Steel Authority of India Limited’s Bokaro Steel Plant has added another feather in its cap by obtaining the license from Bureau of Indian Standards for IS 11587:1986-Weather Resistant Structural Steel in following gradesWR-Fe 480A (Cr 0.30-1.25, Ni 0.65 max, Cu 0.25-0.55) for general application for weather resistant structural steel WR-Fe 480B (Cr 0.40-0.70, Cu 0.25-0.40, V 0.02-0.10) for low phosphorus micro-alloyed weather resistant structural steelWR-Fe 490H (Cr 0.70-1.00, Cu 0.25-0.55, V 0.10 max) for container manufacturingBokaro Steel Plant regularly produces weather resistant steel SAILCOR in hot and cold rolled coils, plate and sheet form. This is an indigenous equivalent grade for CORTEN Steel and is used by Indian Railway for weather resistant structural & wagons manufacturing.This Indian Standard was adopted by the Indian Standards Institution in 1986. In formulating this standard, assistance has been derived from ISO 4952-1981 Structural steels with improved atmospheric corrosion resistance, issued by the International Organization for Standardization. The atmospheric corrosion resistance of these steels is approximately four times to that of carbon structural steel. Welding is of fundamental importance, and it is pre-supposed that suitable welding procedures will be adopted for welding the steels. These steels are intended for applications where weight saving along with improved atmospheric corrosion resistance is important. This standard covers the requirements for high strength low alloy weather resistant structural steels in the form of plates, strips, sections and bars for welded, riveted or bolted construction requiring atmospheric corrosion resistance.Bokaro Steel Plant is not only the first steel plant in SAIL to receive such a license, but it is also the second steel plant nationwide, following Tata Steel's Jamshedpur Plant to hold a license to produce Corten Steel for the shipping industry.