EN 10025-5 Grade S355K2W
EN 10025-5 Grade S355K2W introduction
ArcelorMittal's steel with improved atmospheric corrosion resistance is in compliance with the EN 10025-5:2004 standard. This grade is fine-grain, high-strength structural steels offering high yield strength and improved corrosion resistance in specific aggressive environments.
When used uncoated and exposed to bad weather, an oxide layer develops on the steel surface, forming a purplish-brown, finely grained patina that bonds very strongly to the steel and protects it. With their characteristic colour, steels with improved atmospheric corrosion resistance are used in architectural projects either to harmonise with the environment or to create a pleasing contrast with other materials, such as stainless steel. If the patina is damaged, the steel re-oxidises, thus repairing the patina and maintaining the protective barrier.
Steel with improved atmospheric corrosion resistance can also be coated (paint, metallic coatings etc).
Experience has shown that organic coatings adhere better to this steel than to other steel grades.
Equivalent material: EN S355K2G2W, EN S355K2W
EN 10025-5 Grade S355K2W general
| Property |
Temperature |
Value |
Comment |
| Charpy impact energy |
-20 °C |
Charpy impact energy of 40 J |
min. | for thickness 5-80 mm | Transverse |
| Elongation |
- |
Elongation of 18 % |
min. A5.65√So | for thickness 63-80 mm | Transverse |
| - |
- |
Elongation of 19 % |
min. A5.65√So | for thickness 40-63 mm | Transverse |
| - |
- |
Elongation of 20 % |
min. A5.65√So | for thickness 63-80 mm |
| - |
- |
Elongation of 20 % |
min. A5.65√So | for thickness 5-40 mm | Transverse |
| - |
- |
Elongation of 21 % |
min. A5.65√So | for thickness 40-63 mm |
| - |
- |
Elongation of 22 % |
min. A5.65√So | for thickness 5-40 mm |
| Tensile strength |
- |
Tensile strength of 470 - 630 MPa |
for thickness 5-80 mm | Transverse |
| Yield strength |
- |
Yield strength of 325 MPa |
min. | for thickness 63-80 mm | Transverse |
| - |
- |
Yield strength of 335 MPa |
min. | for thickness 40-63 mm | Transverse |
| - |
- |
Yield strength of 345 MPa |
min. | for thickness 16-40 mm | Transverse |
| - |
- |
Yield strength of 355 MPa |
min. | for thickness 5-16 mm | Transverse |
EN 10025-5 Grade S355K2W thermal
| Property |
- |
- |
| Application areas |
| Delivery condtion |
| Other |
EN 10025-5 Grade S355K2W mechanical
| Property |
Value |
Comment |
| Carbon |
Carbon of 0.16 % |
max. |
| Chromium |
Chromium of 0.4 - 0.8 % |
- |
| Copper |
Copper of 0.25 - 0.55 % |
- |
| Manganese |
Manganese of 0.5 - 1.5 % |
- |
| Molybdenum |
Molybdenum of 0.3 % |
max. |
| Nickel |
Nickel of 0.65 % |
max. |
| Phosphorus |
Phosphorus of 0.03 % |
max. |
| Silicon |
Silicon of 0.5 % |
max. |
| Sulfur |
Sulfur of 0.03 % |
max. |
| Zirconium |
Zirconium of 0.15 % |
max. |
