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This Bird is called the Rosefinch, a kind of beautiful bird. Lots of sculptors liked to make rose-finch sculptures. This sculpture was designed by a Chinese artist, and Corten steel was chosen as its material with a rust finish to exhibit its features.
What is the Cor-ten Steel? Information from Wikipedia
Weathering steel, often referred to by the generalized COR-TEN steel and sometimes written without the hyphen as corten steel, is a group of steel alloys that were developed to eliminate the need for painting, and form a stable rust-like appearance after several years' exposure to weather.
U.S. Steel holds the registered trademark on the name COR-TEN.[1] The name COR-TEN refers to the two distinguishing properties of this type of steel: corrosion resistance and tensile strength.[2] Although USS sold its discrete plate business to International Steel Group (now ArcelorMittal) in 2003,[3] it still sells COR-TEN branded material in a strip-mill plate and sheet forms.
The original COR-TEN received the standard designation A242 (COR-TEN A) from the ASTM International standards group. Newer ASTM grades are A588 (COR-TEN B) and A606 for the thin sheet. All alloys are in common production and use.
The surface oxidation of weathering steel takes six months, but surface treatments can accelerate the oxidation to as little as two hours.[4]
