FOR REQUIREMENT OF THIS GRADE OR FOR DETAIL CONTACT US AT :-
LADHANI METAL CORPORATION, MUMBAI, INDIA
Introduction
ASTM A 29/A 29M-03 is a widely recognized American standard specification that covers general requirements for hot-wrought carbon and alloy steel bars. This standard establishes uniform technical delivery conditions for bars used in mechanical and structural applications. It serves as a foundational specification that applies to a broad range of carbon and alloy steel grades supplied in bar form for further processing, machining, forging, or heat treatment.
ASTM A 29/A 29M-03 ensures consistency in quality, mechanical performance, dimensional accuracy, and inspection requirements across various steel grades used in automotive, engineering, oil & gas, and industrial sectors.
Ladhani Metal Corporation is a trusted supplier, and exporter of ASTM A 29/A 29M-03 steel bars, supplied with mill test certificates and strict quality inspection in compliance with international standards.
Scope of ASTM A 29/A 29M-03
This specification covers hot-wrought carbon and alloy steel bars in straight lengths or coils. It applies to:
Round bars
Square bars
Hexagonal bars
Flat bars
Special-shaped bars
The standard provides general requirements that are applicable unless otherwise specified in the individual material specification. It functions in combination with specific ASTM grade standards such as:
ASTM A108
ASTM A322
ASTM A304
ASTM A 29/A 29M-03 is often referenced alongside grade-specific ASTM standards to define full technical requirements.
Material Condition and Heat Treatment
Bars supplied under ASTM A 29/A 29M-03 may be delivered in various conditions, including:
As-rolled
Annealed
Normalized
Quenched and tempered
Spheroidize annealed
Cold finished (if specified under supplementary standards)
The heat treatment condition is agreed upon between manufacturer and purchaser depending on the intended application.
🔹
Standard Carbon
|
Grade |
Carbon (%) |
Manganese (%) |
Phosphorus (Max %) |
Sulfur (Max %) |
|
1005 |
0.06 max |
0.35 max |
0.040 |
0.050 |
|
1006 |
0.08 max |
0.25–0.40 |
0.040 |
0.050 |
|
1008 |
0.10 max |
0.30–0.50 |
0.040 |
0.050 |
|
1010 |
0.08–0.13 |
0.30–0.60 |
0.040 |
0.050 |
|
1011 |
0.08–0.13 |
0.60–0.90 |
0.040 |
0.050 |
|
1012 |
0.10–0.15 |
0.30–0.60 |
0.040 |
0.050 |
|
1013 |
0.11–0.16 |
0.50–0.80 |
0.040 |
0.050 |
|
1015 |
0.13–0.18 |
0.30–0.60 |
0.040 |
0.050 |
|
1016 |
0.13–0.18 |
0.60–0.90 |
0.040 |
0.050 |
|
1017 |
0.15–0.20 |
0.30–0.60 |
0.040 |
0.050 |
|
