cobalt chromium

Question 1

What are the advantages of CCR

Answer 1

corrosion resistant
high melting point
low density
relatively low cost

Question 2

composition of CCR

Answer 2

cobalt (35-65%)- for strength, hardness, rigidity
chromium (25-30%)- for corrosion resistant
nickel if present is for hardener
molybdenum, carbon, tungsten( small amount, hardening and strengthening elements)
manganese and silicon( enhance fluidity, small amount)

Question 3

what are the requirement of connectors

Answer 3

high modulus of elasticity
- rigid in thin sections

high proportional limit
- so that permanent deformation is unlikely