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A C is 70% to 79%; A D is 60% to 69%; and finally; F is 59% and below – and it's not a passing grade; Above, you can find the standard grading system for US schools and universities. However, the grading may vary among schools, classes, and teachers. ... Yes, a score of 75 out of 80 is an A according to the default grading scale. …











FeSi : CAS no. : EC no. 617-088-7: Description Ferrosilicon (FeSi) is an alloy of silicon and iron. The production is based on quartz, iron ore, coal, coke and biocarbon. The alloy is mainly used as a deoxidant and an alloying element in the production of steel and cast iron. FeSi increases strength, hardness, temperateness and corrosion




















