EN10025-2 S355J0 Non-alloy structural steel plate

Product Introduction

01Product Overview

EN 10025-2 S355J0 is a non-alloy structural steel — a 355 MPa-yield European grade in the structural-steel family. Its name is a specification: S is structural steel, 355 is the minimum yield strength in MPa (up to 16 mm), J0 is the impact toughness class — a Charpy V-notch test at 0 °C with a minimum of 27 J (longitudinal) — and the material number is 1.0553. It belongs to EN 10025-2, the part of the European structural-steel standard that covers non-alloy structural steels, so “non-alloy” is the correct description here (a fine-grain correction, which applies to grades such as S355N, does not).

S355J0 is supplied as plate, sheet, coil and section for welded and bolted structures — buildings, bridges, machinery, storage tanks, agricultural and transport equipment and general fabrication. The “J0” matters: it is the 0 °C impact class, so it is the right choice for structures that may see light sub-zero temperatures but are not cold-climate critical (for full −20 °C service, step up to S355J2; for room-temperature duty, S355JR is the cheaper same-yield option). Because it is low-carbon with a carbon equivalent CEV of ≤ 0.45 %, it welds with ordinary consumables and normally needs no preheat in ordinary thicknesses.

470-630 MPaTensile Strengthmin-max band, not a single value

355 MPa minYield Strengthup to 16 mm; steps down with thickness

0 °CImpact Test Temperature≥ 27 J longitudinal (the ‘J0’ grade)

1.0553Material NumberEN 10025-2 non-alloy structural steel

02Technical Specifications

What this page publishes, and what must be confirmed on the mill certificate when you enquire.

Item	Specification
Executive Standard	EN 10025-2 (European standard for hot-rolled products of structural steels — Part 2: technical delivery conditions for non-alloy structural steels). The current edition is EN 10025-2:2019; the older listing for this grade cited EN 10025-2:2004, which is the same part — the data here follows the current edition.
Steel Grade	S355J0 (material number 1.0553)
Steel Category	Non-alloy structural steel — the correct description for S355J0 (unlike fine-grain grades such as S355N)
Product Forms Covered	Steel Plate Sheet Coil hot-rolled plate, sheet and coil on this page
Thickness Range	up to 250 mm (EN 10025-2 mechanical values are given to 250 mm; the mill confirms the exact rolling thickness on enquiry)
Production Way	As-rolled (+AR) as standard; normalized (+N) and thermomechanically rolled (+M) offered — the condition is chosen with the order
Delivery Condition	+AR / +N / +M — see section 07
Impact Requirement	0 °C, ≥ 27 J longitudinal Charpy V-notch — this is what the “J0” grade guarantees
MOQ	1 PC small-batch orders supported
Lead Time by Quantity	Stock items shipped promptly; custom production typically 10 – 40 working days by quantity
Payment Terms	T/T L/C at sight
Processing Services	Cutting to length and width, profiling, bevelling, bending, drilling, welding, Z15/Z25/Z35, heat treatment, painting and UT flaw detection (Grade 1 / Grade 2)
Certification	Mill Test Certificate to EN 10204 3.1, or 3.2 with third-party endorsement; heat analysis and mechanical test report

Two things worth clearing up about this table. First, S355J0 is a non-alloy structural steel, and “non-alloy” is the correct label here — it is not a fine-grain (micro-alloyed) steel like S355N, so the correction sometimes needed for those grades does not apply. Second, the older listing for this grade cited EN 10025-2:2004 and listed a wide set of delivery states including quenched & tempered; the standard EN 10025-2 supply is +AR / +N / +M, and quenching & tempering is an agreed add-on, not a default. The thickness figures here follow the current EN 10025-2:2019 property tables, which run to 250 mm.

03How to Read the Grade

Every part of S355J0 is a specification, not a marketing name.

