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Investment Material Formulation? D


#1

Does anyone know what the general percent formulation by weight
of investment casting material? >From what I have found it is
silica and plaster of Paris, but I am looking for the percent of
each component.


#2
Does anyone know what the general percent formulation by weight
of investment casting  material? >From what I have found it is
silica and plaster of Paris, but I am looking for the percent of
each component.

Roughly 30% Quartz, 40% Cristobolite, and 30% Calcium Sulfate. Not
thinking of making your own investment are you?

Brett


#3
Does anyone know what the general percent formulation by weight
of investment casting  material? >From what I have found it is
silica and plaster of Paris, but I am looking for the percent of
each component.

Mike, I’m not sure as to the percentages by weight, but I do
believe there is also bone ash or potash present also. Ken


#4
     Does anyone know what the general percent formulation by
weight of investment casting  material? >From what I have found
it is silica and plaster of Paris, but I am looking for the
percent of each component.

It is between 40-50% cristobolite (more noxious version of
silica), most of the rest is calcium sulfate (plaster of paris).
Try hotbot.com and use this search string of words: msds investment
casting cristobolite and see what comes up. Charles

Charles Lewton-Brain/Brain Press
Box 1624, Ste M, Calgary, Alberta, T2P 2L7, Canada
Tel: 403-263-3955 Fax: 403-283-9053 Email: @Charles_Lewton-Brain

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