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EN 10025 S355J2 Meaning
S355J2 Meaning: "S" stands for "Structural steel"; 355 indicates that the material has a minimum yield strength of 355 MPa when the nominal thickness is ≤ 16mm; and "J2" indicates that the material has a minimum impact energy of 27J at -20°C (-4 °F).
S355J2 Steel Properties
S355J2 steel properties are listed in the datasheet below, including chemical composition, physical and mechanical properties, etc.
Chemical Composition
Chemical composition based on heat analysis.
| Chemical Composition, % (≤) | |||||||||
| Standard | Steel (Material Number) | C | Si | Mn | P | S | Cu | N | Method of deoxidation |
| EN 10025-2 | S355J2 (1.0577) | 0.20 | 0.55 | 1.60 | 0.025 | 0.025 | 0.55 | – | Fully killed |
Note: For carbon content (C) and nominal thickness (t)
C ≤ 0.20 % when t ≤ 16mm,
C ≤ 0.22 % when t > 30 mm,
C by agreement when sections with nominal thickness > 100 mm.
For long products the P and S content can be 0.005 % higher.
| Chemical Composition (Product Analysis), % (≤) | |||||||||
| Standard | Steel (Material Number) | C | Si | Mn | P | S | Cu | N | Method of deoxidation |
| EN 10025-2 | S355J2 (1.0577) | 0.23 | 0.6 | 1.70 | 0.035 | 0.035 | 0.60 | – | Fully killed |
Note: For carbon content (C) and nominal thickness (t)
C ≤ 0.23 % when t ≤ 16mm,
C ≤ 0.24 % when t > 30 mm,
C by agreement when sections with nominal thickness > 100 mm.
For long products the P and S content can be 0.005 % higher.
Mechanical Properties
S355J2 mechanical properties at room temperature are listed in the datasheet below, including tensile strength, yield strength, and elongation, etc.
| Yield Strength, Mpa, ≥ | |||||||||
| Steel Grade (Steel Number) | t≤16 | 16< t ≤40 | 40< t ≤63 | 63< t ≤80 | 80< t ≤100 | 100< t ≤150 | 150< t ≤200 | 200< t ≤250 | 250< t ≤400 |
| S355J2 (1.0577) | 355 | 345 | 335 | 325 | 315 | 295 | 285 | 275 | 265 |
| Tensile Strength, Mpa, ≥ | |||
| Steel Grade (Material Number) | t<3 | 3 ≤ t ≤ 100 | 100 < t ≤400 |
| S355J2 (1.0577) | 510-680 | 470-630 | 450-600 |
Note:
1 MPa = 1 N/mm2
t = Nominal Thickness (mm)
Physical Properties
Density: 7.85 g/cm3 (0.284 lb/in3)
Melting point: 1450-1530 °C (2640-2800 °F)
Elongation After Fracture
Minimum percentage elongation after fracture
| Elongation after fracture (%, ≥), L0 = 80 mm | |||||
| ≤1 | 1< t ≤1.5 | 1.5< t ≤ 2 | 2< t ≤ 2.5 | 2.5< t < 3 | Orientation of test pieces |
| 14 | 15 | 16 | 17 | 18 | Parallel |
| 12 | 13 | 14 | 15 | 16 | Transverse |
| Elongation after fracture (%, ≥), L0 = 5.65 √So | |||||
| 3≤t≤40 | 40< t ≤63 | 63 < t ≤100 | 100 < t ≤ 150 | 150 < t ≤ 400 | Orientation of test pieces |
| 22 | 21 | 20 | 18 | 17 | Parallel |
| 20 | 19 | 18 | 18 | 17 | Transverse |
Material S355J2 Equivalent Steel Grades
S355J2 steel equivalent materials are listed below, including ASTM, German DIN, ISO, Australian, Canadian, Chinese and Indian IS standard, etc.
| S355J2 Steel Equivalent Material | |||||||||||||||
| European Union | USA | Germany | ISO | Australia | Canada | China | Indian | ||||||||
| Standard | Grade (Material Number) | Standard & Grade | Grade | Standard | Grade | Standard | Grade | Standard | Grade | Standard | Grade, SI (Imperial) | Standard | Grade | Standard | Grade |
| EN 10025-2 | S355J2 (1.0577); S355J2G3 |
ASTM A992/A992M; ASTM A572/A572M |
A572 Grade 50 [345]; A992 |
DIN 17100 | St 52-3N | ISO 630-2 | S355D | AS/NZS 3678 | Grade 350 L20 | G40.20/G40.21 | 350WT (55WT) | GB/T 1591 | Q345D; Q355D |
IS 2062 | E350 |
Notes for standards:
ASTM A992/A992M: Structural Steel Shapes.
ASTM A572/A572M: High-Strength Low-Alloy Columbium-Vanadium Structural Steel.
AS/NZS 3678: Structural steel – Hot-rolled plates, floorplates and slabs.
G40.20/G40.21: General requirements for rolled or welded structural quality steel.
GB/T 1591: High strength low alloy structural steels.
IS 2062: Hot rolled low, medium and high tensile structural steel.
ISO 630-2: Technical delivery conditions for structural steels for general purposes.
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