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Corten A Weather resisting steel

Corten A Weather resisting steel

Grade: A
Type: Weather resisting steel Plate
Standard: ASTM:Corten A
Specification: Thickness:2mm-12mm
Application:Corten-A steel materials most suitable for mountain long span steel bridge design. Ordinary steel rust-proof material shall rely paint, but in the mountains Jian Gu, the use of paint waste of time and a waste of manpower, Corten-A steel bridge is able to completely solve this problem.

 Corten A Weather resisting steel Introduction

Excellent resistance to atmospheric corrosion is due to the steel surface to form a dense layer of rust, the steel substrate and air isolation and effective to stop the rust continues to grow. Special elements contained in COR-TEN, after contact with the atmosphere, forming a layer of oxide film, this layer of solid film makes COR-TEN in isolation, no longer affected by climate change, to achieve the purpose of weathering and corrosion. When Corten-A or ordinary steel materials exposed to the atmosphere, oxygen in contact with water, it will occur chemical reaction to form a dense layer of rust 
Corten A Weather resisting steel Usage
Weathering process is first processed steel material Corten-A surface cleaned, and then sprayed with a solution of weathering (weather coat solution), so some chemical elements Corten-A surface creates an electrochemical reflected, forming a layer of copper, phosphorus, chromium, nickel, iron oxide film. And then sprayed with a layer prepalene, prepalene is a kind of mixture of colors, including low molecular weight acrylic resin (acrylic resin) and the organic solution. Because prepalene highly absorbent and the ability to absorb infrared, it can accelerate the formation of a solid oxide film. After a period of time, that is no longer sufficient to protect the COR-TEN continues to corrosion.
Corten A Weather resisting steel

Corten A Weather resisting steel Typical Chemical Requirements(%)

Type C Mn P S Si Cr Ni Al Cu
Corten A ≤ 0.12 0.20-0.50 0.07-0.15 ≤ 0.030 ≤ 0.25-0.75 0.50-1.25 0.65 0.015-0.06 0.25-0.55

Corten A Weather resisting steel Steel Mechanical Test Requirements(%)

Type Tensile Strength, min Yield Strength, min Elongation in 2 in.or 50mm, min, % Hardness, max
ksi MPa ksi Mpa HB HRB HV
Corten A 70 485 50 345 20     --

Stainless Steel Surface Finishes :

1.No 1 Finish : Used where Heat and corrsoion ressistance is required . Produced by annealing and resealing after hot rolling .

2.No 2D Finish : Dull Cold rolled finish . Used in deep drawn objects which are often polished after fabrication

3.NO 2 B Finish : Bright Cold Rolled Finish . Used in very deep drawn objects .

4.No 3 Finish : Polished finish obtained with abrasives

5.No 4 Finish : Used for kitchen ware , cooking utensils , restaurants and hotel kitchenware , cookware . Obtained with abrasives of 125 mesh and higher

6.NO 7 Finish : Architectural and Ornamental Finish

7.NO 8 Finish : Press plates , small mirrors and reflectors

8.Hairline finish : Ornamental plates , decorative items , name plates , elevators , doors in buildings

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