Al8 Si4 O20

ceramic

· Al8 Si4 O20

Al₈Si₄O₂₀ is a mixed aluminum-silicon oxide ceramic belonging to the silicate family, likely a feldspathoid or tectosilicate-related compound. This material combines the thermal stability and hardness characteristic of alumina-silicate systems with intermediate density properties, making it relevant for applications requiring chemical durability and moderate mechanical strength at elevated temperatures. Industrially, aluminum-silicon oxides are used in refractory applications, electrical insulators, and advanced ceramics; this specific stoichiometry may be optimized for thermal shock resistance or specific thermal expansion behavior in engineered ceramic bodies.

refractory liningselectrical insulatorshigh-temperature ceramicsthermal barrier coatingsengineered whitewaresmaterials research

Compliance & Regulations

?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	153.4	GPa	—
Shear Modulus(G)	92.89	GPa	—

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	4.977	eV	—

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-3.160	eV/atom	—

Verified Unverified Low confidence (<80%) Link to source

Regulatory Screening

Environmental

RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.

Al8 Si4 O20

Mechanical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental