SM490 C Bar Steel

SM490 channel steel beam, also known as structural channel steel beam, is a hot rolled carbon steel profile designed for shipbuilding and other heavy duty applications, conforming to Japanese Industrial Standard (JIS) G 3106, which specifies requirements for rolled steel for welded structures.

Chemical composition of SM490 channel steel beam

Carbon (C): ≤0.20%
Manganese (Mn): ≤1.60%
Phosphorus (P): ≤0.035% (SM490A/B), ≤0.040% (SM490YA)
Sulfur (S): ≤0.035% (SM490A/B), ≤0.040% (SM490YA)
Silicon (Si): ≤0.55%
This composition ensures good weldability, formability and toughness, making it suitable for a variety of structural applications, especially in the shipbuilding industry.

Mechanical properties of SM490 c channel

Yield strength: minimum 235 MPa (thickness ≤ 16 mm); varies with thickness
Tensile strength: 490 - 630 MPa
Elongation: ≥ 22% for thickness ≤ 16 mm; ≥ 21% for thickness > 16 mm (varies by grade)
Impact test requirements
SM490A channel c steel: Charpy V-notch impact energy at +20°C
SM490B channel steel: Charpy V-notch impact energy at 0°C
SM490YA c section steel: No specific impact test requirements

Advantages of SM490 c channel steel

High strength: The tensile strength range makes it suitable for demanding applications.
Good weldability: Can be easily welded using standard techniques.
Excellent toughness: Especially important for the shipbuilding industry, where the material must withstand the harsh marine environment.
Economically efficient: Provides the best balance between cost and performance.

Manufacturing process of GNEE SM490 channel beam

Raw material: Produced from carbon steel billets.
Rolling process: Hot rolled to achieve the desired shape and size.
Quality control: Tested for mechanical properties and chemical composition to ensure compliance with JIS G 3106 standards.
SM490 channels are available in a variety of sizes, defined by their depth, flange width, and web thickness. Typical sizes include:
Depth: Ranges from 3 inches to 15 inches (76 mm to 381 mm)
Flange width: Usually matches or slightly exceeds the depth
Web thickness: Varies depending on load-bearing requirements
Others: GNEE can also customize sizes based on customer requirements

Comparison with other grades

SS490: While both grades have similar tensile strength, SM490 is optimized for welded structures and has specific impact testing requirements.
SM400: Has lower tensile strength compared to SM490.

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