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Steel has been part of some of the greatest achievements in history: It was the "iron horse" and steel rails that helped carve a nation out of the frontier. Steel is the backbone of bridges, the skeleton of skyscrapers, the framework for automobiles.

And in the 21st century, it's still revolutionizing the way we live. It is the high-strength, lighter-than-plastic frames for eyeglasses; it's the stronger, more durable frame in housing; it's the high-tech alloy used in the Space Shuttle's solid fuel rocket motor cases; and it's the precise surgical instruments used in hospital operating rooms around the world.

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How Steel Is Made

Steel Glossary

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