S355J2+N · EN 10025-2 Normalised Structural Steel Plate
S355J2+N Steel Plate
The S355J2+N Steel Plate decision must be matched to the standard scope, grade, dimensions, service conditions, testing, and verifiable documents.
Price on request · confirmed against the designation/edition, delivery condition and the mill certificate
Standards, grades & dimensions
Reading the S355J2+N designation correctly
The designation carries two separate decisions — J2 sets the impact quality and +N sets the delivery condition. Connect the designation, grade, dimensions, tolerances, service conditions, inspection and documentation to the buying decision, then carry each into the RFQ for verification.
| Input | Typical basis (verify) | Buyer implication | Evidence / RFQ field |
|---|---|---|---|
| Designation | BS EN 10025-2 — hot-rolled non-alloy structural steel; the designation must be read together with the product-standard edition, the delivery condition and the project-specific toughness/testing requirement | Names the exact standard and edition; chemistry, mechanical and test minimums follow from it | Exact designation + standard edition |
| Grade | S355J2 — the N delivery condition (normalised, or an equivalent normalising rolling route as permitted) is combined with the J2 impact quality; verify the exact edition, product form, thickness, test orientation, specimen size and project requirement | Distinguishes the impact quality from the delivery condition: J2 is the toughness class, +N is how the plate is delivered — the two are separate fields on the order | Exact grade and delivery condition: EN 10025-2 S355J2+N |
| Impact quality (J2) | J2 is the toughness designation — a Charpy V-notch impact energy of 27 J at −20 °C — subject to the standard edition, thickness, test orientation, specimen size and delivery condition | Sets the low-temperature toughness basis; a J2 requirement is a separate, explicitly tested acceptance criterion, not a by-product of the grade name | Impact quality + test temperature + specimen orientation |
| Delivery condition (+N) | Normalised delivery per the standard, or a normalising rolling route where the edition permits it; stated on the mill certificate for the plate shipped | Fixes how the plate is delivered and how the mechanical values are read against the normalised condition | Delivery / heat-treatment condition as ordered |
| Product form | Plate and flat-rolled structural steel for fabrication | Fixes applicability to the plate form and its thickness / rolling basis | Product form: plate |
| Supplementary requirements | Any test group, restriction or project addendum named in the RFQ | Governing extras (e.g. test group, restricted residuals, thickness tolerance) are explicit, never assumed | Supplementary requirement set |
Impact quality (J2) and delivery condition (+N) are separate fields — neither may be assumed from the grade name alone.
| Dimension / tolerance | Typical basis (verify) | Buyer implication | Evidence / RFQ field |
|---|---|---|---|
| Thickness | Plate range (declare exact; EN 10025-2 mechanical values are thickness-dependent and decline with thickness) | Sets mass, tolerance, mechanical response and availability for the plate | Nominal thickness + unit |
| Width / Length | Per declared blank or customer size | Determines cut plan, packing and the piece count | Width × Length or plate standard size |
| Tolerance basis | Thickness / flatness tolerance per declared standard and edition | Confirms the plate meets the cut and fit intent for structural fabrication | Tolerance basis + edition |
| Unit weight | From declared density × volume — verify against MTC | Confirms mass for transport and the quotation basis | Quantity in plates and tonnes |
Units, tolerance and mass basis must be stated and verified with the mill / gauge record — computed from density, never assumed.
| Property | Typical basis (verify) | Buyer implication | Evidence / RFQ field |
|---|---|---|---|
| Yield strength | S355J2: ≈ 355 MPa minimum for the thinner thickness band, decreasing with thickness — verify per edition and normalised delivery condition | Confirms load-carrying capacity for the declared grade and thickness | Grade + thickness + test requirement |
| Tensile strength | S355J2: tensile band around 450–600 MPa tied to the yield tier — verify per edition | Confirms the structural ductility envelope for the plate | Grade + thickness + test record |
| Elongation | S355J2: elongation minimum per the declared thickness and edition | Confirms the plate can be welded and holds form in fabrication | Grade + thickness + elongation record |
| Impact / toughness | S355J2 specifies a Charpy V-notch impact energy of 27 J at −20 °C (J2), subject to the standard edition, product form, thickness, test orientation, specimen size and delivery condition | The −20 °C impact requirement is the reason a J2 plate is chosen over a JR / J0 plate — it must be stated, tested and evidenced, never inferred from a familiar grade name | Impact quality + test temperature + specimen orientation |
Mechanical and chemical values depend on grade, thickness, delivery condition and test method — carry each into the RFQ for verification against the mill certificate.
