W21x73 W21x83 W21x93 wide flange h beam
W21x73 h beam material, W21x83 h beam steel structure, and W21x93 h section steel beam all use American standard ASTM standard steel. Common materials include A36 (yield strength ≥ 250MPa), A572GR50 (yield strength ≥ 345MPa) and A992 (tensile strength 470-630MPa), which can improve fatigue resistance.
| model | Height (inches/mm) | Wing width (inch/mm) | Belly thickness (mm) | Wing thickness (mm) | Theoretical weight (kg/m) | Section modulus Sx (cm³) |
|---|---|---|---|---|---|---|
| W21x73 | 21/533 | ~8.25/210 | ≥12 | ≥20 | 108.6 | ~1800 |
| W21x83 | 21/533 | 8.25/210 | 13.1 | 21.2 | 123.5 | ~2200 |
| W21x93 | 21/533 | ~8.25/210 | ≥15 | ≥25 | 138.4 | ~2600 |
Mechanical properties of W21x73 h type beam, W21x83 h type steel beam, and W21x93 material h beam
Bending ability: The section modulus of W21x93 (Sx≈2600cm³) is 44% higher than that of W21x73, and is suitable for ultra-heavy load structures.
Impact resistance: Low temperature toughness (-40℃ impact energy ≥27J) and elongation (≥20%) meet the high dynamic load requirements of bridges, port machinery, etc..
Corrosion resistance: W21x93 refines the grains through the normalizing process (580-620℃), and its salt spray corrosion resistance is increased by 30%.
Processing adaptability: Supports CNC forming and welding (E70/E80 welding rods are recommended), and the rounded corner transition design of W21x83 reduces the risk of cold cracks in welding.
Application areas of W21x73 h beam profile, W21x83 h profile steel, and W21x93 steel beam h
W21x73 h-shaped beam: medium-sized factory trusses, railway bridge beams, focusing on economy and construction efficiency.
W21x83 h-shaped iron beam: heavy-duty industrial equipment brackets, cross-sea bridge main beams, optimized cross-section design to enhance fatigue resistance.
W21x93 h-shaped steel beam: super-high-rise building core tubes, aerospace facility support frames, wide flange design to disperse lateral pressure.
