Compression springs have become one of the most commonly used types of springs due to their multifunctionality and functionality. These springs are designed to resist compressive forces and are ideal for applications that require control of motion, force, or energy storage. A compression spring is a coil spring that compresses under load to provide thrust. They are designed to operate in linear motion, resist compressive forces, and return to their original shape after the load is removed. These spring loads require buffering, load-bearing, or energy absorption in applications.

Compression springs can be made into conical, elliptical, barrel shaped, or almost any other shape. The wire can also be circular, square, or rectangular. This is the most common configuration and can be used for many applications, such as automotive, aerospace, consumer goods, and custom gun springs.
Common examples include shock absorbers, valves, and various mechanical equipment that require precise control of force and motion. Among all types of springs, compression springs are known for their simple, reliable, and versatile shock absorption.

Characteristics of Compression Springs: Materials and Properties
Stainless steel compression springs are very common. Other materials commonly used for compression springs include carbon steel and high tensile strength chromium alloy steel.
Stainless steel compression spring
Corrosion resistance: Stainless steel is known for its excellent corrosion resistance, making it ideal for applications where springs are exposed to moisture, chemicals, or harsh environments. Compared with ordinary carbon steel springs, stainless steel springs are less prone to rust or corrosion, ensuring longer service life and better performance under harsh conditions.
High strength: Stainless steel has excellent mechanical properties, good tensile strength, and durability. This makes stainless steel springs suitable for applications that require load-bearing capacity and resistance to deformation or fatigue.
High temperature resistance: Stainless steel compression springs can maintain mechanical properties and resist deformation at both high and low temperatures. This feature makes it very suitable for use in extreme temperature environments.
Non magnetic: Some grades of stainless steel, such as austenitic stainless steel, are non-magnetic, making them suitable for electronic and electromagnetic applications that require minimal magnetic interference.

Compression spring stress level
Compression springs can be fully compressed without permanent deformation, so no additional operation is required to eliminate deformation. The torsional stress level generated by these springs when fully compressed does not exceed 40% of the minimum tensile strength of the material.
The compression spring can be compressed to a solid state without further permanent deformation after the initial removal of the fixing device. Spring manufacturers can pre-set these springs as additional operations, or users can pre-set these springs before or during assembly operations. These springs, when compressed to solid, have a torsional stress level not exceeding 60% of the minimum tensile strength of the material.
Springs cannot be compressed into solids without further permanent deformation, as deformation cannot be completely eliminated in advance. The torsional stress level of these springs exceeds 60% of the minimum tensile strength of the material. Whenever a spring is designated as such, the spring manufacturer typically informs the user of the maximum allowable spring deflection without deformation.
Please remember: carefully consider the allocated space to ensure that the compression spring can work properly from the beginning, thereby avoiding expensive design changes.