One person familiar with the situation said Germany's ailing ThyssenKrupp Group was in talks with its international counterparts to merge its loss making A709Gr.50W steel plate steel business. The talks will be announced Monday as part of a strategic reform that could include closing or selling assets. Previously, ThyssenKrupp steel Europe, Germany's largest steelmaker, announced a loss in the first half of the group three point seven two 100 million euros four point zero two Billion US dollars). ThyssenKrupp has continued to advocate the benefits of A709Gr.50W steel plate steel integration since it abandoned its joint venture with Tata Steel a year ago to sell its precious elevator division.
The composition characteristics of low alloy high strength steel are low carbon ≤0.20%, low alloy, and total alloying elements is less than 3%. The low carbon content is to meet the process performance requirements of A709Gr.50W steel plate, low alloy high strength steel for engineering structural parts such as plasticity, toughness, weldability and cold deformation; adding a small amount of alloying elements (mainly Mn) to achieve the purpose of improving mechanical properties. Mn not only has a significant strengthening effect on ferrite, it can also reduce the cold brittle temperature of steel, increase the amount of pearlite in the steel, and further improve the strength.
Q/BQB 310-2009 SAPH310 automotive structural steel technical dataChemical composition (melting analysis)%Carbon : ≤0.10, Silicon : ≤0.05, Manganese: ≤0.50, Phosphorus: ≤0.035, Sulfur: ≤0.035, Aluminum: ≥0.01Mechanical propertiesYield strength MPa: ≥185Tensile strength MPa: ≥310Elongation: ≥35
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