Imagine the skeletal framework of skyscrapers, the backbone of bridges, or the chassis of heavy-duty trucks - all requiring materials that combine strength with cost-effectiveness. A36 hot-rolled C-channel steel serves as this uncelebrated "behind-the-scenes" hero, playing an indispensable role in construction and transportation sectors through its exceptional performance and broad applicability.
Characteristics and Advantages of A36 Hot-Rolled C-Channel Steel
Referred to as "American Standard Channel" in the industry, A36 hot-rolled C-channel steel represents a structural profile manufactured from A36 low-carbon steel. Its distinctive blue-gray rough surface offers excellent workability for various manufacturing processes. The A36 steel itself demonstrates superior weldability, formability, and mechanical processing characteristics while maintaining durability and cost-efficiency, making it an ideal choice for structural applications.
According to ASTM A36/A36M-08 standards, A36 steel serves as a general specification for carbon structural steel. Its classification as a "structural shape" requires at least one dimension (excluding length) exceeding 3 inches. The C-channel's unique design features interior flanges with approximately 16-2/3% slope, distinguishing it from "MC" channel types.
Chemical Composition and Mechanical Properties
Understanding A36 steel's chemical composition and mechanical properties provides insight into its performance advantages and appropriate applications.
Chemical Composition:
- Carbon (C): 0.26% (maximum)
- Copper (Cu): 0.2%
- Iron (Fe): 99%
- Manganese (Mn): 0.75%
- Phosphorus (P): 0.04% (maximum)
- Sulfur (S): 0.05% (maximum)
Mechanical Properties:
- Density: 0.282 lb/in³ (7.8 g/cc)
- Tensile Strength: 58,000 psi (400 MPa)
- Yield Strength: 47,700 psi (315 MPa)
- Shear Strength: 43,500 psi (300 MPa)
- Melting Point: 2,590 - 2,670°F (1,420 - 1,460°C)
- Brinell Hardness: 140
Widespread Applications
A36 hot-rolled C-channel steel's exceptional properties enable diverse applications across multiple industries:
- Structural Support: Serves as critical load-bearing components for buildings and bridges
- Trailer Manufacturing: Forms framework and structural elements for trailers
- Construction Uses: Applies to various architectural structures including roofs, walls, and flooring systems
Available Size Specifications
To accommodate varying application requirements, A36 hot-rolled C-channel steel offers multiple size specifications, including depth, width, web thickness, length, and weight measurements:
| Size |
Depth (in) |
Width (in) |
Web Thickness (in) |
Length (in) |
Weight (lb/ft) |
| 3" x 3.5# |
3 |
1.35 |
0.130 |
240.00 |
3.500 |
| 3" x 4.1# |
3 |
1.41 |
0.170 |
240.00 |
4.100 |
| 3" x 5# |
3 |
1.498 |
0.258 |
240.00 |
5.000 |
| 3" x 6# |
3 |
1.596 |
0.356 |
240.00 |
6.000 |
| 4" x 5.4# |
4 |
1.584 |
0.184 |
240.00 |
5.400 |
| 4" x 6.25# |
4 |
1.647 |
0.247 |
240.00 |
6.250 |
| 4" x 7.25# |
4 |
1.721 |
0.321 |
240.00 |
7.250 |
| 5" x 6.7# |
5 |
1.75 |
0.190 |
240.00 |
6.699 |
| 5" x 9# |
5 |
1.885 |
0.325 |
240.00 |
9.000 |
| 6" x 8.2# |
6 |
1.92 |
0.200 |
240.00 |
8.200 |
| 6" x 10.5# |
6 |
2.034 |
0.314 |
240.00 |
10.500 |
| 6" x 13# |
6 |
2.157 |
0.437 |
240.00 |
13.000 |
| 7" x 9.8# |
7 |
2.09 |
0.210 |
240.00 |
9.800 |
| 7" x 12.25# |
7 |
2.194 |
0.314 |
240.00 |
12.249 |
| 8" x 11.5# |
8 |
2.26 |
0.220 |
240.00 |
11.500 |
| 8" x 13.75# |
8 |
2.343 |
0.303 |
240.00 |
13.750 |
| 8" x 18.75# |
8 |
2.527 |
0.487 |
240.00 |
18.750 |
| 9" x 13.4# |
9 |
2.433 |
0.230 |
240.00 |
13.400 |
| 9" x 15# |
9 |
2.485 |
0.285 |
240.00 |
15.000 |
| 10" x 15.3# |
10 |
2.6 |
0.240 |
240.00 |
15.300 |
| 10" x 20# |
10 |
2.739 |
0.379 |
240.00 |
20.000 |
| 10" x 25# |
10 |
2.886 |
0.526 |
240.00 |
24.999 |
| 10" x 30# |
10 |
3.033 |
0.673 |
240.00 |
30.000 |
| 12" x 20.7# |
12 |
2.94 |
0.282 |
240.00 |
20.700 |
| 12" x 25# |
12 |
3.047 |
0.387 |
240.00 |
25.000 |
| 12" x 30# |
12 |
3.17 |
0.510 |
240.00 |
30.000 |
| 15" x 33.9# |
15 |
1.938 |
0.400 |
240.00 |
33.900 |
The chemical compositions and mechanical properties listed represent general approximations. A36 hot-rolled C-channel steel delivers reliable structural solutions through its superior performance and diversified specifications, making it a trustworthy choice for construction, transportation, and various industrial applications.
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