MACOR® machinable glass-ceramic from CORNING is a white-appearing odorless, and opaque material. It is composed of 55 % MIKA and 45 % borosilicate glass. You can find the detailed material composition in this spec sheet.
MACOR® is an advanced high-performance glass ceramic that offers exceptional properties for a broad range of workpiece designs in the industry. It allows the rapid production of complex shapes and precise workpieces with tight tolerances. MACOR glass-ceramic material is CNC-machined with conventional HSS equipment used for metal processing. Hence, expensive glass processing machinery and diamond tools are usually not required to process MACOR. Learn more about handling and processing MACOR® correctly in our processing instructions.
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Fig.: Finished mechanical component machined from MACOR® glass-ceramic. |
The possible long-term use at 800°C and an allowed load-free peak temperature of up to 1.000°C of MACOR facilitate various sophisticated industrial applications. Corning's unique glass ceramic has zero porosity and is non-wetting. MACOR® does not deform or outgas and allows use in vacuum environments. The glass-ceramic material is an excellent insulator for high voltages at various frequencies, even at a high operating temperature. MACOR sets an industrial standard for machinable glass ceramics that other materials can hardly outperform. Therefore, it is ideal for aerospace applications, medical and semiconductor technology, and other demanding tasks.
MACOR glass-ceramic raw materials are available from stock in sheets, square bars, and round rods at a short lead time (see table). These semi-finished products allow machining to very complicated shapes.
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You are welcome to request a quotation for a custom-finished workpiece made of original MACOR® glass ceramic. |
To send an inquiry for any semi-finished standard MACOR® rod, bar, or sheet glass-ceramic product or a finished MACOR® workpiece with individual shapes and dimensions, please click the button below:
MACOR® Rods |
|
---|---|
Rod Diameter (mm) |
Rod lengths (mm) |
3 | 70 |
4 | 70 |
6 | 70 |
8 | 70 |
12,5 | 70 |
19 | 75, 150, 300 |
25 | 75, 150, 300 |
30 | 75, 150, 300 |
38 | 75, 150, 300 |
50 | 75, 150, 300 |
MACOR® Bars |
|
---|---|
Bar Dimension (mm x mm) |
Bar lengths (mm) |
12,5 × 12,5 | 75, 150, 300 |
19 × 19 | 75, 150, 300 |
25 × 25 | 75, 150, 300 |
30 × 30 | 75, 150, 300 |
50 × 50 | 75, 150, 300 |
MACOR® Sheets |
|
---|---|
Sheet size l x w (mm) |
Sheet thickness (mm) |
75 × 75 | 12,5, 19, 25, 30, 50 |
150 × 150 | 12,5, 19, 25, 30, 50 |
300 × 300 | 12,5, 19, 25, 30, 50 |
The typical lead time for the standard MACOR® glass-ceramic rods, bars, and sheets listed above is approximately one week or less. The lead time can be longer for the large rod, bar, and sheet materials. Please send us your request.
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MACOR® machinable glass ceramic materials from CORNING allow the design of tiny and intricate parts that require machining with high precision. If you have any questions, please contact us. |
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
|
Temp.
|
Weight loss
|
---|---|---|---|---|
5 % HCL | 0,1 |
24 h |
95 °C |
ca. 100 |
0,002 N HNO3 | 2,8 |
24 h |
95 °C |
ca. 0,6 |
0,1 N NaHCO3 | 8,4 |
24 h |
95 °C |
ca. 0,3 |
0,02 N Na2CO3 | 10,9 |
6 h |
95 °C |
ca. 0,1 |
5 % NaOH | 13,2 |
6 h |
95 °C |
ca. 10 |
H2O (water) | 7,6 |
24 h |
95 °C |
ca. 0,01 |
All details and specifications provided here are mean reference values and are not guaranteed. Also, please consider our "Notes on specifications".
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