EN10025 S355JR Steel (1.0045 Material)
S355JR steel (1.0045 material) is one of the quality grades in S355 steel group, the steel has a minimum yield strength of 355 MPa (51 ksi) when the thickness is ≤16mm, and the minimum impact energy 27J at room temperature 20 °C (68 °F). The S355 steel group also includes other quality grades such as: S355J0, S355J2 and S355K2.
S355JR Material Properties
S355JR material 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 | S355JR (1.0045) | 0.24 | 0.55 | 1.60 | 0.035 | 0.035 | 0.55 | 0.012 | Rimming steels not allowed |
| Chemical Composition (Product Analysis), % (≤) | |||||||||
| Standard | Steel (Material Number) | C | Si | Mn | P | S | Cu | N | Method of deoxidation |
| EN 10025-2 | S355JR (1.0045) | 0.27 | 0.60 | 1.70 | 0.045 | 0.045 | 0.60 | 0.014 | Rimming steels not allowed |
Note:
- For carbon content (C) and nominal thickness (t), C by agreement when sections with nominal thickness > 100 mm.
- For long products the P and S content can be 0.005 % higher.
- If the chemical composition shows a total aluminum (Al) content of ≤0.020% or acid-soluble Al ≤ 0.015%, or if sufficient other nitrogen-binding elements are present, the N maximum does not apply. In this case, the nitrogen-binding element should be mentioned in the inspection document.
Mechanical Properties
S355JR mechanical properties at room temperature are listed in the datasheet below, including tensile strength, yield strength, and elongation, etc.
| Yield Strength, Mpa, ≥ | |||||||||
| Steel Grade (Material 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 |
| S355JR (1.0045) | 355 | 345 | 335 | 325 | 315 | 295 | 285 | 275 | 265 |
| Tensile Strength, Mpa, ≥ | |||
| Material (Steel Number) | t<3 | 3 ≤ t ≤ 100 | 100 < t ≤400 |
| S355JR (1.0045) | 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
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 S355JR Equivalent Steel Grades
S355JR steel equivalent ASTM, German DIN, ISO, Australian, Canadian, Chinese and Indian standard are listed in the table below.
| S355JR Steel Equivalent Material | |||||||||||||||
| European Union | USA | Germany | ISO | Australia | Canada | China | Indian | ||||||||
| Standard | Grade (Material Number) | Standard | Grade | Standard | Grade | Standard | Grade | Standard | Grade | Standard | Grade: SI (Imperial) | Standard | Grade | Standard | Grade |
| EN 10025-2 | S355JR (1.0045) | ASTM A992/A992M; ASTM A572/A572M |
A572 Grade 50 [345]; A992 |
DIN 17100 | St 52-3 | ISO 630-2 | S355B | AS/NZS 3678 | Grade 350 | G40.20/G40.21 | 350W (55W) | GB/T 1591 | Q345B | 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 steels.
- GB/T 1591: High strength low alloy structural steels.
- IS 2062: Hot rolled low, medium and high tensile structural steels.
- ISO 630-2: Technical delivery conditions for structural steels for general purposes.
