EN10025-5 S355J0W Corten Steel Plates
S355J0W is a European standard atmospheric corrosion resistant steel, belongs to the weathering steel plate, is in the ordinary steel by adding a certain amount of alloying elements made of a low alloy steel. Weathering steel atmospheric corrosion resistance for ordinary carbon steel 2-8 times, with good mechanical properties, welding properties, and the longer the time, the more obvious corrosion resistance.
EN10025 S355JOW corten steel sheet metal chemical composition
| C | Si | Mn | P | S | Cr | N | Cu | CEV |
| max 0.16 | max 0.5 | 0.5 - 1.5 | max 0.035 | max 0.035 | 0.4 - 0.8 | max 0.009 | 0.25 - 0.55 | max 0.52 |
EN10025 S355JOW corten steel sheets mechanical property
| Nominal thickness (mm): | to 3 | 3 - 100 | 100 - 150 |
| Rm - Tensile strength (MPa) | 510-680 | 470-630 | 450-600 |
| Nominal thickness (mm): | to 16 | 16 - 40 | 40 - 63 | 63 - 80 | 80 - 100 | 100 - 150 |
| ReH - Minimum yield strength (MPa) | 355 | 345 | 335 | 325 | 315 | 295 |
| KV - Impact energy (J) longitud., | -20° 27 |
0° 27 |
| Nominal thickness (mm): | 1.5 - 2 | 2 - 2.5 | 2.5 - 3 |
| A - Min. elongation Lo = 80 mm (%) | 16 | 17 | 18 |
| Nominal thickness (mm): | 3 - 40 | 40 - 63 | 63 - 100 | 100 - 150 |
| A - Min. elongation Lo = 5,65 √ So (%) | 22 | 21 | 20 | 18 |
The main principle of S355JOW weathering steel
Add a certain amount of alloying elements in steel, such as P, Cu, Cr, Ni, Mo, in order to increase resistance to air corrosion, under the influence of climatic conditions, in the base metal in the generation of an automatic protection of oxides, so that the surface of the steel to form a dense and strong adhesion to the protective film, impede the spread of corrosion and the development of the rust inward to protect the rust layer of the substrate below to slow down the rate of its corrosion.
In the rust layer and the substrate between the formation of about 50μm ~ 100μm thick amorphous spinel-type oxide layer dense and good adhesion with the base metal, due to the existence of this layer of dense oxide film, preventing the atmospheric oxygen and water to the steel substrate penetration, slowing down the deep development of rusted steel materials, greatly improving the atmospheric corrosion resistance of steel materials.
Weathering steel can be thinning use, exposed use or simplify the coating, and make the system of corrosion resistance life extension, labor saving and consumption reduction, upgrading of the steel, but also a modern metallurgy can be integrated into the new mechanism, new technology, new technology and make its sustainable development and innovation of the steel.
EN10025 S355JOW corten sheets product image
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