High-Strength Low-Alloy Structural Carbon Steel (HSLA)
BMG offers a wide range of steel plate, including carbon steel (also known as mild steel) and High-Strength Low-Alloy (HSLA) steel.
A283 Structural Steel Plate
A283 steel is a low-carbon structural steel primarily used in applications that require good weldability and formability. It is widely used for the manufacture of metal structures, machinery components, and low-to-medium strength pressure vessels.
A283 steel is a low-carbon steel, which provides excellent weldability, formability, and good toughness. It is classified into several grades (A283 Grade A, B, C, and D) and is suitable for applications that require moderate strength compared to other structural steels. It is commonly used in the construction of metal structures and components in the construction industry, as well as for storing liquids and gases at low pressure.
- Good weldability and formability.
- Adequate strength for low-to-medium strength applications.
- Relatively low cost compared to other structural steels.
- Suitable for a wide range of applications, especially in construction and the manufacture of machinery components.
- Construction industry: manufacture of metal structures and bridges.
- Pressure vessel industry: tanks, pipes, and other components that do not require high pressure strength.
- Shipbuilding and railway: structural components for ships, railcars, and trains.
- Automotive industry: parts that do not require high tensile strength.
Component | A283 Grade A | A283 Grade B | A283 Grade C | A283 Grade D |
Carbon (C) | 0.25% | 0.26% | 0.28% | 0.26% |
Manganese (Mn) | 0.60 - 0.90% | 0.60 - 0.90% | 0.60 - 0.90% | 0.60 - 0.90% |
Silicon (Si) | 0.13% | 0.13% | 0.13% | 0.13% |
Phosphorus (P) | Max. 0.035% | Max. 0.035% | Max. 0.035% | Max. 0.035% |
Sulfur (S) | Max. 0.035% | Max. 0.035% | Max. 0.035% | Max. 0.035% |
Other elements | Low-alloy | Low-alloy | Low-alloy | Low-alloy |
Property | A283 Grade A | A283 Grade B | A283 Grade C | A283 Grade D |
Tensile strength (TS) | 415 - 550 MPa | 415 - 550 MPa | 485 - 620 MPa | 485 - 620 MPa |
Yield strength (YS) | 205 MPa min. | 205 MPa min. | 205 MPa min. | 205 MPa min. |
Elongation | 23% in 200 mm | 23% in 200 mm | 20% in 200 mm | 20% in 200 mm |
Brinell hardness (BHN) | 120 - 180 | 120 - 180 | 140 - 190 | 140 - 190 |
Low-temperature toughness | Adequate | Adequate | Adequate | Adequate |
Plate thickness | Plate length | Plate width |
3/16" to 4" | Up to 12 m | Up to 3 m |
Customized to customer needs | Per customer specifications | Per customer specifications |
A283 Grade | International equivalents |
A283 Grade A | EN 10025 S235JR |
A283 Grade B | EN 10025 S235JR |
A283 Grade C | EN 10025 S275JR |
A283 Grade D | EN 10025 S275JR |
A283 steel is a low-carbon alloy ideal for applications that require good weldability and formability without the need for high mechanical strength. Its versatility makes it a suitable material for the construction of metal structures, machinery components, and low-to-medium strength pressure vessels. It is an economical option for projects that do not demand extreme strength properties but do require durability and ease of fabrication.