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Corten B Weathering Steel

Corten B – a weather resistant steel which is better suited for heavy and load bearing structures.

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Corten B Weathering Steel Description

The material forms its own protective layer when exposed to atmospheric elements. Essentially, the top layer corrodes which then protects the steel beneath it. The natural finish does not normally require any form of maintenance such as painting, which makes the material a highly cost effective alternative to other structural steels.

Painting and maintenance will be required if the structure is is continually wet as a protective layer will not form. An good example is where the base of the structure meets with the ground or is partially submerged.

Corten B Weathering Steel Advantages

Provides natural corrosion resistance
Requires no paint or weatherproofing
Exhibits high strength for heavy or load bearing structures
Requires minimal maintenance
Creates a distinctive, artistic finishcorten steel alloy

Product Parameters

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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