Is Hooke's law valid for all materials?

Related questions

1. Why is there a negative sign in F =- Ks?
2. Is it f Kx or F =- KX?
3. What is stiffness factor?
4. What is E in Hooke's Law?
5. What is the unit of K in Hooke's Law?
6. What is F KX in spring?
7. What is E in mechanics of materials?
8. How is EPE calculated?
9. What is Poisson's ratio used for?
10. What is stiffness constant?

Tags

1. #beyond
2. #itself
3. #stress
4. #valid
5. #extension
6. #force
7. #proportional
8. #behaviour
9. #hooke
10. #lasts
11. #limit
12. #longer
13. #proportionality
14. #elastic
15. #definition
16. #however
17. #entirely
18. #where
19. #strain
20. #temporary
21. #deformations