EN 10025-5 S355K2W (1.8967) Weathering Steel Plates with 40 J Impact at −20 °C
Dinesh Tube India supplies S355K2W plates from Mumbai, including orders placed under the old names S355K2G1W and S355K2G2W. S355K2W (material number 1.8967) is the toughest standard S355 weathering grade in EN 10025-5. It has the same chemistry and strength as S355J2W, but a higher guaranteed impact energy: 40 J at −20 °C instead of 27 J. We supply it in +N or +AR condition, in full plates or cut sizes, with EN 10204 3.1 certificates.
Engineers specify K2W for bridges, cranes and dynamically loaded or cold-climate structures where extra toughness margin is required. For all Corten grades, see our Corten steel plates page.
What Is S355K2G1W / S355K2W?
- S355: structural steel, minimum yield 355 MPa (thickness up to 16 mm)
- K2: Charpy impact energy of at least 40 J at −20 °C
- G1 / G2: deoxidation and production variants in the old EN 10155 standard, no longer used
- W: weathering steel with improved atmospheric corrosion resistance
Copper, chromium and nickel in the steel form a protective patina outdoors, so K2W structures can usually be left unpainted. It is not stainless steel and is not intended for marine immersion, coastal splash zones, chemical service or surfaces that stay wet.
S355K2W vs S355J2W vs S355J0W
Closest non-European equivalent: ASTM A588 Gr A with supplementary Charpy testing, or ASTM A709 Grade 50W for bridges.
S355K2W Chemical Composition (Ladle Analysis, %)
Same limits as S355J2W. Check the current EN 10025-5 edition and the mill certificate for governing values.
S355K2W Mechanical Properties
Impact: 40 J minimum at −20 °C (longitudinal Charpy V).
S355K2W Plate Applications
Need S355K2W or S355K2G1W plates? Send thickness, plate size or cut sizes, quantity, delivery condition (+N or +AR) and delivery location to kamlesh@dineshtube-india.com or call +91 83559 10913. You can also send an enquiry.
S355K2G1W / S355K2W Plates: FAQs
What is S355K2G1W?
S355K2G1W is the old EN 10155 name for a weathering structural steel with 355 MPa minimum yield (up to 16 mm) and 40 J impact energy at −20 °C. It is now called S355K2W (1.8967) under EN 10025-5.
What is the difference between S355K2W and S355J2W?
Chemistry and strength are the same. S355K2W guarantees 40 J Charpy impact energy at −20 °C, while S355J2W guarantees 27 J at −20 °C. K2W is chosen where a higher toughness margin is required.
What does K2 mean in S355K2W?
In EN steel names, K2 means a minimum Charpy V-notch impact energy of 40 J at −20 °C. J2 means 27 J at −20 °C, and J0 means 27 J at 0 °C.
Is S355K2G1W still available?
Yes, under its current name. Mills produce and certify it as S355K2W to EN 10025-5. If your drawing says S355K2G1W or S355K2G2W, S355K2W is the accepted replacement; confirm with your engineer if the drawing must be formally updated.
What is the equivalent of S355K2W?
There is no exact US equivalent with the same impact rating. The closest is ASTM A588 Gr A with supplementary Charpy testing, or ASTM A709 Grade 50W for bridges.
Which certificates come with S355K2W plates?
Every supply comes with an EN 10204 3.1 mill test certificate showing heat number, chemical analysis, tensile and Charpy impact results to EN 10025-5. EN 10204 3.2 certificates and third-party inspection can be arranged on request.