Source premium Q345B Steel Billets specifically engineered for high-strength container plate production. Excellent weldability, impact toughness, and yield strength for durable shipping containers. Request a quote today.
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Product details
Q345B container plate steel billet is a premium low-alloy high-strength structural steel specifically engineered for container manufacturing and related heavy-duty applications. Compliant with GB/T 1591-2008 standards, this grade offers an optimal balance of strength, toughness, and weldability, making it the material of choice for durable, load-bearing container structures.
| Parameter | Value | Remarks |
|---|---|---|
| Standard | GB/T 1591-2008 | Low alloy high-strength structural steel |
| Grade | Q345B | Impact tested at 20℃ |
| Chemical Composition (wt%) | ||
| – Carbon (C) | ≤0.20 | |
| – Silicon (Si) | ≤0.55 | |
| – Manganese (Mn) | ≤1.70 | |
| – Phosphorus (P) | ≤0.040 | |
| – Sulfur (S) | ≤0.040 | |
| – Niobium (Nb) | ≤0.07 | Microalloying element |
| – Vanadium (V) | ≤0.15 | |
| – Titanium (Ti) | ≤0.20 | |
| – Nitrogen (N) | ≤0.012 | |
| Mechanical Properties | ||
| – Yield Strength (ReL) | ≥345 MPa | For thickness ≤16mm; use Rp0.2 if yield not obvious |
| – Tensile Strength (Rm) | 470–630 MPa | |
| – Elongation (A) | ≥21% | |
| – Impact Energy (Akv) | ≥34 J | At 20℃, longitudinal specimen |
| – Bending Test | 180° | Bend diameter: 2a for ≤16mm; 3a for >16mm |
| Delivery Condition | Hot rolled, normalized, normalized + tempered, TMCP | As per order requirements |
| Typical Applications | Container plates, frames, bridges, construction machinery | Good weldability and formability |
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