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Macor Machinable Glass Ceramic
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Macor Machinable Glass Ceramic

Macor Machinable Glass Ceramic

Machinable glass ceramics, commonly known as Macor ceramics, are a multifunctional material that combines the features of glass and ceramics. They are are polycrystalline composites with exceptional machinability that can be processed into elaborate geometries, intricate patterns, and precise dimensions. They are superior electrical insulators and have low thermal expansion coefficient, good thermal stability, high breakdown strength, and low dielectric loss. Additionally, they can withstand harsh chemical environments thanks to their high corrosion resistance. They are resistant to ageing and have a long service life.
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Product Introduction

UNIPRETEC can provide you with various specifications of Macor bars, plates, blocks, etc. In stock. You can directly purchase the blank materials and process them into needed ceramic parts using existing equipment like metal processing. Additionally, UNIPRETEC offer processing services according to the drawings provided. Our company is equipped with a number of CNC lathes, surface grinders, and machining centers, and the delivery cycle is short. The available machinable ceramic rods have the following specifications: φ10/15/20/25/30/35/40/45/50/55/60/65/70/75/80/85/90/95/100/105/110/115/120mm, length 100/150/300mm.

 

Machinability

 

Excellent machinability is one of the key benefits of machinable glass ceramics. It can be easily processed using standard processing methods like milling, drilling, grinding and turning, and intricate geometrical shapes, complicated patterns, and accurate dimensions, such as varied ceramic thin walls, ceramic threads, etc., and also be processed without the need for opening the mold. There is a significant reduction in the design and processing cycle, and no specialized tools or equipment are needed.

 

Thermal Stability

 

Machinable glass ceramics provide great thermal stability. They have a low coefficient of thermal expansion, therefore can endure fast temperature fluctuations from minus 200 degrees to 800 degrees without breaking or cracking. As a result, they are frequently used in welding fixtures and molding molds for optical glass.

 

Electrical Insulation

 

Machinable glass ceramics offer superior electrical insulation properties (electric breakdown up to 40KV/A per mm), high resistance, and low dielectric loss, making them appropriate for electrical insulation-required applications. For example, they can be used as electrical insulators in electrical systems, connectors, and components, etc.

 

Material Properties of Macor Machinable Glass Ceramic

ITEM UNIT Machinable Glass Ceramic 丨MGC
Main Content - SiO2+MgO+Al2O3+K2O+B2O3+F
Color - White
Density g/cm3 2.40
Apparent Porosity % 0.069
Mohs Hardness - 4-5
Compressive Strength (25℃) Mpa 510
Flexural Strength (25℃) Mpa 90
Thermal Conductivity (25℃) W/m·k 1.43
Max. Working Temperature ℃ 1,000
Continuous Using Temperature ℃ 800
CTE (25-1,000℃) 10-6/K 7.4
Electricity Resistivity (20℃)

 

Ω·cm

 9.0 x 1013
Electricity Resistivity (200℃) 5.9 x 1010
Electricity Resistivity (500℃) 2.3 x 108
Dielectric Constant (1MHz) - 5.7
Dielectric Strength (25-1,000℃) KV/mm 43
Tangent of Dielectric Lose Angle - 4.0 x 10-3
Chemical Stability 1:9 HCI, 1 hour

 

mg/cm2

 5.84
Chemical Stability 10% NaOH, 1 hour 12.4
Remarks: The data is for reference, exact data will vary depending on producing method and part shape.

 

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