S355J2+N PlateEN 10025 · Manufacturer, trader & exporter, India
Also sold as EN 10025-2 S355J2+N · W.Nr 1.0577 · High-strength structural steel
S355J2+N plate is supplied hot rolled to EN 10025-2, as full mill plates or cut to your drawing for structural and pressure parts. It is a normalised high-strength structural steel, chosen for heavy structures, cranes and offshore frames. Kanak Steel & Engineering Co. manufactures, trades and exports it from Mumbai; EN 10204 3.1 or 3.2 certificates are available on request / as specified in the PO. Markets we have supplied to include Oman, UAE, Saudi Arabia, Brazil, Argentina, Spain and Chile (India is the home market).
- Stock & mill supply
- EN 10204 3.1 / 3.2
- Mill test certificates
- Export packing
Reviewed by the Kanak Steel & Engineering Co. technical team · Updated October 2026
What is S355J2+N Plate?
S355J2+N plate is a normalised high-strength structural steel supplied as plate to EN 10025-2. Buyers specify it for heavy structures, cranes and offshore frames. It is also sold as EN 10025-2 S355J2+N, W.Nr 1.0577, High-strength structural steel.
- What it is
- Normalised high-strength structural steel
- Standard
- EN 10025-2
- Thickness
- 3 mm and over as hot-rolled plate (dimensions to EN 10029)
- Density
- 7.85 g/cm³
- Supplied as
- Hot rolled · as-rolled or normalised · cut to size
- Best at
- Heavy structures, cranes and offshore frames
S355J2+N Plate Specification & Sizes
| Material standard | EN 10025-2 · — |
|---|---|
| General requirements | EN 10025-2 — dimensions, tolerances and finishes |
| Grade | S355J2+N |
| Thickness | 3 mm and over as hot-rolled plate (dimensions to EN 10029) |
| Width × length | 1000 / 1250 / 1500 / 2000 / 2500 mm × up to 6000 mm, or cut to drawing |
| Condition & finish | Hot rolled · as-rolled or normalised · shot-blasted and primed on request |
| Cutting | Cut to size — rectangles, strips, circles & rings |
| Testing | Chemical & mechanical per heat · UT to A435 / A578 · impact tests on request |
| Documents | EN 10204 3.1 · 3.2 with third-party inspection · packing list · certificate of origin |
S355J2+N Plate Cut to Size
Most S355J2+N plate leaves us as pieces, not full mill plates. Cutting from a full plate means you pay only for what you use, and each piece keeps the heat number of the plate it came from.
| Full & part plates | Full mill plates, halves and quarters |
|---|---|
| Rectangles & strips | To your list of finished sizes, or to a drawing |
| Circles & rings | Blanks for blind flanges, covers, tube sheets and nozzles |
| Machining allowance | State finished size and allowance; thermally cut edges are normally machined back |
| Traceability | Heat number transferred to every piece before cutting |
Send a cutting list or DXF; we nest pieces to reduce off-cut and quote per piece.
S355J2+N Plate Chemical Composition
Under technical review for TDS.
| Element | Current requirement |
|---|---|
| Carbon | As specified |
| Manganese | As specified |
| Silicon | As specified |
| Phosphorus | As specified |
| Sulphur | As specified |
| Copper | As specified |
Numerical specification requirements are published only after the applicable current standard edition has been verified. Governing specification to be verified: EN 10025-2 for S355J2.
S355J2+N Plate Mechanical Properties
Under technical review for TDS.
| Property | Current requirement |
|---|---|
| Yield strength | As specified |
| Tensile strength | As specified |
| Elongation | As specified |
| Charpy impact | As specified |
Numerical specification requirements are published only after the applicable current standard edition has been verified. Governing specification and condition to be verified: EN 10025-2 for S355J2 — Normalised (+N).
Density & Physical Properties
| Property | Value |
|---|---|
| Density | 7.85 g/cm³ |
| Melting range | 1420 – 1530 °C |
| Magnetic | Magnetic |
S355J2+N Equivalent Grades
S355J2+N Plate Weight Chart & Calculator
Use this to budget freight and price per piece. Weight (kg) = length (m) × width (m) × thickness (mm) × 7.85.
Example: 2000 × 1000 × 10 mm
2.0 × 1.0 × 10 × 7.85 = 157.0 kg
Total weight —
| Thickness | 2000 × 1000 plate | Per m² |
|---|---|---|
| 5 mm | 78.5 kg | 39.3 kg |
| 6 mm | 94.2 kg | 47.1 kg |
| 8 mm | 125.6 kg | 62.8 kg |
| 10 mm | 157.0 kg | 78.5 kg |
| 12 mm | 188.4 kg | 94.2 kg |
| 16 mm | 251.2 kg | 125.6 kg |
| 20 mm | 314.0 kg | 157.0 kg |
| 25 mm | 392.5 kg | 196.3 kg |
Six-digit Harmonized System heading (iron and steel, chapter 72–73). Your country adds its own digits — confirm with your customs broker. All HS codes.