1018 |
0.15–0.20 |
0.60–0.90 |
0.040 |
0.050 |
|
1019 |
0.15–0.20 |
0.70–1.00 |
0.040 |
0.050 |
|
1020 |
0.18–0.23 |
0.30–0.60 |
0.040 |
0.050 |
|
1021 |
0.18–0.23 |
0.60–0.90 |
0.040 |
0.050 |
|
1022 |
0.18–0.23 |
0.70–1.00 |
0.040 |
0.050 |
|
1023 |
0.20–0.25 |
0.30–0.60 |
0.040 |
0.050 |
|
1025 |
0.22–0.28 |
0.30–0.60 |
0.040 |
0.050 |
|
1026 |
0.22–0.28 |
0.60–0.90 |
0.040 |
0.050 |
|
1029 |
0.25–0.31 |
0.60–0.90 |
0.040 |
0.050 |
|
1030 |
0.28–0.34 |
0.60–0.90 |
0.040 |
0.050 |
|
1034 |
0.32–0.38 |
0.50–0.80 |
0.040 |
0.050 |
|
1035 |
0.32–0.38 |
0.60–0.90 |
0.040 |
0.050 |
|
1037 |
0.32–0.38 |
0.70–1.00 |
0.040 |
0.050 |
|
1038 |
0.35–0.42 |
0.60–0.90 |
0.040 |
0.050 |
|
1039 |
0.37–0.44 |
0.70–1.00 |
0.040 |
0.050 |
|
1040 |
0.37–0.44 |
0.60–0.90 |
0.040 |
0.050 |
|
1042 |
0.40–0.47 |
0.60–0.90 |
0.040 |
0.050 |
|
1043 |
0.40–0.47 |
0.70–1.00 |
0.040 |
0.050 |
|
1044 |
0.43–0.50 |
0.30–0.60 |
0.040 |
0.050 |
|
1045 |
0.43–0.50 |
0.60–0.90 |
0.040 |
0.050 |
|
1046 |
0.43–0.50 |
0.70–1.00 |
0.040 |
0.050 |
|
1049 |
0.46–0.53 |
0.60–0.90 |
0.040 |
0.050 |
|
1050 |
0.48–0.55 |
0.60–0.90 |
0.040 |
0.050 |
|
1053 |
0.48–0.55 |
0.70–1.00 |
0.040 |
0.050 |
|
1055 |
0.50–0.60 |
0.60–0.90 |
0.040 |
0.050 |
|
1059 |
0.55–0.65 |
0.50–0.80 |
0.040 |
0.050 |
|
1060 |
0.55–0.65 |
0.60–0.90 |
0.040 |
0.050 |
|
1064 |
0.60–0.70 |
0.50–0.80 |
0.040 |
0.050 |
|
1065 |
0.60–0.70 |
0.60–0.90 |
0.040 |
0.050 |
|
1069 |
0.65–0.75 |
0.40–0.70 |
0.040 |
0.050 |
|
1070 |
0.65–0.75 |
0.60–0.90 |
0.040 |
0.050 |
|
1071 |
0.65–0.70 |
0.75–1.05 |
0.040 |
0.050 |
|
1074 |
0.70–0.80 |
0.50–0.80 |
0.040 |
0.050 |
|
1075 |
0.70–0.80 |
0.40–0.70 |
0.040 |
0.050 |
|
1078 |
0.72–0.85 |
0.30–0.60 |
0.040 |
0.050 |
|
1080 |
0.75–0.88 |
0.60–0.90 |
0.040 |
0.050 |
|
1084 |
0.80–0.93 |
0.60–0.90 |
0.040 |
0.050 |
|
1086 |
0.80–0.93 |
0.30–0.50 |
0.040 |
0.050 |
|
1090 |
0.85–0.98 |
0.60–0.90 |
0.040 |
0.050 |
|
1095 |
0.90–1.03 |
0.30–0.50 |
0.040 |
0.050 |
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Resulfurized Carbon Steels
|
Grade |
Carbon (%) |
Manganese (%) |
Phosphorus (Max %) |
Sulfur (%) |
|
1108 |
0.08–0.13 |
0.60–0.80 |
0.040 |
0.08–0.13 |
|
1109 |
0.08–0.13 |
0.60–0.90 |
0.040 |
0.08–0.13 |
|
1110 |
0.08–0.13 |
0.30–0.60 |
0.040 |
0.08–0.13 |
|
1116 |
0.14–0.20 |
1.10–1.40 |
0.040 |
0.16–0.23 |
|
1117 |
0.14–0.20 |
1.00–1.30 |
0.040 |
0.08–0.13 |
|
1118 |
0.14–0.20 |
1.30–1.60 |
0.040 |
0.08–0.13 |
|
1119 |
0.14–0.20 |
1.00–1.30 |
0.040 |
0.24–0.33 |
|
1132 |
0.27–0.34 |
1.35–1.65 |
0.040 |
