Disc springs, also known as Belleville washers, are widely used in industrial equipment where high loads and limited installation space are required. However, when operating under high-temperature conditions, selecting the right disc spring material becomes especially important.

1. Why Is High-Temperature Performance Important?

High temperatures can affect the mechanical properties of disc springs. Prolonged exposure may lead to stress relaxation, reduced spring force, permanent deformation and shorter service life.

For applications such as industrial valves, power generation equipment, petrochemical systems and heat exchangers, maintaining a stable spring force is essential for reliable operation.

2. Choosing the Right Material

Material selection is one of the most important factors in high-temperature disc spring design.

Common material options include:

• Inconel 718: Offers excellent strength and good resistance to high-temperature environments.

• Inconel X-750: Provides good oxidation resistance and high-temperature spring performance.

• Nimonic 90: A nickel-based superalloy suitable for demanding high-temperature applications.

The appropriate material depends on operating temperature, applied load, working environment and required service life.

3. How to Reduce Stress Relaxation?

Stress relaxation is a major concern for disc springs operating at elevated temperatures. To improve long-term performance, engineers should consider:

• Selecting materials suitable for the actual operating temperature.

• Optimizing spring geometry and working stress.

• Avoiding excessive compression during operation.

• Evaluating long-term load retention under actual working conditions.

Proper material selection and engineering design help maintain reliable spring performance over time.

4. Applications of High-Temperature Disc Springs

High-temperature disc springs are commonly used in:

• Industrial valves and pipeline systems

• Oil and gas equipment

• Power generation systems

• Heat exchangers

• Aerospace and heavy industrial machinery

High-temperature disc springs require more than simply choosing a heat-resistant material. Material properties, spring geometry, working stress and operating conditions must all be considered together.

Raleigh Spring provides customized disc spring solutions for demanding industrial applications, including special materials and designs for high-temperature environments.

Contact us to discuss your high-temperature disc spring requirements.

Website: www.raleigh-springs.com
Email: Miko.wang@raleigh-spring.com