The properties of the material determine the physical and mechanical properties of the spring to a certain extent and affect the design and development of the spring and the improvement of the special requirements.

Spring material selection, to pay attention to the hardenability of steel. Whether or not the spring material section is thoroughly quenched and the degree of quenching have great influence on the quality of the spring.

The electric spring that makes conductor with spring itself or below the condition that humidity changes uncertainly, the spring that works in environment of water, vapor, choose copper and gold material commonly.

Spring working in acid contact and other corrosive media, generally choose stainless acid resistant steel or nickel alloy corrosion resistant materials. The spring used in the general environment medium condition, selects the common spring steel, after making the spring, carries on the rustproof coating or the electroplating method to prevent the corrosion on its surface.

In the requirements of light, insulation, anti - touch, anti - rust and other special purposes of the spring, you can choose reinforced plastic. At present, the more suitable plastic spring is made of epoxy resin, phenolic resin as the matrix, and glass fiber reinforced thermosetting reinforced plastic GFRP. Also can choose anti - vibration rubber manufacture of various types of rubber springs. When selecting the material, consideration should be given to the use, importance, use conditions, processing, heat treatment and economy of the spring. At the same time, also want to refer to the spring used in the existing equipment, choose a more suitable material.