Quality, testing & documentation
What gets verified on an S355J2+N plate
Verification follows the purchase specification. Request the documents and test records the project requires, and match material identification to the ordered grade, dimensions and condition — certificates, class approvals, origin statements and special tests are confirmed for the actual supply, never assumed from this page.
- Chemistry, mechanical minimums and the non-alloy structural basis are held against the EN 10025-2 designation and S355J2 — not assumed from a matching product name.
- The −20 °C Charpy V-notch result is the J2 acceptance criterion, and the normalised (+N) condition is stated on the certificate — the two are evidenced separately, not inferred from the grade suffix.
- Dimensional, flatness, surface and edge checks, and any supplementary or third-party test, are requested explicitly — never an unsupported certificate.
Document & inspection matrix
Product evidence
- Mill Test Certificate — chemistry and mechanical minimums against EN 10025-2 S355J2
- Normalised (+N) delivery condition stated on the certificate for the plate shipped
- Heat / lot traceability to the shipped consignment
Inspection records
- Dimensional, surface or edge inspection per the agreed route
- Mechanical (yield / tensile / elongation) test record
- Charpy V-notch impact test record at −20 °C — the J2 acceptance criterion
Destination documents
- Commercial invoice and packing list
- Origin / transport documents per the Incoterm
- Customs declaration inputs for the destination
Specification Gate
S355J2+N Steel Plate specification gate
Compare the details that actually change a purchase: governing specification, grade and delivery condition, thickness and dimensions, service duty, fabrication route, inspection documents, quantity and destination. Missing inputs are flagged before an RFQ is prepared so an apparently similar option is not treated as equivalent.
RFQ summary
Fit, alternatives & selection logic
Narrowing the S355J2+N specification
Start with the service requirement, then narrow by material family, governing specification, grade, delivery condition and dimensional range. A candidate is suitable only when those order details align with the project requirement — related grades are comparison paths, not automatic substitutes.
Type and material
S355J2+N is a hot-rolled non-alloy structural steel plate under EN 10025-2, delivered in the normalised condition. Confirm the exact form, grade, impact quality and the structural / load-bearing service against the governing design code before the plate basis is fixed.
Grade and standard
The EN 10025-2 designation with grade S355J2+N carries two separate decisions: J2, the impact quality specifying a Charpy V-notch impact energy of 27 J at −20 °C, and +N, the normalised delivery condition. Both must be named together with the edition, thickness band, test orientation and any supplementary requirement — the grade suffix does not fix the acceptance basis on its own.
Dimensions and tolerances
Thickness, width, length and the tolerance basis fix the plate, its unit weight and its mechanical response. Keep the unit system coherent and cite the edition.
Service temperature
The −20 °C impact requirement is normally the reason this grade is selected. Confirm the minimum design metal temperature, whether the impact test must be taken at a specified orientation, and whether the project asks for a lower test temperature — the service temperature drives the quality, not the other way round.
Chemistry
What defines an S355J2+N Steel Plate
Composition is a purchasing input, not a slogan. The non-alloy structural balance and the grade's specified Charpy V-notch impact energy (27 J at −20 °C for J2, subject to edition and condition) are stated against the declared designation and verified against the mill certificate — never assumed from the grade name alone.
S355J2+N is a hot-rolled non-alloy structural steel: the controlled base composition (carbon, manganese, silicon, phosphorus, sulphur, nitrogen and limited copper) delivers the 355 MPa minimum yield tier through thickness and rolling, without deliberate alloy additions. The exact composition is verified against the mill certificate — never assumed from the grade name alone.
RFQ field: the chemistry requirement is written into the MTC / certificate request and verified against the plate actually shipped.
