S620 Steel Plate
Ultra high-strength S620 structural steel plate with excellent weldability and toughness for demanding B2B construction and engineering projects.
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Ultra High Yield Strength (≥620 MPa): Ideal for heavy-load structural and engineering applications.
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Superior Weldability: Excellent performance under common industrial welding processes.
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High Impact Resistance: Reliable at low temperatures and under dynamic stress.
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Optimized Grain Structure: Produced via quenching and tempering for uniform properties.
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Lightweight Efficiency: Enables reduced material use without compromising strength or safety.
S620 Steel Plate Description
S620 steel plate is a high-strength structural steel produced under EN 10025-6, offering a minimum yield strength of 620 MPa.
It is part of the quench and tempered structural steel family, designed for critical load-bearing structures such as bridges, cranes, offshore platforms, and wind towers.
Thanks to its optimized carbon content and micro-alloying elements (Nb, V, Ti), S620 delivers both excellent toughness and weldability.
It’s widely used in energy, construction, and mechanical industries that demand both high strength and superior fatigue resistance.
Supplied in the Q+T (Quenched and Tempered) condition, S620 ensures consistent mechanical properties and dimensional stability, even for thick plates.
S620 Steel Plate Technical Data Sheet
| S620 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 | 1 | 2 | 0.7 | 0.06 | 0.14 | 0.04 |
| S620 Mechanical Properties | ||
| Property | Unit | Typical Value |
| Standard | — | EN 10025-6 |
| Grade | — | S620 |
| Yield Strength (min) | MPa | 620 |
| Tensile Strength | MPa | 700 – 900 |
| Elongation (A5) | % | ≥ 14 |
| Impact Energy (Charpy V-notch, −40 °C) | J | ≥ 27 |
| Delivery Condition | — | Q + T (Quenched and Tempered) |
| Thickness Range | mm | 6 – 150 |
S620 Steel Applications
S620 structural steel plates are designed for high-stress, safety-critical applications requiring exceptional strength, fatigue resistance, and reliability.
Common applications include:
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Bridges and offshore platforms
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Cranes and heavy lifting equipment
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High-rise buildings and industrial structures
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Pressure vessels and energy equipment
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Wind turbine towers and structural supports
