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Aluminum Silicate

Last updated: July 19, 2024

What Does Aluminum Silicate Mean?

Aluminum silicate refers to a chemical compound with the formula 3Al2O3 · 2SiO2. It occurs as a mineral and is composed of aluminum, oxygen and silicon. The compound is often used to manufacture corrosion preventative coatings.

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Corrosionpedia Explains Aluminum Silicate

Aluminum silicate has a hardness of 1-2 on the Mohs scale of mineral hardness and a 1.56 refractive index.

The following vital properties must always be considered before incorporating aluminum silicate on any metallic surface to be protected against corrosion. Several of these parameters may negatively affect corrosion reduction efforts due to interactions in some electrochemical environments.

Density (mg/m3) 2.8 to 2.9
Luster Vitreous
Hegman Grind, Min. ~ 4-6
G.E. brightness % 82 – 92
Color White, red, brown, orange and green
pH ~ 3.8 – 8.0
Specific Gravity ~ 2.58 – 3.15
Crystallography Orthorhombic
Related Questions
Does aluminum rust?
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