303Dental MaterialsMedium
All of the following statements about cast cobalt alloy are true EXCEPT________?
AThey have higher ductility than gold alloys
BThey are more rigid than gold alloys
CThey have a lower proportional limit than gold alloys
DThey have a modulus of elasticity twice that of gold alloys
Correct answer
A. They have higher ductility than gold alloys
Explanation
The correct answer is They have higher ductility than gold alloys.