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Ensinger PEI

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Dental Amalgam
Categories: Metal; Nonferrous Metal; Precious Metal

Material Notes: This silvery-white alloy is used frequently as dental fillings. It is composed mainly of intermetallics Ag3Sn and Ag2Hg3 with Sn7Hg or Cu6Sn5 (depending on Cu content).

Key Words: Fillings; Mercury Alloys
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Physical PropertiesOriginal ValueComments
Density 11.0 g/ccTypical
 
Mechanical PropertiesOriginal ValueComments
Hardness, Knoop 90
Tensile Strength, Ultimate 30.0 - 60.0 MPaWide range is possible
Tensile Modulus 60.0 GPa
Compressive Yield Strength 275 - 345 MPaafter five days
 
Thermal PropertiesOriginal ValueComments
CTE, linear 22.0 - 28.0 µm/m-°C
@Temperature 37.0 °C
near body temperature.
Shrinkage -0.200 - 0.20 %
@Temperature 23.0 °C
During Hardening
 
Component Elements PropertiesOriginal ValueComments
Copper, Cu 2.0 - 15 %
Mercury, Hg 40 - 50 %
Silver, Ag 20 - 35 %
Tin, Sn 12 - 15 %
Zinc, Zn <= 1.0 %

References for this datasheet.

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