Q235 steel GB q235a q235b q235c q235d
Q235 steel GB q235a q235b q235c q235d—-Special Offers on Q235C, Q355C, Q355D, and Q355E Steel Plates: Factory Wholesale, In-Stock Inventory, Retail Cutting Services, and Nationwide Delivery.—-JBL
Q235 steel plate is a type of ordinary carbon structural steel; the “Q” in its name stands for yield strength, and the number “235” indicates a minimum yield strength of 235 MPa (for thicknesses of 16 mm or less).
| Lớp | Quality Grade | Impact Test Temperature | Deoxidation Method | Typical Applications |
|---|---|---|---|---|
| Q235A | Grade A | No impact test required | Boiling steel, semi-killed steel, or killed steel | General structures, ordinary machinery manufacturing |
| Q235B | Grade B | +20°C | Semi-killed steel or killed steel | Building structures, steel structures, machinery manufacturing, welded structures |
| Q235C | Grade C | 0°C | Killed steel | Welded structures requiring low-temperature toughness |
| Q235D | Grade D | −20°C | Killed steel | Cold-region structures, low-temperature welded structures |
| chemical element | Q235A | Q235B | Q235C | Q235D |
|---|---|---|---|---|
| C | ≤0.22 | ≤0.20 | ≤0.17 | ≤0.17 |
| Mn | ≤1.40 | ≤1.40 | ≤1.40 | ≤1.40 |
| Si | ≤0.35 | ≤0.35 | ≤0.35 | ≤0.35 |
| S | ≤0.050 | ≤0.045 | ≤0.040 | ≤0.035 |
| P | ≤0.045 | ≤0.045 | ≤0.040 | ≤0.035 |
| Lớp | Yield Strength (Thickness ≤16 mm) | Tensile Strength | Elongation (Thickness ≤40 mm) | Impact Energy (Room Temperature) | Impact Energy (Low Temperature) |
|---|---|---|---|---|---|
| Q235A | ≥235 MPa | 370–500 MPa | ≥26% | Not Required | Not Required |
| Q235B | ≥235 MPa | 370–500 MPa | ≥26% | ≥27 J (20°C) | Not Required |
| Q235C | ≥235 MPa | 370–500 MPa | ≥26% | ≥27 J (0°C) | ≥27 J (0°C) |
| Q235D | ≥235 MPa | 370–500 MPa | ≥26% | ≥27 J (−20°C) | ≥27 J (−20°C) |
Q235 Steel Plate Material Specifications Table
| 1 | 6 × 2000 × 6000 |
| 2 | 10 × 2000 × 8000 |
| 3 | 10 × 2000 × 8000 |
| 4 | 8 × 2200 × 8000 |
| 5 | 7 × 2300 × 6830 |
| 6 | 20 × 2200 × 8000 |
| 7 | 7 × 2200 × 6000 |
| 8 | 6 × 2000 × 8000 |
| 9 | 8 × 2000 × 8000 |
| 10 | 20 × 2000 × 8000 |
| 11 | 30 × 2200 × 12000 |
| 12 | 8 × 2200 × 8000 |
| 13 | 8 × 2200 × 8000 |
| 14 | 10 × 1.5 × 6 |
| 15 | 14 × 2000 × 8000 |
| 16 | 12 × 2000 × 6300 |
| 17 | 12 × 2000 × 8000 |
| 18 | 14 × 2000 × 8000 |
| 19 | 50 × 2200 × 8000 |
| 20 | 25 × 2200 × 8000 |
| 21 | 40 × 2200 × 8000 |
| 22 | 14 × 2200 × 8000 |
| 23 | 12.7 × 2438 × 7315 |
| 24 | 60 × 2200 × 12050 |
| 25 | 40 × 2200 × 9600 |
| 26 | 6.3 × 1800 × 5800 |
| 27 | 25 × 2200 × 10000 |
| 28 | 35 × 2200 × 10000 |
| 29 | 35 × 2200 × 9800 |
| 30 | 16 × 2200 × 8000 |
| 31 | 30 × 2200 × 10000 |
| 32 | 12 × 2200 × 8000 |
| 33 | 20 × 2200 × 10000 |
| 34 | 30 × 2200 × 8000 |
| 35 | 6.3 × 1780 × 6800 |
| 36 | 15 × 2840 × 5700 |
| 37 | 6 × 2000 × 8000 |
| 38 | 6.3 × 1800 × 7000 |
| 39 | 7 × 2000 × 5000 |
| 40 | 7 × 2000 × 6000 |
| 41 | 4 × 1500 × 1100 |
| 42 | 12 × 2200 × 8700 |
| 43 | 12 × 2200 × 1930 |
| 44 | 6.3 × 1800 × 6200 |
| 45 | 12 × 2500 × 4060 |
| 46 | 8 × 2200 × 6760 |
| 47 | 8 × 2200 × 8000 |
| 48 | 8 × 2000 × 8000 |
| 49 | 12 × 2500 × 4200 |
| 50 | 12 × 2500 × 12000 |
| 51 | 16 × 2500 × 3400 |
| 52 | 50 × 2200 × 2600 |
| 53 | 6.3 × 1800 × 6280 |
| 54 | 12 × 2840 × 2300 |
| 55 | 12 × 2200 × 7000 |
| 56 | 12 × 2200 × 5000 |
| 57 | 12 × 2200 × 10000 |
| 58 | 6.3 × 1800 × 7000 |
| 59 | 6 × 1850 × 6000 |
| 60 | 6 × 1900 × 6000 |
| 61 | 6 × 2000 × 6000 |
| 62 | 6 × 2000 × 8000 |
Q235 Steel Grades—-Application
Structural steel for construction, machinery manufacturing, bridges and infrastructure, construction machinery, automobiles, trucks and trailers, industrial equipment and steel platforms, warehouse racking and industrial facilities, agricultural machinery and equipment, cold-formed and stamped parts (e.g., spring washers), frames, housings, and bolts.
Q235 Steel Plate–Cost-effectiveness:
Costs are significantly lower than those of alloy steel and high-strength steel, making it suitable for budget-sensitive projects.
Q235 Steel Material—-Processing properties:
Excellent weldability (low carbon content, low risk of welding cracks).
Good plasticity; suitable for forming processes such as cold bending and stamping.
Q235 Steel—-Limitations
Strength is lower than that of low-alloy steels such as Q345; not suitable for extremely heavy-load or high-stress applications.
Corrosion resistance is moderate; surface treatment (e.g., galvanizing, painting) is required to extend service life.
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