Ceramic sagger
3 year ago
Industrial Refractory Cylindrical Alumina Ceramic Crucible
The prime strength of the crucible is that it can withstand higher than the melting temperature of the deposited alloy without altering or contaminating the molten metal. In some cases, when the crucible is placed in these very high temperature environments, it must be strong enough to withstand the movement for subsequent processing related to the molten substance.
The ceramic crucible is usually used without overfilling the molten material, to prevent the heated material from jumping out, and to allow air to flow freely in and out for possible oxidation reactions. Do not place the crucible on a cold metal table immediately after heating to avoid it breaking due to rapid cooling.
The description and main features of Alumina Ceramic Tray
1. Material: 99% alumina ceramic or higher purities, corundum-mullite ceramic, zirconia ceramics, boron nitride optional
2. Shape: we supply various shapes, including cylinder, rectangular, square, boat, and so on.
3. Features: all-ceramic crucibles are with excellent chemical resistance, thermal - shock performance.
4. Working temperature: It can be work under max. 1650ºC long term in air, or up to 2000ºC under inert gas
5. Application: They are commonly used in a variety of metal or non-metal melting material, or melting items analysis in the lab, also it's a regular application for smelting & sintering for phosphors, rare earth material, precious metals.
The checklist of standard Ceramic Alumina Crucible in stock
Type 1: Cylindrical ceramic crucibles
Model# |
Outer diameter (mm) |
Height (mm) |
Wall thickness (mm) |
Volume (ml) |
JT2030 |
20 |
30 |
1.5 |
10 |
JT3030 |
30 |
30 |
1.8 |
15 |
JT3060 |
30 |
60 |
1.8 |
30 |
JT3645 |
36 |
45 |
2.5 |
30 |
JT4032 |
40 |
32 |
1.6 |
30 |
JT4050 |
40 |
50 |
2.5 |
45 |
JT4342 |
43 |
42 |
1.8 |
50 |
JT6060 |
60 |
60 |
2.5 |
130 |
JT5590 |
59 |
90 |
2.5 |
200 |
JT10040 |
100 |
40 |
5.5 |
200 |
JT8080 |
80 |
80 |
3.3 |
350 |
JT100100 |
100 |
100 |
4.0 |
550 |
JT135160 |
135 |
160 |
6.0 |
2000 |
Type 2: Cone-shape crucibles
Model# |
Upper OD (mm) |
Bottom OD (mm) |
Height (mm) |
Wall thickness (mm) |
Volume (ml) |
JT2020-14 |
25 |
14 |
20 |
1.5 |
5 |
JT3030-18 |
30 |
18 |
30 |
1.7 |
10 |
JT3438-20 |
34 |
20 |
38 |
1.9 |
20 |
JT4640-25 |
46 |
25 |
40 |
2 |
30 |
JT5645-30 |
56 |
30 |
45 |
2.9 |
50 |
JT5553-48 |
55 |
48 |
53 |
2.5 |
90 |
JT5768-37 |
47 |
37 |
68 |
3.5 |
100 |
JT5572-48 |
55 |
48 |
72 |
2.6 |
140 |
JT-7085-44 |
70 |
44 |
85 |
2.9 |
200 |
JT7590-50 |
75 |
50 |
90 |
2.9 |
300 |
JT80110-65 |
80 |
65 |
110 |
3.3 |
400 |
JT 100120-70 |
100 |
70 |
120 |
3.5 |
600 |
JT105150-70 |
105 |
70 |
150 |
4.5 |
800 |
JT113160-75 |
113 |
75 |
160 |
3.5 |
1200 |
JT125155-80 |
125 |
80 |
155 |
3.5 |
1200 |
Type 3: Other shapes
Model# |
Shape |
Length (mm) |
Width (mm) |
Height (mm) |
Wall thickness (mm) |
Volume (ml) |
JT272310 |
Rectangular |
27 |
23 |
10 |
2 |
5 |
JT971712 |
Rectangular |
97 |
17 |
12 |
2 |
7 |
JT603015 |
Rectangular |
60 |
30 |
15 |
2 |
20 |
JT1002020 |
Rectangular |
100 |
20 |
20 |
2 |
25 |
JT757540 |
Square |
75 |
75 |
40 |
2.5 |
130 |
JT858540 |
Square |
85 |
85 |
40 |
3 |
200 |
JT15512055 |
Rectangular |
155 |
120 |
55 |
5.5 |
550 |
JT10010040 |
Square |
100 |
100 |
40 |
4 |
550 |
JT16016078 |
Square |
160 |
160 |
78 |
6 .5 |
1400 |
The gallery of alumina ceramic crucibles

Datasheet of technical ceramic materials
Property |
Units |
Materials |
||||
99.5%Al2O3 |
99%Al2O3 |
95%Al2O3 |
ZrO2 |
Si3N4 |
||
Density |
g/cm3 |
≥3.85 |
≥3.80 |
≥3.60 |
≥6.0 |
≥3.2 |
Water absorption |
% |
0 |
0 |
0 |
0 |
0 |
Hardness |
HV |
1700 |
1700 |
1500 |
1300 |
1550 |
Flexural strength |
Mpa |
≥379 |
≥338 |
≥320 |
≥1200 |
≥600 |
Compressive strength |
Mpa |
≥2240 |
≥2240 |
≥2000 |
≥1990 |
≥2500 |
Fracture toughness |
Mpa m1/2 |
4-5 |
4-5 |
3-4 |
6.5-8 |
6 |
Max.
service temperature |
ºC |
1675 |
1600 |
1500 |
1000 |
1200 |
CTE (20-800ºC) |
1×10 -6 /ºC |
6.5~8.0 |
6.2~8.0 |
5.0~8.0 |
8.0~9.5 |
3.1 |
Thermal shock |
T(ºC) |
≥250 |
≥200 |
≥220 |
≥300 |
≤1000 |
Thermal conductivity(25ºC) |
W/m.k |
30 |
29 |
24 |
3 |
15~20 |
Volume resistivity (25ºC ) |
ohm.cm |
>1 x 10 14 |
>1 x 10 14 |
>1 x 10 14 |
>1 x 10 11 |
>1 x 10 12 |
Insulation strength |
KV/mm |
19 |
18 |
18 |
17 |
|
Dielectric constant(1Mhz) |
(E) |
9.7 |
9.5 |
9.5 |
29 |
|
Why choose us?
1.10+ years of manufacturing experience in OEM, ODM, and professional management & production team
2. Powerful R&D to support custom
prototyping cases and projects, also large-scale mass production capability
3. In-house complete manufacturing
equipment, including forming, sintering, precision machining process
4. Rigorous quality control system and processes
per ISO9001: 2008, including IQC, IPQC, QA, OQC
5. In addition, we supply one-stop refractory lab sintering spare parts, like ceramic sagger and ceramic setter plate.
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