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A spring is a flexible elastic object used to store mechanical energy. Springs are usually made out of hardened steel. Small springs can be wound from pre-hardened stock, while larger ones are made from annealed steel and hardened after fabrication. Some non-ferrous metals are also used including phosphor bronze for parts requiring corrosion resistance and beryllium copper for springs carrying electrical current (because of its low electrical resistance).
Types of spring
The most common types of spring are:
- Coil spring or helical spring - a spring (made by winding a wire around a cylinder) and the conical spring - these are types of torsion spring, because the wire itself is twisted when the spring is compressed or stretched. These are in turn of two types:
- Tension springs are designed to become longer under load. Their turns are normally touching in the unloaded position, and they have a hook, eye or some other means of attachement at each end.
- Compression springs are designed to become shorter when loaded. Their turns are not touching in the unloaded position, and they need no attachment points.
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***** COUCH AND MATTRESS ***** (WELLS BRANCH): FREE COUCH AND QUEEN MATTRESS WITH BOX SPRINGS ALL GOOD CONDITION http://bit.ly/6NkFcX
Los Angeles- Cal King Mattress and Box Springs (Mar Vista / Santa Monica): Chattam & Wells Monet Fluer-De-Lis Model... http://bit.ly/5BjNNl
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Los Angeles- Cal King Mattress and Box Springs (Mar Vista / Santa Monica): Chattam & Wells Monet Fluer-De-Lis Model... http://bit.ly/5BjNNl
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