Automotive Sensors Alumina Ceramic Tube

Alumina Ceramic Tube for Automotive Sensors_1

Alumina Ceramic Tube for Automotive Sensors 1_1

Categories: Alumina ceramics Tags: Alumina Ceramic Tube For Automotive Sensors

Description
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Automotive Sensors Alumina Ceramic Tube

Main Features

• High hardness with low density
• Wear & abrasion resistant
• Resists strong acid and alkali attack at high temperatures
• Excellent electrical insulation properties
• High compressive strength
• High mechanical Strength
• Excellent refractory material
• Moderate thermal conductive and thermal expansion rates
• Resistant to thermal shock
• High dielectric strength
• Transparent to microwave radio frequencies

The specification of ceramic parts

Material option	Alumina(Al2O3), Zirconia (ZrO2), Silicon carbide(SiO2), Silicon nitride(Si3N4)
Forming methods	ISO pressed, Dry pressed, Ceramic injection molding, Hot pressed
Specification	OD can be from 1 to 50mm, length can be from 10mm to 800mm
Precision processing	CNC machining, Precision grinding, Polishing, Lapping,
Tolerance	The tolerance of OD and ID can be 0.001mm, the tolerance of length can be 0.001mm
Key parameters	Roughness to be 0.02mm, Flatness to be 0.001mm, Parallelism to be 0.001mm
Surface quality	Free of cracks, foreign contamination, mirror surface better than Ra0.1

Automotive Sensors Alumina Ceramic Tube

The description of high precision alumina ceramic parts

Alumina (Al2O3) is a hard-wearing technical ceramic material frequently used in a broad range variety of industries applications. After firing and sintering, the alumina ceramic parts can only be precisely machined using diamond-grinding methods. It’s charactered by high tighten tolerance, high hardness and wear resistance, low erosion levels, high-temperature resistance, corrosion resistance, and chemical stability. Furthermore, it can be highly polished making it a mirror surface to reduce friction at the fitting, working status.
We offer a selection of purities ranging from 95 – 99.8%. Our factory has access to many different types of shaping methods, including dry pressing, hot pressing, ceramic injection molding, ISO pressing, tape casting, and extruded.
Our facility is capable of machining a variety of complicated ceramic parts with a very high accuracy dimension through fine grinding, lapping, CNC machining, laser cutting, and so on.

Datasheet of Technical ceramics

Property	Units	Material
Property	Units	99.5% alumina	99% alumina	95% alumina	ZrO2 (Y-TZP)	ZrO2 (TTZ)
Density	g/cm³	≥3.85	≥3.80	≥3.60	≥5.95	≥5.72
Water absorption	%	0	0	0	0	0
Hardness	HV	1700	1700	1500	1300	900
Flexural strength	Mpa	≥379	≥338	≥320	≥1200	≥1200
Compressive strength	Mpa	≥2240	≥2240	≥2000	≥1990	1750
Fracture toughness	Mpa m^1/2	4-5	4-5	3-4	6.5-8	11
Max. service temperature	ºC	1675	1600	1450	1000
CTE	1×10 ^-6/ºC	6.5~8.0	6.2~8.0	5.0~8.0	8.0~9.5	10.2
Thermal shock	T(ºC)	≥250	≥200	≥220	≥300	350
Thermal conductivity(25ºC)	W/m.k	30	29	24	3	3
Volume resistivity	ohm.cm
25ºC		>1 x 10¹⁴	>1 x 10¹⁴	>1 x 10¹⁴	>1 x 10¹¹	>1 x 10¹¹
300ºC		1 x 10 ¹²	8 x 10¹¹	10¹² -10¹³	1 x 10 ¹⁰	1 x 10 ¹⁰
500ºC		5 x 10 ¹⁰	2 x 10⁹	1 x 10⁹	1 x 10⁶	1 x 10⁶
Insulation strength	KV/mm	19	18	18	17	20
Dielectric constant(1Mhz)	(E)	9.7	9.5	9.5	29	28

Automotive Sensors Alumina Ceramic Tube

Our capability and strength

We have in-housing comprehensive manufacturing types of equipment, including forming, sintering,
CNC machining, precision grinding, laser cutting, and so on, it helps us to control the quality very well.
Also, it greatly benefits cost control.

Automotive Sensors Alumina Ceramic Tube