Part	Meaning
S	Structural steel — the European convention for structural-steel grades.
355	The specified minimum yield strength in MPa (up to 16 mm). As with all EN 10025 grades, the first number is a yield value, not a tensile one.
J0	Impact toughness class: the steel is Charpy V-notch tested at 0 °C with a minimum absorbed energy of 27 J (longitudinal). J = impact energy tested; 0 = the test temperature (0 °C). It sits between the room-temperature JR class and the −20 °C J2 class.
1.0553	The European material number (Werkstoffnummer) for S355J0 — use it on drawings and certificates to remove any ambiguity about which grade is meant.
EN 10025-2	Part 2 of the European structural-steel standard — non-alloy structural steels. It is distinct from EN 10025-3 (normalized fine-grain, e.g. S355N) and EN 10025-4 (thermomechanically rolled / low-temperature grades).

The S355 toughness ladder at the 355 MPa level — the letter/temperature is what changes.

Grade	Standard	Min. yield	Impact test
S355JR	EN 10025-2	355 MPa	+20 °C, ≥ 27 J
S355J0 (this page)	EN 10025-2	355 MPa	0 °C, ≥ 27 J
S355J2	EN 10025-2	355 MPa	-20 °C, ≥ 27 J
S355K2	EN 10025-2	355 MPa	-20 °C, ≥ 40 J

Pick by the coldest service temperature and the yield you actually need. Across the S355 rung, S355J0 is the 0 °C option — for the same 355 MPa yield but room-temperature duty, S355JR (+20°C, cheaper) is the entry class, and for colder service use S355J2 (−20 °C) or S355K2 (−20 °C, 40 J). The yield, tensile and thickness brackets are the same across the 355 MPa rung — only the impact temperature (and K2's higher energy) differs. Note — the older listing parsed this grade as “E = Engineering steel”; that is a mis-reading. EN 10025-2 has no “E” symbol in S355J0; the grade parses as S / 355 / J0, where 355 is the yield and J0 is the 0 °C impact class.

04Equivalent Grades

S355J0 is the 355 MPa yield rung of the European structural family. The table maps it to its closest grades — a similar yield figure is not a licence to substitute; check chemistry, toughness, condition and thickness brackets before swapping. Linked grades open their own page.

Standard	Grade	Min. Yield	What to check before substituting
EN 10025-2 (this page)	S355J0	355 MPa	The European non-alloy grade — 0 °C, ≥ 27 J, material 1.0553 (this page)
EN 10025-2	S355JR	355 MPa	The same 355 MPa yield with +20 °C impact — the cheaper, room-temperature version of this grade. Choose it when sub-zero service is not a factor.
EN 10025-2	S355J2	355 MPa	The S355 rung with −20 °C impact — the colder-climate version when S355J0's 0 °C is not enough.
EN 10025-2	S355K2	355 MPa	The S355 rung with −20 °C and 40 J — the highest-toughness S355 class. Named for cross-reference.
ASTM A572	A572 Grade 50	345 MPa	The closest US plate by yield (~345 MPa). A572 does not mandate the 0 °C / 27 J impact, so add it as a supplementary requirement when substituting for S355J0.
ASTM A36	A36	250 MPa	The US structural workhorse; its yield is ~250 MPa, so it is a downward substitute for S355J0, not an equal. Confirm impact — A36 does not mandate it.
JIS G3106	SM490YA / SM490YB	~355 MPa	The Japanese high-strength structural plates at about the S355 yield — a near, not exact, match; verify chemistry and impact against the governing code.
JIS G3101	SS490B	~285 MPa (tensile-based)	The Japanese general-structural plate; its number is roughly a tensile value, so the true yield is below 355 MPa. A near, not exact, match.
GB/T 1591	Q345C / Q355C	345 MPa	The Chinese 345 MPa grade with −20 °C impact — a close Chinese equivalent for projects on Chinese spec. Its impact class is colder than S355J0's 0 °C.
GB/T 1591 (legacy)	16Mn	~345 MPa	The old Chinese designation for Q345 — a historical mapping, not an exact equivalent; cite Q345C for new designs.
DIN 17100 (legacy)	St 52-3U	355 MPa	The old German designation for S355J0 — S355J0 is the modern EN successor.
AFNOR (legacy)	E 36-3	355 MPa	The old French designation; named for cross-reference.
BS 4360 (legacy)	50C	355 MPa	The old UK designation — S355J0 is its modern EN replacement.
Old EN / UNI (legacy)	Fe 510 C	355 MPa	The old European / Italian designation; named for cross-reference.
NBN / UNE (legacy)	AE 355 C	355 MPa	The old Belgian / Spanish designation; named for cross-reference.

