MACOR® is a machinable glass ceramic (MGC) made by CORNING. It is a white, odorless, and opaque material comprising 55% MIKA and 45% borosilicate glass. The high-performance material has ideal properties for a wide range of industrial applications. MACOR® allows the design and precise manufacturing of complex-shaped parts with tight tolerances. It can be CNC-machined with conventional HSS tools commonly used for machining metal. No expensive special equipment, machinery, or diamond tools are required to process MACOR®.
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Figure: A finished part with tight tolerances made of MACOR® MGC |
MACOR® can be used at temperatures of up to 800 °C for long periods and withstands even up to 1000 °C without load. It has zero porosity and is non-wetting. MACOR® does not deform or outgas. It can be used in vacuum environments and does not require post-firing like other ceramics do. Moreover, it is an excellent insulator for high voltages at various frequencies, as it provides low conductivity. MACOR® MGC sets an industrial standard for machinable ceramics. It is ideal for various aerospace, medical, and semiconductor applications.
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MACOR® allows the design of such tiny and intricate parts with high precision. |
To get a quote for MACOR® glass ceramic material or a finished part with custom shape and dimensions according to your drawing, please click the button below:
We stock MACOR® sheets, rods, and bars which allows short lead times. These are the starting points for complex-shaped parts. Please see below for all available stock dimensions:
Rods | |
---|---|
Rod diameter (mm) |
Lengths (mm) |
3 | 4 | 5 | 6 | 8 | 12.5 | 70 |
19 | 25 | 30 | 38 | 50 | 75 | 150 | 300 |
Get a quote for a MACOR rod |
Bars | |
---|---|
Size (mm x mm) |
Lengths (mm) |
12.5 × 12.5 | 75 | 150 | 300 |
19 × 19 | |
25 × 25 | |
30 × 30 | |
50 × 50 | |
Get a quote for a MACOR bar |
Sheets | |
---|---|
Size (mm x mm) |
Thicknesses (mm) |
75 × 75 | 12.5 | 19 | 25 | 30 | 50 |
150 × 150 | |
300 × 300 | |
Get a quote for a MACOR sheet |
The materials above are typically available in one week or less. Larger dimensions may take a little longer.
Substance | approximate weight percentage |
---|---|
Silicon oxide (SiO2) | 46 |
Magnesium oxide (MgO) | 17 |
Alumina (Al2O3) | 16 |
Potassium oxide (K2O) | 10 |
Boron oxide (B2O3) | 7 |
Fluorine (F) | 4 |
Medium | pH | Time (h) |
Temp. (°C) |
Weight loss (mg/cm2) |
---|---|---|---|---|
5% HCL | 0.1 | 24 h | 95 °C | Approx. 100 |
0.002 N HNO3 | 2.8 | 24 h | 95 °C | Approx. 0.6 |
0.1 N NaHCO3 | 8.4 | 24 h | 95 °C | Approx. 0.3 |
0.02 N Na2CO3 | 10.9 | 6 h | 95 °C | Approx. 0.1 |
5% NaOH | 13.2 | 6 h | 95 °C | Approx. 10 |
H2O (water) | 7.6 | 24 h | 95 °C | Approx. 0.01 |
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Precise workpieces made of original MACOR® glass ceramic material. |
All data and specifications given are average guide values and are not guaranteed. Moreover, please consider the “Notes on Specifications”.
Last update: March 19, 2025