Metal ceramic framework designs: Characteristic physical properties

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

-modulus of elasticity: the stiffness of an alloy. It is the ratio of stress to strain produced by the stresses within the elastic region of the alloy.

Elasticity: the property of having a constant ratio of stress to strain.

Elongation: the amount of extension or deformation the alloy exhibits at the point of fracture (% of original length). It’s measure of ductility.

Ductility: the ability of a material to be plastically strained in tension.

Hardness: resistance of a material to indentation or penetration.

Ultimate tensile strength (UTS): the maximum stress that can be sustained by an alloy without fracturing.

Yield strength: a measure of the alloy’s resistance to plastic deformation. This is more important than UTS, because once the alloy deforms, it’s useless.

Category: Prosthodontics Notes



Post a Comment