AC0928 Alumina Boats (Aluminium Oxide Boats, Al2O3 Crucibles)

Name: AC0928 Alumina Boats (Aluminium Oxide Boats, Al2O3 Crucibles)
SKU: AC0928
Availability: InStock
Rating: 4.9 (166 reviews)

Catalogue Number	AC0928
Material	Al2O3
Purity	95% 99% 99.7%
Density	3.9 g/cm3

Our alumina boats (also known as aluminium oxide boats or crucibles) are engineered as high-temperature ceramic containers, prized for their exceptional thermal shock resistance, chemical inertness, and mechanical strength. Available in three commercial purity grades, they are designed to perform reliably in demanding applications from laboratory analysis to industrial processing.

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FAQ

What is the difference between 95%, 99%, and 99.7% alumina boats?

The key difference is purity, density, and maximum service temperature. Higher purity (99%, 99.7%) offers better chemical resistance, higher temperature capability (up to 1750°C), lower porosity, and superior mechanical properties, but at a higher cost. 95% alumina is an excellent, cost-effective choice for most applications under 1600°C.

Are your alumina boats suitable for use in a tube furnace?

Yes, absolutely. Their excellent thermal shock resistance makes them perfect for tube furnaces. Ensure the boat dimensions are appropriate for your tube's inner diameter, allowing for proper gas flow.

Can you manufacture custom-sized or shaped alumina boats?

Yes, we operate a full OEM/ODM service. We can manufacture boats to your precise drawings, including non-standard dimensions, special wall thicknesses, or unique features like lids or locating lugs. [Contact us] to discuss your custom requirement.

How should I clean an alumina boat after use?

For most residues, thermal cleaning (heating in air to a high temperature) is effective. Light surface contamination can be removed with a non-abrasive cleaner or by soaking in a suitable acid (e.g., hydrochloric acid) followed by thorough rinsing with deionised water and drying. Avoid mechanical abrasion that could damage the surface.

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Property	Unit	Al95 (95%)	Al99 (99%)	Al997 (99.7%)	Notes
Al₂O₃ Content	%	95	99	99.7
Colour		White	Ivory	Ivory
Flexural Strength	MPa	~360	~380	~370	Typical, 3-point bend
Compressive Strength	MPa	~2070	~2600	~2410
Density	g/cm³	3.70	3.90	3.92
Hardness	HV	1380	1720	1800	Vickers
Max. Working Temp.	°C	1500	1650	1750	In air
Thermal Conductivity	W/(m·K)	25	30	30	@ 20°C
Coeff. Thermal Expansion	x10⁻⁶/K	7.7	7.8	7.8	RT - 1000°C
Volume Resistivity	Ω·cm	>10¹⁴	>10¹⁴	>10¹⁴	@ 25°C

Length (L)	Width (W)	Height (H)
150	20	20
120	80	40
100	50	30
90	30	20
50	20	20

Length (L)	Width (W)	Height (H)
115	30	20
77	13	8
44	11	8

Composition	UNIT	Al95	Al99	Al997
Al2O3 Content	%	95	99	99.7
Colour		White	Ivory	Ivory
Tensile Strength	Kpsi	32	38	36
Flexural Strength	Kpsi	52	55	54
Compressive Strength	Kpsi	300	377	350
Density	g/cc	3.70	3.90	3.92
Hardness	HV, GPa	13.8	17.2	18
Thermal Conductivity	W/(m·K)	25	30	30
C.O.T.E.	In / In°C (x10^-6)	7.7	7.8	7.8
Working Temperature	°C	1500	1650	1750
Dielectric Constant		9.5	9.7	9.8
Volume Resistivity (25°C)	Ohm-cm	>10^14	>10^14	>10^14

AC0928 Alumina Boats (Aluminium Oxide Boats, Al2O3 Crucibles)

Description of Alumina Boats

Specifications for Alumina Boats

How to Choose the Right Alumina Boat Purity?

Alumina Boat Types & Standard Sizes (Selection)

1. Rectangular Alumina Boats

2. Oval-Bottom Alumina Boats

3. Classic High-Wall Alumina Boats

Primary Applications

Alumina Boats Packaging

Specification

SDS

SAFETY DATA SHEET

Case

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FAQ

What is the difference between 95%, 99%, and 99.7% alumina boats?

Are your alumina boats suitable for use in a tube furnace?

Can you manufacture custom-sized or shaped alumina boats?

How should I clean an alumina boat after use?

LAST RECOMMENDATION

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