STEEL COIL LENGTH CALCUTATION

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STAINLESS STEEL - POSCO GRADES

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301 : 17Cr - 7Ni / 301L : 17Cr - 7Ni - LC It has less contents of Cr and Ni compared to that of 304 and is possible to make it possess high strength by further cooling process. And it is mainly used for springs and the train interior and exterior panels. 304 : 18Cr - 8Ni As the kind of steel most widely used, it has the good corrosion resistance, thermal resistance and mechanical properties and is used for home appliances, construction materials and kitchenware, etc. 304L : 18Cr - 9Ni - LC Since it has a low content of carbon compared to that of 304, it has superior inter-granular corrosion resistance and is used for industrial devices, chemical equipments and LNG tanks, etc. 304J1 : 17Cr - 8Ni - 2Cu It has superior formability due to its added Cu content and is used for the materials for deep drawing, such as kitchen sinks and thermos bottles, etc. 316 : 18Cr - 12Ni - 2Mo It has superior corrosion resistance and pitting resistance due to the added Mo and increased Ni content...
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Glossary of CR, GLM, GA, GI, PO Steel Coils

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Cold Rolled Steel(CR): Flat rolled steel products for which the final required thickness has been obtained by rolling base hot rolled pickled substrate at room temperature. This is accomplished by passing the steel through work rolls under tremendous pressure which tightens thickness tolerances, improves shape and surface quality. The initial product comin g through the work rolls is called Cold Rolled Full Hard and from there the coils will need to be Annealed in order to become fully processed Cold Rolled Steel. Galvalume (GLM): Sheet steel is coated with aluminum-zinc alloy using the continuous hot-dipped process similar to the process used to make galvanized steel. The nominal coating composition is 55% aluminum and 45% zinc. Galvalume has superior corrosion resistance which is achieved by the intricate microscopic formation of zinc-rich and aluminum-rich zones within the coating. The aluminum provides long-term durability and zinc the corrosion protection. Galvalume...
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