Normalising delivers a ferrite-pearlite structure with the toughness behaviour the J2 quality is tested against. Because the grade is chosen for impact performance at −20 °C, the delivery condition and the impact test are read together: any change of condition (or of thickness band) changes how the plate's toughness is established, so both the +N condition and the −20 °C test record are verified against the declared edition before the plate is accepted into fabrication.
RFQ field: the chemistry requirement is written into the MTC / certificate request and verified against the plate actually shipped.
Equivalents
Comparing S355J2+N Steel Plate on evidence, not a name
A related alternative is comparable only when the governing requirements have been compared and verified. No absolute product-superiority claim is made — each difference is a decision the buyer and coordinator reconcile to the structural service.
Another related structural steel grade or standard is comparable only when its chemistry, mechanical minimums, thickness/tolerance basis, weldability and — critically — its impact requirement and delivery condition match the intended structural service. Every difference is verified against the mill certificate and the governing project specification.
Buyer implication: place this into the RFQ as an explicit comparison basis before any substitution is accepted.
Do not present a different grade — including the S355JR sibling or the lower-toughness S355J0 quality — as equivalent to S355J2+N from the name alone. The grade, edition, delivery condition, chemistry, minimum yield/tensile, thickness dependency, Charpy impact requirement at −20 °C and elongation are the buyer's and the coordinator's to confirm against the load-bearing service before any substitution is accepted.
Buyer implication: place this into the RFQ as an explicit comparison basis before any substitution is accepted.
Related grade and resource routes
Follow a related link only when it answers a real specification decision — a neighbouring page is not evidence that two materials are interchangeable.
S355JR Steel Plate
S355 with a Charpy V-notch impact energy of 27 J at +20 °C — where the service temperature is above −20 °C and the design allows a less demanding impact quality.
Compare S355JR Steel PlateEN 10025 plate standard
The governing plate standard and edition behind the S355 designation, delivery condition and impact quality on the order.
Compare EN 10025 plate standardMTC requirements
Mill Test Certificate & document evidence for S355J2+N Steel Plate
The MTC ties the chemistry and mechanical minimums to the plate actually shipped, with heat / lot traceability. Every document is requested against the declared designation, delivery condition and inspection route — never an unsupported certificate.
The MTC ties the chemistry and mechanical minimums to the plate actually shipped, with heat / lot traceability. For S355J2+N it is requested together with the test record (yield, tensile, elongation) and the Charpy V-notch impact result at −20 °C against the declared EN 10025-2 basis — never an unsupported certificate.
RFQ field: state the MTC, normalised (+N) condition statement, heat / lot traceability, chemical and mechanical test record, dimensional/gauge record and the −20 °C impact requirement in the RFQ so the document set matches the plate shipped.
Dimensional, flatness, surface, edge, mechanical-test and any third-party or supplementary impact tests are requested explicitly, alongside the commercial, origin and transport documents for the destination. Every document is quotation-dependent and stated before acceptance.
RFQ field: state the MTC, normalised (+N) condition statement, heat / lot traceability, chemical and mechanical test record, dimensional/gauge record and the −20 °C impact requirement in the RFQ so the document set matches the plate shipped.
Advantages
How the S355J2+N Steel Plate decision gets safer
A well-qualified enquiry reduces rework at three points: material selection, document review and fabrication hand-off. The practical gain is not a generic promise of superiority — it is a clearer comparison between compliant offers, earlier visibility of missing requirements and a more complete RFQ for technical review.
Risk
Wrong-grade substitution
The RFQ forces a named EN 10025-2 designation, edition, grade and delivery condition (S355J2+N, not S355JR or S355J0) before any value is shown, matching the structural plate application.
Risk
Impact and delivery-condition ambiguity
The −20 °C Charpy requirement and the normalised (+N) delivery condition are separate RFQ fields, carried together under one stated unit system.
Risk
Undocumented testing, chemistry or MTC
Inspection, chemistry, mechanical-test, −20 °C impact and traceability needs are explicit RFQ fields, requested against the declared basis before quotation.
Risk
Quotation gaps or hidden assumptions
Application, processing, destination, Incoterm and date are separate explicit fields, never buried in a price.
