China Industrial Alumina Ceramic Crucible for NTC/PTC/Li-ion Battery Powder Firing 99% Al2O3 Ceramic Crucible manufacturers and suppliers

Industrial Alumina Ceramic Crucible for NTC/PTC/Li-ion Battery Powder Firing 99% Al2O3 Ceramic Crucible

Short Description:

Optimal Firing Container for : Phosphor Powder，Rare Earth Materials，Precious Metal Materials，High/Medium/Low Ceramic Capacitors NTC/PTC Piezoelectric Ceramics，Lithium Cobaltate (LiCoO₂) & Lithium Manganate (LiMn₂O₄) Powders.

Brand: Bestn

Origin: China

Size : customer

Type: Ceramic Tubes

Bulk density: 2.25-2.35g/cm3

Water absorption: ≤1

MOQ: 100pcs

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Specification

Also known as a corundum crucible, the alumina crucible is characterized by its high alumina content, typically ranging from 95% to 99%. It can operate continuously at 1650°C, with a maximum service temperature of up to 1800°C. Our company specializes in manufacturing custom-sized crucibles to meet specific non-standard requirements.

Alumina Crucible Cylinder Type
Top Dia (mm)	Bottom Dia(mm)	Height (mm)	Thickness (mm)	Volume (ml)
50-100	50-100	35-116	3	5-5000
Alumina Crucible Rectangle Type
Length (mm)	Width (mm)	Height (mm)	Thickness (mm)	Volume (ml)
60-200	30-150	15-190	3	5-5000
Note:Customized sizes are available upon request.

Ceramic Properties	Alumina Ceramic Semiconductor
Main Composition	Al2O3≥99%	Al2O3≥95%	ZrO2≥94%
Density (g/cm³)	3.85	3.6	5.9
Water Absorption (%)	0	0	0
Sintering Temperature (°C)	1690	1670	1650
Hardness (HV)	1700	1600	1400
Flexural Strength 4pt (MPa)	>3500	>2900	>11000
Compressive Strength (Kgf/cm²)	30000	25000	25000
Maximum Operating Temperature (°C)	1500	1400	1600
Thermal Expansion Coefficient (10⁻⁶/°C) (0-1000°C)	8	7.8	10
Thermal Shock Resistance T (°C)	200	220	350
Thermal Conductivity (W/m·K)	31	22	3
Volume Resistivity (Ω·cm)	>10¹²	>10¹²	>10¹²
Dielectric Strength (KV/mm)	18	16	15
Dielectric Constant (1MHz)	9.2-10.5	9.0-10	12.5
Applications	Electronics, automotive, metallurgy, steel, chemical industries, etc.