High Precision 99.5% Alumina Ceramic Plunger

Product Description

Alumina ceramic piston / plunger 

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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

 

FAQ

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.
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