Audited Supplier
Mullite alumina ceramic crucibleMullite alumina ceramic crucible is made of mullite. it is mainly used for sintering electronic and magnetic material.Many electronic or magnetic materials have chemical reactions with the ceramic sagger surface during sintering. The saggers used in sintering of various magnetic materials produced by our company are all reasonably selected materials, formed under high pressure and sintered at high temperature, which can play a good insulating role. In addition, the surface of saggar has excellent corrosion resistance by various spraying methods, such as zirconia and high purity alumina.
Crucibles for melting steel features:
1) High density
2) Good thermal stability and distortion resistance at high temperature.
3) High mechanical strength at high temperature.
4) Excellent thermal shock resistance.
5) High thermal conductivity.
6) Perfect oxidating resistance.
7) Excellent corrosion resistance against chemicals at high temperature.
8) High abrasion resistance.
9) Long service life
Item | Testing Condition | 95% AL2O3 | 99% AL2O3 | 99.7% AL2O3 | ||
Physical properties | Density | g/cm3 | >3.6 | 3.89 | 3.96 | |
Moisture absorption | % | 0 | 0 | 0 | ||
Mechanical properties | ROHS Hardness | ≥85 | ≥89 | ≥89 | ||
Flexural strength | psiX103 | 20ºC | 358 | 550 | 550 | |
Compressive strength | psiX103 | 20ºC | 2068(300) | 2600(377) | 2600(377) | |
Fracture toughness | Mpa.m3/2 | K(l c) | 4.3 | 5.6 | 6.0 | |
Thermal properties | Maximum use temperature | ºC | 1450 | 1600 | 1650 | |
Thermal expansion coefficient | 1X10-6/ºC | (25-1000ºC) | 7.6 | 7.9 | 8.2 | |
Thermal shock resistance | ºC | Tc | 250 | 200 | 200 | |
Thermal conductivity | w/mok | 20ºC | 16 | 30 | 30.4 | |
Electrical properties | Volume resistivity | Ohm/cm2 | 100ºC | >1013 | >1014 | >1014 |
Dielectric breakdown strength | KV/mm | 8.7(220) | 8.7(220) | 8.7(220) | ||
Dielectric constant | (E) | 1MHz25ºC | 9 | 9.7 | 9. | |
Q1 : How can you control your quality?
A1 : For each production processing, we have complete QC system for the chemical composition and Physical properties. After production, all the goods will be tested, and the quality certificate will be shipped along with goods.
Q2 : What is your lead time?
A2 : It usually needs about 15- 20 days after receiving the PO.
Q3 : Do you provide free samples?
A3 : Yes, free samples are available, generlly speaking, the buyer shall bear all the delivery cost.
Q4 : What is your payments terms?
A4 : We can accept 30% deposit, 70% balance to be against the BL copy or by LC, or other payment terms.
Q5 : Can we visit your company?
A5 : Yes, for sure, you are welcome to visit JUCOS company.
Q6 : What standards do you have?
A6 : Our products meet the standards, such as ASTM, ASME, AMS, DIN, JIS etc.
The third party testing is all available for us.
