The EN 10025-5 S460J2W Weathering Steel Plate, -20℃ Impact is a high-performance structural material compliant with European standards, designed for demanding environments requiring strength, extreme low temperature toughness, and natural resistance to atmospheric corrosion. Meeting EN 10025-5:2004, it provides a minimum yield strength of 460MPa (for thicknesses ≤16mm), ensuring robust load-bearing capacity in heavy-duty projects, while the "J2" designation signifies impact resistance tested at -20℃ with a minimum KV2 value of 27J-critical for structures in freezing climates.
Engineered with alloying elements like copper (0.25–0.55%), chromium, and nickel, this steel forms a dense, adherent rust layer that acts as a protective barrier, slowing substrate corrosion and reducing the need for frequent coatings. This weathering property makes it cost-effective for outdoor installations, minimizing lifecycle maintenance costs. Mechanical properties remain consistent across thicknesses: yield strength decreases slightly to 440MPa (16–40mm) and 400MPa (63–80mm), while tensile strength ranges from 550–720MPa (thin plates) to 530–680MPa (thicker sections), with an elongation rate of ≥19% ensuring ductility under stress.
Its -20℃ impact resistance makes it ideal for applications in cold regions, such as northern railway bridges, industrial steel frameworks in sub-zero environments, or coastal structures exposed to both low temperatures and salt-laden air. The steel's balanced chemical composition supports good weldability, though proper techniques-including controlled heat input and preheating for thicker sections-are recommended to maintain the integrity of heat-affected zones.
Typical uses include cold-climate infrastructure (towers, storage tanks), transportation (railway carriages, shipping containers), and architectural structures where durability and resistance to harsh weather are essential. By combining high strength, extreme low temperature toughness, and weathering performance, S460J2W offers a reliable solution for long-lasting, low-maintenance structures. Always consult the EN standard or suppliers for detailed technical specifications to ensure suitability for specific project requirements.
FAQ
Q: What does "J2" mean in S460J2W?
A: "J2" indicates the steel passes impact tests at -20℃ with a minimum KV2 of 27J.
Q: What is the yield strength of this steel plate?
A: Minimum 460MPa for thicknesses ≤16mm, decreasing slightly with thicker sections.
Q: How does S460J2W resist corrosion?
A: Alloy elements like copper and chromium form a protective rust layer, reducing corrosion rates.
Q: In which environments is this steel best used?
A: Ideal for cold climates (-20℃), coastal areas, and structures needing high strength and weather resistance.
Q: Does it require special welding precautions?
A: Yes-use controlled heat input and preheat thicker sections to maintain impact toughness in welds.
