CORTEN steel is becoming more popular by roll formed product end-users. Its unique look and naturally oxidizing finish make it especially desirable for many architectural projects. Weathering steel, best-known under the trademark COR-TEN® steel, is a group of steel alloys which were developed to obviate the need for painting, and form a stable rust-like appearance if exposed to the weather for several years. Weathering steel has increased resistance to atmospheric corrosion when compared to other steels. COR-TEN® resists the corrosive effects of rain, snow, ice, fog, and other meteorological conditions by forming a coating of dark brown oxidation over the metal, which inhibits deeper penetration and negates the need for painting and costly rust-prevention maintenance over the years. In simple terms the steel is allowed to rust and that rust forms a protective coating that slows the rate of future corrosion.
Associated Chambers of Commerce and Industry of India (Assocham), an apex body of trade and industry, has urged the Union Finance ministry to ban the exports of iron ore from National Mineral Development Corporation (NMDC) as a temporary measure to bridge the shortage of iron ore in the country arising out of closure of 26 mines in Odisha on the basis of a Supreme Court order.
The apex court had ordered closure of these mines as their leases were not renewed and asked the state government to take a decision on their applications for second and subsequent lease renewal within six months. These mines were earlier operating under the deemed renewal clause of the Mineral Concession Rule, 1960.
Assocham fears that the closure of these mines would create acute shortage of iron ore for domestic iron and steel industry and force them to cut capacity utilization. It would lead to rise in finished steel imports in the country, it said.
The apex court order could affect operations of captive mines of leading steel makers Steel Authority of India Ltd (SAIL) and Tata Steel. Seven mines of Tata steel and two mines of SAIL were operating under deemed extensions.
– See more at: http://www.metaljunction.com/news/newsdetail/assocham_urges_centre_to_ban_i#sthash.eNZmEqA7.dpuf
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