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.
A633 STEEL PLATE
ASTM A633 steel is a high-strength, low-carbon structural steel designed for applications that require high toughness at low temperatures. It is commonly used where strength and durability are needed under extreme conditions, such as large-scale structures exposed to cold climates.
ASTM A633 steel is a high-strength alloy steel with low susceptibility to brittle fracture under low-temperature conditions. This material is designed to withstand low temperatures without losing its mechanical properties, which makes it an ideal option for manufacturing components for steel structures that operate in cold climates or extreme environments. ASTM A633 steel is offered in several grades, depending on the specific strength and toughness requirements.
- Excellent tensile strength and high toughness at low temperatures.
- Good resistance to fracture under extreme temperature conditions.
- High resistance to deformation and impact.
- Suitable for applications that require low-temperature performance.
- Good weldability and ease of forming.
- Energy industry: Construction of offshore platforms, boilers, and components exposed to extreme temperatures.
- Shipbuilding industry: Fabrication of ship structures and components for vessels operating in cold environments.
- Automotive industry: Vehicle components that operate in cold climates and extreme conditions.
- Construction industry: Structures and building components in low-temperature regions.
- Heavy machinery industries: Equipment and machinery subjected to operating conditions in cold environments.
Component | A633 Grade A | A633 Grade C | A633 Grade E |
Carbon (C) | 0.20 - 0.26 | 0.20 - 0.26 | 0.20 - 0.26 |
Manganese (Mn) | 1.00 - 1.60 | 1.00 - 1.60 | 1.00 - 1.60 |
Phosphorus (P) | <= 0.035 | <= 0.035 | <= 0.035 |
Sulfur (S) | <= 0.035 | <= 0.035 | <= 0.035 |
Silicon (Si) | 0.15 - 0.40 | 0.15 - 0.40 | 0.15 - 0.40 |
Nickel (Ni) | <= 0.50 | <= 0.50 | <= 0.50 |
Chromium (Cr) | <= 0.25 | <= 0.25 | <= 0.25 |
Molybdenum (Mo) | <= 0.12 | <= 0.12 | <= 0.12 |
Property | A633 Grade A | A633 Grade C | A633 Grade E |
Tensile strength | 70 ksi [485 MPa] | 70 ksi [485 MPa] | 70 ksi [485 MPa] |
Yield strength (min.) | 50 ksi [345 MPa] | 50 ksi [345 MPa] | 50 ksi [345 MPa] |
Elongation (in 8 in. [200 mm], min.) | 20% | 20% | 20% |
Brinell hardness (max.) | 187 HBW | 187 HBW | 187 HBW |
Impact toughness (min.) | 20 ft-lb [27 J] at -40°F [-40°C] | 20 ft-lb [27 J] at -40°F [-40°C] | 20 ft-lb [27 J] at -40°F [-40°C] |
Thickness (mm) | Width (mm) | Length (mm) |
6.0 - 100 | 1000 - 2500 | 2500 - 12000 |
6.0 - 80 | 1000 - 3000 | 3000 - 12000 |
ASTM A633 | Equivalent Grades |
A633 Grade A | EN 10025 S355J2 |
A633 Grade C | EN 10025 S355J2G3 |
A633 Grade E | EN 10025 S355J2G3 |
ASTM A633 steel is ideal for applications in cold environments or where high toughness at low temperatures is required. Its strength, weldability, and resistance to fracture make it an excellent option for structural and machinery applications operating under extreme conditions. With multiple grades available, A633 steel can be adapted to different needs based on each industry’s specific requirements, providing durable and reliable solutions for critical applications.