S355J0 is a European standard (EN 10025-2) non-alloy structural steel, known for its minimum yield strength of 355 MPa, good weldability, and toughness at 0°C, indicated by the 'J0' (0°C impact test). It's a low-carbon manganese steel, suitable for general construction, bridges, and machinery in mild climates, often supplied normalized or untreated, and is similar to ASTM A572 Grade 50.
Key Characteristics:
Strength: Minimum yield strength of 355 MPa.
Impact Resistance: Tested to provide at least 27 Joules at 0°C (indicated by 'J0').
Composition: Low carbon (max 0.20%) and manganese content, making it easily weldable.
Condition: Often supplied normalized or untreated for good machinability and formability.
Applications:
General construction and structural engineering.
Bridges, ships, and power plant equipment.
Lifting and transport machinery.
Structures requiring good weldability and strength in mild (above 0°C) conditions.
Equivalents:
ASTM A572 Grade 50
DIN St52-3
JIS SM490
Chemical composition % of steel S355J0 (1.0553): EN 10025-2-2004
| Nominal thickness =< 40(mm) C max = 0.20 Nominal thickness =< 30(mm) CEV max = 0.45 |
| C | Si | Mn | P | S | N | Cu | CEV |
| max 0.22 | max 0.55 | max 1.6 | max 0.035 | max 0.035 | max 0.012 | max 0.55 | max 0.47 |
Mechanical properties of steel S355J0 (1.0553)
| Nominal thickness (mm): | to 3 | 3 - 100 | 100 - 150 | 150 - 250 |
| Rm - Tensile strength (MPa) Flat and long products | 510-680 | 470-630 | 450-600 | 450-600 |
| Nominal thickness (mm): | to 16 | 16 - 40 | 40 - 63 | 63 - 80 | 80 - 100 | 100 - 150 | 150 - 200 | 200 - 250 |
| ReH - Minimum yield strength (MPa) Flat and long products | 355 | 345 | 335 | 325 | 315 | 295 | 285 | 275 |
| KV - Impact energy (J) longitud., | -20° 27 |
0° 27 |
+20° 27 |
| Nominal thickness (mm): | to 1 | 1 - 1.5 | 1.5 - 2 | 2 - 2.5 | 2.5 - 3 |
| A - Min. elongation Lo = 80 mm (%) parallel, | 14 | 15 | 16 | 17 | 18 |
| Nominal thickness (mm): | 3 - 40 | 40 - 63 | 63 - 100 | 100 - 150 | 150 - 250 |
| A - Min. elongation Lo = 5,65 √ So (%) parallel, | 22 | 21 | 20 | 18 | 17 |
Equivalent grades of steel S355J0 (1.0553)
Warning! Only for reference
| EU EN |
USA - |
Germany DIN,WNr |
Japan JIS |
France AFNOR |
England BS |
European old EN |
Italy UNI |
Belgium NBN |
Spain UNE |
China GB |
Sweden SS |
Finland SFS |
Austria ONORM |
Norway NS |
Inter ISO |
Portugal NP |
India IS |
||||||||||||||||||||
| S355J0 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1. What is S355J0 steel?
S355J0 is a non-alloy structural steel grade per EN 10025-2, with a minimum yield strength of 355 MPa and guaranteed impact toughness at 0°C.
2. What does the 'J0' in S355J0 mean?
The 'J0' indicates Charpy V-notch impact testing at 0°C, ensuring a minimum absorbed energy of 27 Joules for reliable performance in cold conditions.
3. What are the main applications of S355J0?
It is commonly used in bridges, offshore structures, building frames, and heavy machinery in temperate climates where temperatures may drop to freezing.
4. What is the difference between S355JR and S355J0?
S355JR is impact tested at +20°C, while S355J0 is tested at 0°C, making J0 suitable for applications exposed to near-freezing temperatures.
5. What is the yield strength of S355J0?
The minimum yield strength is 355 MPa for thicknesses up to 16 mm, with decreasing values for thicker sections per EN 10025-2.
6. Can S355J0 be welded?
Yes, S355J0 has good weldability, but proper procedures-including potential preheating for thick sections or cold environments-should be followed.
7. Is S355J0 equivalent to ASTM A572 Grade 50?
Not directly. While strength is similar, S355J0 includes mandatory impact toughness at 0°C, which is not required in standard A572 Grade 50.
8. What is the chemical composition of S355J0?
It typically contains max 0.24% Carbon, max 1.60% Manganese, and controlled phosphorus/sulfur (e.g., P ≤ 0.035%, S ≤ 0.035%).
9. Is S355J0 corrosion resistant?
No, it is not corrosion-resistant and requires protective coatings like painting or galvanizing for outdoor use.
10. How does S355J0 compare to S355J2?
S355J0 is impact tested at 0°C, while S355J2 is tested at -20°C, making J2 suitable for even colder (sub-zero) environments.
11. What are the mechanical properties of S355J0?
Key properties include yield strength ≥355 MPa (t≤16mm), tensile strength 470-630 MPa, elongation ≥20-22%, and 27J impact energy at 0°C.
12. Is S355J0 suitable for low-temperature service below 0°C?
No, S355J0 is certified only for 0°C. For sustained service below freezing, grades like S355J2 (-20°C) or S355K2 (-20°C with higher impact energy) should be used.
Full specification and details are available on request. The above information is provided for guidance purposes only. For specific design requirements please contact our technical sales staff.
