Alumina ceramic piston / plunger
Characters:
1. 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.
2. Good wear resistance : Alumina ceramic is the material of choice for alumina wear parts.
3. 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 |
3.9 |
5.95-6.05 |
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 |
0.23 |
0.3 |
HV Hardness |
MPa |
1400 |
1700 |
1300-1365 |
Flexural Strength @ room temperature |
MPa |
280 |
320 |
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 |
4.3 |
10 |
Heat conductivity @ room temperature |
W/ m*k |
18-25 |
26-30 |
2-2.2 |
Electrical Resistivity @ room temperature |
Ω*mm2 /m |
10^15 |
10^16 |
10^15 |
Max use temperature |
°C |
1850 |
2200 |
1500 |
Resistance to acid alkaline |
/ |
high |
high |
high |
Dielectric Constant |
/ |
9.5 |
9.8 |
26 |
Dielectric Strength |
KV/mm |
10 |
10 |
10 |
Thermol Shock Resistance |
T ( °C ) |
220 |
190 |
280-350 |
Tensile Strength @ 25 °C |
MPa |
200 |
248 |
260 |
Thermal Conductivity(25ºC) |
W/m·K |
30 |
35 |
3 |
Q: Are you trading company or manufacturer ?
A: We are factory.
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-30 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 50% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact us as below:
Phone : 0086-13975373459