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W Shapes w12x72 w12x79 American wide flange beams
Wide Flange H Beam Material and Performance
Core Material: Both use A572GR50 or A992 material h beam, yield strength ≥345MPa, tensile strength ≥450-630MPa; elongation ≥18% (A572GR50) or ≥21% (A992), meeting ASTM A6/A6M toughness standards.
Process Characteristics
Weldability: Preheating to 120-150℃ (plate thickness ＞25mm), low-hydrogen welding rods are recommended to reduce the risk of cold cracks.
Corrosion Resistance: No coating is required under normal conditions, and A588 weathering steel or galvanizing is recommended for marine/chemical scenes.
W12 Wide Flange H-Beam Series Part Models
Engineering application fields
| Scenario | W12x72 w flange beam | W12x79 w shape beam |
|---|---|---|
| Super high-rise building |
Core tube outer frame steel column (supporting 300m+ building load) |
Large span cantilever structure main beam (span > 50m) |
| Heavy industrial facilities | 200-ton overhead crane track beam for steel mill | Heavy reactor support platform for petrochemical plants |
| Bridge Engineering | Double deck cross beam of road-rail dual-purpose bridge |
Prestressed anchor steel structure in anchorage area of suspension bridge |
| Marine Engineering | Need to be used with epoxy zinc-rich coating |
Offshore platform pile foundation support structure (requires salt spray resistance treatment) |
Selection suggestions
| Demand Scenario | Recommended Models | Advantages |
|---|---|---|
| High dynamic loads (harbour cranes) | W12x79 h beam wide flange | Higher tensile strength and excellent fatigue resistance |
| Conventional industrial plant main beam | W12x72 w wide flange beam | Strong economical performance and low basic cost |
| Extremely corrosive environment | Both require coating | A588 material is preferred as an alternative |