Risk
Unsupported stock or lead-time claims
Every stock, price, origin or delivery claim is either verified or left to the RFQ to confirm against the mill and destination process.
Journey
From an S355J2+N requirement to a documented consignment
Seven checkpoints carry the enquiry from a requirement to a confirmed, documented delivery — each with the responsible owner and the input the RFQ expects. At each step, unresolved requirements stay open rather than being replaced by assumptions.
Requirement
Buyer
In: Designation, grade/edition, impact quality (J2), delivery condition (+N), product form, thickness, width, length, quantity and minimum service temperature.
Out: S355J2+N basis stated; route and material identified.
No edition, impact quality or delivery condition named.
Next: Name the designation/edition, quality and condition.
Destination & importer
Buyer + commercial
In: Destination, port or delivery location, importer/consignee details.
Out: Destination and clearance owner explicit.
Importer not confirmed.
Next: Add importer/consignee inputs.
Documents & Incoterm
Buyer + commercial
In: Invoice/origin/transport-document needs, Incoterm + named place.
Out: Document set and delivery terms stated.
Customs assumptions unstated.
Next: Confirm document checklist.
Quotation
Commercial
In: Quantity, Incoterm, destination, date.
Out: Availability and pricing on request.
Unknown lead time.
Next: Receive confirmed offer.
Inspection & documents
Technical / QA
In: Dimensional, surface, flatness, mechanical-test, chemistry and the Charpy impact check at −20 °C.
Out: Thickness, width, length, impact result and mass reconciled to the mill ticket and test record.
Missing gauge, impact or test report.
Next: Approve document set.
Packing & shipping
Supplier / forwarder
In: Strapping, marking, Incoterm, port.
Out: Coordinated to the destination.
Document delay.
Next: Track to delivery location.
Delivery & follow-up
Commercial
In: Site handover, closed-out docs.
Out: Handed to site with documents.
Open claims.
Next: Close out.
FAQ
S355J2+N Steel Plate questions
Straight answers to the questions procurement and QA teams ask most. Each answer depends on the project specification and the actual order conditions.
Which standard, grade and delivery condition should be stated on an RFQ for S355J2+N Steel Plate?
When does the impact quality and heat treatment matter most on this grade?
Which dimensions and tolerances govern acceptance?
Which inspection documents should be requested?
Can a related grade be substituted, and what destination details are needed for a firm offer?
Qualified RFQ
Request a qualified S355J2+N Steel Plate quote
Provide the standard/grade or the service requirement, thickness, width, length, quantity, destination, required documents and any cutting, testing or inspection scope. If a requirement is still undecided, state it explicitly so the technical review can identify what must be resolved before a commercial offer is finalised.
Price on request · availability and lead time confirmed with your quotation
Applications
S355J2+N Steel Plate, mapped to service duty
Application fit depends on what the plate will do in service and how it will be fabricated. Use these paths only where the duty matches — the same nominal plate description can require different toughness, weldability, corrosion, wear or documentation controls.
Structural fabrication
Structural and load-bearing service: confirm the grade, delivery condition, thickness dependency, testing and documentation discipline against the governing design code before the plate basis is fixed.
Explore Structural fabricationBoiler & pressure support
Structural support around pressure service: check whether the operating conditions, temperature and failure risks change grade, testing, fabrication or documentation choices.
Explore Boiler & pressure supportPressure equipment
Pressure-retaining service is governed by a different material standard in most cases — use this path to check whether a structural grade such as S355J2+N is the correct basis, or whether a pressure-vessel specification applies instead.
Explore Pressure equipmentGCC markets
GCC procurement for S355J2+N Steel Plate
For GCC procurement, keep the technical specification unchanged while checking the destination-specific import path, consignee requirements and shipment documents. Customs, conformity and duty treatment must be confirmed for the actual shipment.
United Arab Emirates
Destination and import documentation.
Carry the S355J2+N Steel Plate specification, destination emirate and importer inputs into the RFQ so the quotation and document set match the UAE requirement for the declared plate.
United Arab Emirates
Saudi Arabia
Project specification and import documentation.
