YS STEEL manufactures and distributes hot-rolled steel channel bars from 50 mm to 400 mm in height. Cold-formed steel channel bars are also available in smaller and thinner profiles for light-gauge construction, racking systems, and enclosure frames. The hot-rolled process produces a thicker web and flange with a larger internal radius, which improves toughness and fatigue resistance. Cold-formed channels provide tighter corners, lighter weight, and more flexibility in custom dimensions.
YS STEEL supplies steel channel bar with the following standard dimensional range and customizable options. All dimensions are in millimeters unless otherwise stated. Tolerances are in accordance with ASTM A6/A6M, EN 10034, JIS G3192, or GB/T 706 depending on the selected standard.
The table below lists common hot-rolled steel channel bar sizes supplied by YS STEEL. The values are theoretical and may vary slightly depending on the rolling mill and standard. Use these values for preliminary design calculations only.
| Height × Flange Width × Web Thickness (mm) | Weight (kg/m) | Section Area (cm²) | Moment of Inertia Ix (cm⁴) | Section Modulus Wx (cm³) |
|---|---|---|---|---|
| 50 × 25 × 5 | 2.36 | 3.01 | 10.6 | 4.2 |
| 75 × 40 × 5 | 5.30 | 6.75 | 39.4 | 10.5 |
| 100 × 50 × 5 | 8.00 | 10.2 | 101 | 20.2 |
| 125 × 65 × 6 | 13.4 | 17.1 | 250 | 40.0 |
| 150 × 75 × 6.5 | 18.6 | 23.7 | 508 | 67.7 |
| 200 × 80 × 7.5 | 26.4 | 33.6 | 1250 | 125 |
| 250 × 90 × 8 | 35.5 | 45.2 | 2630 | 210 |
| 300 × 90 × 9 | 46.1 | 58.7 | 4620 | 308 |
| 380 × 100 × 10.5 | 67.4 | 85.9 | 10000 | 526 |
YS STEEL steel channel bar is produced from fully killed steel with controlled chemical composition. The table below shows minimum yield strength, tensile strength range, and minimum elongation for the most frequently ordered grades.
| Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Impact Test |
|---|---|---|---|---|
| ASTM A36 | 250 min | 400–550 | 20 min | Not required |
| ASTM A572 Gr 50 | 345 min | 450 min | 18 min | Not required |
| ASTM A992 | 345–450 | 450 min | 18 min | Not required |
| EN 10025 S235JR | 235 min | 360–510 | 24 min | 20 J at 20°C |
| EN 10025 S275JR | 275 min | 410–560 | 22 min | 20 J at 20°C |
| EN 10025 S355JR | 355 min | 470–630 | 20 min | 20 J at 20°C |
| EN 10025 S355J2 | 355 min | 470–630 | 20 min | 27 J at -20°C |
| JIS G3101 SS400 | 245 min | 400–510 | 21 min | Not required |
| GB/T 706 Q235B | 235 min | 370–500 | 26 min | 20 J at 20°C |
| GB/T 706 Q355B | 355 min | 470–630 | 22 min | 20 J at 20°C |
The steel channel bar is a versatile structural member used across many industries. Its flat back surface makes it easy to attach to columns, walls, and equipment frames, while the open side allows for bolted or welded connections without internal access problems. YS STEEL supplies steel channel bar to contractors, fabricators, and OEM manufacturers for the following applications:
Q: What is the difference between a steel channel bar and a steel angle bar?
A: A steel channel bar has a C-shaped cross-section with two flanges attached to one side of a web, which provides higher bending strength in the web plane and allows easier connection to flat surfaces. A steel angle bar has an L-shaped cross-section with two legs at 90 degrees. Angles are primarily used for bracing, brackets, and connections, while steel channel bars are preferred for beams, frames, rails, and supports where loads act perpendicular to the web. The channel bar also has better torsional resistance than a single angle but may require more complex end connections due to its open shape.
Q: Does YS STEEL provide mill test certificates for steel channel bar?
A: Yes. Every shipment of steel channel bar from YS STEEL includes a mill test certificate according to EN 10204 3.1. The certificate reports heat number, chemical composition, yield strength, tensile strength, elongation, and impact test results where applicable. For critical applications, EN 10204 3.2 certification with third-party inspection can be arranged. The test values must meet the requirements of the selected standard and grade. YS STEEL also retains copies of all certificates for at least five years for traceability and warranty support.
Q: How do I select the correct steel channel bar size for my project?
A: Start by calculating the maximum bending moment, shear force, and deflection limit for the member based on applied loads and span length. Select a steel channel bar with a section modulus greater than the required value. Check web shear capacity and local buckling if the section is slender. For compression members, check Euler buckling and consider lateral-torsional buckling if the channel is not continuously braced. Connection details such as bolt spacing, edge distance, and weld length must also be verified. YS STEEL engineers can assist with preliminary size selection using AISC, Eurocode 3, or GB 50017 design provisions. Provide your loading conditions, span, and support type to receive a recommended size and grade.
Q: What is the standard length of steel channel bar from YS STEEL?
A: Standard stock lengths are 6 meters, 9 meters, and 12 meters. These lengths are chosen to optimize container loading and reduce cutting waste. For special requirements, YS STEEL can supply lengths from 4 meters to 18 meters. Cut-to-length accuracy is kept to ±2 mm. Both ends can be deburred or chamfered for safe handling and easier fit-up. If you need lengths longer than 12 meters, YS STEEL can arrange flat-rack or open-top container shipping with proper load securing.