Strength proximity is not interchangeability. Chemistry limits, toughness classes, delivery conditions and thickness brackets all differ between these standards, and a substitution must be signed off by the designer against the governing code. Three traps to name: S355J0’s “J0” guarantees 0 °C impact — do not use it where the structure sees sustained sub-zero temperatures (use S355J2 / S355K2); the US grade A36 is about 250 MPa, so S355J0 is the safe upward substitute but A36 is not an equal; and 16Mn is a legacy GB grade mapping to Q345, not a precise S355J0 equivalent. Where a US project needs the closest band, specify ASTM A572 Grade 50 (345 MPa) and add the 0 °C impact as a supplementary requirement.

05Chemical Composition

Ladle (cast) analysis limits in weight percent, per EN 10025-2:2019 Table 2 for S355J0. S355J0 is a non-alloy grade, so the table is short — the chemistry is what keeps the carbon equivalent low and the welding easy.

Element	Ladle analysis (max %, unless noted)
Carbon, C	≤ 0.20 (thickness ≤ 40 mm); ≤ 0.22 (thickness > 40 mm)
Silicon, Si	≤ 0.55 (silicon-killed variant; fully-killed supply is often lower)
Manganese, Mn	≤ 1.60 (some editions allow 1.65 for thicker sections)
Phosphorus, P	≤ 0.030
Sulphur, S	≤ 0.030
Nitrogen, N	≤ 0.012
Copper, Cu	≤ 0.55 (when specified)

Carbon equivalent — the weldability gate.

Thickness range	CEV max (%)
≤ 40 mm	0.45
> 40 – 250 mm	0.47

Read the certificate against this table, not against a one-line data sheet. S355J0 is a non-alloy steel, so the chemistry is deliberately simple: carbon is capped at 0.20 % (or 0.22 % above 40 mm) to keep the heat-affected zone sound after welding, phosphorus and sulphur are held to 0.030 % (tighter than the 0.035 % allowed for S275JR) so the 0 °C impact can be met, and copper is optional (it slightly improves atmospheric-corrosion resistance but is not a weathering steel). The carbon equivalent CEV — C + Mn/6 + (Cr + Mo + V)/5 + (Ni + Cu)/15 — is limited to ≤ 0.45 % up to 40 mm (0.47 % above), which is why S355J0 welds without preheat in ordinary thicknesses. The older listing for this grade omitted the CEV line; it is added here.

06Mechanical Properties

Minimum room-temperature values, read against nominal thickness, per EN 10025-2. The original listing for this grade buried these in raw Excel-style tables; here they are the correct thickness ladders.

Thickness (mm)	Yield R_eH min (MPa)	Tensile R_m (MPa)
≤ 16	355	510 – 680
> 16 – 40	345	470 – 630
> 40 – 63	335	470 – 630
> 63 – 80	325	470 – 630
> 80 – 100	315	470 – 630
> 100 – 150	295	450 – 600
> 150 – 200	285	450 – 600
> 200 – 250	275	450 – 600

Elongation & impact — the properties the 0 °C / 27 J grade is defined by.

Property	Requirement
Elongation A (Lo = 5.65√So, longitudinal)	≥ 22 % for 3–40 mm; ≥ 21 % (40–63 mm); ≥ 20 % (63–100 mm); ≥ 18 % (100–150 mm); ≥ 17 % (150–250 mm)
Charpy V-notch, longitudinal	0 °C, ≥ 27 J (the S355J0 requirement — the “J0” grade)

Three points on reading the table. First, the yield is given in thickness bands (355 MPa up to 16 mm, stepping down to 275 MPa at 200–250 mm) because heavier plate receives less reduction during rolling. Second, the tensile band shifts from 510–680 / 470–630 MPa (up to 100 mm) to 450–600 MPa above 100 mm. Third, the impact is a guaranteed 0 °C / ≥ 27 J — this is the defining property of the “J0” suffix, and it is tested longitudinally; transverse values are 3 J lower by the standard. The older listing for this grade omitted the elongation line; it is added here. For any colder duty, switch to S355J2 (0°C → −20°C).

