ASTM A572 grade 50 wide flange construction H beam steel

ASTM A572 grade 50 wide flange H beam adopts niobium vanadium microalloying design, with a yield strength of ≥ 345MPa and a carbon equivalent controlled within the range of 0.38-0.45%, combining high strength and excellent weldability. The flange width of typical specifications such as W18 × 66 reaches 289.6mm, the web thickness is 10.2mm, and the section moment of inertia is significantly better than that of ordinary I-beams, making it particularly suitable for large-span building beam column systems.

A572 grade 50 wide flange construction H beam steel is widely used in the lateral force resistance system of super high-rise buildings and the main frame of heavy industrial plants due to its excellent seismic performance (0 ℃ impact energy ≥ 54J) and dimensional stability (torsion ≤ 1mm/m). During procurement, it is necessary to focus on verifying the flange flatness tolerance (± 2mm) and Z-direction performance certification in ASTM A6/A6M standards.