Feature of S355JR Plates
S355JR is a grade of steel that is commonly used in structural and engineering applications. It is a part of the S355 series of steel grades, which are known for their excellent mechanical properties and are widely used in construction and manufacturing. S355JR is typically used for applications where high-strength and good weldability are required. Plates made from S355JR steel are used in various industries, including construction, bridges, machinery, and more.
What is S355JR?
S355JR plates are a type of steel plates made from a grade of steel known as S355JR. S355JR is a structural grade steel with a minimum yield strength of 355 megapascals (MPa), and it is part of the S355 series of steel grades, which are known for their excellent mechanical properties. These plates are commonly used in various construction and engineering applications due to their high strength and good weldability.
Material: S355JR is a low-alloy steel grade, which means it contains a lower percentage of alloying elements compared to some other steel grades. It is primarily composed of iron, carbon, and trace amounts of other elements like manganese, silicon, and phosphorus.
High Strength: S355JR plates are valued for their high strength, making them suitable for use in structural applications where load-bearing capacity is essential.
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Equivalent Grade of S355JR
S355JR is a European standard structural steel grade, and it may have equivalent grades in other international standards. The equivalent grades of S355JR can vary depending on the specific standard and the country where the steel is being used. Here are some equivalent grades for S355JR in various international standards:
ASTM A572 Grade 50: In the United States, S355JR is often considered equivalent to ASTM A572 Grade 50, which is a high-strength, low-alloy steel.
ISO 630-2 S355B: This is an international standard for structural steel, and the equivalent grade to S355JR is often referred to as S355B under ISO 630-2.
JIS G3101 SS490: In Japan, the equivalent grade to S355JR is JIS G3101 SS490, a standard for general structural steel.
GB/T 1591 Q345B: In China, S355JR can be roughly equivalent to GB/T 1591 Q345B, which is a low-alloy, high-strength structural steel.
DIN 17100 St52-3: In Germany, the equivalent grade to S355JR is often referred to as St52-3 in accordance with the DIN 17100 standard.
EQUIVALENT GRADE OF S355JR PLATE
| EN 10025-2 | Germany DIN 17100 | UNI | JIS | BS | ||
| S355JR | 1.0045 | St 52.3 | 1.0570 | Fe510D | SS490/SM490A | 50B |
It’s important to note that these equivalences are approximate, and there may be slight differences in chemical composition and mechanical properties between the grades. When choosing an equivalent grade for a specific application, it’s advisable to consult with the relevant standards and specifications for precise information and to consider the specific requirements of the project or application. Additionally, local regulations and codes should be taken into account when selecting the appropriate steel grade.
Specifications of S355JR
S355JR is a European standard structural steel grade with various specifications and properties. It is part of the S355 series of steel grades, which are known for their high strength and good weldability. The primary specification for S355JR is EN 10025-2, which outlines the technical delivery conditions for hot-rolled structural steel plates, sheets, and wide flats.
SPECIFICATION
| Item | S355JR – Offshore & Structural Steel Plate |
| Thickness | 5mm-150mm |
| Width | 1000mm-4500mm |
| Length | 3000mm-18000mm or as custom’s request |
| Material | En 10025-2 Steel Plate, S355JR Steel Plate |
| Technique | hot rolled |
| Standard | EN 10025-2:2004 |
Chemical Composition of S355JR
Chemical Composition:
- Carbon (C): Typically less than 0.24%.
- Silicon (Si): Generally less than 0.55%.
- Manganese (Mn): Usually less than 1.60%.
- Phosphorus (P): Typically less than 0.035%.
- Sulfur (S): Generally less than 0.035%.
- Nitrogen (N): Typically less than 0.012%.
CHEMICAL COMPOSITION OF S355JR PLATE
| Grade | C | Mn | Si | P | S | N | Cu | CEV |
| S355JR | 0.24 max. | 1.6 max. | 0.55 max. | 0.04 max. | 0.04 max. | 0.012 max. | 0.55 max. | 0.47 max. |
Mechanical Properties of S355JR
Mechanical Properties:
- Minimum Yield Strength (ReH): 355 megapascals (MPa).
- Tensile Strength (Rm): 470-630 MPa.
- Elongation (A): 22% (in a 200mm test piece) or 20% (in a 50mm test piece).
- Impact Energy (KV): 27 Joules at room temperature (20°C).
MECHANICAL PROPERTIES OF S355JR PLATE
| Grade | Thickness (mm) | Min Yield (Mpa) | Tensile (Mpa) | Elongation (%) | Min Impact Energy | |
| 8mm-100mm | 315-355 Mpa | 450-630 Mpa | 18-20% | 20 | 27J | |
| 101mm-200mm | 285-295 Mpa | 450-600 Mpa | 18% | 20 | 27J | |
| 201mm-400mm | 275 Mpa | – | 17% | 20 | 27J |
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Plate Size available Ex-Stock of SAILMA 550HI, SAILMA E550, IS 2062 E550
| 1mm | 2mm | 3mm | 4mm | 6mm | 8mm | 10mm | 12mm | 14mm | 16mm | 20mm |
| 25mm | 30mm | 32mm | 36mm | 40mm | 45mm | 50mm | 63mm | 70mm | 72mm | 75mm |
| 80mm | 90mm | 100mm | 110mm | 130mm | 150mm | 170mm | 180mm | 200mm | 230mm | 270mm |
| 300mm |
Makes/Brands Available: SAIL, TATA, JSW, JSPL, Essar, POSCO, Uttam