Corten A steel

Corten A Weathering Steel
ASTM Corten A 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.

The top layer of the material 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.

Corten A - Grades and Equivalents
The grades and equivalents of Corten A are provided in the table below.

Corten	EN 10025-5:2004
Corten A	S355 J0WP

 

Chemical Components

Grade	C	Si	Mn	P	S	Cu	Ni	Cr	V	N
Corten-A	0.12	0.25-0.75	0.20-0.50	0.07-0.15	0.03	0.25-0.55	0.65	0.50-1.25
Corten-B	0.16	0.30-0.50	0.80-1.25	0.03	0.03	0.25-0.40	0.4	0.40-0.65	0.02-0.10

Corten A - Mechanical Properties
The mechanical properties of Corten A are outlined in the following table.

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

Corten A Steel Plate Specification :
Thickness : 0.6 mm to 100mm
Width : 750mm to 4000mm
Length : upto 12,000mm

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