07Delivery Condition, Heat Treatment & Additional Requirements

S355J0 is normally supplied as-rolled; the order, not the grade, fixes the rest.

Item	Options
Delivery Condition	+AR — As rolled (usual) +N — Normalized +M — Thermomechanical rolled
Additional Conditions	UT Charpy V-notch Z15 / Z25 / Z35 Third-party test (SGS) Coated or shot blasted and painting
Surface Treatment	As rolled Shot blasted Primed Painted

What the specification sets, and what has to be added by the order.

Item	Status in EN 10025-2	How it is obtained
Delivery condition	As-rolled (+AR) as standard	+N (normalized) or +M (thermomechanical rolled) can be agreed where a uniform structure or finer grain is wanted; the “J0” toughness class stays the same.
Heat treatment	As-rolled is the defined supply	Normalizing is an agreed add-on, not a default; S355J0 is a non-alloy grade, so it does not carry the fine-grain alloying limits of EN 10025-3 grades.
Impact toughness	0 °C / ≥ 27 J at the “J0” grade	Built into the grade; third-party witnessed impact on request.
Ultrasonic testing	Not specified	EN 10160 at an agreed acceptance level, by agreement.
Through-thickness (Z) properties	Not specified	Z15 / Z25 / Z35 by agreement where the joint pulls through the plate thickness.
Third-party inspection	Not specified	SGS, BV, TUV or Intertek at the mill before shipment.
Certificate	MTC per the specification	EN 10204 3.1 as standard, 3.2 with third-party endorsement on request.

Keep the condition and the standard in the enquiry. S355J0 is normally delivered as-rolled (+AR) and tested per heat; anything beyond that — +N, +M, UT, Z-direction, third-party inspection — has to be written into the order before rolling, not added afterwards. Because the grade name already carries the toughness class (the “J0”), just name the standard (EN 10025-2) and the material number 1.0553 — the certificate reads S355J0 either way. The older listing listed a very wide set of states (including quenched & tempered); the standard EN 10025-2 supply is +AR / +N / +M, and Q&T is an agreed special case.

08Typical Applications

Where a 355 MPa non-alloy structural steel carries the load.

Buildings & Construction

Building frames, beams, columns, roofing and cladding support, and general structural steelwork — the most common use of S355J0 in normal- and light-cold-climate construction.

Bridges & Infrastructure

Bridge main girders, built-up sections and splice plates for pedestrian and medium-span bridges — S355J0 gives a useful yield with easy welding for fabricated structures that may see light sub-zero temperatures.

Machinery & Equipment

Construction and mining machinery frames, engineering-vehicle chassis, and fabricated machine bases — strength with weldability and formability for mobile and static duty.

Storage Tanks & Silos

Tank shells, silo walls and hoppers for non-pressure storage — S355J0’s ductility and weldability suit rolled and welded vessels that do not need pressure-vessel grades.

General Fabrication & Transport

Trailers, containers, agricultural equipment and transport structures — the higher-strength, economical rung above S275JR for fabricated and welded goods that may see light cold.

Why specify S355J0 rather than S275JR, S355JR or S355J2: it gives 29 % more yield than S275JR (355 vs 275 MPa) and a 0 °C impact that S355JR (+20°C) does not, while staying a simple, weldable, non-alloy grade with no preheat in ordinary thicknesses. What it does not give you is −20 °C impact — that is S355J2 — or a higher yield; for the same 0 °C impact at higher strength, there is no direct EN 10025-2 step, so designers move to S420 or a fine-grain grade.

09Processing, Testing & Supply

From mill plate to a cut, certified, ready-to-fit structural item.

