Corten A & Corten B
Corten A: Weather Resistant Steel
Corten A is a weather-resistant steel crafted by blending copper, chromium, and nickel. This material, enriched with phosphorous, excels in gas flue applications and aesthetic facades. However, it's not advisable for heavy load-bearing tasks. In such scenarios, considering Corten B or S355J2W would be prudent.
When exposed to atmospheric elements, the top layer of Corten A undergoes a reaction, forming a protective rust-colored layer. This not only renders the steel virtually maintenance-free but also delivers a pleasing, consistent finish.
Mechanical Properties
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 |
Chemical Composition of Corten A
C | 0.15 |
Si | 0.25/0.75 |
Mn | 0.20/0.50 |
P | 0.07/0.15 |
S | 0.030 |
Al | 0.015/0.06 |
Cu | 0.25/0.55 |
Cr | 0.50/1.25 |
Ni | 0.65 |
Corten B: Ideal for Heavy Load-Bearing Structures
Corten B, another weather-resistant steel, is better suited for heavy and load-bearing structures. When exposed to the elements, it develops its own protective layer. Essentially, the top layer corrodes, shielding the steel underneath. This natural finish eliminates the need for regular maintenance like painting, making it a highly cost-effective alternative to other structural steels.
However, painting and maintenance become necessary if the structure remains continually wet, preventing the formation of a protective layer. An example is the base of a structure meeting the ground or being partially submerged.
For detailed technical specifications, please refer below.
Grades & Equivalents
CORTEN | EN 10025-5:2004 |
---|---|
Corten B | S355J2W |
Mechanical Properties
GRADE | THICKNESS (MM) STRIP PRODUCTS | PLATE PRODUCTS | YIELD STRENGTH REL N/MM² MINIMUM | TENSILE STRENGTH RM N/MM² MINIMUM | ELONGATION A50 % MINIMUM |
---|---|---|---|---|---|
Corten B | 2-13 | 6-40 | 345 | 485 | 19 |
Chemical Composition of Corten B
% | |
---|---|
C | 0.19 |
Si | 0.30/0.65 |
Mn | 0.80/1.25 |
P | 0.035 |
S | 0.030 |
Al | 0.020/0.06 |
V | 0.02/0.10 |
Cu | 0.25/0.40 |
Cr | 0.40/0.65 |
Ni | 0.40 |
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