Heating Al2O3 Aluminium Oxide Ceramic Porous Alumina Plate for Furnace

• Refractoriness (℃): Refractoriness> 2000
• Feature: Long Time Materials
• Type: Refractory Material
• Shape: Brick
• Material: Alumina Block
• Purpose: for High Wear-Resistance
• Specification 2: Six Slots;17*30*11.5
• Specification 3: Four Slots;138*28*11
• Specification 4: Six Holes;170*30*10
• Specification 5: Four Holes;140*28*7
• Specification 6: Four Holes;168*30*12
• Specification 7: Porcelain Tube;12.5*7*62
• Transport Package: Plywood Case or Carton
• Specification: Two Holes; 140*28.5*11
• Trademark: shangtao
• Origin: Shanghai, China
• HS Code: 8547100000
• Production Capacity: 500000 PCS Per Year

Product Description

Ceramic Property Table
Performance		Unit	75 Porcelain	90 Porcelain	95 Porcelain	99 Porcelain	99.7 Porcelain	Zirconia	High-Frequency Porcelain
Bulk Density			>3.2	>3.4	>3.6	3.7	3.7	6	≥2.6
Bending Strength		N/m2*103	1.96	2.25	2.24	>2.24	>2.27	11	1.37
Linear Expansion Coefficient	20-800ºC	x10-6ºC	-	6.3-7.3	6.5-8	6.5-8	6.5-8	9.5	≤8
Dielectric Constant	1MHz		≤9	8.5-9.5	9-10	9-10.5	9-10.5	-	≤7.5
	10GHz		-	-	9-10	9-10.5	-	-	-
Dielectric Loss	1MHz	x10-6	≤10	≤8	≤4	≤2.5	≤1.5	-	≤8
	10GHz	x10-6	-	-	≤10	≤6	-	-	-
Specific Volume Resistance	100ºC	Ω·Cm	>1012	>1012	>1013	>1013	>1014	>1014	>1012
Breakdown Strength		KV/mm	20	15	15	15	-	-	20
Thermal Conductivity	20ºC	W/m·k	-	16.8	25.2	25.2	29.2	3	2.9