0.08–0.13 |
|
1137 |
0.32–0.39 |
1.35–1.65 |
0.040 |
0.08–0.13 |
|
1139 |
0.35–0.43 |
1.35–1.65 |
0.040 |
0.13–0.20 |
|
1140 |
0.37–0.44 |
0.70–1.00 |
0.040 |
0.08–0.13 |
|
1141 |
0.37–0.45 |
1.35–1.65 |
0.040 |
0.08–0.13 |
|
1144 |
0.40–0.48 |
1.35–1.65 |
0.040 |
0.24–0.33 |
|
1145 |
0.42–0.49 |
0.70–1.00 |
0.040 |
0.04–0.07 |
|
1146 |
0.42–0.49 |
0.70–1.00 |
0.040 |
0.08–0.13 |
|
1151 |
0.48–0.55 |
0.70–1.00 |
0.040 |
0.08–0.13 |
🔹
Rephosphorized & Resulfurized Carbon Steels
|
Grade |
Carbon |
Manganese |
Phosphorus |
Sulfur |
Lead |
|
1211 |
0.13 max |
0.60–0.90 |
0.07–0.12 |
0.10–0.15 |
— |
|
1212 |
0.13 max |
0.70–1.00 |
0.07–0.12 |
0.16–0.23 |
— |
|
1213 |
0.13 max |
0.70–1.00 |
0.07–0.12 |
0.24–0.33 |
— |
|
1215 |
0.09 max |
0.75–1.05 |
0.04–0.09 |
0.26–0.35 |
— |
|
12L13 |
0.13 max |
0.70–1.00 |
0.07–0.12 |
0.24–0.33 |
0.15–0.35 |
|
12L14 |
0.15 max |
0.85–1.15 |
0.04–0.09 |
0.26–0.35 |
0.15–0.35 |
|
12L15 |
0.09 max |
0.75–1.05 |
0.04–0.09 |
0.26–0.35 |
0.15–0.35 |
🔹
High-Manganese Carbon Steels
|
Grade |
Carbon (%) |
Manganese (%) |
Phosphorus (Max %) |
Sulfur (Max %) |
|
1513 |
0.10–0.16 |
1.10–1.40 |
0.040 |
0.050 |
|
1518 |
0.15–0.21 |
1.10–1.40 |
0.040 |
0.050 |
|
1522 |
0.18–0.24 |
1.10–1.40 |
0.040 |
0.050 |
|
1524 |
0.19–0.25 |
1.35–1.65 |
0.040 |
0.050 |
|
1525 |
0.23–0.29 |
0.80–1.10 |
0.040 |
0.050 |
|
1526 |
0.22–0.29 |
1.10–1.40 |
0.040 |
0.050 |
|
1527 |
0.22–0.29 |
1.20–1.50 |
0.040 |
0.050 |
|
1536 |
0.30–0.37 |
1.20–1.50 |
0.040 |
0.050 |
|
1541 |
0.36–0.44 |
1.35–1.65 |
0.040 |
0.050 |
|
1547 |
0.43–0.51 |
1.35–1.65 |
0.040 |
0.050 |
|
1548 |
0.44–0.52 |
1.10–1.40 |
0.040 |
0.050 |
|
1551 |
0.45–0.56 |
0.85–1.15 |
0.040 |
0.050 |
|
1552 |
0.47–0.55 |
1.20–1.50 |
0.040 |
0.050 |
|
1561 |
0.55–0.65 |
0.75–1.05 |
0.040 |
0.050 |
|
1566 |
0.60–0.71 |
0.85–1.15 |
0.040 |
0.050 |
|
1572 |
0.65–0.76 |
1.00–1.30 |
0.040 |
0.050 |
🔹
Merchant Quality M-Series Carbon Steel Bars
|
Grade |
Carbon (%) |
Manganese (%) |
Phosphorus (Max %) |
Sulfur (Max %) |
|
M1008 |
0.10 max |
0.25–0.60 |
0.04 |
0.05 |
|
M1010 |
0.07–0.14 |
0.25–0.60 |
0.04 |
0.05 |
|
M1012 |
0.09–0.16 |
0.25–0.60 |
0.04 |
0.05 |
|
M1015 |
0.12–0.19 |
0.25–0.60 |
0.04 |
0.05 |
|
M1017 |
0.14–0.21 |
0.25–0.60 |
0.04 |
0.05 |
|
M1020 |
0.17–0.24 |
0.25–0.60 |
0.04 |
0.05 |
|
M1023 |
0.19–0.27 |
0.25–0.60 |
0.04 |
0.05 |
|
M1025 |
0.20–0.30 |
0.25–0.60 |
0.04 |
0.05 |
|
M1031 |
0.26–0.36 |
0.25–0.60 |
0.04 |
0.05 |
|
M1044 |
0.40–0.50 |
0.25–0.60 |
0.04 |
0.05 |
Alloy & Carbon Steel Grades
|
Grade |
C
