5 physical properties of alloys

By Dr.Swathi Pai on Wednesday 10 December 2008 with 0 comments



  1. increased hardness

  2. increased ultimate tensile strength

  3. increased ductility

  4. increased burnishability

  5. they have a melting range vice a melting point

The finer the grain size improves 2 characteristics: 1-strength and 2-elongation

2 typical grain refiners: iridium and ruthenium

Coefficient of thermal expansion: the change in length of a material for a 1C change in temp.

  • COTE is a common characteristic of alloys and porcelain. The CTEs must be compatible and do not have to match. The CTE of the alloy should be slightly greater than that of the porcelain to promote compressive forces on the porcelain vice tensile forces.

Category: Prosthodontics Notes

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