Address:Zhengzhou city in China.
Phone:0086-371-86151827
Email:
The ASTM equivalent of Q345B is A572 gr.50. This is a steel plate that is used in the construction of large structures like bridges.
ASTM A572-50 is a high strength low-alloy columbium-vanadium structural steel. This specification provides for a 50ksi minimum yield strength and 65ksi minimum tensile strength. Theses grades are intended for riveted, bolted, or welded structures primarily in applications where extra strength or reduced end product weight is desired without foregoing strength.
Comparison chart between Q345 Gr B vs A572 Gr 50:
| Grade | CHEMICAL COMPOSITION (%) | TENSION TEST | IMPACT TEST | ||||||
| C | Si | Mn | S | P | Tensile Strength (Mpa) | Yield Point (Mpa) | Elongation | AKV/J UNDER NORMAL TEMPERATURE | |
| Q345B | 0.23 MAX | 0.55 MAX | 1.0-1.6 | 0.04 MAX | 0.04 MAX | 470-630 | 345 MIN | 21 MIN | 34 MIN |
| A572-50 | 0.23 MAX | 0.40 MAX | 1.35 MAX | 0.05 MAX | 0.04 MAX | [65ksi]450 MIN | [50ksi] 345 MIN | 21 MIN | / |
Application Potential:
The steel plate of Q345 is applied to manufacture factory building, civil building and all kinds of engineering machinery in mine industry and various of civil construction, such as drilling rig, electric shovel, powered wheel tipper, mining vehicles, excavators, loaders, bulldozers, industrial blowers, various types of cranes, mining machinery and equipment, such as hydraulic support and other structural parts.
Address: Zhengzhou city in China.
Phone: 0086-371-86151827
Email: 