Cutting & Profiling

Plate, sheet and coil cut to length and width, profiled to drawing and bevelled for weld preparation on flame, plasma or laser equipment.

Forming, Bending & Welding

Bending and rolling to radius, cold forming to the radius the thickness allows, plus welded assemblies built under a qualified procedure — S355J0 welds with ordinary consumables; preheat is normally unnecessary below ~25 mm because CEV ≤ 0.45, but thicker or highly restrained joints follow the qualified WPS.

Surface Treatment

Shot blasting to remove mill scale, then shop primer or full paint system, galvanizing where specified, followed by export marking and seaworthy packing.

Inspection & Certified Delivery

Chemical analysis and tensile testing per heat, 0 °C Charpy, UT and Z-direction testing when specified, then the MTC carrying the grade, the EN 10025-2 standard and any third-party report.

Mill Test Certificate to EN 10204 3.1, or 3.2 with third-party endorsement
MTC stating the grade (S355J0) and material number 1.0553
Heat analysis and mechanical test report (yield, tensile, elongation, 0 °C Charpy)
Carbon equivalent CEV reported (≤ 0.45 % up to 40 mm, ≤ 0.47 % above)
Ultrasonic testing report to the agreed acceptance level (EN 10160)
Z-direction (through-thickness) test report where Z15/Z25/Z35 is ordered
Third-party inspection by SGS, BV, Intertek or another nominated agency
Export packing, marking and loading supervision

Quote checklist — you get a faster, comparable price if you send: thickness × width × length, quantity, product form (plate, sheet or coil), delivery condition (+AR / +N / +M), the 0 °C impact requirement, UT acceptance level and any Z-direction requirement, surface treatment, MTC type, destination port and payment terms. MOQ is 1 PC.

10Frequently Asked Questions

Q1What does EN 10025-2 S355J0 actually mean?

S355J0 is a European non-alloy structural steel. S is structural, 355 is the minimum yield in MPa, and J0 is the impact toughness class — a Charpy V-notch test at 0 °C with ≥ 27 J (longitudinal). The material number is 1.0553, and the standard is EN 10025-2 (Part 2: non-alloy structural steels), distinct from EN 10025-3 (fine-grain, e.g. S355N) and EN 10025-4 (TMCP / low-temperature grades).

Q2Is S355J0 a non-alloy or a low-alloy / fine-grain steel?

S355J0 is a non-alloy structural steel per EN 10025-2 Part 2 — “non-alloy” is the correct description here. Unlike fine-grain grades such as S355N, it carries no Nb/V/Ti/Al grain-refining alloying limits; its toughness and weldability come from a low carbon content and a low carbon equivalent (CEV ≤ 0.45 %), not from micro-alloying. The site category “Carbon and Low-alloy Steel” is kept for navigation.

Q3What is S355J0 equivalent to in EN / ASTM / JIS / GB?

At 355 MPa, the same-yield options in the same standard are EN 10025-2 S355JR (+20 °C impact, cheaper) and S355J2 (−20 °C); S355K2 is the −20 °C / 40 J class. In the US the closest is ASTM A572 Grade 50 (~345 MPa); add the 0 °C impact as a supplementary requirement since A572 does not mandate it. In Japan SM490YA / SM490YB (~355 MPa) and SS490B (tensile-based, lower yield); in China Q345C / Q355C (345 MPa, −20 °C) or the legacy 16Mn. Legacy equivalents are DIN St 52-3U, AFNOR E 36-3, BS 4360 50C and Fe 510 C. All are procurement mappings; confirm against your governing code.

Q4Is the impact value 0 °C / 27 J, and what if I need colder?

Yes — EN 10025-2 specifies 0 °C with ≥ 27 J (longitudinal) for S355J0. The “J0” suffix is specifically the 0 °C impact class, so it is the right grade for structures that may see light sub-zero temperatures but are not cold-climate critical. If the structure sees sustained sub-zero service, step up to S355J2 (−20 °C) or S355K2 (−20 °C, 40 J). For room-temperature duty with the same 355 MPa yield, S355JR is the cheaper entry class.

