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h shape steel beam W21x201 A36/A572GR50/A992
Material property comparison
| Material | Chemical composition characteristics | Yield strength (MPa) | Tensile strength (MPa) | Elongation (%) | Low temperature impact energy (-40℃, J) |
|---|---|---|---|---|---|
| A36 h section beam | Low carbon steel (C≤0.28%), containing 0.80-1.20% manganese, no alloy elements, excellent welding performance | ≥250 | 400-550 | ≥20 | ≥27 |
| A572GR50 h beam structure | High-strength low-alloy steel (C≤0.23%), containing niobium (Nb) 0.015-0.05%, vanadium (V) 0.01-0.05%, grain refinement | ≥345 | 450-550 | ≥18 | ≥27 |
| A992 h shaped beam | High manganese content (Mn ≥ 1.35%), optimized tensile and fatigue resistance, suitable for dynamic loads in buildings | 345-450 | 470-630 | ≥18 | ≥27 |
W21x201 beam steel general specifications
Nominal height: 21 inches (533mm)
Flange width: about 8.25 inches (210mm)
Web thickness: ≥25mm, flange thickness: ≥40mm
Theoretical weight: about 201 pounds/foot (299.3kg/m)
Section modulus (Sx): ≥4800cm³ (A992 material can reach 5200cm³)
Steel H Column Performance and Application Scenarios
A36 h beam material: Highly economical, suitable for conventional static loads, general corrosion resistance (surface coating required); used in industrial plant main beams and general equipment brackets.
A572GR50 structural steel h beam material: High strength and light weight (15% lighter than A36), 30% higher resistance to salt spray corrosion; used in cross-sea bridge main beams and port crane track beams.
A992 structural h beam material: Outstanding fatigue resistance (cyclic load life is 20% higher than A572GR50), excellent seismic performance; used in super high-rise building core tubes and space launch platform support frames.
