Looking for a reliable A572 Gr 50 H steel beams manufacturer for structural and engineering projects? You are in the right place.
As a professional steel structure manufacturer with long-term export experience, we supply ASTM A572 Grade 50 H steel beams directly from mill production, ensuring stable quality, consistent tolerances, and competitive factory pricing.
A572 Gr 50 H steel beams
Our A572 Gr 50 H steel beams are widely used in bridges, buildings, and heavy machinery where higher strength per unit weight is required.
What Is A572 Gr 50 H Steel Beams?
A572 Gr 50 H steel beams are produced from ASTM A572 Grade 50 high-strength low-alloy (HSLA) structural steel.
This grade offers a minimum yield strength of 50 ksi (345 MPa) and a minimum tensile strength of 65 ksi (450 MPa), providing better mechanical performance than conventional ASTM A36 steel.
ASTM A572 includes five yield grades:
Grade 42
Grade 50 (most widely used)
Grade 55
Grade 60
Grade 65
Among them, A572 Gr 50 H steel beams are the most common choice for structural shapes due to their excellent balance of strength, weldability, and cost efficiency.
Chemical Composition of A572 Gr 50 H Steel Beams
The chemical composition of A572 Gr 50 H steel beams is carefully controlled through heat analysis to achieve fine grain structure and improved notch toughness.
Chemical Composition (Heat Analysis, %)
| Grade | C ≤ | Mn ≤ | P ≤ | S ≤ | Si |
|---|---|---|---|---|---|
| A572 Gr 50 | 0.23 | 1.35 | 0.04 | 0.05 | ≤ 0.40 |
Micro-alloying elements such as niobium (Nb), vanadium (V), and titanium (Ti) may be added to further enhance strength and toughness without sacrificing weldability.
Mechanical Properties of A572 Gr 50 H Steel Beams
Mechanical Properties (ASTM A572)
| Grade | Yield Strength ≥ | Tensile Strength ≥ | Elongation ≥ (200 mm) | Elongation ≥ (50 mm) |
|---|---|---|---|---|
| Gr 50 | 345 MPa (50 ksi) | 450 MPa (65 ksi) | 18% | 21% |
These properties make A572 Gr 50 H steel beams suitable for riveted, bolted, or welded structural applications under dynamic and static loads.
Physical Properties of A572 Gr 50 H Steel Beams
| Property | Value |
|---|---|
| Density | 7.83 g/cm³ |
| Elastic Modulus | 207 GPa |
| Shear Modulus | 80 GPa |
| Bulk Modulus | 160 GPa |
| Poisson's Ratio | 0.30 |
Stable physical properties ensure predictable structural behavior during design and long-term service.
A572 Gr 50 H Steel Beams Equivalent Grades
A572 Gr 50 H steel beams are equivalent to multiple international standards, making them easy to substitute in global projects.
| Standard | Equivalent Grade |
|---|---|
| EN 10025-2 | S355JR |
| DIN | St 52-3 |
| JIS | SPFC590 |
| GB / China | Q345 / Q355 |
| ISO | S355 |
This equivalency allows seamless use in multinational engineering designs.
Why Choose Our A572 Gr 50 H Steel Beams
Choosing the right supplier is as important as choosing the right steel grade.
Our advantages include:
- Direct factory production of A572 Gr 50 H steel beams
- Stable mechanical performance and tight tolerances
- Full Mill Test Certificate (EN 10204 3.1)
- Support for third-party inspection
- Rich export experience for structural steel projects
With excellent mechanical properties, good weldability, and global standard equivalence, A572 Gr 50 H steel beams are an ideal solution for modern structural engineering.
As a professional manufacturer, we provide reliable quality and competitive pricing to support your projects worldwide.
Contact us for the latest A572 Gr 50 H steel beams price list and technical data.
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.