What are the properties of TB/T 1979 corten steel?

Corten steel, is also called weather resistant steel sheet. As a leading corten steel supplier in China, we can supply TB/T 1979 corten steel 09CuPTiRE-A, 09CuPTiRE-B, 09CuPCrNi-A plates, 05CuPCrNi steel sheets with competitive price.
 

TB/T 1979 corten steel properties

TB/T 1979 low-alloy steel with maintenance rust layer resistant to air erosion and can be used to manufacture steel frame structures such as cars, highway bridges, towers, and shipping containers. Compared with ordinary carbon steel, TB/T 1979 corten steel plate has better corrosion resistance in air. Compared with stainless steel plates, corten steel plates can only be traced out of aluminum alloy elements, such as phosphorus, copper, chromium, nickel, molybdenum, niobium, vanadium, titanium, etc. The total aluminum alloy element production only accounts for a few percent, but Like stainless steel, more than ten percent, so the price is cheaper.
 

The corrosion resistance of TB/T 1979 corten steel

The key reason of TB/T 1979 corten's wide application is the corrosion resistance and good welding characteristics. According to the addition of anti-aging elements, the raw material of steel produces a high-density metal oxide layer with a thickness of about 50-100 μm in the middle of the rust layer and the conventional metal material.
 
The existence of this high-density metal oxide film prevents the oxygen and water in the air from infiltrating into the steel conventionally, alleviating the deep development trend of rust to the steel raw materials, and further improving the air erosion resistance of the steel raw materials. Corten steel has excellent resistance to air corrosion, among which the aluminum alloy element has a decisive effect, including hindering the growth and development of the embroidery layer; delayed embroidery crystals; hindering cracks and defects. Carbon element has poor air erosion resistance to steel. Harm the characteristics of electric welding, cold brittleness and stamping mold. The carbon in the corten steel sheet is controlled below 0.12%. Copper element is resistant to air attack. Copper forms an anti-embroidery barrier on steel conventionally, but copper forms an intergranular effect in the middle of the crystal and is very likely to cause cracks.