K2 Al2 Si2 O8

ceramic

· K2 Al2 Si2 O8

K2Al2Si2O8 is a potassium aluminosilicate ceramic compound belonging to the feldspar family, characterized by a framework silicate structure common in natural minerals and engineered ceramics. This material is primarily encountered in advanced ceramic applications, glass-ceramics, and refractory systems where thermal stability and moderate mechanical strength are required; it is valued in insulators, kiln furniture, and whiteware formulations due to its low thermal expansion and chemical inertness. Engineers select potassium aluminosilicates when designing for thermal cycling resistance, high-temperature service, or where alkali-containing phases can be tolerated in composite structures.

refractory liningshigh-temperature insulatorsglass-ceramic matriceskiln furniture and saggersceramic whitewarethermal barrier coatings

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	66.34	GPa	—
Shear Modulus(G)	27.53	GPa	—

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	4.750	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-2.977	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.

K2 Al2 Si2 O8

Mechanical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental