Coiling Taper Springs is a type of spring with a conical or tapered shape. The spring rate refers to the amount of force required to compress or extend the spring by a certain amount. These springs are designed to provide a varying spring rate based on the changing diameter of the coil. They find applications in various industries, including automotive, aerospace, industrial equipment, and more. They are used in situations where a variable or progressive spring rate is beneficial. Coiling Taper Springs can be made from various materials depending on the application requirements. Common materials include high-carbon steel, stainless steel, and other alloys.