Active Member
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[China]
Address: NO 21st ChuangXing Road, Shangsha community , Changan Town, Dongguan city Guangdong province, China
Contact name:Admin deng
Dongguan Ming Rui Ceramic Technology Co.,ltd |
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High Temperature Resistant 95% 99% Alumina ceramic Rod for Heating Element 2mm 3mm 4mm
1. 95% 99% alumina ceramic rod doesn't give out toxic gases at high temperature . It is eco-friendly .
2. it is electrical insulating ceramic rod .
3. 99% Alumina ceramic rod is not flexible , it is with high hardness , so it is strong and rigid in a way . However ceramic is crisp , it may break if drop to some rigid floor from a certain distance , but it depends on the shape and the way you drop it . The rod you inquired is not easy to break .
4. machined finish we mean after the rod was sintered , we grinding or machining it to get the surface finish and the dimension you need .
5. We are able to make grove at both ends of the rod of these 3 types of diameters . Please advice what is the dimension of the grove on which diameter rod . Nomally the diameter more smaller it is more difficult to make .
Properties | Units | Alumina(Al2O3) ceramic rod | ||||
Al2O3 92% | Al2O3 95% | Al2O3 99% | Al2O3 99.5% | |||
Mechanical | Density | g/cm3 | 3.6 | 3.7 | 3.9 | 3.9 |
Color | -- | White | White | Ivory | Ivory | |
Water Absorption | % | 0 | 0 | 0 | 0 | |
Vickers Hardness | Gpa | 11 | 11.5 | 13 | 14 | |
Flexural Strength (20°C) | Mpa | 345 | 358 | 380 | 380 | |
Compressive Strength (20°C) | Mpa | 2200 | 2300 | 3000 | 3000 | |
Thermal | Thermal Conductivity (20°C) | W/m.K | 16.7 | 24.8 | 25~35 | 25~35 |
Thermal Shock Resistance (20°C) | ΔT(C) | 250 | 250 | 200 | 200 | |
Maximum Use Temperature | °C | 1500 | 1600 | 1700 | 1700 | |
Electrical | Volume Resistivity (25°C) | Ω.cm | >1014 | >1014 | >1014 | >1014 |
Alumina Ceramic rod
At the present time the special position in area of equipment for dwelling houses and production facilities is occupied by electric heating devices which key elements are, surely, tubular electric heaters (TEHs). Ceramic bushings, being mounted at the ends of a tubular heater, provide its electrical insulation and air-tightness. Thus, we manufacture the products which can be found almost anywhere – in electric boilers, autoclaves, washing mashines, water heaters, electric hot plates, etc. Such a broad scope of usage results in a wide diversity of ceramic bushings’ forms and sizes, and just some of them are shown here at the following photos:
Refractory alumina ceramic substrate/ceramic plate is our main product.Misson can supply high quality alumina plates with competitive prices.
Very small and very large sized plates can be made.
Fine grinding can made tight tolerance Alumina ceramic rod .
High temperature and abrasive resistance is good
Alumina ceramic rod features :
1. High hardness.
2. High heat resistance : Alumina ceramic has excellent thermal stability,which means that it is
widely used in areas where resistance to high temperatures is essential.
3. Good wear resistance : Alumina ceramic is the material of choice for alumina wear parts.
4. High electrical resistivity : Alumina is an electrically insulating material.
5. High corrosion resistance : It is insoluble in water and only slightly soluble in strong acid and
alkaline solutions. Good chemical stability of alumina leads to high corrosion resistance.
| Properties | Units | 95 Alumina | 99 Alumina | ZrO2 |
| Density | g / cm³ | 3.65 | 3.92 | 5.95-6.0g/cm³ |
| Water absorption | % | 0 | 0 | 0 |
| Coefficient of thermal expansion | 10-6/K | 7.9 | 8.5 | 10.5 |
| Modulus of Elasticity Young's Mod | GPa | 280 | 340 | 210 |
| Poisson's ratio | / | 0.21 | 0.22 | 0.3 |
| HV Hardness HV | MPa | 1400 | 1650 | 1300-1365 |
| Flexural Strength @ room temperature | MPa | 280 | 310 | 950 |
| Flexural Strength @700°C | MPa | 220 | 230 | 210 |
| Compressive Strength @ room temperature | MPa | 2000 | 2200 | 2000 |
| Fracture Toughness | MPa *m 1/2 | 3.8 | 4.2 | 10 |
| Heat conductivity @ room temperature | W/ m*k | 18-25 | 26-30 | 2-2.2 |
| Electrical Resistivity @ room temperature | Ω*mm2 /m | >1015 | >1016 | >1015 |
| Max use temperature | °C | 1500 | 1750 | 1050 |
| Resistance to acid alkaline | / | high | high | high |
| Dielectric Constant | / | 9.5 | 9.8 | 26 |
| Dielectric Strength | KV/mm | 16 | 22 | / |
| Thermol Shock Resistance | T ( °C ) | 220 | 180-200 | 280-350 |
| Tensile Strength @ 25 °C | MPa | 200 | 248 | 252 |
We ( Dongguan Mingrui Ceramic Technology Co., Ltd ) are a
professional manufacturer specialized
in R&D, manufacturing and selling customized all kinds of high
precision zirconia and alumina ceramic parts, Alumina ceramic rod . Our main products include ceramic rod , ceramic tube,
ceramic plunger, ceramic valve, ceramic plate, ceramic shaft and
bearing , ceramic nozzle etc , which are mainly used in industrial
fields of Machinery, Petrochemical oil and gas, Valves, Automotive,
Food Processing, Fluid Handling, Process Control, Thermal
Processing, Aerospace, Defense, Eletronic and Electrical, Textile,
Mechanical, Engineering, Mineral Processing, etc.
We have a full service include mold design and development ,
ceramic forming , precision machining
and precision detection technology. We have achieved great successes in particular requirements
which is based on cooperating with Tsinghua University and getting rich experience by our professional technical engineer teams . Our factory have an unique technical called mirror polishing which improve
our products more smooth , bright than other competitors.
