–0.60 0.040 0.050
G10180 1018 0.15–0.20 0.60–0.90 0.040 0.050
G10190 1019 0.15–0.20 0.70–1.00 0.040 0.050
G10200 1020 0.18–0.23 0.30–0.60 0.040 0.050
G10210 1021 0.18–0.23 0.60–0.90 0.040 0.050
G10220 1022 0.18–0.23 0.70–1.00 0.040 0.050
G10230 1023 0.20–0.25 0.30–0.60 0.040 0.050
G10250 1025 0.22–0.28 0.30–0.60 0.040 0.050
G10260 1026 0.22–0.28 0.60–0.90 0.040 0.050
G10290 1029 0.25–0.31 0.60–0.90 0.040 0.050
G10300 1030 0.28–0.34 0.60–0.90 0.040 0.050
G10350 1035 0.32–0.38 0.60–0.90 0.040 0.050
G10370 1037 0.32–0.38 0.70–1.00 0.040 0.050
G10380 1038 0.35–0.42 0.60–0.90 0.040 0.050
G10390 1039 0.37–0.44 0.70–1.00 0.040 0.050
G10400 1040 0.37–0.44 0.60–0.90 0.040 0.050
G10420 1042 0.40–0.47 0.60–0.90 0.040 0.050
G10430 1043 0.40–0.47 0.70–1.00 0.040 0.050
G10440 1044 0.43–0.50 0.30–0.60 0.040 0.050
G10450 1045 0.43–0.50 0.60–0.90 0.040 0.050
G10460 1046 0.43–0.50 0.70–1.00 0.040 0.050
G10490 1049 0.46–0.53 0.60–0.90 0.040 0.050
G10500 1050 0.48–0.55 0.60–0.90 0.040 0.050
G10530 1053 0.48–0.55 0.70–1.00 0.040 0.050
G10550 1055 0.50–0.60 0.60–0.90 0.040 0.050
G10600 1060 0.55–0.65 0.60–0.90 0.040 0.050
G10700 1070 0.65–0.75 0.60–0.90 0.040 0.050
G10780 1078 0.72–0.85 0.30–0.60 0.040 0.050
G10800 1080 0.75–0.88 0.60–0.90 0.040 0.050
G10840 1084 0.80–0.93 0.60–0.90 0.040 0.050
G10900 1090 0.85–0.98 0.60–0.90 0.040 0.050
G10950 1095 0.90–1.03 0.30–0.50 0.040 0.050
High Manganese 1.65 % max or less
G15130 1513 0.10–0.16 1.10–1.40 0.040 0.050
G15180 1518 0.15–0.21 1.10–1.40 0.040 0.050
G15220 1522 0.18–0.24 1.10–1.40 0.040 0.050
G15240 1524 0.19–0.25 1.35–1.65 0.040 0.050
G15250 1525 0.23–0.29 0.80–1.10 0.040 0.050
G15260 1526 0.22–0.29 1.10–1.40 0.040 0.050
G15270 1527 0.22–0.29 1.20–1.50 0.040 0.050
G15360 1536 0.30–0.37 1.20–1.50 0.040 0.050
G15410 1541 0.36–0.44 1.35–1.65 0.040 0.050
G15470 1547 0.43–0.51 1.35–1.65 0.040 0.050
G15480 1548 0.44–0.52 1.10–1.40 0.040 0.050
G15510 1551 0.45–0.56 0.85–1.15 0.040 0.050
G15520 1552 0.47–0.55 1.20–1.50 0.040 0.050
G15610 1561 0.55–0.65 0.75–1.05 0.040 0.050
G15660 1566 0.60–0.71 0.85–1.15 0.040 0.050
G15720 1572 0.65–0.76 1.00–1.30 0.040 0.050
C, E, G
Resulfurized Carbon Steels
G11090 1109 0.08–0.13 0.60–0.90 0.040 0.08–0.13
G11100 1110 0.08–0.13 0.30–0.60 0.040 0.08–0.13
G11160 1116 0.14–0.20 1.10–1.40 0.040 0.16–0.23
G11170 1117 0.14–0.20 1.00–1.30 0.040 0.08–0.13
G11180 1118 0.14–0.20 1.30–1.60 0.040 0.08–0.13
G11190 1119 0.14–0.20 1.00–1.30 0.040 0.24–0.33
G11320 1132 0.27–0.34 1.35–1.65 0.040 0.08–0.13
G11370 1137 0.32–0.39 1.35–1.65 0.040 0.08–0.13
G11390 1139 0.35–0.43 1.35–1.65 0.040 0.13–0.20
G11400 1140 0.37–0.44 0.70–1.00 0.040 0.08–0.13
G11410 1141 0.37–0.45 1.35–1.65 0.040 0.08–0.13
G11440 1144 0.40–0.48 1.35–1.65 0.040 0.24–0.33
G11450 1145 0.42–0.49 0.70–1.00 0.040 0.04–0.07
G11460 1146 0.42–0.49 0.70–1.00 0.040 0.08–0.13
G11510 1151 0.48–0.55 0.70–1.00 0.040 0.08–0.13
A576 − 23
TABLE 1 Continued
E, G, H
Rephosphorized and Resulfurized Carbon Steel
Designation Grade Carbon Manganese Phosphorus Sulfur Lead
G12110 1211 0.13 max 0.60–0.90 0.07–0.12 0.10–0.15 .
