Engine valve spring
High-performance valve springs for engines. Design the exact spec and get an instant quote.
Recommended type and material
Engine valves require chrome silicon (CS), which withstands high temperature and cyclic loads without losing force. It's the standard choice for springs running thousands of cycles per minute.
Reference specification
| Type | Compression |
|---|---|
| Material | Chrome silicon |
| Wire diameter | 4 mm |
| Outer diameter | 30 mm |
| Length | 45 mm |
| Spring rate | 35.14 N/mm |
| Max safe load | 561 N |
| Solid height | 24 mm |
| Spring index | 6.5 |
Values calculated for the reference example; adjust everything in the designer.
Things to consider
- Chrome silicon handles heat and high-frequency fatigue.
- Controlled working stress to avoid set/relaxation.
- Grinding and shot peening for maximum service life.
Design your spring for this application
Open the example in the designer, adjust the dimensions and get an instant quote.
Design & quoteFrequently asked questions
Why chrome silicon for valve springs?
It holds mechanical strength at high temperature and resists fatigue over millions of cycles.
Do you offer shot peening?
Yes — it's a recommended finish for high-fatigue springs such as valve springs.