Corten A is a weather resistant steel created by alloying copper, chromium and nickel. In addition to this,Corten A has added phosphorous which makes the material best suited for gas flue applications and for aesthetic facias The material is not recommended in heavy load bearing applications – in this case Corten B or S355J2W should be considered.
The original CORTEN received the standard designation A 242 ("COR-TEN A") from the ASTM International standards group. Newer ASTM grades are A 588 ("COR-TEN B") and A 606 for thin sheet. All alloys are in common production and use.
Please refer to the technical specifications below...
Grades & Equivalents
| Corten | EN 10025-5:2004 |
| Corten A | S355 J0WP |
Chemical Composition of Corten A
| Grade | C | Si | Mn | P | S | Al | V | Cu | Cr | Ni |
| Corten A | 0.12 | 0.25/0.75 | 0.20/0.50 | 0.07/0.15 | 0.030 | 0.015/0.06 | – | 0.25/0.55 | 0.50/1.25 | 0.65 |
Mechanical Properties of Corten A
| Grade | Thickness (mm) Strip Products |
Plate Products | Yield Strength Rel N/mm² Minimum |
Tensile Strength Rm N/mm² Minimum |
Elongation A50 % Minimum |
| Corten A | 2 – 12 | 6 – 12 | 345 | 485 | 20 |
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