(%) |
Mn
(%) |
P
Max (%) |
S
Max (%) |
Si
(%) |
Ni
(%) |
Cr
(%) |
Mo
(%) |
|
4028 |
0.25–0.30 |
0.70–0.90 |
0.035 |
0.035–0.050 |
0.15–0.35 |
— |
— |
0.20–0.30 |
|
4032 |
0.30–0.35 |
0.70–0.90 |
0.035 |
0.040 |
0.15–0.35 |
— |
— |
0.20–0.30 |
|
4037 |
0.35–0.40 |
0.70–0.90 |
0.035 |
0.040 |
0.15–0.35 |
— |
— |
0.20–0.30 |
|
4042 |
0.40–0.45 |
0.70–0.90 |
0.035 |
0.040 |
0.15–0.35 |
— |
— |
0.20–0.30 |
|
4047 |
0.45–0.50 |
0.70–0.90 |
0.035 |
0.040 |
0.15–0.35 |
— |
— |
0.20–0.30 |
|
4118 |
0.18–0.23 |
0.70–0.90 |
0.035 |
0.040 |
0.15–0.35 |
— |
0.40–0.60 |
0.08–0.15 |
|
4120 |
0.18–0.23 |
0.90–1.20 |
0.035 |
0.040 |
0.15–0.35 |
— |
0.40–0.60 |
0.13–0.20 |
|
4121 |
0.18–0.23 |
0.75–1.00 |
0.035 |
0.040 |
0.15–0.35 |
— |
0.45–0.65 |
0.20–0.30 |
|
4130 |
0.28–0.33 |
0.40–0.60 |
0.035 |
0.040 |
0.15–0.35 |
— |
0.80–1.10 |
0.15–0.25 |
|
4140 |
0.38–0.43 |
0.75–1.00 |
0.035 |
0.040 |
0.15–0.35 |
— |
0.80–1.10 |
0.15–0.25 |
|
4145 |
0.43–0.48 |
0.75–1.00 |
0.035 |
0.040 |
0.15–0.35 |
— |
0.80–1.10 |
0.15–0.25 |
|
4161 |
0.56–0.64 |
0.75–1.00 |
0.035 |
0.040 |
0.15–0.35 |
— |
0.70–0.90 |
0.25–0.35 |
|
4320 |
0.17–0.22 |
0.45–0.65 |
0.035 |
0.040 |
0.15–0.35 |
1.65–2.00 |
0.40–0.60 |
0.20–0.30 |
|
4340 |
0.38–0.43 |
0.65–0.85 |
0.025 |
0.025 |
0.15–0.35 |
1.65–2.00 |
0.70–0.90 |
0.20–0.30 |
|
4615 |
0.13–0.18 |
0.45–0.65 |
0.035 |
0.040 |
0.15–0.35 |
1.65–2.00 |
— |
0.20–0.30 |
|
4620 |
0.17–0.22 |
0.45–0.65 |
0.035 |
0.040 |
0.15–0.35 |
1.65–2.00 |
— |
0.20–0.30 |
|
4718 |
0.16–0.21 |
0.70–0.90 |
0.035 |
0.040 |
0.15–0.35 |
0.90–1.20 |
0.35–0.55 |
0.30–0.40 |
|
4720 |
0.17–0.22 |
0.50–0.70 |
0.035 |
0.040 |
0.15–0.35 |
0.90–1.20 |
0.35–0.55 |
0.15–0.25 |
|
4815 |
0.13–0.18 |
0.40–0.60 |
0.035 |
0.040 |
0.15–0.35 |
3.25–3.75 |
— |
0.20–0.30 |
|
4820 |
0.18–0.23 |
0.50–0.70 |
0.035 |
0.040 |
0.15–0.35 |
3.25–3.75 |
— |
0.20–0.30 |
|
5015 |
0.12–0.17 |
0.30–0.50 |
0.035 |
0.040 |
0.15–0.35 |
— |
0.30–0.50 |
— |
|
5046 |
0.43–0.48 |
0.75–1.00 |
0.035 |
0.040 |
0.15–0.35 |
— |
0.20–0.35 |
— |
|
5115 |
0.13–0.18 |
0.70–0.90 |
0.035 |
0.040 |
0.15–0.35 |
— |
0.70–0.90 |
— |
|
5140 |
0.38–0.43 |
0.70–0.90 |
0.035 |
0.040 |
0.15–0.35 |
— |
0.70–0.90 |
— |
|
5150 |
0.48–0.53 |
0.70–0.90 |
0.035 |
0.040 |
0.15–0.35 |
— |
0.70–0.90 |
— |
|
5160 |
0.56–0.61 |
0.75–1.00 |
0.035 |
0.040 |
0.15–0.35 |
— |
0.70–0.90 |
— |
|
E52100 |
0.98–1.10 |
0.25–0.45 |
0.025 |
0.025 |
0.15–0.35 |
— |
1.30–1.60 |
— |
|
52100B |
0.93–1.05 |
0.25–0.45 |
0.025 |
0.015 |
0.15–0.35 |
— |
1.30–1.60 |
— |
|
6150 |
0.48–0.53 |
