GB Standard Q355 HSLA Steel Plate
Q355 is a kind of steel. It is a low alloy high strength structural steel, widely used in bridges, vehicles, ships, buildings, pressure vessels, special equipment, etc., where "Q" means yield strength, 355 indicates that the yield strength of this steel is 355MPa, and will be with the increase in the thickness of the material to make the yield value decreases.
Q355 steel has several advantages over other types of structural steel. It has excellent mechanical properties, high strength and good weldability. Q355 steel also offers corrosion resistance, low temperature toughness and fatigue resistance. It is an economical and reliable choice for various applications in different industries.
Q355 steel is available in five quality grades: Q355B, Q355C, Q355D, Q355E, and Q355GNH.
Q355 high strength low alloy steel plate chemical composition
| Steel Grade | Quality Grade | C % (≤) | Si % (≤) | Mn (≤) | P (≤) | S (≤) | Cr (≤) | Ni (≤) | Cu (≤) | N (≤) |
| Q355 | Q355B | 0.24 | 0.55 | 1.6 | 0.035 | 0.035 | 0.30 | 0.30 | 0.40 | 0.012 |
| Q355C | 0.20 | 0.030 | 0.030 | 0.012 | ||||||
| Q355D | 0.20 | 0.025 | 0.025 | – |
q355 high strength low alloy sheet mechanical property
| Yield Strength (≥N/mm2), Thickness or Dia. (d) in mm | ||||||||||
| Steel Grade | Quality Level | d≤16 | 16< d ≤40 | 40 < d ≤63 | 63 < d ≤ 80 | 80< d ≤ 100 | 100< d≤ 150 | 150 < d≤ 200 | 200 < d ≤ 250 | 250 < d ≤ 400 |
| Q355 | Q355B | 355 | 345 | 335 | 325 | 315 | 295 | 285 | 275 | – |
| Q355C | – | |||||||||
| Q355D | 265 | |||||||||
| Tensile Strength (N/mm2), Dia. (d) mm | |||||
| Steel Grade | Quality Level | d≤100 | 100 < d ≤ 150 | 150 < d ≤ 250 | 250 < d ≤ 400 |
| Q355 | Q355B | 470 – 630 | 450 – 600 | 450 – 600 | – |
| Q355C | – | ||||
| Q355D | 450 – 600 | ||||
q355 grade high strength low alloy steel sheet Products Details
Q355B: This steel grade is known for its high strength and excellent mechanical properties. It is commonly used for structural components, such as beams and columns, and in the fabrication of heavy machinery.
Q355C: Q355C is similar to Q355B in terms of strength and mechanical properties. It is commonly used in the construction of bridges, offshore structures and other heavy-duty applications where strength and toughness are critical.
Q355D: Q355D is a high-strength structural steel with improved weldability and impact resistance compared to Q355B and Q355C. It is used in various industries such as construction, machine building and mining equipment.
Q355 hSLA structural steel plate Products image
Products Description
Products Description
Products Description
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