S550 Steel Plate
High-strength S550 structural steel plate for demanding engineering and construction projects. Ideal for B2B industrial applications.
-
Exceptional Yield Strength (≥550 MPa): Provides superior load-bearing capacity.
-
Excellent Weldability: Suitable for conventional welding processes.
-
High Toughness: Performs reliably under dynamic or low-temperature conditions.
-
Uniform Mechanical Properties: Ensures consistency across plates and thicknesses.
-
Ideal for Heavy Structures: Perfect for bridges, cranes, offshore and industrial machinery.
S550 Steel Plate Description
S550 structural steel plate is a high-strength, low-alloy steel designed according to the EN 10025-6 standard. With a minimum yield strength of 550 MPa, it offers higher mechanical performance than conventional grades such as S355 or S500.
This steel grade provides a perfect balance between strength, weldability, and toughness, making it suitable for large-scale infrastructure projects like bridges, high-rise buildings, cranes, offshore platforms, and energy equipment.
Thanks to its thermo-mechanically rolled or quenched and tempered condition, S550 guarantees excellent structural reliability, reduced weight, and improved load-bearing efficiency.
S550 Steel Plate Technical Data Sheet
| S550 Chemical Composition | |||||||||||
| Element | C (max) | Si (max) | Mn (max) | P (max) | S (max) | Cr (max) | Ni (max) | Mo (max) | Nb (max) | V (max) | Ti (max) |
| Content | 0.2 | 0.5 | 1.7 | 0.025 | 0.01 | 0.5 | 0.5 | 0.5 | 0.06 | 0.14 | 0.04 |
| S550 Mechanical Properties | ||
| Property | Unit | Typical Value |
| Standard | — | EN 10025-6 |
| Grade | — | S550 |
| Yield Strength (min) | MPa | 550 |
| Tensile Strength | MPa | 620 – 780 |
| Elongation (A5) | % | ≥ 16 |
| Impact Energy (Charpy V-notch, −40 °C) | J | ≥ 27 |
| Delivery Condition | — | Q + T (Quenched and Tempered) |
| Thickness Range | mm | 6 – 150 |
S550 Steel Applications
S550 steel plates are widely used in high-performance structural and industrial projects requiring both strength and reliability.
Typical applications include:
-
Bridge and offshore platform construction
-
High-rise and industrial buildings
-
Cranes and lifting equipment
-
Wind turbine towers and supports
-
Mining, pressure vessels, and construction machinery
