S355J2+N PlateEN 10025 · Manufacturer, stockist & 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. It is a normalised high-strength structural steel, chosen for heavy structures, cranes and offshore frames. Kanak Steel & Engineering Co. supplies it with EN 10204 3.1 mill certificates from Mumbai to buyers across India, the Gulf, South-East Asia, South America, Europe, the UK and the USA.
- 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
- 3/16" (4.76 mm) and above
- 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 | 3/16" (4.76 mm) and above — thinner is sheet |
| 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 | Plasma · waterjet · shearing · 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 |
Sheet or plate?
Both are ordered under EN 10025-2, so buyers often mix them up. The line is thickness: below 3/16" is sheet, 3/16" and over is plate. If your drawing calls for 3 mm, you need S355J2+N sheet; for 6 mm and up, you are in the right place.
S355J2+N Plate Chemical Composition
| Element | Weight % |
|---|---|
| Carbon | 0.20 max (≤16 mm) |
| Manganese | 1.60 max |
| Silicon | 0.55 max |
| Phosphorus | 0.025 max |
| Sulphur | 0.025 max |
| Copper | 0.55 max |
S355J2+N Plate Mechanical Properties
| Normalised (+N) | Value |
|---|---|
| Yield strength | 355 MPa (≤16 mm) |
| Tensile strength | 470 – 630 MPa |
| Elongation | 22% |
| Charpy impact | 27 J at −20 °C |
Density & Physical Properties
| Property | Value |
|---|---|
| Density | 7.85 g/cm³ |
| Melting range | 1420 – 1530 °C |
| Magnetic | Magnetic |
S355J2+N Equivalent Grades
Values follow EN 10025-2 for S355J2. Always check against the edition named on your purchase order.
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.
Forms we cut from S355J2+N plate
- Full mill plates and half plates
- Rectangles and squares cut to drawing
- Circles and blanks for blind flanges and dished ends
- Rings for tube sheets and baffles
- Strips for lining and weld-overlay backing
S355J2+N Plate Applications
S355J2+N is specified when the cheaper grade will not survive the service but a higher alloy would be more than the job needs. These are the jobs our buyers use it for.
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 and material is PMI-tested before processing.
- 03Processing — plasma, waterjet or shear cutting, with heat numbers transferred to every piece.
- 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.
Welding & Fabricating S355J2+N Plate
S355J2+N welds by all common arc processes. A few points our buyers ask about:
| Matching filler | E7018 / ER70S-6 |
|---|---|
| Over-alloyed filler | Preheat thick sections |
| Preheat | As required by the WPS and code for the thickness |
| Cutting | Plasma or waterjet; grind off heat-tinted edges before welding |
Follow your approved WPS; this is general guidance.
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?
Yes. EN 10025-2 S355J2+N, W.Nr 1.0577, High-strength structural steel all refer to the same material, and plate is ordered to EN 10025-2 whichever name is on the enquiry.
What thickness counts as S355J2+N plate?
Under EN 10025-2 and its general-requirements standard, flat material below 3/16" (4.76 mm) is sheet (or strip if narrower than 24") and 3/16" (4.76 mm) and over is plate. 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.
What is the minimum order quantity?
There is no fixed minimum for stock sizes — single sheets or cut pieces are quoted. Mill orders for non-stock thicknesses carry the mill's minimum.
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