ASTM A36 structural steel channel is one of the most commonly used types of carbon steel in construction and general structural applications. It's valued for its excellent weldability, machinability, and affordability.
Key Features of ASTM A36 Steel Channel
Standard Specification: ASTM A36 is the standard for carbon structural steel defined by the American Society for Testing and Materials (ASTM).
Shape: Typically a C-shaped cross-section with a wide web and tapered flanges.
Material Composition:
Carbon: ≤ 0.26%
Manganese: 0.60–0.90%
Phosphorus: ≤ 0.04%
Sulfur: ≤ 0.05%
Mechanical Properties:
Yield Strength: ≥ 250 MPa (36,000 psi)
Tensile Strength: 400–550 MPa (58,000–80,000 psi)
Elongation: ≥ 20% in 200 mm
Good ductility and weldability
Available Sizes: Commonly designated like C6 x 8.2, which means:
6" deep channel
Weighs 8.2 lbs per foot
Applications of ASTM A36 Steel Channel
Building Construction
Floor joists, studs, lintels, and wall framing.
Support beams in light commercial and residential buildings.
Bridges and Infrastructure
Secondary structural components like railings, guardrails, bracing, and minor supports.
Machinery and Equipment Frames
Machine bases, enclosures, or supporting racks.
Vehicle and Trailer Frames
Lightweight framing for trailers, racks, and utility structures.
General Fabrication
Welded frames, platforms, stairs, handrails, and support brackets.
Industrial Racks and Supports
Storage racks, pipe supports, and shelving systems.
Fabrication Advantages
Easily cut, drilled, welded, and machined.
Compatible with standard fasteners and joining methods.
Readily available in most regions and relatively low in cost.
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