Confirm the EN 10025-2 designation, the N delivery condition, impact quality, dimensions, quantity and delivery window so the plate estimate and logistics stay aligned to the order and the governing project spec.
Saudi Arabia
Qatar
Specification and delivery inputs.
State the S355J2+N standard, normalised delivery condition, thickness, width, length, quantity, documents and delivery base so the Qatar quotation is fixed on a verified dimensional and testing basis.
Qatar
Oman
Port-oriented supply for industrial projects.
Oman projects are typically supplied through port destinations, harmonising the S355J2+N Steel Plate specification with the project's fabrication and inspection requirements.
Oman
Kuwait
Contractor procurement and fabrication hand-off.
Link plate selection and any cutting to the fabrication and inspection needs, with shipment agreed against the destination and delivery window.
Kuwait
Bahrain
Industrial supply and re-export coordination.
Coordinate material and testing documentation to the delivery requirement so the S355J2+N Steel Plate and its document set stay aligned.
BahrainLogistics & Incoterm
Commercial comparison after the technical basis is aligned
Quote requests should identify quantity, plate dimensions, destination, required delivery term, inspection/document package and any processing scope. Price, stock and lead time must be confirmed for the live enquiry rather than inferred from a catalogue page.
Packing
Plates stacked, strapped and marked by size, grade, heat and lot, matched to the declared route and destination. Confirm packing in the RFQ.
Delivery route
Name the destination, port or delivery location. Delivery terms are matched to the route and stated on the quotation.
Incoterm & named place
State the Incoterm and named place so packing, transport and document obligations are explicit and auditable for the S355J2+N Steel Plate import.
References
Related pages and technical resources
Compare a closer grade, standard, material, application or technical guide before requesting a quote, keeping the structural material basis consistent across the specification.
EN steel grades
Compare the same material or process across the product forms under the EN 10025 standard, holding the grade and chemistry basis consistent across the specification.
Explore EN steel gradesSteel plate standards
Check the governing plate standard and its edition before the designation is written into the RFQ, so the acceptance basis is unambiguous.
Explore Steel plate standardsCutting & processing
Review how cutting, edge preparation and processing scope change the order, the packing and the inspection requirements.
Explore Cutting & processingRelated steel plate pages
Parent and cluster paths that keep the plate specification intact while you compare the product forms.
Expert insight
Reading BS EN 10025-2 for a normalised plate
The safest purchasing sequence for S355J2+N Steel Plate is to identify the governing service requirement first, then lock the material specification and edition, grade, delivery condition, dimensions, testing and documents. That sequence avoids comparing offers that share a familiar name but differ in acceptance basis or fabrication risk.
What the standard governs
BS EN 10025-2 covers hot-rolled non-alloy structural steels in the S275 and S355 strength tiers, with S355J2+N a common structural plate grade for lower-temperature service. S355 carries a 355 MPa minimum yield designation that falls with thickness. Under EN 10025-2 the suffix carries two separate decisions: J2 specifies a Charpy V-notch impact energy of 27 J at −20 °C, and +N specifies the normalised delivery condition (or a normalising rolling route where the edition permits it) — each subject to the standard edition, product form, thickness, test orientation and specimen size. The chemistry, mechanical minimums, thickness dependency and test method follow from the edition the RFQ names, and every value is established against the plate actually shipped.
As a steel trading house we do not guarantee that a listed standard applies to every case — the EN 10025-2 designation, edition, grade, delivery condition and impact quality are reconciled to the structural / load-bearing application before an order, and the working frame is the listed BS EN 10025-2 reference.
Expert perspective on S355J2+N procurement
- Separate the impact quality from the delivery condition. J2 sets the −20 °C toughness requirement and +N sets how the plate is delivered. Naming them as one field is where the acceptance basis gets lost.
- Bring the chemistry and mechanical evidence. Hold the mill ticket, heat / lot traceability, gauge and yield/tensile/elongation record against the plate, together with the −20 °C impact result.
- Plan the inspection route. Dimensional, flatness, surface, edge and impact checks are explicit — documentation follows the plate, not the other way round.
- Keep the route explicit. Destination, Incoterm and packing are decisions stated on the quotation, not assumptions.