Ceramic glass

Due to its extremely low thermal expansion, it is particularly suited for use as thermal window in room heating devices - details see: https://www.buildingsupplieshub.com/ceramic-glass-10065850

Fireplace Mantel Material: Stone

		cast stone	Industrial material
Quantity of wear and tear		0.09	0.03
Rapidly cooled and rapidly heated resistant		Quanlified/ total 36 / 50	38 / 50
Impacting tenacity		1.57	5.5
Bending density(Mpa)		63.7	70.5
Compressing intensity(Mpa)		588	902
Acid and alkali resistant	Vitriol p: 1.84(g/ cm2)	99.0	99.5
	Vitriol solution 20%(m/m)	96.0	98.1
	Sodium hydroxide solution(m/m)	98.0	98.5

Crystallite glass board used to be industrial material

Executive standard:Q/HJN02-2002 consulting standard: JC514.1-93

Name of capabilities	Unite	Guidelines
Heat exchange coefficient(20)	w/m	1.05
Heat expanding coefficient(20-300)	10^-7/	70-80
Fiction coefficient		0.05
Used temperature		350 is not guitable