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Alumina ceramic

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Alumina ceramic screw nuts fastener wear insulator resistant precise ceramic head screw and nuts

Brand：OEM
Material：Alumina ceramic
Precision：Ra0.1 um tolerance 0.001mm
Features：Heat resistance / Wear resistance / High purity / Refractory / High Corrosion / Good Insulation
Color：White Blue Ivory Black etc.
Customized：YES OEM

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Alumina Ceramic Screw Nuts Fastener Wear Insulator Resistant Precise Ceramic Head Screw And Nuts

High precision Alumina Ceramic Parts OEM

The properties of alumina ceramics

· Flexural strength	· Chemical resistance	· Electrical insulation	· Corrosion resistance	· Dielectric strength
· Wear resistance	· Temperature resistance	· Thermal conductivity	· High voltage	· Hardness...

US offers a wide variety of alumina ceramic screw and nut manufactured from high-performance technical alumina ceramic materials, Enhance performance and product life by using the material best suited to your application.

Standard ceramic fastener sizes and head styles currently available in Hex, Socket Cap, Flat Head Slotted, Flat Socket Head, Pan Head Slotted, Phillips Pan Head and Phillips Flat Head. Fastener sizes currently available 0-80, 2-56, 4-40, 6-32, 8-32, 10-32, 1/4-20, 5/16-18, 3/8-16, M2, M3, M4, M5, M6, M8 .

Parts of available us case specifications:

Thread Size	Available Lengths
0-80	1/4"
2-56	1/4" x 3/8" x 1/2"
4-40	1/4" x 3/8" x 1/2", 3/4", 1"
5-40	1/4" x 3/8" x 1/2", 3/4", 1"
6-32	1/4" x 3/8" x 1/2", 3/4", 1"
8-32	1/4" x 3/8" x 1/2", 3/4", 1", 1 1/4", 1 1/2"
10-32	1/4" x 3/8" x 1/2", 3/4", 1", 1 1/4", 1 1/2", 1 3/4"

Wear and hardness resistant
The ceramic is better wear and abrasion resistant property than metal. The ceramic hardness (mohs)up to 9, HRA 80 - 90. Ceramic hardness is not second only to diamond, but far beyond the wear resistance of steel and stainless steel.

High voltage and Insulator
High frequency insulating ceramics have small dielectric constant, low dielectric loss, high mechanical strength, high dielectric strength, insulation resistance and thermal conductivity.Dielectric constant up to 10; Electrical resistivity up to 10^∧14 Ohm.cm at 20°C ;Dielectric strength up to 20 kV/mm...

High purity alumina ceramics

99.99% Alumina ceramic; 99.9% Alumina ceramic

Ordinary alumina ceramics

99.7% Alumina ceramic,99.5% Alumina ceramic,99% Alumina ceramic,97% Alumina ceramic,96% Alumina ceramic,95% Alumina ceramic.

Ceramic materials
· 95%--99.99% Alumina (Al2O3) · Silicon Carbide · Silicon Nitride · TTZ: Magnesia partially stabilized Zirconia (ZrO2)
· YTZP: Yttria partially stabilized Zirconia (ZrO2) · ZDY: Yttria fully stabilized Zirconia (ZrO2)...

	Al ₂O ₃	ZrO2/Y2O3	ZrO2/MgO	MgO	SiC	Si3N4 Reaction sintered	Si3N4 Hot pressed	ALN
Physical properties
Density (g/cm3)	3,9	5,9	5,75	3,58	3,2	3,27	3,29	3,26
Molecular weight (g/mole)	102	-	-	40,4	40,1	140	140	41
Maximum service temperature air (°C)	1700- 1800	1500	1000	2200	1500	1200- 1500	1100- 1600	1000- 1800
Mechanical properties
Hardness (Mohs)	9	-	-	5,5	9	-	-	7
Modulus of elasticity (GPa)	300-400	200	200	250-300	420	170-220	280-310	318
Poisson's ratio	0,25	-	-	0,18	0,14	0,25-0,26	0,27	0,25
Fracture toughness (MPa.m1/2)	2-3	7-13	6-10	-	2,5-3,5	3,5-5	6,1	4,5
Electrical properties
Dielectric constant	9-10	-	-	9-10	-	10	10	9,2
Electrical resistivity at 20°C (Ohm.cm)	>10 ₁₄	10 ₁₃-10 ₁₄	>10 ₁₀	-	10 ₂-10 ₆	>10 ₇	10 ₁₂- 10 ₁₅	>10 ₁₄
Dielectric strength (kV/mm)	10-20	9	2-10	-	-	-	-	15
Thermal properties
Specific heat (J/K/kg)	900	400-500	420	870-880	750	690	680-800	800
Thermal conductivity (W/m/K) at 20°C	26-35	2,2-3,2	1,5-2,5	40-50	63-155	9-30	15-43	180
Coefficient of thermal expansion ( 10-6) from 20 to 1000°C	8-9	10-11	5-16	10-13	4-5	3	3,3	4,4-5,3
Melting point (°C)	2050	2590	-	2800	2500	1900	1900	2200

Precision of manufacture
Dimensional accuracy	Up to 0.001mm
Smoothness	Highest possible mirror
Concentricity	Up to 0.003mm
Parallelism	Up to 0.002mm
The inner hole tolerance	The minimum 0.005mm
Straight flute	The narrowest 0.1x100mm
The thickness of the size	Minimum to 0.02mm
The screw thread	Minimum internal thread M2
Cylindricity	Up to 0.004mm
The linear tolerance	Up to 0.001mm
The smallest aperture	The minimum 0.07mm
Precision process	CNC maching,grinding,lapping
Surface finish	Glazed,polishing or metallized
Visual quality: 1. No cracks, no dark dots, no contamination and sharp edges; 2. Evenly distributed glaze with very smooth surface

Customization & Machining Service
As a professional manufacturer of industrial ceramic components.We can custom the sepcial specifications of ceramic screws or other ceramic parts.High quality,Factory price, on-time delivery, High composition of ceramics

FAQ
1. Monthly Capacity: 50,000-60,000 pcs;
2. Material: OEM or as per your suggestion;
3. Lead time: about 7-10 days, pls confirm the quantities required;
4. Incoterm: FOB, CFR, CIF;
5. Delivery Cost: It is determinated by the destination port;
6. Payment Term: PayPal; T/T; L/C.
7. Shipment: by sea, by air, by courier, by post, etc.

Feedback
1. For any query or doubt, please contact us firstly, we will update with you soon;
2. For any other satisfaction, please also feedback to us, which could improve our service better and better.

For more information about ceramics parts,please contact our engineers in time >>>

Alumina Ceramic Screw Nuts Fastener Wear Insulator Resistant Precise Ceramic Head Screw And Nuts

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