Celebrex arthritis drug safety study surprises heart experts. Back in 2004, a popular arthritis drug called Vioxx was pulled off the market when studies showed daily long-term use could increase the risk of heart attack, stroke and death.
How Steel is Made: a Brief Summary of a Blast Furnace: There are two types of metals, ferrous & non-ferrous. Ferrous comes from, or contains iron, while Non-Ferrous does not contain iron. Some examples of ferrous metals would be mild steel, cast iron, high strength steel, and tool steels. Examples of non-ferrous metals would be copper, aluminum, magnesium, titanium, etc. To make steel, iron ore is first mined from the ground. It is then smelted in blast furnaces where the impurities are removed and carbon is added.
If you've ever seen steel, a popular material for construction and consumer products, it certainly looks and feels like a hard metal. But looks can be deceiving. In fact, the difference between metal and steel is highly overlooked in a world that often thinks of steel as a type of metal.Even in a professional capacity, these terms are used together. Steel is commonly used as a builÂ­ding material and metal buildings, as they are referred to, are often made of steel.ome common metals are titanium, copper and nickel. Steel, on the other hand, is an alloy of iron with varying amounts of carbon content (from 0.5 to 1.5 percent) [source: Merriam-Webster ]. Steel, being an alloy and therefore not a pure element, is not technically a metal but a variation on one instead.