The process of making steel almost always involves the use of recycled milled post-consumer product. Steel is mostly made of iron, but also contains allloy, and carbon is a type of alloy commonly used in making steel. Luckily, the practice of making steel has involved recycling for a long time, and recycled steel can even be re-recycled.
No, steel is an alloy consisting mostly of iron, with a carbon content between 0.2% and 2.1% by weight, depending on the grade. Carbon is the most cost-effective alloying material for iron, but various other alloying elements are used such as manganese, chromium, vanadium, and tungsten. When iron is smelted from its ore by commercial processes, it contains more carbon than is desirable. To become steel, it must be melted and reprocessed to reduce the carbon to the correct amount, at which point other elements can be added. This liquid is then continuously cast into long slabs or cast into ingots.
Good question, cristofer. There are two main ways of modern steelmaking, using a basic oxygen furnace, or an electric arc furnace. The basic oxygen method typically uses between 25 to 35% recycled steel, whereas the electric arc method uses almost 100% recycled steel!
Hope this helps!
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