Tempered Spring Steel

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Spring steel is a name given to a wide range of steels used in the manufacture of springs, prominently in automotive and industrial suspension applications. These steels are generally low-alloy Manganese, medium-carbon steel or high-carbon steel with a very high yield strength. This allows objects made of spring steel to return to their original shape despite significant deflection or twisting.

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Grades

Many grades of steel can be hardened and tempered to suit application as a spring; however, some steels exhibit more desirable characteristics for spring applications.

Tempered Spring Steel Video

Applications

• Applications include piano wire (also known as music wire) such as ASTM A228 (0.80-0.95% carbon), spring clamps, antennas, springs, and vehicle coil springs, leaf springs, and s-tines.
• Spring steel is also commonly used in the manufacture of metal swords for stage combat due to its resistance to bending, snapping or shattering.
• Spring steel is one of the most popular materials used in the fabrication of lockpicks due to its pliability and resilience.
• Tubular spring steel is used in the landing gear of some small aircraft due to its ability to absorb the impact of landing.
• It is also commonly used in the making of knives, especially for the Nepalese kukri.
• It is used in binder clips.

Source of the article : Wikipedia