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Introduction
ASTM
A576/A576M is a widely recognized specification covering hot-wrought carbon
steel bars intended primarily for structural and mechanical applications. The
standard establishes requirements for chemical composition, manufacturing
process, mechanical properties (where applicable), dimensional tolerances, and
general quality parameters.
Ladhani
Metal Corporation is a manufacturer, supplier, and stockist of ASTM A 576-90
carbon steel bars, offering a comprehensive range of grades, sizes, and
finishes to meet industrial and engineering requirements.
This
specification is commonly used in applications where controlled chemical
composition and reliable mechanical performance are essential, but where the
more stringent quality requirements of special bar quality (SBQ) grades may not
be necessary.
Scope of ASTM A 576-90
ASTM A
576-90 covers:
- Hot-wrought carbon steel bars
- Rounds, squares, flats,
hexagons, and other shapes
- Bars for structural,
mechanical, and general engineering applications
- Grades produced by open-hearth,
basic-oxygen, or electric-furnace processes
The standard
primarily focuses on chemical composition requirements and general
manufacturing conditions rather than detailed mechanical property requirements
for every grade.
Chemical Composition Requirements
Nonresulfurized Carbon Steels
Low Manganese (1.00% Max or Less)
|
Grade |
Carbon (%) |
Manganese (%) |
Phosphorus (Max %) |
Sulfur (Max %) |
|
|
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 |
|
|
1012 |
0.10–0.15 |
0.30–0.60 |
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 |
|
|
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 |
|
|
1060 |
0.55–0.65 |
0.60–0.90 |
0.040 |
0.050 |
|
|
1070 |
0.65–0.75 |
0.60–0.90 |
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 |
|
|
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 |
High Manganese (Above 1.00%)
|
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 |
Resulfurized Carbon Steels
|
Grade |
Carbon (%) |
Manganese (%) |
Phosphorus (Max %) |
Sulfur (%) |
|
|
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 |
Carbon Steel Grades
|
Grade |
Carbon (%) |
Manganese (%) |
Phosphorus (Max %) |
Sulfur (%) |
|
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 and Resulfurized Carbon Steel Grades
|
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 |
— |
|
12L14 |
0.15
max |
0.85–1.15 |
0.04–0.09 |
0.26–0.35 |
0.15–0.35 |
Notes
· New designations established in accordance with ASTM E527 and SAE J1086.
· Silicon (when specified) commonly ranges: 0.10% max, 0.10–0.20%, 0.15–0.35%, or 0.20–0.40%.
· Copper may be specified as 0.20% minimum when required.
· Lead-added steels: 0.15–0.35% (designated by inserting “L” in grade, e.g., 10L45).
· Boron-treated killed steels may contain 0.0005–0.003% boron.
· Bismuth, calcium, selenium, or tellurium may be added upon agreement between purchaser and supplier.
· Silicon limits are typically not specified for rephosphorized/resulfurized steels due to reduced machinability.
Mechanical
Properties
ASTM A
576-90 does not always mandate fixed mechanical properties for all grades.
Mechanical characteristics depend on:
- Carbon content
- Heat treatment (if applied)
- Section size
- Manufacturing process
Typical
mechanical property trends:
- Lower carbon grades
(1008–1020):
- Excellent ductility
- Good weldability
- Moderate tensile strength
- Medium carbon grades
(1030–1050):
- Higher tensile strength
- Increased hardness
- Reduced ductility compared to
low-carbon grades
When
mechanical properties are required, they are typically agreed upon between
purchaser and supplier.
Forms of
Supply
ASTM A
576-90 carbon steel bars are supplied in:
- Round bars
- Square bars
- Flat bars
- Hexagonal bars
- Custom profiles
Supply
conditions include:
- As-rolled
- Normalized (if specified)
- Annealed (by agreement)
Standard
lengths:
- Random lengths
- Cut-to-length
- Fixed lengths as per order
Surface
finish:
- Hot rolled black finish
- Shot blasted
- Machined (upon request)
Dimensional
Tolerances
Dimensional
tolerances are generally governed by applicable ASTM tolerances for hot-wrought
bars. Tolerances include:
- Diameter/width tolerance
- Out-of-roundness
- Straightness
- Length variation
Special
tolerances can be supplied upon request.
Key Features
of ASTM A 576-90 Bars
- Wide range of carbon grades
- Controlled chemical composition
- Good machinability in low and
medium carbon grades
- Suitable for structural and
mechanical applications
- Cost-effective compared to
alloy steels
- Readily weldable (in low-carbon
grades)
- Heat treatable (in
medium-carbon grades)
Applications
of ASTM A 576-90 Carbon Steel Bars
ASTM A
576-90 bars are widely used in:
- Structural fabrication
- Automotive components
- Agricultural machinery
- Industrial equipment
- General engineering parts
- Shafts and axles (medium carbon
grades)
- Pins and fasteners
- Forgings
Low-carbon
grades are ideal for:
- Forming
- Bending
- Light structural parts
Medium-carbon
grades are suitable for:
- Machine components
- Gears (after heat treatment)
- Crankshafts
- Couplings
Advantages
of ASTM A 576-90 Steel Bars
- Excellent availability
- Broad grade range
- Economical solution for
general-purpose use
- Compatible with common
fabrication processes
- Good balance of strength and ductility
Quality
Assurance & Testing
Testing may
include:
- Chemical analysis
- Visual inspection
- Dimensional inspection
- Mechanical testing (if
specified)
- Ultrasonic testing (upon
request)
Material
Test Certificates (MTC) can be supplied as per order requirements.
Conclusion
ASTM A
576-90 carbon steel bars provide a reliable and economical solution for
structural and mechanical applications. With a wide range of grades and
excellent availability, they are suitable for diverse industries requiring
consistent chemical composition and dependable performance.
Ladhani
Metal Corporation supplies ASTM A 576-90 bars in various grades, sizes, and
supply conditions to meet customized industrial needs, ensuring quality,
compliance, and timely delivery.
FOR REQUIREMENT OF THIS GRADE OR FOR DETAIL CONTACT US AT :-
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