Common Metal Materials for Spring Washers

1. Carbon Steel
65Mn spring steel (also known as 65 Manganese) is a widely used material in the manufacture of spring washers, alongside other grades such as 70# carbon steel. These carbon steel materials are relatively inexpensive and can adequately meet operational requirements in general mechanical equipment. For instance, they are suitable for use in standard mechanical connections where strength requirements are not exceptionally high and the operating environment is relatively benign (e.g., dry and free from strong corrosive agents). 65Mn spring steel possesses excellent elasticity and strength, making it suitable for manufacturing flat leaf springs and round helical spring washers with relatively small cross-sections-components that are designed to withstand vibration in machinery such as automobiles, tractors, and trains. Similarly, 70# carbon steel provides sufficient strength to ensure the basic functionality of spring washers; it can withstand specific levels of pressure and stress without undergoing excessive deformation and is frequently utilized in general mechanical assembly applications.

 

2. Stainless Steel
201 stainless steel is a viable option for applications where a certain degree of corrosion resistance is required, yet cost control remains a priority. However, its corrosion resistance is relatively inferior to that of the 304 and 316 grades.
304 Stainless Steel: Possessing excellent corrosion resistance, this material is widely employed in the connections of various types of equipment. For example, spring washers made from 304 stainless steel are commonly used in kitchen appliances and household fixtures, as the material can maintain its performance over extended periods in mildly corrosive environments (such as humid indoor settings).
316 Stainless Steel: This grade demonstrates superior corrosion resistance, offering enhanced resilience against strong corrosive environments-including exposure to certain chemical substances and seawater. It is frequently utilized in medical devices and marine-related equipment to ensure the long-term functionality and service life of spring washers. Compared to 304 stainless steel, 316 stainless steel contains molybdenum, an element that significantly boosts its resistance to corrosive agents such as chloride ions.

 

3. Titanium Alloys
Titanium alloys are distinguished by their exceptional mechanical properties and corrosion resistance. They combine high strength with low weight and exhibit excellent heat resistance. Consequently, these materials are typically reserved for high-end mechanical equipment and aerospace applications; for instance, titanium alloys are utilized in the construction of spring washers within aircraft engines-components that demand a combination of high precision, high strength, and superior corrosion resistance. Due to the high cost of titanium alloys, they are not used in general applications where cost sensitivity is a significant factor.