Stainless Spring Wire (302/304/316/410): Selection by Forming and Service Needs
Stainless spring wire is used in applications where elastic response and corrosion behavior must be balanced. Grade choice should be based on operating environment, forming difficulty, and required fatigue life rather than price per kilogram only.
Grade Selection Logic
- 302/304 families for general spring applications
- 316 families for higher corrosion exposure
- 410 family where specific mechanical and magnetic requirements apply
Specification Essentials
- Wire diameter and tolerance
- Mechanical property target window
- Surface quality and defect limits
- Spool and packaging requirements
Bottom Line
For stainless spring wire, accurate grade and property definition is the key to stable spring forming and long-term reliability.