Oxide ceramics based on Al2O3

GRANALOX® NM 9212 wear-resistant ceramics, simple components for mechanical and electrical engineering

GRANALOX® NM 9620 F electrical insulating parts, metallizable ceramics, polishable machine components, chemicals- resistant components, ballistic armouring

GRANALOX^® NM 9922 engeneering pramic, constructional elements

Table 1: Specifikation/Properties of oxide ceramics based on Al₂O₃

Trade description			GRANALOX^®NM 9212	GRANALOX^®NM 9620 F	GRANALOX^®NM 9922
Qualification based onČSN EN 60672			C 786	C 795	C 799
	Symbol	Units
Al₂O₃ content		[%]	92	96	99,7
Open porosity	p_a	[%]	0	0	0
Bulk density	ρ_a	[g.cm^-3]	3.4	3.5	3.7
Modulus of elasticity	E	[GPa]	220	280	300
Flexural strength	σ	[MPa]	250	280	300
Mean coefficient of linear thermal expansion	α_30-600	[10^-6 K^-1]	6-8	6-8	7-8
Thermal conductivity	λ_30-100	[Wm^-1K^-1]	14-24	16-28	19-30
Resistance to thermal shock	ΔT	[K]	140	140	140
Relative permittivity	ε_r	-	9	9	9
Volume resistivity in terms of temperature	ρ_v,30	[Ω.m]	10¹²	10¹²	10¹²
Volume resistivity in terms of temperature	ρ_v,200	[Ω.m]	10¹⁰	10¹⁰	10¹⁰
Colour			white	white	white

Oxide ceramics based on Al2O3

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