W12 x 72 structural steel wide-flange section

W12x72 steel beam h indicates that the nominal height of the steel is 12 inches (304.8mm) and the unit length weight is 72 pounds per foot (about 107kg/m).

Height (H): 311mm
Width (B): 306mm
Web thickness (tw): 10.9mm
Flange thickness (tf): 17mm

Common materials include A36 (low carbon steel), A572 GR50 (high strength low alloy steel) and A992 (special steel for building structures), all of which comply with the American standard ASTM A6/A6M-12112.

Tensile strength: A992 material ≥450MPa, A572 GR50 ≥448MPa.
Yield strength: A992 material ≥345MPa, A572 GR50 ≥345MPa.
Elongation: ≥18% (toughness guaranteed).

Engineering advantages
High load-bearing efficiency: large section modulus, saving 10-15% of metal compared to ordinary I-beams under the same load.
Seismic performance: H-shaped steel structure has good plasticity and is less damaged in earthquakes, making it suitable for earthquake-prone areas.
Space utilization: Compared with concrete structures, it can increase the effective use area of ​​buildings by 4-6%.
Convenient construction: standardized hot rolling process, supporting fast cutting, welding and installation.

Application scenarios
Construction field: high-rise building frame columns, large-span beams, truss supports.
Bridge engineering: main beam and pier support structure.
Industrial equipment: heavy machinery base, factory steel structure platform.