Q345B Channel Steel 120x60mm

Q345B Channel Steel 120x60mm

This parameter table outlines the key technical specifications of Q345B Channel Steel 120x60mm, a high-performance profile valued for its superior strength, durability, and versatility in demanding structural and industrial applications.

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Product details

Q345B Channel Steel 120x60mm is a premium low-alloy high-strength structural profile, engineered to deliver exceptional performance in demanding construction, industrial, and infrastructure applications. Compliant with China’s GB/T 1591-2018 standard, this channel steel features a robust 120x60mm cross-section (web height x flange width), combining superior load-bearing capacity with impressive workability for projects requiring enhanced strength and durability.

Parameter	Value/Description	Unit	Remarks
Material	Q345B (Low-Alloy High-Strength Structural Steel)	—	Chemical Composition: C ≤0.20%, Si ≤0.50%, Mn 1.00–1.60%, P ≤0.040%, S ≤0.040%, with trace alloying elements (Nb, V, Ti)
Section Size	120×60	mm	Channel section with web height 120mm and flange width 60mm
Thickness Options	5/6/8/10	mm	Standard thicknesses for web and flange
Weight per Meter	9.72 (5mm) / 11.65 (6mm) / 15.46 (8mm) / 19.16 (10mm)	kg/m	Corresponding to respective thicknesses
Length Range	6000–12000 (Customizable)	mm	Standard lengths; custom cuts available for project-specific needs
Cross-Sectional Area	12.38 (5mm) / 14.83 (6mm) / 19.68 (8mm) / 24.39 (10mm)	cm²	Varies with thickness
Yield Strength (Minimum)	≥345	MPa	At room temperature
Tensile Strength	470–630	MPa	Typical range at room temperature
Elongation (δ5, Minimum)	≥22	%	At room temperature
Impact Toughness	≥34	J	Longitudinal specimens, tested at 20°C
Manufacturing Standard	GB/T 1591-2018	—	Compliant with Chinese national standard for low-alloy high-strength structural steels
Surface Treatment	Mill finish (black) / Hot-dip galvanized / Epoxy coating	—	Galvanized option ideal for outdoor or corrosive environments
Typical Applications	Medium-to-heavy structural frameworks, bridge components, industrial machinery supports, high-load conveyor systems, and infrastructure projects	—	Suited for applications requiring higher strength than carbon steel channels