Spring material
Thread Content
When selecting spring materials, what is the difference between 304 and 17-7PH? For example, why are 17-7PH springs used for the valves in process compressors instead of 304?
304 is heat-resistant, has good workability, and high toughness； 17-7ph is a high-strength material with excellent elasticity and fatigue resistance, making it the ideal material for spring sheets.
Correct, supported: victory:
Having seen the drawings of air valves from domestic and foreign manufacturers, the spring material used is basically 17-7PH.