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S355N

1.0545
carbon_steelfine_grain
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Normalized fine-grain structural steel. Same yield as S355JR/J2 but with guaranteed fine-grain structure from normalizing. Better weldability and impact toughness than standard S355. Used for bridges, cranes, heavy structural steelwork, and pressure vessels where normalized delivery is specified.

International equivalents

FlagStandardCountryGradeNumberMatch
🇪🇺ENEuropeS355N1.0545100%

Sources: EN 10025-3:2019

Chemical composition comparison (wt%)

Side-by-side: S355N (EN 10025-3) vs S355N (EN) (EN 10025-3:2019)

ElementS355N (EN 10025-3)S355N (EN)Overlap
C—0–0.2%—
Si—0–0.5%—

Mechanical properties

Compatibility verdict

S355N and S355N: 100% composition match

Related materials

C45

1.0503
unalloyed

Medium carbon unalloyed quality steel. Good machinability and moderate strength after heat treatment. Widely used for shafts, spindles, pins, studs, and general machine parts.

🇪🇺 C45🇯🇵 S45C🇬🇧 080M46 / EN8🇨🇳 45

S355JR

1.0045
structural

High-strength low-alloy structural steel with minimum yield strength of 355 MPa. Standard grade for bridges, buildings, cranes, and general structural applications. Impact tested at +20°C (JR).

🇪🇺 S355JR🇪🇺 St52-3 (old)🇨🇳 Q355B🇬🇧 BS 4360 50B

S235JR

1.0038
structural

General-purpose structural steel with minimum yield strength of 235 MPa. The most common structural steel grade in Europe for general construction, frames, and non-critical structural applications.

🇪🇺 S235JR🇪🇺 St37-2 (old)🇨🇳 Q235B🇯🇵 SS400
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