The Small Square Billet 130x130mm Q235B empowers engineers and fabricators to tackle a wide range of projects with confidence. Its combination of practical dimensions, consistent performance, and ease of processing makes it a cost-effective solution for both small-batch productions and larger-scale manufacturing.
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Product details
The Small Square Billet 130x130mm Q235B is a versatile carbon structural steel product designed to meet the demands of medium-scale manufacturing and construction projects. Compliant with GB/T 700-2006 standards, this 130x130mm square billet combines robust dimensional stability, consistent mechanical performance, and excellent workability, making it an ideal choice for fabricators seeking a cost-effective solution for components requiring enhanced material volume.
| 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 improves structural stability |
| – Manganese (Mn) | ≤1.40 | Enhances toughness and workability during fabrication |
| – Phosphorus (P) | ≤0.045 | Minimized to prevent cold brittleness in medium sections |
| – Sulfur (S) | ≤0.045 | Controlled to reduce hot cracking during processing |
| Mechanical Properties | ||
| – Yield Strength (ReL) | ≥235 MPa | Ensures reliable load-bearing capacity for medium-scale components |
| – Tensile Strength (Rm) | 370–500 MPa | Provides structural integrity under operational 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’ = 130mm, for thickness >60mm) |
| Dimensions | 130×130mm (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 applications; cold drawn for tighter dimensional accuracy |
| Typical Applications | Medium-sized structural components, machinery frames, support brackets, agricultural equipment parts, and custom metal fabrications requiring increased material… |
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