製品情報

原産地: 中国(本土)	タイプ: セラミック・チューブ	適用: 耐火物
材料: 陶磁器アルミナ	モデル番号: AV-alumina ceramic tube	銘柄: AV

包装

包装: Standrad export pcking

仕様

99% AL2O3 ceramic tube 1.Processed by hot-pressing 2.No pollution 3.Superior performance

 

Wholesale customize 99% AL2O3 ceramic tube
ng>Productive Technology:ng>

ng>ng>Wearable ceramic is the special corundum ceramic that has been sintered under 1800°C with the main raw material of Al2O3 and flux of rare metal oxide.

Using the high strength organic/inorganic bond to felt  together,

and then grinding to the size as drawing required.

 

ng>Advantages:ng>

  1.Heat-resistant

  2.Good insulation

  3.High strength

  4.Precision Process

  5.Wear-resistant

Alumina Ceramics Properties
	Unit	95%	99%
Density	g/cm3	3.6	3.8
Water absorption	%	<0.4	<0.2
Firing temperature	°C	1600	1800
Hardness	HRA	70	80
Coefficient of linear expansion	*10-6/°C	5.5	5.3
Dielectric constant		9	10.5
Volume resistivity	Ω·cm	—	1013
Breakdown voltage	KV/mm	14	15
Breaking strength	Mpa	250	300

ng>Ceramic product performance parameter listng>
ng>Itemng>	ng>Test Conditionng>	ng>Unit Symbolng>	ng>95% Al2O3 ng>	ng>99% Al2O3 ng>	ng>  ZrO2 ng>	ng>Si3N4  ng>
Bulk Density		g/cm3	≥3.6	≥3.7	≥5.8	≥3.2
Acid Resistance	1:9HCl	mg/cm2	≤7	≤0.7
Alkali Resistance	10% NaOH	mg/cm2	≤0.2	≤0.1
Tensile Strength	25°C	Mpa	≥160	≥190	≥320
Flexural Strength	25°C	Mpa	≥280	≥300	≥1000	≥700
Thermal Shock Resistance	The sample in 800±10°C heating furnace heat preservation 30 minutes, removed in a asbestos board, naturally cooled to room temperature, repeat 10 times, no crack and burst phenomenon.
Coefficient of Linear Expansion	20-500°C	1X 10-6/°C	6.5-7.5	6.5-7.5	9.5-10.5	3.1-3.3
	20-800°C	1X 10-6/°C	6.5-8.5	6.5-8.5	9.5-10.5	3.1-3.3
Young's Modulus of Elasticity		Gpa	≥280	≥280	≥210	≥300
Dielectric Loss	1MHz  20°C	1X 10-4	≤4	≤2.5
Dielectric Constan	1MHz  20°C		9-10	9-10.5
Volume Resistivity	100°C	Ωcm	≥1013	≥1013
	300°C	Ωcm	≥1010	≥1010	≥1010	≥1018
	500°C	Ωcm	≥108	≥109
Dc Breakdown Strength	D.C.	Kv/mm	≥18	≥15
Vickers Hardness		Mpa	1600	1650	1200	1600
Fracture Toughness		MPam½	3.8	4.2	10	7
Poisson's Ratio			0.22	0.25	0.3	0.25