wide flange w18x55 w18x65 A572GR50 structural steel h beam
A572Gr50 metal h beam is a high-strength low-alloy structural steel that meets ASTM A572/A572M standards. It is suitable for scenes with high strength requirements such as high-rise buildings, bridges, and mechanical equipment. It has higher strength and better corrosion resistance than A36 material.
W18x55 h beam wide flange specifications and performance
Cross-section dimensions
Height (H): 18 inches (about 457.2 mm)
Web thickness (tw): 0.375 inches (about 9.525 mm)
Flange thickness (tf): 0.375 inches (about 9.525 mm)
Flange width (bf): 7 inches (about 177.8 mm)
Weight: about 55 pounds/foot (about 82.5 kg/m)
Performance
Yield strength: 345 MPa
Tensile strength: 450-620 MPa
Elongation: 18%
Application: Commonly used in medium-loaded building structures, such as beams and columns.
W18x65 w flange beam Specifications and Performance
Cross-sectional dimensions
Height (H): 18 inches (about 457.2 mm)
Web thickness (tw): 0.375 inches (about 9.525 mm)
Flange thickness (tf): 0.375 inches (about 9.525 mm)
Flange width (bf): 8 inches (about 203.2 mm)
Weight: about 65 pounds/foot (about 97.5 kg/m)
Performance
Yield strength: 345 MPa
Tensile strength: 450-620 MPa
Elongation: 18%
Use: Commonly used in building structures with higher loads, such as bridges, support beams of high-rise buildings, etc.
A572Gr50 and A36 material comparison
| parameter | A572Gr50 | A36 |
|---|---|---|
| Yield Strength | 345 MPa | 250 MPa |
| tensile strength | 450-620 MPa | 400-550 MPa |
| Elongation | 18% | 20% |
| Chemical composition | Contains alloy elements such as niobium and vanadium | High carbon content |
| Corrosion resistance | Better | generally |
| Application Scenario | High-rise buildings, bridges, etc. | General construction, mechanical equipment |
h beam structure Material selection and precautions
If the project has high requirements for strength and corrosion resistance, A572Gr50 material is recommended.
If the project budget is limited and the strength requirements are not high, A36 material can be selected.
Precautions: A572Gr50 material has good welding performance, but the preheating and post-heating temperatures must be controlled during welding to avoid welding cracks. Before use, the specifications and materials of the steel section must be confirmed according to local design specifications and project requirements.
