Corten A and corten B steel sheets offer good resistance to corrosion. They are characterised by rust-brown colour. When corten A and corten B steel sheets are exposed to the elements, they will form protective layer naturally through oxidisation. The layer will protect corten A and corten B steel sheets against further degradation. But is there any difference between corten A and corten B steel sheets?
Of course yes. Then what is the difference between corten A and corten B steel sheets?
Basically, the chemical composition of corten A and corten B steel sheets are little different as below:
| Grade | C | Si | Mn | P | S | Cu | Ni | Cr | V | N |
| Corten A | 0.12 | 0.25-0.75 | 0.20-0.50 | 0.07-0.15 | 0.03 | 0.25-0.55 | 0.65 | 0.50-1.25 | ||
| 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 |
Besides, the bapplication of corten A and corten B steel sheets are also different. Corten A steel sheets are used for civil engineering structures, chimneys, building cladding, heat exchangers., etc. Corten B steel sheets are used for bridges, cranes and refuse collection trucks, etc.
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