Corten A & Corten B

 TIANJIN TEDA GANGHUA

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

GRADETHICKNESS (MM)
STRIP PRODUCTS		PLATE PRODUCTSYIELD STRENGTH
REL N/MM²
MINIMUM		TENSILE STRENGTH
RM N/MM²
MINIMUM		ELONGATION
A50 %
MINIMUM
Corten A2-126-1234548520

Chemical Composition of Corten A

  
C0.15
Si0.25/0.75
Mn0.20/0.50
P0.07/0.15
S0.030
Al0.015/0.06
Cu0.25/0.55
Cr0.50/1.25
Ni0.65

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

CORTENEN 10025-5:2004
Corten BS355J2W

Mechanical Properties

GRADETHICKNESS (MM)
STRIP PRODUCTS		PLATE PRODUCTSYIELD STRENGTH
REL N/MM²
MINIMUM		TENSILE STRENGTH
RM N/MM²
MINIMUM		ELONGATION
A50 %
MINIMUM
Corten B2-136-4034548519

Chemical Composition of Corten B

 %
C0.19
Si0.30/0.65
Mn0.80/1.25
P0.035
S0.030
Al0.020/0.06
V0.02/0.10
Cu0.25/0.40
Cr0.40/0.65
Ni0.40

Teda Ganghua Metal -17 years

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