Description
Technical Parameters
w18x35 w18x40 w18x45 w18x46 steel wide flange beam
Section parameters and theoretical weight
| model | Weight (lbs/ft/kg/m) | Section Height (inches/mm) | Flange Width (inches/mm) | Web Thickness (inches/mm) |
|---|---|---|---|---|
| W18x35 w shape beam | 35 / 52.1 | 18 / 457 | 6.0 / 152 | 0.30 / 7.6 |
| W18x40 w flange beam | 40 / 59.5 | 18 / 457 | 7.0 / 178 | 0.35 / 8.9 |
| W18x45 h type beam | 45 / 67.1 | 18 / 457 | 7.5 / 191 | 0.43 / 10.9 |
| W18x46 h section beam | 46 / 68.5 | 18 / 457 | 11.2 / 285 | 0.43 / 10.9 |
Material and performance comparison
| Material grade | Yield Strength | tensile strength | Applicable scenarios |
|---|---|---|---|
| A36 | ≥36ksi (250MPa) | 58-80ksi | Ordinary building frame, non-load-bearing structure |
| A572 GR50 | ≥50ksi (345MPa) | ≥65ksi | Bridges, high-load industrial plants |
| A992 | ≥50-65ksi | ≥65ksi | Earthquake-resistant core components of high-rise buildings |
w flange beam application
Construction engineering: frame beams and columns of high-rise buildings (W18x46 h beam wide flange is suitable for spans > 15m due to its high bending stiffness); heavy crane beams in industrial plants (A572 GR50 material is recommended).
Bridge engineering: main beams and transverse supports (W18x45/W18x46 h section steel meets ASTM A709 standards).
Machinery manufacturing: heavy equipment brackets (W18x35/W18x40 h section beam lightweight design reduces installation costs).
Comparison with domestic and foreign standards
| American Standard Model | Similar to national standard model | Differences |
|---|---|---|
| W18x35 steel h beam | HN450×200×9×14 | The national standard flange is narrower and 8%-10% lighter |
| W18x46 h type steel beam | HW400×400×13×21 | The national standard cross section is wider and the torsion resistance is better |
