Industrial Ceramics Strong Insulation 95 Alumina Ceramic Lamp Holder

﹡Product Overview

Our 95% alumina (Al₂O₃) ceramic lamp holders are engineered for high-voltage insulation, thermal resistance, and long-term durability in industrial lighting systems. Ideal for harsh environments where plastic or metal components fail.

﹡Key Technical Specifications

✅ Material: 95% Alumina Ceramic – Optimal balance of cost & performance
✅ Density: 3.7-3.8 g/cm³ – High structural integrity
✅ Dielectric Strength: 15-18 kV/mm – Superior electrical insulation
✅ Thermal Properties:

Continuous Service Temp: 1,500°C (2,732°F)

Thermal Shock Resistance: ΔT >400°C
✅ Mechanical Properties:

Hardness: 1,200 HV (Mohs 8.5)

Flexural Strength: 280-320 MPa
✅ Standard Features:

Screw terminals: M3-M8 thread options

Wire channels: 2-6mm diameter

Surface finish: Glazed (Ra 0.3µm) or matte
✅ Custom Options:

High-voltage variants (up to 50kV)

Integrated cooling fins

Custom branding/engraving

﹡Industry Applications

1. High-Intensity Discharge (HID) Lighting

Metal halide lamp bases – Withstand 1,000°C arc temperatures

High-pressure sodium lamp holders – Resists sulfur corrosion

2. Industrial Furnace Lighting

Kiln observation port fixtures – 1,400°C continuous operation

Glass melting tank illuminators – Alkali vapor resistance

3. Outdoor & Hazardous Locations

Explosion-proof fixtures (ATEX/IECEx) – Non-sparking design

Marine lighting systems – Salt fog resistant

4. Specialty Lighting

UV curing lamp assemblies – Ozone-resistant

Germicidal lamp sockets – Chemical sterilization compatible

5. Electrical Insulation Systems

Busbar supports – 20kV+ isolation

Transformer terminal blocks – Zero carbon tracking

Competitive Advantages

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﹡Competitive Advantages

✔ Non-Degrading Insulation – No aging vs. plastic components
✔ Corrosion Proof – Immune to humidity, chemicals, and UV
✔ Precision Molded – ±0.1mm dimensional consistency
✔ Cost Effective – 5-10 year service life in harsh conditions

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﹡Production process

1. Grind and crush the raw materials to be slurry or powder

2. se-different method to making the slurry or powder into semi-finished products

3. Put the semi-finished products into the kiln for dewaxing and sintering;

4. After forming and sintering, Ceramic Sleeves products can also be processed by subsequent CNC precision machining according to the drawing requirements. Then Q/C test.

5. Finally package Ceramic Sleeves by bubble paper or cartons and place it on tray for delivery

﹡Certifications

﹡Company

Yixing Shengda Refractory Ceramic Co, Ltd. was established in Yixing City, China in 1995, witha production area of over 10,000m2. lt is an enterprise specializing in the production of aluminaceramic,zirconia ceramic,slicon nitride, silicon carbide and other precision ceramic products. 

And we also produce ceramic band heaters, ceramic terminal block, cordierite and mullite ceramic parts an other ceramic products.

﹡Ceramic Properties

Properties	Units	Cordierite Ceramic	Mullite Ceramic	95%Alumina Ceramic	99%Alumina Ceramic	99.5%Alumina Ceramic	99.7%Alumina Ceramic	Silicon Nitride	Zirconia Ceramic
Colour		Yellow	White	White	Light yellow	Light yellow	Light yellow	Black	White
Density	g/cm3	1.9	2.6	3.6	3.8	3.8	3.9	3.2	6
Flexural Strength	Mpa	30	120	300	350	375	375	800	1100
Compressive Strength	MPa	350	500	2500	2800	2800	2554	2600	3000
Modulus of Elasicity(20℃）	Gpa	40	100	300	350	350	357	290	320
Max Use Temperature	°C	1200	1300	1400	1500	1500	1760	1300	1050
Thermal Condutivity	W(m.K)	1.3-1.8	2~6	20	30	30	33-38	25	3
Thermal Expansion Cofficient	10-6/°C	2.5-3	2.5-3	7.5	8	8.2	8.2	3	10
Thermal Shock Resistance	△T℃	300	150	140	150	200	223	600	250
Dielectric Strength	KV/mm	-	-	15	18	18	23.4	14	15
Dielectric Constant	Er	8	8	9	9.2	9.2	9.84	9	26