ASTM A576 Specification

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 A 400. The bars shall be furnished in the grades specified in Table 1. Sections and sizes of bar steel available are covered in Specification A 29/A 29M. 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.

Chemical Composition

UNS DesignationA Grade Heat Chemical Ranges and Limits, %
Carbon Manganese Phosphorus, max Sulfur, maxB
Nonresulfurized Carbon SteelsC,D,E,F,G Low Manganese 1.00 % max or less
G 10080 1008 0.10 max 0.30-0.50 0.040 0.050
G 10100 1010 0.08-0.13 0.30-0.60 0.040 0.050
G 10120 1012 0.10-0.15 0.30-0.60 0.040 0.050
G 10150 1015 0.13-0.18 0.30-0.60 0.040 0.050
G 10160 1016 0.13-0.18 0.60-0.90 0.040 0.050
G 10170 1017 0.15-0.20 0.30-0.60 0.040 0.050
G 10180 1018 0.15-0.20 0.60-0.90 0.040 0.050
G 10190 1019 0.15-0.20 0.70-1.00 0.040 0.050
G 10200 1020 0.18-0.23 0.30-0.60 0.040 0.050
G 10210 1021 0.18-0.23 0.60-0.90 0.040 0.050
G 10220 1022 0.18-0.23 0.70-1.00 0.040 0.050
G 10230 1023 0.20-0.25 0.30-0.60 0.040 0.050
G 10250 1025 0.22-0.28 0.30-0.60 0.040 0.050
G 10260 1026 0.22-0.28 0.60-0.90 0.040 0.050
G 10290 1029 0.25-0.31 0.60-0.90 0.040 0.050
G 10300 1030 0.28-0.34 0.60-0.90 0.040 0.050
G 10350 1035 0.32-0.38 0.60-0.90 0.040 0.050
G 10370 1037 0.32-0.38 0.70-1.00 0.040 0.050
G 10380 1038 0.35-0.42 0.60-0.90 0.040 0.050
G 10390 1039 0.37-0.44 0.70-1.00 0.040 0.050
G 10400 1040 0.37-0.44 0.60-0.90 0.040 0.050
G 10420 1042 0.40-0.47 0.60-0.90 0.040 0.050
G 10430 1043 0.40-0.47 0.70-1.00 0.040 0.050
G 10440 1044 0.43-0.50 0.30-0.60 0.040 0.050
G 10450 1045 0.43-0.50 0.60-0.90 0.040 0.050
G 10460 1046 0.43-0.50 0.70-1.00 0.040 0.050
G 10490 1049 0.46-0.53 0.60-0.90 0.040 0.050
G 10500 1050 0.48-0.55 0.60-0.90 0.040 0.050
G 10530 1053 0.48-0.55 0.70-1.00 0.040 0.050
G 10550 1055 0.50-0.60 0.60-0.90 0.040 0.050
G 10600 1060 0.55-0.65 0.60-0.90 0.040 0.050
G 10700 1070 0.65-0.75 0.60-0.90 0.040 0.050
G 10780 1078 0.72-0.85 0.30-0.60 0.040 0.050
G 10800 1080 0.75-0.88 0.60-0.90 0.040 0.050
G 10840 1084 0.80-0.93 0.60-0.90 0.040 0.050
G 10900 1090 0.85-0.98 0.60-0.90 0.040 0.050
G 10950 1095 0.90-1.03 0.30-0.50 0.040 0.050
G 15130 1513 0.10-0.16 1.10-1.40 0.040 0.050
G 15180 1518 0.15-0.21 1.10-1.40 0.040 0.050
G 15220 1522 0.18-0.24 1.10-1.40 0.040 0.050
G 15240 1524 0.19-0.25 1.35-1.65 0.040 0.050
G 15250 1525 0.23-0.29 0.80-1.10 0.040 0.050
G 15260 1526 0.22-0.29 1.10-1.40 0.040 0.050
G 15270 1527 0.22-0.29 1.20-1.50 0.040 0.050
G 15360 1536 0.30-0.37 1.20-1.50 0.040 0.050
G 15410 1541 0.36-0.44 1.35-1.65 0.040 0.050
G 15470 1547 0.43-0.51 1.35-1.65 0.040 0.050
G 15480 1548 0.44-0.52 1.10-1.40 0.040 0.050
G 15510 1551 0.45-0.56 0.85-1.15 0.040 0.050
G 15520 1552 0.47-0.55 1.20-1.50 0.040 0.050
G 15610 1561 0.55-0.65 0.75-1.05 0.040 0.050
G 15660 1566 0.60-0.71 0.85-1.15 0.040 0.050
G 15720 1572 0.65-0.76 1.00-1.30 0.040 0.050
Resulfurized Carbon SteelsC,E,G
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
Rephosphorized and Resulfurized Carbon SteelE,G,H
Designation Grade Carbon Manganese Phosphorus Sulfur Lead
G 12110 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
Note:

A. New designations established in accordance with Practice E 527 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, 0.10 to 0.20 %, 0.15 to 0.35 %, or 0.20 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 0.15 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 0.0005 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