Q5Can I substitute S355JR, S355J2, A36, A572 or SS490 for S355J0?

Only with the designer’s sign-off against the governing code. S355JR is the same-yield, cheaper option (355 MPa, +20 °C impact); S355J2 is the same-yield colder option (−20 °C). A572 Grade 50 is ~345 MPa and does not mandate the 0 °C impact, so add it as a supplementary requirement. A36 is ~250 MPa — a downward substitute, not an equal. SS490B is tensile-based (~285 MPa yield) and not a true match. S355J0’s edge is the simple, weldable, low-CEV chemistry with a guaranteed 0 °C impact.

Q6How thick, how fast, what paperwork, and is the old page’s data right?

From 1 PC, with stock items shipped promptly and custom production typically 10–40 working days by quantity. Each heat ships with an EN 10204 3.1 mill test certificate. The figures on this page re-organise and correct the older listing for this grade: the chemistry now carries the full EN 10025-2 ladle set (C ≤ 0.20 / 0.22 above 40 mm, Si ≤ 0.55, Mn ≤ 1.60, P / S ≤ 0.030, N ≤ 0.012, Cu ≤ 0.55, CEV ≤ 0.45 / 0.47) and the mechanical data is presented as the correct thickness ladders — the yield steps 355 → 275 MPa, tensile 510–680 / 470–630 / 450–600 MPa, elongation ≥ 22 % → 17 % and the 0 °C / ≥ 27 J impact the old sheet only stated in a sentence. We also corrected three things from the old listing: the grade is not parsed as “E = Engineering steel” (EN 10025-2 has no such symbol; it parses S / 355 / J0); the standard edition is EN 10025-2:2019 (the old page cited :2004); and the CEV and elongation lines, omitted on the old page, are added here.

More carbon and low-alloy structural grades we supply: S355J0 (this page) · EN 10025-2 S355JR carbon structure steel plate · EN 10025-2 S355J2 carbon structure steel plate · ASTM A572 Grade 50 hot rolled sheet plate · GB/T 1591 Q345C / Q355C low-alloy steel plate · JIS G3106 SM490YA carbon structural steel plate · JIS G3106 SM490YB carbon structural steel plate · View all carbon and low-alloy steel plate →

Sources and limits: the figures on this page are reference information drawn from EN 10025-2:2019 (S355J0, material number 1.0553) and published steel data sheets. S355J0 is a non-alloy structural steel; the chemistry limits and the tensile / yield / elongation / 0 °C / 27 J impact floors are the standard requirements, while actual heat values are recorded on the EN 10204 certificate of the lot supplied. The old listing for this grade had three issues we corrected: it parsed the grade as “E = Engineering steel” (EN 10025-2 has no “E” symbol — the grade parses S / 355 / J0); it cited EN 10025-2:2004 (the current edition is :2019); and the CEV and elongation lines, omitted on the old page, are added here. BBN supplies, cuts and processes the plate.

Get Your EN 10025-2 S355J0 Quotation Now

Send us your standard (EN 10025-2), material number (1.0553), thickness, width and length, quantity, product form, delivery condition (+AR / +N / +M), the 0 °C impact requirement and any UT / Z-direction requirement. We will reply with what the mill can roll and certify at that thickness, plate or cut-length options, mill price and production lead time — and tell you plainly if an as-rolled S355JR would do, or if a colder climate should step up to S355J2 / S355K2.

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EN10025-2 S355J0 Non-alloy structural steel plate

Product Introduction

01Product Overview

02Technical Specifications

03How to Read the Grade

04Equivalent Grades

05Chemical Composition

06Mechanical Properties

07Delivery Condition, Heat Treatment & Additional Requirements

08Typical Applications

Buildings & Construction

Bridges & Infrastructure

Machinery & Equipment

Storage Tanks & Silos

General Fabrication & Transport

09Processing, Testing & Supply

Cutting & Profiling

Forming, Bending & Welding

Surface Treatment

Inspection & Certified Delivery

10Frequently Asked Questions

Get Your EN 10025-2 S355J0 Quotation Now

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