Dial disc material selection guide: The material basis for enabling diverse applications

The performance limits of disc springs are primarily determined by their materials. While the national standard GB/T 1972 provides clear material guidelines for conventional applications, selecting appropriate materials becomes crucial for successful design in special operating conditions like corrosion and high-temperature environments. Leveraging extensive material application experience and deep technical expertise in disc spring development, Jiangsu Sunzo Spring offers a systematic analysis of the material world for disc springs.

1、Standards and general materials: meet a wide range of industrial needs

For normal working conditions, the national standard of disc spring recommends the use of balanced spring steel.

Core materials: 60Si2MnA and 50CrVA are widely used main materials with good strength-toughness combination.

Sheet selection: For disc springs with thickness ≤1.25 mm, 65Mn and carbon tool steels (e.g. T7A, T8A) are cost-effective and reliable options.

2、Special materials expansion: to cope with extreme and special working conditions

Material libraries need to be significantly expanded when faced with requirements such as corrosion, high temperatures, or non-magnetism.

Stainless steel series:

Martensite (e.g., 3Cr13): Offers general rust resistance and strength.

Austenitic (e.g. 304,316,301): Excellent corrosion resistance and non-magnetic.

Sedimentation hardening type (e.g., 630/17-4PH): Achieves high strength and corrosion resistance through heat treatment.

High-temperature alloy series: Suitable for high-temperature environments, such as Inconel 718 (GH4169), Inconel X-750 (GH4145), and A-286 (GH2132), which maintain elasticity and strength under operating conditions ranging from several hundred to seven hundred degrees Celsius.

Special alloys: including beryllium bronze (conductive and corrosion-resistant), Monel alloy (acid and alkali corrosion resistant) and high elastic alloy (3J1,3J21), etc., used to meet specific physical and chemical environments such as conductivity and strong corrosion.

3、Unconventional materials: Exploring the boundaries of performance

With technological advancements, disc spring designs have expanded beyond traditional metals. Modern applications now utilize polyurethane, high-performance engineering plastics, composite materials (including glass and carbon fibers), as well as ceramics and shape memory alloys to create disc-shaped elastic components with specialized functions such as vibration damping, electrical insulation, and smart deformation.

At Jiangsu Sunzo , we deeply understand that materials form the foundation of product performance. We not only provide standard spring steel disc springs in accordance with national standards, but also offer professional technical consultation and product solutions for material selection under special working conditions, ensuring your designs remain stable and reliable even in harsh environments.