The Q355B equivalent ASTM material
Q355B Products Description
The equivalent ASTM material for Q355B steel is ASTM A572 Grade 50. ASTM A572 Grade 50 is a structural steel with high strength and low alloy content that is widely utilized in structural applications. Both Q355B and ASTM A572 Grade 50 have a minimum yield strength of 355 MPa (50 ksi) and possess similar mechanical properties.
ASTM A572 Grade 50 offers excellent weldability and formability, making it suitable for a wide range of structural applications, including bridges, buildings, and machinery. It has a higher strength-to-weight ratio compared to many other steel grades, providing superior load-bearing capacity.
However, it is crucial to note that, while Q355B and ASTM A572 Grade 50 have certain similarities, they are not direct counterparts.
Q355B Product Details
Q355 steel mechanical properties are listed in the data sheet below, including yield strength, tensile strength and elongation, etc.
| Yield Strength (≥ MPa), Thickness or Dia. (d) mm | ||||||||||
| Steel Grade | Quality Grade | 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 | |||||||||
| Q355N | All | – | ||||||||
| Yield Strength (≥ MPa), Thickness or Dia. (d) mm | |||||||
| Steel Grade | Quality Grade | d≤16 | 16< d ≤40 | 40 < d ≤63 | 63 < d ≤ 80 | 80< d ≤ 100 | 100< d≤ 120 |
| Q355M | All | 355 | 345 | 335 | 325 | 325 | 320 |
| Tensile Strength, MPa; Dia. (d) mm | ||||
| Steel Grade | Quality Grade | d≤100 | 100< d ≤250 | 250< d ≤400 |
| Q355 | Q355B | 470-630 | 450-600 | – |
| Q355C | – | |||
| Q355D | 450-600 | |||
| Q355N | All | – | ||
| Tensile Strength, MPa; Dia. (d) mm | |||||
| Steel Grade | Quality Grade | d≤40 | 40< d ≤63 | 63< d ≤100 | 100< d ≤120 |
| Q355M | All | 470-630 | 450-610 | 440-600 | 430-590 |
| Elongation (%); Dia. (d) mm; (Hot rolled) | ||||||
| Sample direction | d≤40 | 40< d ≤63 | 63< d ≤100 | 100< d ≤150 | 150< d≤ 200 | 250< d ≤400 |
| Transverse | 20 | 19 | 18 | 18 | 17 | 17 |
| Vertical | 22 | 21 | 20 | 18 | 17 | 17 |
Q355B Product Pictures
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