G12120 1212 0.13 max 0.70–1.00 0.07–0.12 0.16–0.23 .
G12130 1213 0.13 max 0.70–1.00 0.07–0.12 0.24–0.33 .
G12150 1215 0.09 max 0.75–1.05 0.04–0.09 0.26–0.35 .
... 12L14 0.15 max 0.85–1.15 0.04–0.09 0.26–0.35 0.15–0.35
A
New designations established in accordance with Practice E527 and SAE J 1086.
B
Maximum unless otherwise indicated.
C
When silicon is required, the following ranges and limits are commonly specified: 0.10 %, max, 0.100.10 % to 0.20 %, 0.150.15 % to 0.35 %, or 0.200.20 % to 0.40 %.
D
Copper can be specified when required as 0.20 % minimum.
E
When lead is required as an added element to a standard steel, a range of 0.150.15 % to 0.35 % incl is specified. Such a steel is identified by inserting the letter “L”
between the second and third numerals of the grade designation, for example, 10 L 45. A cast or heat analysis is not determinable when lead is added to the ladle stream.
F
When boron treatment is specified for killed steels, the steels can be expected to contain 0.00050.0005 % to 0.003 % boron.
G
The elements bismuth, calcium, selenium, or tellurium may be added as agreed between purchaser and supplier.
H
It is not common practice to produce these steels to specified limits for silicon because of its adverse effect on machinability.
2.2 SAE Standard:
SAE J 1086 Recommended Practice for Numbering Metals and Alloys (UNS)
3. Terminology
3.1 Definitions:
3.1.1 For definitions of terms used in this standard, refer to Terminology A941.
4. Ordering Information
4.1 Orders under this specification should include the following, as required, to describe adequately the desired material:
4.1.1 Quantity (weight or number of bars),
4.1.2 Name of material (hot-wrought carbon steel bars),
4.1.3 Dimensions,
4.1.4 ASTM specification number and date of issue,
4.1.5 Deoxidation practice (see 4.2.15.2.1),
4.1.6 Grade designation or chemical composition limits (see 5.16.1 and Table 1),
4.1.7 Coarse or fine grain steel (4.2.25.2.2),
4.1.8 Test reports, if required (Section 78),
4.1.9 Additions to the specification and Supplementary Requirements, if required, and
4.1.10 End use.
Available from SAE International (SAE), 400 Commonwealth Dr., Warrendale, PA 15096, http://www.sae.org.
A576 − 23
NOTE 1—A typical ordering description is as follows: 10 000 lb, carbon steel bars, hot rolled hot-rolled 1000 in. diameter by 10 ft, ASTM A576 dated
___, killed steel, Grade 1018, test reports required, coarse grain Supplementary Requirement S10, welded industrial fan hubs and shafts.
5. Materials and Manufacture
5.1 Melting Practice—The steel shall be made by any commercially viable primary steelmaking process. The primary melting may
incorporate separate degassing or refining and may be followed by secondary melting using electroslag remelting or vacuum arc
remelting. Where secondary melting is employed, the heat shall be defined as all of the ingots remelted from a single primary heat.
5.2 Deoxidation:
5.2.1 Unless otherwise specified, the steel shall be semi-killed or killed at the manufacturer’s option.
5.2.2 If killed steel is specified, the purchaser may designate that the steel be made to coarse or fine austenitic grain size (see S10
or S11).
NOTE 2—Assured coarse grain
...