ASTM A36 Structural Channel (C-Channel): Properties & Dimensions
ASTM A36/A6 · Published: 2026-06-01 · Updated: 2026-06-02
ASTM A36 structural channels (C-channels) are hot-rolled carbon steel sections with a distinctive C-shaped cross-section, widely used for structural framing, vehicle frames, trailer construction, and industrial shelving. Available in standard...
ASTM A36 structural channels (C-channels) are hot-rolled carbon steel sections with a distinctive C-shaped cross-section, widely used for structural framing, vehicle frames, trailer construction, and industrial shelving. Available in standard AISC sizes from C3×4.1 to C15×50. The parallel flange design simplifies bolted connections to beams, columns, and base plates. As with all A36 products, excellent weldability and good machinability at economical cost. Galvanizing is recommended for exterior or corrosive environments. Channels are specified by depth (inches), weight (lbs/ft), and length.
Quick Facts
| Category | Carbon Steel |
| Standard | ASTM A36/A6 |
| Density | 7.85 g/cm³ |
| Yield Strength | 250 MPa (36 ksi) |
| Tensile Strength | 400-550 MPa |
Global Equivalents & Cross-Reference
| Alternative Standard / Grade | Action |
|---|---|
| S275JR C-Channel | Compare |
| Q235 C-Channel | Compare |
| SS400 Channel | Compare |
Related Materials
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Frequently Asked Questions
What is the difference between C-channel and MC-channel?
MC (Miscellaneous Channel) is not an A36 designation but refers to channels produced to different dimensional standards—typically with non-parallel flanges or special web thicknesses, often used in the automotive and trailer industry. C-channel follows AISC standard dimensions with parallel flanges.
References & International Standards
- ASTM International. Standard Specifications for Steel & Metal Alloys. astm.org
- International Organization for Standardization (ISO). Metallic Materials — Cross-Reference Database. iso.org
- American Iron and Steel Institute (AISI). Steel Grade Designations & Equivalents. steel.org
- European Committee for Standardization (CEN). EN Steel Standards & Numbering System. cencenelec.eu