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Overview of ASTM A572 Grade 50 H-Beam
ASTM A572 Grade 50 H-beams are made from high-strength, low-alloy niobium-vanadium steel with a minimum yield strength of 345 MPa (50 ksi) and tensile strength ranging from 450–600 MPa. The elongation is ≥18%, making these beams suitable for heavy-duty structures such as high-rise building core tubes and large factory building beams.
ASTM A572 Grade 50 H beams
The carbon content is ≤0.23%, with added niobium (0.005–0.05%) and vanadium (0.01–0.15%) to improve welding performance through fine grain strengthening (CEIIW ≤0.45%). Hot-rolled beams optimize the flange-to-web thickness ratio for high strength and lightweight design.
The controlled rolling process refines the grain to ASTM grade 8, and the impact energy at -20°C is ≥27J, ensuring suitability for cold-region projects. ASTM A572 Grade 50 H-beams comply with A572/A572M-18 and are comparable to the national standard Q355D.
Mechanical Properties of ASTM A572 Grade 50 H-Beam
| Specification | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Moment of Inertia (Iₓ, in⁴) |
|---|---|---|---|---|
| W16×36 | 345 | 450–600 | ≥18 | 448 |
Remark: The optimized flange-to-web ratio makes the section more than 20% lighter than ordinary carbon steel, ideal for large-span lightweight structures.
Applications of ASTM A572 Grade 50 H-Beam
ASTM A572 Grade 50 H-beams are widely used in high-rise building core tubes, providing strong and durable structural support.
They are also applied in large factory building beams and industrial steel structures, offering high strength and excellent weldability for load-bearing applications.
Export steel structures, mining machinery frames, and bridge main beams benefit from A572 Grade 50 H-beams. Their phosphorus and sulfur contents (≤0.04% and 0.05%) support flame cutting and submerged arc welding, improving processing efficiency by 30%.
Advantages of ASTM A572 Grade 50 Steel
- High-strength low-alloy composition for heavy-duty applications
- Excellent weldability and fine grain strengthening
- Optimized flange-to-web ratio for lightweight, large-span structures
- Suitable for cold-region projects with impact energy ≥27J
For reliable ASTM A572 Grade 50 H-beams, GNEE provides high-strength, low-alloy structural steel with full certification and global delivery. Contact us for the latest ASTM A572 Grade 50 H-beam price list to ensure your project uses premium structural steel.
Contact us for the latest ASTM A572 Grade 50 H-beam price list
What is astm A572 grade 50 steel?
A572 Grade 50 steel plate is a HSLA steel that is considered a workhorse grade of steel. Because of its strength, less material is needed to meet application requirements than with other grades of steel.
Is A572 stronger than A36?
The higher presence of strengthening alloys, such as manganese and silicon, in A572 plate grades give the material greater strength as compared to A36. This higher strength allows A572 steel to bear more weight and withstand greater forces without breaking or failing, which is crucial in structural applications.
Is A572 steel corrosion resistant?
A572 steel is typically used in structural applications due to its high strength, ductility, weldability and corrosion resistance.
What is equivalent to astm A572 Grade 50 material?
Which steel grades equivalent to astm a572 grade 50 ? Xinsteel Industrial suggest you using steel grades EN 10025-2 S355JR,DIN 17100 St50-2,GB/T 1591 Q345B or Q355B. These steel materials are all low alloy high strength for structural buildings.
What is the difference between astm A572 Grade 50 and s355?
ASTM A572 Grade 50 is commonly used in heavier construction applications requiring higher strength, while S355JR is versatile and widely used in various structural applications across Europe.