This Small Square Billet 80x80mm Q235B is a commonly used carbon structural steel product with balanced properties that make it suitable for a variety of small-scale structural and mechanical applications. Its relatively small size and good workability allow for easy processing into various desired shapes and components.
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Product details
The Small Square Billet 80x80mm Q235B is a remarkable carbon structural steel product that has earned its place in a wide range of small-scale manufacturing and construction applications. Compliant with the GB/T 700-2006 standard, this billet combines simplicity, affordability, and excellent workability, making it an ideal choice for fabricating various components where strength and formability need to be well-balanced.
| Parameter | Value | Remarks |
|---|---|---|
| Standard | GB/T 700-2006 | Carbon structural steel standard applicable here |
| Grade | Q235B | Impact tested at 20℃ |
| Chemical Composition (wt%) | ||
| – Carbon (C) | ≤0.20 | Affects the strength and weldability of the billet |
| – Silicon (Si) | ≤0.35 | Helps in deoxidation and has an impact on the steel’s properties |
| – Manganese (Mn) | ≤1.40 | Contributes to strengthening and improving toughness |
| – Phosphorus (P) | ≤0.045 | Kept at a relatively low level to avoid brittleness |
| – Sulfur (S) | ≤0.045 | Minimized to reduce the risk of hot cracking during processing |
| – Oxygen (O) | As per standard limits | Controlled to ensure good quality |
| Mechanical Properties | ||
| – Yield Strength (ReL) | ≥235 MPa | Minimum value indicating its ability to withstand load without excessive deformation |
| – Tensile Strength (Rm) | 370 – 500 MPa | Ensures the overall structural integrity under load |
| – Elongation (A) | ≥26% | Provides good ductility for fabrication processes like bending, forging, etc. |
| – Impact Energy (Akv) | ≥27 J | At 20℃ (longitudinal specimen), important for resisting impact and fracture |
| – Bending Test | 180° | Bend diameter: a (where ‘a’ represents the side length of the square billet, here 80mm) for thickness ≤60mm |
| Dimensions | 80 x 80 mm (square cross-section) | Nominal size; there may be allowable tolerance ranges in actual production as per relevant standards |
| Length | Customizable according to specific requirements | Usually supplied in certain lengths as per customer orders, common lengths might range from a few meters to several meters |
| Surface Quality | Generally required to be free from cracks, significant surface defects like deep scratches, and excessive oxidation scale | To meet the quality requirements for further processing or application |
| Delivery Condition | Hot rolled, cold drawn (depending on specific needs) | Different delivery conditions can be chosen to suit different fabrication or usage scenarios |
| Typical Applications | Structural components in light construction, small machinery parts, brackets, frames for small equipment, and other applications where relatively lower strength but good formability is required |
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