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Allah Almighty has strenghtened His slaves by sending down Iron to them. Iron has many benefits for humanity, including weapons for battle. Iron is a crucial building block of steel and is even involved in nourishing plants and helping carry oxygen in our blood. Iron is a brittle, hard substance, classified as a metal in Group 8 on the Periodic Table of the Elements. The most abundant of all metals, its pure form rapidly corrodes from exposure to moist air and high temperatures. Iron is also the fourth most common element in Earth's crust by weight and much of Earth's core is thought to be composed of iron.
Ninety percent of all metal that is refined these days is iron, according to the Royal Society of Chemistry. Most of it is used to make steel — an alloy of iron and carbon — which is in turn used in manufacturing and civil engineering.