Looking for reliable A572 Gr 50 H steel beams manufacturers in China? You are in the right place. A572 Gr 50 H steel beams are high-strength low-alloy structural beams designed for bridges, buildings, and heavy-load frameworks.
A572 Gr 50 H steel beams
As a professional steel beam manufacturer and exporter, we supply ASTM A572 Grade 50 H beams directly from the mill with stable quality, competitive pricing, and fast delivery for global projects.
In this article, we will introduce the properties, applications, equivalent grades, mechanical performance, and size range of A572 Gr 50 H steel beams, helping you choose the right structural solution for your project.
What Are A572 Gr 50 H Steel Beams?
ASTM A572 Grade 50 is a low-alloy columbium-vanadium structural steel with a minimum yield strength of 50 ksi (345 MPa). The H-beam section offers superior load-bearing capacity and structural stability, making A572 Gr 50 H steel beams ideal for riveted, bolted, or welded construction.
Compared with conventional carbon steel beams, A572 Gr 50 H beams provide:
Higher strength-to-weight ratio
Better toughness and weldability
Reduced overall structural weight
Improved performance in large-span structures
These advantages make them widely used in modern infrastructure projects.
Applications of A572 Gr 50 H Steel Beams
A572 Gr 50 H steel beams are commonly used in demanding structural environments where extra strength is required, including:
Bridge construction: girders, piers, and supporting frames
Building structures: high-rise buildings and industrial plants
Construction equipment: heavy machinery frames
Transportation: freight cars, truck chassis, and trailer frames
Energy & utilities: transmission towers and substation structures
Thanks to their high yield strength, these beams allow engineers to reduce material thickness while maintaining structural safety, effectively lowering total project costs.
A572 Gr 50 H Steel Beams Chemical Composition
| Element | Content (%) |
|---|---|
| Carbon (C) | ≤ 0.23 |
| Manganese (Mn) | 0.60 – 1.35 |
| Phosphorus (P) | ≤ 0.04 |
| Sulfur (S) | ≤ 0.05 |
| Silicon (Si) | ≤ 0.40 |
| Columbium (Nb) | ≤ 0.05 |
| Vanadium (V) | ≤ 0.08 |
The controlled addition of niobium and vanadium enhances grain refinement, improving both strength and toughness of A572 Gr 50 H steel beams.
Mechanical Properties of A572 Gr 50 H Steel Beams
| Property | Value |
|---|---|
| Yield Strength | ≥ 345 MPa (50 ksi) |
| Tensile Strength | 450 – 620 MPa |
| Elongation | ≥ 18% |
| Impact Performance | Good at ambient temperature |
These mechanical properties make A572 Gr 50 H steel beams suitable for dynamic load-bearing structures such as bridges and heavy industrial frameworks.
A572 Gr 50 H Steel Beams Size Range
We supply A572 Gr 50 H steel beams in a wide range of dimensions to meet different structural requirements:
Beam height: 100 mm – 900 mm
Flange width: 100 mm – 400 mm
Web thickness: 6 mm – 40 mm
Flange thickness: 8 mm – 50 mm
Length: 6 m, 9 m, 12 m or customized
Custom cutting, drilling, and surface treatment are available upon request.
A572 Gr 50 H Steel Beams Equivalent Grades
ASTM A572 Grade 50 H beams have multiple international equivalents, making them easy to substitute in global projects:
JIS: SS490, SM490A
EN: S355JR, ST52-3
China: Q355B, Q345B
DIN: E36-2
UNI: FE510B
Our technical team can assist with cross-standard selection and certification.
Why Choose Our A572 Gr 50 H Steel Beams
- Direct supply from certified steel mills
- Stable quality meeting ASTM standards
- Competitive factory pricing for bulk orders
- Full documentation (MTC EN 10204 3.1)
- Global export experience for structural projects
A572 Gr 50 H steel beams are an excellent choice for bridges, buildings, and heavy structural applications where strength, reliability, and cost efficiency are critical.
With superior mechanical performance and broad international equivalency, they are widely accepted in global construction projects.
If you are sourcing high-quality A572 Gr 50 H steel beams, our team is ready to support your project with professional advice and fast quotations.
Contact us for the latest A572 Gr 50 H steel beams price list and technical datasheet.
Application
What is ASTM A572 GR 50 standard?
ASTM A572 GR 50 is a high strength low alloy steel. Grade 50 is difficult to form since it contains more alloying elements than plain steel but offers more strength per unit of weight. Owing to its high strength ASTM A572 Grade 50 Plates requires less material to satisfy strength requirements than plain carbon steel.
What is the difference between A36 and A572 Gr50?
A572 Gr50 has a higher minimum requirement, ensuring more consistent high-end performance. A36 is cheaper per pound, but A572 Gr50's strength may mean you need less material, potentially reducing overall project cost. Both are easily welded, but A36 is slightly more forgiving for general fabrication
What is the difference between 4140 and A572 grade 50 steel?
A572 is a hot-rolled carbon steel that is used where a high strength to weight ratio is desired. A grade such as AISI 4140 offers decent corrosion resistance due to higher chromium and molybdenum content and is commonly used in firearm parts, pressurized gas tubes, and structural tubing for roll cages
Can you weld A36 to A572?
Weldability of the two steels is the same. Welds on the two steels (A36 and A36/A572 Gr 50 dual grade) using identical electrodes nuxcs and weld- ing parameters produced acceptable, ~quivalent welded JOints.
What is the ultimate strength of A572 grade 50 steel?
ANSWER: ASTM 572 Grade 50 steel has an ultimate tensile strength of 450 MPa (metric) and 65,300 PSI (Imperial). It has a tensile yield strength of 345 MPa and 50,000 PSI.