EN10025 S420N S420NL S460N S460NL Low Alloy Steel Plate

We can supply all types shipbuilding steel plate in different sizes, thin thickness to thick heavy thickness, can cut to size, cut to length, different types sheet metal fabrication, EN10025 S420N S420NL S460N S460NL Low Alloy Steel Plate,low alloy steel plate, steel plate, EN10025 LOW ALLOY steel plate, S420N steel plate, S420NL steel plate, S460N steel plate,  S460NL steel plate, S420N low alloy steel plate, s420nl low alloy steel plate, s460n low alloy steel plate. S460nl low alloy steel plate.

Sheet Metal Fabrication Service:

Steel plate cut to size cut to length: 1 pc order is ok

Steel Plate Laser Cutting: can cut thickness upto 80mm, cut by all drawings and customized sizes.

Steel Plate Flame Cutting: can cut thickness uptp 400mm.

Steel Plate Watejet Cutting: can cut thickness upto 200mm

Steel Sheet Bending: Bending all shapes

Steel plate Welding:  Customized welding

CNC machining: Customized CNC machining.

The grades, materials, dimensions can be supplied for Low Alloy Steel Plate.

The production standard and production grades and materials , and thickness can be produced, the delivery condition is as below, the production thickness when the technical property is assured, the production thickness when the UT TEST is assured, the production thickness when the chemical composition grade is assured, all are shown in the below list:

EN10025 S420N S420NL S460N S460NL Chemical Composition and Technical Property is as below:

Product Features & Highlights

• Exceptional Low-Temperature Toughness (NL Grades): A defining advantage for B2B clients operating in cold climates or harsh environments. S420NL and S460NL grades deliver minimum impact energy of 27J at -50℃ (per EN10025-3), outperforming standard N grades and many competitors. This eliminates the risk of brittle failure in winter construction, Arctic infrastructure, or refrigeration equipment—saving clients from costly rework, project delays, and safety liabilities. For example, a bridge built with S460NL in a region with -30℃ winters maintains structural integrity without additional reinforcement, reducing material and labor costs.

• Superior Weldability & Fabricability: The controlled carbon equivalent (CEV ≤ 0.45%) and low alloy content make this steel plate compatible with all standard welding methods (MIG, TIG, submerged arc welding) with minimal pre-heating requirements (only 80-100℃ for plates ≤50mm). Unlike high-carbon steels that require complex welding procedures, our low alloy plate welds smoothly, forming strong, homogeneous joints without cracking or porosity. This is a game-changer for fabricators, as it reduces labor time, lowers the need for specialized welding equipment, and ensures consistent quality across large-scale projects.

• Balanced Strength & Ductility: The S420 series (420MPa minimum yield strength) and S460 series (460MPa minimum yield strength) strike the perfect balance between load-bearing capacity and flexibility. For structural applications, this means engineers can design lighter, more efficient frameworks—reducing overall project weight by 10-15% compared to conventional carbon steel (e.g., A36, SS400)—without sacrificing safety. For mechanical equipment, the steel’s ductility absorbs shock and vibration, extending the service life of machinery components like crane booms, excavator arms, and pressure vessel shells.

• Strict Dimensional Consistency: Every plate undergoes precision rolling and post-production inspection to ensure thickness tolerance of ±0.5mm, width tolerance of ±3mm, and flatness within 2mm/m. This dimensional accuracy eliminates the need for on-site grinding or trimming, saving B2B clients valuable time during installation. Whether you’re fabricating hundreds of identical parts or assembling a large-scale structure, you can trust that each plate will fit perfectly—reducing assembly errors and improving project efficiency.

• Long-Term Durability & Corrosion Resistance: The low alloy composition, combined with the normalized heat treatment, enhances the steel’s resistance to atmospheric corrosion and wear. While not stainless, it outperforms plain carbon steel (e.g., 1045, SS400) in harsh environments, reducing maintenance costs for outdoor structures or equipment. When paired with basic painting or coating, it delivers decades of reliable performance—critical for B2B clients looking to minimize lifecycle costs and maximize return on investment.

The following are the areas of application of EN10025 S420N S420NL S460N S460NL:

• Bridge field: as the load-bearing structure and bridge decking material of bridges, to improve the load-bearing capacity and durability of bridges.

• Machinery manufacturing field: used in the manufacture of bucket teeth, bulldozer plates, excavator buckets, caterpillar chains and other components with high requirements for material strength, toughness and wear resistance.

• Power station equipment: in the electric power industry, used to manufacture a variety of equipment to withstand high pressure and high temperature.

• Lifting machinery: in the field of lifting machinery, used to manufacture a variety of load-bearing components and structures.

• Other large welded structural parts: mainly used in large ships, bridges, power station equipment, medium and high pressure boilers, high pressure vessels, rolling stock, lifting machinery, mining machinery and other large welded structural parts.