
Rectangular Billet 200x240mm Q345B
Our 200mm x 240mm Rectangular Billet represents premium-grade low-alloy high-strength steel manufactured
This parameter table outlines the key specifications of 16Mn Angle Steel 100x100mm, a robust material designed for high-strength structural applications. Its balanced alloy composition ensures excellent weldability and durability, making it suitable for demanding industrial and construction environments.


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Product details
| Parameter | Value/Description | Unit | Remarks |
|---|---|---|---|
| Material | 16Mn (Low-Alloy High-Strength Structural Steel) | — | Chemical Composition: C ≤0.18%, Si ≤0.55%, Mn 1.20–1.60%, P ≤0.040%, S ≤0.040% |
| Section Size | 100×100 | mm | Equal-leg angle, both legs 100mm |
| Thickness | 8/10/12/14 | mm | Standard available options |
| Weight per Meter | 12.2/15.1/17.8/20.5 | kg/m | Corresponding to 8/10/12/14mm thickness |
| Length | 6000–12000 (Customizable) | mm | Standard 6m/9m; cut-to-order available |
| Cross-Sectional Area | 15.626 (8mm) | cm² | Example value; varies with thickness |
| Tensile Strength | ≥490 | MPa | Minimum at room temperature |
| Yield Strength | ≥315 | MPa | Minimum at room temperature |
| Elongation (δ5) | ≥21 | % | Minimum at room temperature |
| Impact Toughness | ≥34 | J | Charpy V-notch impact value at room temperature |
| Manufacturing Standard | GB/T 1591-2018 | — | Compliant with Chinese national standard for low-alloy structural steels |
| Surface Treatment | Mill finish (black) / Hot-dip galvanized / Epoxy painted | — | Galvanized option provides enhanced corrosion resistance for outdoor use |
| Application | Structural frames, bridge bracing, machinery supports, industrial platforms | — | Ideal for heavy-load bearing in construction and engineering projects |
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