Macor machinable glass ceramic developed by Corning is a high-performance polycrystalline composite material that is white throughout. Its most distinctive feature is that it has zero porosity and zero air leakage. It also has the ability to be processed by standard metal tools and is widely used in high-end manufacturing.
| Thermal | Sl/Metric | Imperial |
|---|---|---|
| CTE -100°C – 25°C | 81 × 10⁷ /°C | 45 × 10⁷ /°F |
| CTE -100°C – 25°C | 90 × 10⁷ /°C | 50 × 10⁷ /°F |
| CTE 25°C – 600°C | 112 × 10⁷ /°C | 62 × 10⁷ /°F |
| CTE 25°C – 800°C | 123 × 10⁷ /°C | 68 × 10⁷ /°F |
| CTE 25°C – 800°C | 123 × 10⁷ /°C | 68 × 10⁷ /°F |
| CTE 25°C – 800°C | 123 × 10⁷ /°C | 68 × 10⁷ /°F |
| Thermal | Sl/Metric | Imperial |
|---|---|---|
| CTE -100°C – 25°C | 81 × 10⁷ /°C | 45 × 10⁷ /°F |
| CTE -100°C – 25°C | 90 × 10⁷ /°C | 50 × 10⁷ /°F |
| CTE 25°C – 600°C | 112 × 10⁷ /°C | 62 × 10⁷ /°F |
| CTE 25°C – 800°C | 123 × 10⁷ /°C | 68 × 10⁷ /°F |
| CTE 25°C – 800°C | 123 × 10⁷ /°C | 68 × 10⁷ /°F |
| CTE 25°C – 800°C | 123 × 10⁷ /°C | 68 × 10⁷ /°F |
| Thermal | Sl/Metric | Imperial |
|---|---|---|
| CTE -100°C – 25°C | 81 × 10⁷ /°C | 45 × 10⁷ /°F |
| CTE -100°C – 25°C | 90 × 10⁷ /°C | 50 × 10⁷ /°F |
| CTE 25°C – 600°C | 112 × 10⁷ /°C | 62 × 10⁷ /°F |
| CTE 25°C – 800°C | 123 × 10⁷ /°C | 68 × 10⁷ /°F |
| CTE 25°C – 800°C | 123 × 10⁷ /°C | 68 × 10⁷ /°F |
| CTE 25°C – 800°C | 123 × 10⁷ /°C | 68 × 10⁷ /°F |
Although Macor has the ability to process with standard metal tools, there are still
some problems compared with metal (check our latest machining guide for 2025).
Ultra-precision machining can be achieved by using alloy milling cutters and
correct machining parameters.
For example, micro holes can be processed to 0.05mm, and internal threads can reach M1.4, but M1.4 needs to consider its practicality (it is recommended to be larger than M2). In addition, when processing threads, attention should be paid to edge collapse, which is recommended to be solved by chamfering. In terms of cooling, it is recommended to choose water-soluble coolant, which is not easy to adhere to the tool.
Shapal HI-M is a high-performance machinable aluminum nitride ceramic material that has shown outstanding performance in industries such as electronics, semiconductors, electronic components, and engineering. It has unique high thermal conductivity, electrical insulation, high strength, and good chemical stability. Its unique microstructure gives it excellent machinability, allowing for precision machining using conventional metal processing tools, greatly reducing processing time and costs
Macor is a machinable glass-ceramic made from fluorophlogopite mica crystals embedded in a borosilicate glass matrix. This composition gives it a rare
combination of metal-like machinability, excellent electrical insulation, low thermal conductivity, and stability up to 1000°C (no load) while maintaining very tight tolerances.
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