This 150x150mm Q235B small square billet offers enhanced material volume for components needing greater structural support while retaining the cost-effectiveness and versatility of Q235B grade steel. Its consistent mechanical properties and excellent processability make it a reliable choice for medium-scale fabrication projects where size and durability are key considerations….
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Product details
The Small Square Billet 150x150mm Q235B is a robust carbon structural steel solution engineered to excel in medium-to-large-scale manufacturing and construction projects. Compliant with GB/T 700-2006 standards, this 150x150mm square billet combines enhanced material volume, reliable mechanical performance, and exceptional workability, making it a go-to choice for fabricators seeking a cost-effective material for components requiring increased structural support.
| Parameter | Value | Remarks |
|---|---|---|
| Standard | GB/T 700-2006 | Carbon structural steel standard |
| Grade | Q235B | Impact tested at 20℃ |
| Chemical Composition (wt%) | ||
| – Carbon (C) | ≤0.20 | Balances strength and weldability for medium-section billets |
| – Silicon (Si) | ≤0.35 | Aids deoxidation and enhances structural stability |
| – Manganese (Mn) | ≤1.40 | Improves toughness and workability in fabrication |
| – Phosphorus (P) | ≤0.045 | Minimized to prevent cold brittleness in thicker sections |
| – Sulfur (S) | ≤0.045 | Controlled to reduce hot cracking during processing |
| Mechanical Properties | ||
| – Yield Strength (ReL) | ≥235 MPa | Ensures load-bearing capacity for medium-to-large components |
| – Tensile Strength (Rm) | 370–500 MPa | Provides reliable structural integrity under stress |
| – Elongation (A) | ≥26% | Excellent ductility for bending, forming, and welding |
| – Impact Energy (Akv) | ≥27 J | At 20℃ (longitudinal specimen), resists impact fracture |
| – Bending Test | 180° | Bend diameter: 2a (where ‘a’ = 150mm, for thickness >60mm) |
| Dimensions | 150×150mm (square cross-section) | Nominal size; tolerances comply with GB/T 702-2017 |
| Length | 6–12m (customizable) | Standard delivery range; longer lengths available on request |
| Surface Quality | Free from cracks, folds, and excessive scale | Ensures suitability for welding, machining, and coating |
| Delivery Condition | Hot rolled (standard); cold drawn (optional) | Hot rolled for general use; cold drawn for tighter dimensional accuracy |
| Typical Applications | Medium-to-large structural components, machinery frames, heavy-duty brackets, agricultural equipment, construction supports, and custom metal fabrications | Ideal for projects requiring increased material volume with balanced strength and workability |
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