Macor Glaskeramik Full Analysis

Imagine a material that has the easy processing of traditional materials but also has excellent thermal and electrical properties. How would such a material change various industries?

What is Macor Glaskeramik?

This is a polycrystalline composite material known for its unique processability. It is often used in demanding applications due to its excellent mechanical strength, dielectric properties and thermal stability. Therefore, in today’s environment, it has become an ideal material for many projects, especially those that require high tolerances. Let me introduce Macor Glaskeramik composition in detail.

Macor Glaskeramik Composition

Macor Glaskeramik is composed of the following components. I will explain to you the role and reason of each material. After reading this, you may understand how its excellent performance comes from.

1.Silicon Dioxide (SiO₂): ~46%

Function:
This is the main component of glass, giving the material excellent chemical resistance and thermal stability
Reason:
To improve the strength and uniformity of thermal expansion of the material, as well as to improve the corrosion resistance to chemical reagents

2.Magnesium Oxide (MgO): ~17%

Function:
Regulate thermal expansion, enhance high temperature resistance and mechanical strength
Reason:
Magnesium Oxide (MgO) can improve thermal shock resistance and ensure that the material does not crack under drastic temperature changes.

3.Aluminum Oxide (Al₂O₃): ~16%

Function:
Enhance the hardness, strength and wear resistance of the material, and improve high temperature performance.
Reason:
Alumina has good electrical insulation and chemical corrosion resistance, suitable for high-precision applications in electronics and machinery

4.Potassium Oxide (K₂O): ~10%

Effect:
Reduces the melting point of glass and increases the processability of the material.
Reason:
Potassium oxide in the composition improves the softening behavior of the material, making it easier to handle during processing.

5.Boron Oxide (B₂O₃): ~7%

Function:
Improve the thermal stability and thermal shock resistance of the material, while reducing the melting point.
Reason:
Boric oxide can give the material glass phase properties, which helps to maintain dimensional stability at high temperatures.

6.Fluorine (F): ~4%

Effect:
Improve processability and reduce hardness, making the material processable by conventional machine tools.
Reason:
Fluoride can form a unique microcrystalline structure, ensuring the toughness and easy processability of the material.

Macor Glaskeramik Advantages

Excellent machinability, complex shapes can be made according to specific requirements
(Continuous use) Maximum temperature 800°C, (Short-term use) Maximum temperature up to 1000°C
Macor Glaskeramik can maintain stability and reliability in harsh chemical environments
High vacuum, complete and without risk of outgassing
Machining tolerances up to 0.0005 inches (0.013 mm), extremely friendly to high-precision applications
Not demanding on processing equipment, can be easily processed using standard metal processing tools

Macor Glaskeramik Applications

The application range of this material is very wide, for example: aircraft hinges, doors and windows of NASA aircraft, ion trap brackets, medical bracket components, etc. For other cases and projects we have participated in using this material, please view our macor guide (opens in a new tab)

Material Properties

Thermal	SI/Metric	Imperial
CTE -100°C – 25°C	81 x 10^-7/°C	45 x 10^-7/°F
CTE 25°C – 300°C	90 x 10^-7/°C	50 x 10^-7/°F
CTE 25°C – 600°C	112 x 10^-7/°C	62 x 10^-7/°F
CTE 25°C – 800°C	123 x 10^-7/°C	68 x 10^-7/°F
Specific Heat, 25°C	0,79 kJ/kg°C	0.19 Btu/lb°F
Thermal Conductivity, 25°C	1,46 W/m°C	10.16 Btu.in/hr.ft²°F
Thermal Diffusivity, 25°C	7,3 x 10^-7m²/s	0.028 ft²/hr
Continuous Operating Temperature	800°C	1472°F
Maximum No Load Temperature	1000°C	1832°F

Thermal	SI/Metric	Imperial
CTE -100°C – 25°C	81 x 10^-7/°C	45 x 10^-7/°F
CTE 25°C – 300°C	90 x 10^-7/°C	50 x 10^-7/°F
CTE 25°C – 600°C	112 x 10^-7/°C	62 x 10^-7/°F
CTE 25°C – 800°C	123 x 10^-7/°C	68 x 10^-7/°F
Specific Heat, 25°C	0,79 kJ/kg°C	0.19 Btu/lb°F
Thermal Conductivity, 25°C	1,46 W/m°C	10.16 Btu.in/hr.ft²°F
Thermal Diffusivity, 25°C	7,3 x 10^-7m²/s	0.028 ft²/hr
Continuous Operating Temperature	800°C	1472°F
Maximum No Load Temperature	1000°C	1832°F

Electrical	SI/Metric	Imperial
Dielectric Constant, 25°C	——	——
1 kHz	6,01	6,01
8,5 GHz	5,64	5,64
Loss Tangent, 25°C	——	——
1 kHz	0,0040	0,0040
8,5 GHz	0,0025	0,0025
Dielectric Strength (AC) avg. (25°C, under 0,3 mm thickness.)	45 kV/mm	1143 V/mil
Dielectric Strength (DC) avg.(25°C, under 0,3 mm thickness)	129 kV/mm	3277 V/mil
DC Volume Resistivity, 25°C	10¹⁷ Ohm.cm	10¹⁷ Ohm.cm

Note: Macor is a machinable ceramic produced by Corning Inc

How to Machine Macor Glaskeramik

If you want to process this material for your own project, you must master the relevant knowledge, such as turning, drilling, milling, etc. But it is not difficult. Please watch our guide on Macor Machining (opens in a new tab). I believe that you should be able to get started quickly after mastering the correct route. Or you can contact our experts. We are a manufacturer engaged in macor precision machining, providing a variety of material forms from Macor plates, rods, strips to tubes, focusing on the processing of high-precision and complex parts, and committed to providing customers with comprehensive solutions.