S355J2+N Plate Price — What Decides It
Two quotes for "S355J2+N plate" can differ by 20% and both be fair. We quote S355J2+N plate per kg for full sizes and per piece for cut sizes. These six things move the price per kg, so you can compare offers like for like.
S355J2+N Plate Testing & Inspection
Plate goes into pressure parts and heavy sections, so it is inspected for internal soundness and flatness as well as chemistry. These tests are added to the order and reported on the certificate or as separate reports.
| Ultrasonic testing | Straight-beam UT to EN 10160 (classes S0–S3 for the body, E0–E4 for the edges) |
|---|---|
| Flatness & dimensions | Per EN 10029 (or EN 10051 for plate cut from wide strip) tables for thickness, width and length |
| Impact testing | Charpy impact test as set by the grade designation (e.g. J2 = 27 J at −20 °C; IS 2062 B0 / C sub-grades) |
| PMI | Alloy verification on each plate, or each cut piece if required |
| Third-party inspection | Witness by your inspector or agency, with an EN 10204 3.2 certificate |
UT checks the plate body along a scan grid and a band along each edge, where laminations matter most for welding.
S355J2+N Plate Applications
Plate is chosen for pressure-bearing walls, heavy sections and parts machined from solid. For linings, bellows and pressed parts, see S355J2+N sheet.
How your S355J2+N plate order runs
- 01Enquiry review — we confirm size, standard edition and documents against your MR or drawing.
- 02Heat selection & PMI — the mill certificate is checked against your order; PMI can be arranged depending on product and requirements, as specified in the PO.
- 03Processing — cutting to your sizes, with heat numbers transferred where the PO requires it.
- 04Inspection — your third-party inspector witnesses, or we share photos and test reports.
- 05Packing & dispatch — seaworthy packing from Nhava Sheva (JNPT), Mumbai, FOB or CIF, documents sent before the vessel sails.
Standards on this page
Fabricating Heavy S355J2+N Plate
Shells, heads and tube sheets mean thick sections and multi-pass welds. These are the points that decide whether S355J2+N plate keeps its corrosion resistance after fabrication; matching filler is E7018 / ER70S-6.
General guidance only; follow your approved WPS, PQR and design code.
| Preheat | Set by thickness and carbon equivalent per your WPS and code. |
|---|---|
| PWHT | Post-weld heat treatment where the code or service requires it. |
| Joint preparation | Double-V or J-prep on heavy plate to reduce weld volume. |
How to Order S355J2+N Plate: RFQ Checklist
Get an accurate quote the first time. Copy this list into your enquiry:
- Standard and edition — e.g. EN 10025-2-latest
- Thickness × width × length, and number of pieces
- Full plates or cut pieces (attach drawing)
- Certificate type — 3.1 or 3.2, and the inspection agency
- Extra tests — UT, intergranular corrosion
- Delivery port, Incoterm and required date
S355J2+N plate — questions buyers ask
Is S355J2+N the same as EN 10025-2 S355J2+N?
EN 10025-2 S355J2+N, W.Nr 1.0577, High-strength structural steel are names used for S355J2+N (W.Nr / EN numbers and older UNS variants are the closest designations; their limits can differ slightly, so specify the UNS number and ASTM grade on the order), and plate is ordered to EN 10025-2 whichever name is on the enquiry.
What thickness counts as S355J2+N plate?
For S355J2+N, 3 mm and over as hot-rolled plate (dimensions to EN 10029); thinner gauges are rolled as hot-rolled wide strip and cut to sheet, with dimensions to EN 10051 (which also covers plate cut from wide strip up to 25 mm). Order the form that matches your drawing thickness.
What is the price of S355J2+N plate per kg?
It moves with steel mill prices, so a fixed list price is out of date within days. Thickness, cut size, quantity and documents also change it. Send your size and quantity and we quote the same working day.
Do you supply ultrasonically tested S355J2+N plate?
Yes, UT can be added to the order — to EN 10160 or the level your specification states. The UT report is supplied with the mill certificate.
Can S355J2+N plate be cut into circles and rings?
Yes. Blanks for blind flanges, covers and tube sheets are cut from plate to your drawing, with the heat number marked on every piece.
What machining allowance should I leave on cut plate?
It depends on the cutting method and finished tolerance. Give us the finished size and your allowance; thermally cut edges are normally machined back to sound metal.
How heavy is a S355J2+N plate?
Weight (kg) = length (m) × width (m) × thickness (mm) × 7.85. A 2000 × 1000 × 10 mm plate weighs about 157 kg; use the calculator on this page for your size.
What documents come with an export shipment?
An EN 10204 3.1 mill certificate (or 3.2 with a third-party inspector), commercial invoice, packing list with heat numbers, and certificate of origin. Test reports are added for any extra tests ordered.
Sources: the ASTM / ASME specifications named on this page and producer datasheets · Last updated October 2026