S355J0 vs S355J2: Same base steel — J0 tests at 0°C, J2 at -20°C
S355J0 vs S355J2
Side-by-side chemical composition and mechanical property comparison.
Overview
S355J0
1.0553
Non-alloy structural steel with 355 MPa min yield and 27J impact at 0°C. The "J0" variant between JR (+20°C) and J2 (-20°C). Former designation St52-3U (DIN 17100). Good weldability (CEV ≤0.47). Used for bridges, cranes, buildings, wind turbines, heavy machinery frames, and general structural applications requiring moderate low-temperature toughness.
S355J2
1.0577
High-strength structural steel with impact testing at -20°C (J2). Higher toughness than S355JR (tested at +20°C). Used for bridges, crane structures, offshore platforms, and cold-weather applications where impact toughness at sub-zero temperatures is required.
| S355J0 | S355J2 | |
|---|---|---|
| Material Number | 1.0553 | 1.0577 |
| Category | Carbon Steel | Carbon Steel |
| Standard | EN 10025-2 | EN 10025-2 |
Chemical composition (wt%)
| Element | S355J0 | S355J2 | Overlap |
|---|---|---|---|
| C | 0–0.22% | 0–0.22% | OK |
| Si | 0–0.55% | 0–0.55% | OK |
| Mn | 0–1.6% | 0–1.6% | OK |
| P | 0–0.035% | 0–0.025% | OK |
Mechanical properties
| Property | S355J0 | S355J2 | Unit |
|---|---|---|---|
| tensile_strength | 470–630 | 470–630 | MPa |
| yield_strength | ≥ 355 | ≥ 355 | MPa |
| elongation | ≥ 22 | ≥ 22 | % |
Compatibility Assessment
Identical composition and strength (YS 355, UTS 470-630). Only difference is impact test temperature: J0 guarantees 27J at 0°C, J2 at -20°C. Choose J0 for mild climates/indoor; J2 for cold climates or offshore.
Frequently Asked Questions
Is S355J0 the same as S355J2?
S355J0 and S355J2 have a 95% composition overlap. Same base steel — J0 tests at 0°C, J2 at -20°C
Can I replace S355J0 with S355J2?
In many cases, yes. The compositions overlap significantly (95%). However, always verify mechanical property requirements and heat treatment compatibility for your specific application.
What is the difference between S355J0 and S355J2?
The main differences are in the following elements: overall alloying content. S355J0 is a Carbon Steel grade, while S355J2 is a Carbon Steel grade.
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Data provided for reference only. Always verify against the applicable specification for critical applications.
All data is for reference only. Equivalents indicate similarity, not identity. Always verify against the applicable specification for safety-critical applications. materialref.com accepts no liability for decisions based on this data.