Corten-B weather-resistant steel plate is another common type of weather-resistant structural steel plate, similar in alloy composition to Corten-A but with a higher carbon content.
Corten-B weather-resistant steel plate exhibits better corrosion resistance and mechanical properties, suitable for more severe atmospheric environments.
The steel grade Corten B conforms to ASTM standards, with yield strengths of 355 MPa and 345 MPa depending on the thickness.
Corten B is available in thickness 2.00-40.00 mm and width up to 1860 mm as coil, slit coil and cut to length and 3300 mm as plate. Length up to 15 meters as cut to length and 13 meters as plate.
Corten B - Grades and Equivalents
| Corten |
EN 10025-5:2004 |
| Corten B |
S355J2W |
Shape
Hot rolled strip: According to EN 10051. Narrower tolerances are available on request.
Hot rolled plate: According to EN 10029
Corten-B Weather Resistant Steel Chemical Components
| Grade | C | Si | Mn | P | S | Cu | Ni | Cr | V | N |
| Corten-B | 0.16 | 0.30-0.50 | 0.80-1.25 | 0.03 | 0.03 | 0.25-0.40 | 0.4 | 0.40-0.65 | 0.02-0.10 |
ASTM Corten B steel Mechanical properties:
At room temperature for plates ≥3mm in thickness (transverse test specimans, according to EN 10002). Requirements to hot rolled plates ≤3mm in thickness according to EN 10025-5.
| Grade |
Thickness (mm) |
Yield Strength MPa(min) |
Tensile Strength MPa |
Elongation % (min) |
| Corten B |
≤16 | 355 | 470-630 | 20 |
| >16≤50 | 345 |
1 Mpa = 1N/mm2
The impact energy is determined on ISO-V longitudinal test specimens at a temperature of - 20°C as an average of three tests. For product thicknesses ≥10mm the average value is at least 27 J. For thicknesses between 10mm and 6mm, the minimum impact value is reduced proportionally to the specimen width (product thickness).
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