0.70–0.90 |
0.035 |
0.040 |
0.15–0.35 |
— |
0.80–1.10 |
(0.15 min V) |
|
9255 |
0.51–0.59 |
0.70–0.95 |
0.035 |
0.040 |
1.80–2.20 |
— |
— |
— |
|
9260 |
0.56–0.64 |
0.75–1.00 |
0.035 |
0.040 |
1.80–2.20 |
— |
— |
— |
|
E9310 |
0.08–0.13 |
0.45–0.65 |
0.025 |
0.025 |
0.15–0.30 |
3.00–3.50 |
1.00–1.40 |
0.08–0.15 |
Notes:
·
Silicon may be specified as 0.10% max
for severe cold-formed parts.
·
Optional limits: Cu 0.30% max, Al 0.050% max, O 0.0015% max.
·
Boron steels typically contain 0.0005–0.003%
B (up to 0.005% if Ti not added).
Mechanical Properties
Mechanical property requirements are defined either directly within the applicable grade specification or as agreed upon at the time of order. Typical mechanical tests may include:
Tensile strength
Yield strength
Elongation
Reduction of area
Hardness testing
For alloy steel grades intended for quenching and tempering, strength levels depend on heat treatment parameters and section size.
Surface Quality Requirements
The specification establishes acceptable limits for:
Surface seams
Laps
Cracks
Decarburization
Scale
Surface imperfections must not exceed specified limits and should not adversely affect the performance of the final component. Additional surface inspection methods may be required depending on application.
Applications
ASTM A 29/A 29M-03 steel bars are used extensively in:
Automotive components (shafts, gears, axles, fasteners)
Oil and gas equipment
Industrial machinery
Construction equipment
Power transmission systems
Forged mechanical parts
The specification supports a wide range of carbon and alloy grades used for both general engineering and high-strength mechanical applications.
Advantages of ASTM A 29/A 29M-03
Provides standardized delivery conditions
Ensures consistent dimensional tolerances
Supports multiple steel grades
Flexible heat treatment options
Broad industrial acceptance
Suitable for both domestic and international markets
Conclusion
ASTM A 29/A 29M-03 is a comprehensive standard governing general requirements for hot-wrought carbon and alloy steel bars. By defining uniform delivery conditions, testing procedures, dimensional tolerances, and inspection criteria, it ensures reliable performance across diverse engineering and mechanical applications. This standard remains a cornerstone specification for manufacturers, suppliers, and end users seeking consistent quality in carbon and alloy steel bar products.
FOR REQUIREMENT OF THIS GRADE OR FOR DETAIL CONTACT US AT :-
LADHANI METAL CORPORATION, MUMBAI, INDIA
