Description

99.5% Al2o3 99.7% Alumina Machinable Ceramic Screw

Ceramic screws have a number of unique advantages over traditional metal screws. Alumina Ceramic screws are very resistant to high temperatures and corrosion, which makes them useful in a variety of extreme environments.

Besides, due to the high hardness of the ceramic material, these screws have excellent wear resistance and can be used for long-term use without frequent replacement.

Application:

They are used in the manufacture of structural parts for aircraft engines and spacecraft due to their lightweight, high strength and high temperature resistance.

In the medical field, they are widely used in artificial joints and dental implant procedures, and their anti-wear properties make them an ideal choice. In addition, ceramic screws also play an important role in the fields of chemical industry, energy, and electronics.

Challenges:

Although ceramic screws have many advantages, they also come with some challenges.

1.The brittleness of the ceramic material makes the screws prone to cracking.

2.Due to the difficulty of processing ceramic materials, the manufacturing cost is high.

Technical Data

Properties	Unints	Alumina						Zirconia	Sic	Si3N4
Properties	Unints	95%al2o3	97%al2o3	99%al2o3	99.5%al2o3	99.7%al2o3	99.99%al2o3	Zirconia	Sic	Si3N4
Density	g/cm3	3.6	3.75	3.8	3.9	3.94	3.95	6	2.7	2.8
Color	-	White	White	Ivory	Ivory	Ivory	White	White/Black/Blue	Black	Gray
Hardness	Mohs Scale	8.8	8.9	9	9	9	9	8.8	9.5	9
Straightness	‰	1	1	1	1	1	1	1	1	1
Bending Strength(20°c)	Mpa	304	320	340	370	375	375	1200	90	180
Compressive Strength(20°c)	Mpa	1910	2100	2210	2300	2300	2300	2500	600	650
Water Absorption	%	≤0.2	≤0.2	≤0.2	≤0.2	≤0.2	≤0.2	0	0	0
Max Working Temperature	°c	1500	1650	1700	1750	1750	1750	600	1600	1650
Dielectric Constant 1MHZ(E)	25°c@1MHz	9.2	9.3	9.5	9.7	9.7	9.8	29	10	9.5
Thermal Conductivity	W/m.k	25	27.5	29	30	30	30	2.5	15	23
Fracture Toughness	Mpa*m1/2	3.8	4	4.2	4.3	4.3	4.4	10	10	10