S355J2 Special Steel
What Sets S355J2 Apart?
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High Yield Strength – With a minimum yield of 355 MPa, S355J2 is well-suited to structural frameworks, load-bearing applications, and heavy engineering tasks.
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Impact Tested at -20°C – The ‘J2’ designation confirms that this steel has passed Charpy V-notch impact tests at -20°C, making it an excellent choice for outdoor and cold-weather structures.
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Good Weldability – Thanks to its low carbon content, S355J2 offers reliable weld performance without the need for extensive pre- or post-heat treatment.
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Versatile Fabrication – This material is easily cut, drilled, machined, and formed, making it ideal for a wide range of fabrication tasks.
Applications and End Uses
S355J2 is an incredibly versatile structural steel, frequently used in:
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Construction and Civil Engineering – Frames, beams, bridges, and structural supports.
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Machinery and Equipment – Bases, housings, and fabricated mechanical assemblies.
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Transport and Infrastructure – Truck chassis, trailers, support structures, and vehicle bodies.
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Offshore and Marine Projects – Structural elements requiring high toughness and cold temperature performance.
Its combination of strength and toughness makes it a trusted choice for both long-term installations and dynamically loaded components.
Available Forms and Sizes
At Midland Special Steels, we can supply S355J2 in a variety of profiles, including:
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Hot Rolled Flats
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Plates and Sheets
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Rounds and Squares
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Structural Sections
Standard and cut-to-length options are available, and our team can advise on machining tolerances and specific finishes where required.
Typical Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength | ≥ 355 MPa |
| Tensile Strength | 470–630 MPa |
| Elongation | ≥ 20% |
| Charpy Impact Value | ≥ 27J at -20°C |
| Hardness (approx.) | 146–187 HB |
Please note: actual values may vary depending on the form and rolling condition.
Chemical Composition (Typical, %)
| Element | Content |
|---|---|
| Carbon (C) | ≤ 0.20 |
| Manganese (Mn) | 1.00–1.60 |
| Phosphorus (P) | ≤ 0.035 |
| Sulphur (S) | ≤ 0.035 |
| Silicon (Si) | ≤ 0.55 |
Certifications and Traceability
All S355J2 supplied by Midland Special Steels is fully certified and traceable to its mill source, with EN 10204 3.1 certification provided on request. You can rely on us for steel that meets structural steel standards and CE-marking compliance.
Ready to Support Your Next Project
Whether you’re working on a structural steel framework, fabricating bespoke components, or need reliable steel for volume manufacturing, S355J2 offers a robust, high-performance solution. Our team is here to help with material selection, sizing advice, and any technical questions you might have.
Contact Midland Special Steels today for pricing, availability, or a tailored quote.
