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A spring is a mechanical component with excellent elasticity. As the saying goes, \"Small springs, great utility\" – meaning that although springs are small, their uses are immeasurable. Jingbo Cloud Commerce introduces the following materials used for manufacturing springs. Put simply, stainless steel is steel that does not rust easily; in fact, some types of stainless steel possess both rust resistance and acid resistance (corrosion resistance). The rust resistance and corrosion resistance of stainless steel are due to the formation of a chromium-rich oxide film (passivation film) on its surface. This resistance to rust and corrosion is relative. Tests have shown that in weak media such as air and water, as well as in oxidizing media such as nitric acid, the corrosion resistance of steel increases with the increase in the chromium content in the steel. When the chromium content reaches a certain percentage, there is a dramatic change in the steel’s corrosion resistance – it goes from being prone to rusting to being less prone to it, and from being non-corrosion-resistant to being corrosion-resistant. There are also many types of carbon steel. Carbon steel is the most widely used and earliest adopted basic material in modern industry. Industrial sectors around the world, while striving to increase the production of low-alloy high-strength steel and alloy steel, also pay close attention to improving the quality of carbon steel as well as expanding its variety and range of applications. Currently, the share of carbon steel in the total steel production of various countries remains around 80%. It is widely used not only in construction, bridges, railways, vehicles, ships, and various machinery manufacturing industries, but also extensively in modern petrochemical industries and ocean development sectors. Guitar strings are drawn cold after quenching in a lead bath, possessing very high strength and elastic limit limits, making them a widely used material for small springs. The quality and performance requirements for steel wires are strict; in addition to tensile testing, tests such as torsion, corrosion, and sharp carbon testing are also required. By application, it can be divided into piano wire used for manufacturing various important springs, various high-stress mechanical springs, and valve springs.