Corten steel sheets/plates /coils

CortenA

Grede:CortenA
Type :steel plate
Standard :ASTM
Steel Plate Thickness: 2-460mm , Steel Plate Width: 1500-3200mm, Length:6000-12000mm
Place of Origin: Henan China (Mainland)
Brand Name: Bebon

CortenA Steel Description
ASTM CortenA steel grade is a hot rolled products of structural steels in technical delivery conditions with improved atmospheric corrosion resistance.The steel grade CortenA is according to ASTM standard which with the yield strength of 355MPa and the tensile strength of 470-630MPa.Corten-A steel was first used in buildings in 1958 because it has anti-corrosion properties. Then Corten-A especially in China and Japan was widely used for bridges, trains, cars, trucks and industrial facilities and so on.

CortenA Steel Delivery state
Hot Rolled, Cold Rolled, Normalized, Quenched, Tempering, Thermal Mechanical Control Process (TMCP), Electroslag Remelting Technical, HIC test.

CortenA Steel Application

COR-TEN A is a strip mill product. ASTM CortenA is mainly used for the manufacture of container, rolling stock, oil rigs, harbor construction, oil platforms and other structural parts containing hydrogen sulfide corrosive media in petrochemical equipment.The chemical composition of COR-TEN A has been designed to provide a relative resistance against atmospheric corrosion, in particular for urban environments. It can therefore be used even without painting; in this case a thin layer of stable oxides will be formed, thus preventing further corrosion inside.

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 facials.Corten A is not recommended in heavy load bearing applications – in this case Corten B or S355J2W should be considered.

The top layer of Corten A reacts with atmospheric elements to form a rust coloured protective layer which not only makes the steel virtually maintenance free but also provides a pleasing and consistent finish.

The mechanical characteristics and the resistance against atmospheric corrosion make this steel the best product for the fabrication of agricultural vehicles and railway wagons, bridges, water pipes, fans, chimneys and boilers and outdoor sculptures.



CortenA steel Chemical Composition Analysis

Grades C
max		 Si Mn. P S
max		 Cr Ni Cu Nb+V+Ti
CortenA 0.12 0.25-0.75 0.20-0.50 0.07-
0.15		 0.030 0.50-1.25 0.65 0.25-0.55 -

In order to obtain fine grain structure a sufficient amount of nitrogen absorbing elements is added (e.g. ≥0.02% Al)

CortenA steel Mechanical Properties

At room temperature for plates ≥3mm in thickness (transverse test specimans, according to EN 10002). Requirements to hot rolled plates ≤3mm in thickness according to EN 10025-5.

　
　
Grade		 Permissible yield point
ratio		 Yield Strength
MPa(min)		 Tensile Strength
MPa		 Elongation
% (min)		 Bend
Corten
A		 - 355 470-630

20

 1t


1 Mpa = 1N/mm2 These characteristics are guaranteed in the longitudinal direction; increases by approximately 20 N/mm2 in the transverse direction.

In case of cold rolled material the yield point is min. 310 Mpa and the tensile strength min. 445 MPa. Furthermore cold rolled sheets ≤3mm in thickness made of steel grade COR-TEN A-F for increased demand to the cold formability is available


CortenB

 

Grede:CortenB

Type :steel plate

Standard :ASTM

Steel Plate Thickness: 2-460mm , Steel Plate Width: 1500-3200mm, Length:6000-12000mm

Place of Origin: Henan China (Mainland)

Brand Name: Bebon


Corten B Steel Description

ASTM Corten B steel grade is a hot rolled products of structural steels in technical delivery conditions with improved atmospheric corrosion resistance.The steel grade Corten B is according to ASTM standard which with the yield strength of 355MPa and 345MPa which is based on the different thickness.The anti-corrosive properties of Corten B steel are better than those of other structural steels in many applications. Corten B steel is self-protecting. The rust layer on the surface becomes a tight oxide layer that slows down the progress of corrosion. Corten B steel is an economical, long-lasting and fully recyclable material.

Corten B Steel Delivery state

Hot Rolled, Cold Rolled, Normalized, Quenched, Tempering, Thermal Mechanical Control Process (TMCP), Electroslag Remelting Technical, HIC test.

Corten B Steel Application

ASTM CortenB is used for various types of welded, bolted and riveted constructions e.g. steel frame structures, building cladding, metal sculptures (Angel of the North), chimneys, bridges, tanks and containers, exhaust systems, vehicles and equipment constructions.

As it ages it takes on a orange/brown appearance dependent on the salt level of the atmosphere, over time it forms a protective layer or skin against the elements. It was originally developed to eliminate the requirement of painting surface finishes

In most circumstances, CortenB steel plate and sheet for steel atmospheric corrosion resistance is better than carbon structural steel plate and sheet containing copper or not in essence. When fully exposed to the atmosphere, Corten B can be widely used in many cases under bare (uncoated) condition

STM Corten B steel chemical composition by [%]

Grades C
max		 Si Mn. P S
max		 Cr Ni Cu V
Corten
B		 0.16 0.30-0.50 0.80-1.25 0.030 0.030 0.40-0.65 0.40 0.25-0.40 0.02-
0.10

In order to obtain fine grain structure a sufficient amount of nitrogen absorbing elements is added (e.g. ≥0.02% Al)

ASTM CortenB steel Mechanical properties

　
Grade		 Thickness
(mm)		 Yield Strength
MPa(min)		 Tensile Strength MPa Elongation
% (min)
Corten
B		 ≤16 355 470-630

      20
>16≤50 345

1 Mpa = 1N/mm2 The impact energy is determined on ISO-V longitudinal test specimens at a temperature of - 20°C as an average of three tests. For product thicknesses ≥10mm the average value is at least 27 J. For thicknesses between 10mm and 6mm, the minimum impact value is reduced proportionally to the specimen width (product thickness).