Chemical Composition
The main chemical elements of Q235 steel beams include Carbon (C), Silicon (Si), Manganese (Mn), Phosphorus (P), and Sulfur (S). Below is a clear breakdown of the chemical composition for each grade:
| Steel Grade | Standard Steel Grade | C % (≤) | Si % (≤) | Mn % (≤) | P % (≤) | S % (≤) |
|---|---|---|---|---|---|---|
| Q235 | Q235A | 0.22 | 0.35 | 1.4 | 0.045 | 0.05 |
| Q235 | Q235B | 0.20 | 0.35 | 1.4 | 0.045 | 0.045 |
| Q235 | Q235C | 0.17 | 0.35 | 1.4 | 0.04 | 0.04 |
| Q235 | Q235D | 0.17 | 0.35 | 1.4 | 0.035 | 0.035 |
Note: Standard steel grades are classified from A to D, with each grade having stricter control over chemical composition and mechanical performance.
Mechanical Properties
| Steel Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation % |
|---|---|---|---|
| Q235 | 235 | 370–500 | 26 |
The mechanical properties may vary slightly depending on production methods and specific regulations.
Typical Beam Dimensions
Q235 steel beams can be produced in various thicknesses, widths, and lengths to meet structural and construction requirements.
| Thickness (mm) | Width (m) | Length (m) |
|---|---|---|
| 3–6 | 1.5–2 | 3–12 |
| 8–12 | 1.5–3 | 3–12 |
| 14–20 | 1.5–3 | 3–12 |
| 22–40 | 1.5–3 | 3–12 |
| 44–100 | 1.5–3 | 3–12 |
| 110–200 | 1.5–3 | 3–12 |
Width and length ranges are flexible depending on customer requirements.
Prominent Advantages of Q235 Steel Beams
High Strength: Tensile strength 370–500 MPa and yield strength 235 MPa ensures structural reliability for heavy load applications.
Good Weldability: Easy to weld, bend, and form into beams, making it ideal for construction and machinery.
Corrosion Resistance: Q235 beams resist oxidation and perform well in outdoor or mildly corrosive environments.
Versatility: Suitable for bridges, building frameworks, machinery supports, automotive structures, and other industrial applications.
Cost-Effective: Offers an excellent balance of performance and affordability for large-scale construction and manufacturing projects.
FAQ
What are the mechanical properties of Q235 steel beams?
Yield Strength: 235 MPa
Tensile Strength: 370–500 MPa
Elongation: 26%
What are the mechanical properties of Q235 steel beams?
Yield Strength: 235 MPa
Tensile Strength: 370–500 MPa
Elongation: 26%
