Corten steel, also called Weather Resistant steel or Atmospheric Corrosion Resistant steel, it is known as a low cost and highly effective material.

Corten steel is classed as being a "self -protecting "steel for its "patina "which results from protective surface oxidation and develops during exposure to the atmosphere; The oxide layer that gives the steel its distinctive appearance and enhances weather resistant capabilities compared to standard steels, also the improved corrosion performance can lead to improved service life. 

The charcteristic for this steel: The surface will be rusted after somedays, but need to take some time around 3 Month; Also if you want it to be rusted very fast based on building requirement, we can do the rust processing too in our workshop,very good finish and the color can keep 3-5 years;

ASTM A242 Corten Steel Front end Top Side Panel Sheet    

Specification as follows:

 

Common Grade Composition and Mechanical property as follows:

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Also we can do the rust finish on the surface, and some introduction as follows:

Specification
Thicnkess: 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.2mm, 1.5mm, 1.6mm, 2.0mmm, 2.5mm, 3.0mm, 4.0mm, 5.0mm, 6.0mm, 8.0mm, 10mm etc.
Width: 1000-2000mm
Length: 2000mm, 2500mm, 3000mm....6000mm or as requirement

Rust finish process:
Step 1. The steel surface by shot peening or pickling to remove the surface scale.
Step 2. Preparation of weathering steel surface treatment agent, the weight percentage of 0.1% ~ 3% NaCl, 0.3% ~ 3% FeSO4 , 0.1% ~ 3% CuSO4 and 0.3% ~ 3% NaHSO3 mixed with water and poured into the barrel, Uniform until the solution was sky blue.
Step 3. Will be equipped with a good surface treatment agent into the sprayer, spray evenly on the steel surface for 3-5 seconds to the surface of the steel into a brown, spray finished once, so that the steel surface dry naturally, this time with suction absorbent material steel structure The lower part of the residual liquid, to ensure that the upper and lower drying time consistent until the steel structure after drying, repeat the spraying and drying process 2 times to ensure that the corten steel surface to generate a uniform and dense rust layer.
Due to the high corrosion resistance of corten steel sheets, it normally takes from 1 to 2 years from a completely new steel sheet to the formation of a stable, dense, rust-red protective layer (50-100mic thick) in natural environments. For some dry areas May be even longer.If you want to generate a simple uniform rusty yellow, it also takes about 1 month.In the process, the components of the color will occur uncontrollably, from blue and black to orange red, then rusty red, the last reddish brown Dramatic, uneven change process.

ASTM A242 Corten Steel Front end Top Side Panel Sheet    

Rust finish photos for reference: 







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ASTM A242 Corten Steel Front end Top Side Panel Sheet    



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