Latham Steel is a trusted manufacturer and supplier based in Hamilton, New Zealand, specializing in high-quality S355JR+N steel sheets and plates. These products are crafted for structural, engineering, and heavy fabrication needs. S355JR+N is a normalized high-strength structural steel that stands out for its excellent weldability, enhanced toughness, and consistent mechanical properties. The “JR” grade guarantees impact resistance at room temperature, while the “+N” delivery condition improves grain refinement and performance reliability. Latham Steel ensures these plates come with precise dimensions and a superior surface finish, making them ideal for construction, infrastructure, machinery manufacturing, and load-bearing frameworks that demand long-lasting durability and reliability.
S355JR+N steel is composed of low carbon content, along with carefully controlled amounts of manganese, silicon, phosphorus, and sulfur. It boasts a minimum yield strength of 355 MPa and impressive tensile strength, making it perfect for structural applications. The “JR” indicates that it has been Charpy impact-tested for toughness at 20°C, while the “+N” condition signifies normalization, which enhances its microstructure and mechanical stability. This material is known for its excellent weldability, dependable ductility, and consistent hardness. Its refined grain structure also improves resistance to brittle fracture, making it suitable for moderately dynamic and demanding load conditions.
Item : S355JR+N – 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+N Steel Plate
Technique : hot rolled
Standard : EN 10025-2:2004
| Grade | C | Mn | Si | P | S | N | Cu | CEV |
| S355JR+N | 0.24 max. | 1.6 max. | 0.55 max. | 0.04 max. | 0.04 max. | 0.012 max. | 0.55 max. | 0.47 max. |
| Grade | Thickness (mm) | Min Yield (Mpa) | Tensile (Mpa) | Elongation (%) | Min Impact Energy | |
| S355JR+N | 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 | |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
S355JR+N sheets and plates find extensive use in the construction, engineering, and heavy fabrication sectors. They are commonly employed in building frames, bridges, industrial structures, steel towers, machinery components, and transport equipment. Additionally, these materials are utilized in crane structures, support beams, pressure-resistant parts, and various structural fabrications that require toughness and weldability. This grade is well-suited for moderate dynamic loading and environments that demand reliable impact resistance.
Latham Steel is a leading manufacturer, supplier and exporter of high-quality Carbon Steel, Alloy Steel, Mild Steel and Galvanized Steel products. Our extensive product range includes Pipes, Tubes, Flanges, Pipe Fittings, Forged Fittings, Sheets and Plates, catering to various industries in Hamilton, New Zealand.
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