What are the commonly used materials for Spiral Retaining Rings?

Common Materials for Lispring Spiral Retaining Rings:

1. .High Carbon Steel

• 65Mn: Commonly used grade in China
• SAE1070-1090: American grade

1. .Stainless Steel

• SUS304H: Japanese standard designation, equivalent to 06Cr19Ni10 in the Chinese standard
• SUS316: Japanese standard designation, equivalent to 06Cr17Ni12Mo2 in the Chinese standard 
• SUS302: Generally used as grade 302 in European and American countries

1. .Special Alloy Materials

• A-286 (GH2132): Iron-based alloy, resistant to high temperature and corrosion, with a maximum recommended temperature of 538°C and relatively high cost-effectiveness
• Inconel X-750 (GH4145): Nickel-based alloy containing 75% nickel, commonly used in acid-base environments, with a maximum recommended temperature of 538°C
• Inconel X718 (GH4169): Nickel-based alloy with strong corrosion resistance, a maximum recommended temperature of 704°C, and commonly used in high-temperature environments. The wave springs used in our Tianwen-1 mission are made of this material.