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​Machinable glass ceramics are a special type of glass-ceramic material that can be machined using conventional metalworking tools. This unique property allows for the creation of complex shapes and precision parts more efficiently and cost-effectively than with traditional ceramic machining methods, according to Precision Ceramics. 

 

Key Features and Advantages:

• Machinability: Macor, a common example, can be machined with standard HSS or carbide tools, offering a significant advantage over other ceramics.

• High Temperature Resistance: Machinable glass ceramics, like Macor, can withstand high temperatures, making them suitable for various applications.

• Excellent Electrical Insulation: They are excellent insulators, even at high temperatures and frequencies.

• Dimensional Stability: Their low thermal expansion coefficient ensures dimensional stability and resistance to deformation.

• Non-Porous and Non-Wetting: They are non-porous and do not wet, making them suitable for applications where these properties are important.

• Cost-Effective Manufacturing: Machining with standard tools allows for faster turnarounds and lower production costs compared to other ceramic manufacturing processes.

• No Post-Firing Required: Machinable glass ceramics do not require post-firing after machining, simplifying the manufacturing process. 

 

Applications:
 

Electronics: They are used in electronic components, insulators, and high-voltage applications. 

Aerospace: Due to their high-temperature resistance and dimensional stability, they are used in aerospace components. 

Industrial Equipment: They are used in industrial equipment for various applications, including high-temperature environments. 

Prototypes and Small to Medium Production Runs: Their machinability makes them well-suited for prototyping and small to medium production runs. 

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Main properties

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• Magnetic susceptibility   ≤1.2×10-6

• Dielectric constant          6～7

• Breakdown voltage        ≥15 KV/mm

• Flexural strength              ≥108Mpa

• Fracture Modulus            15000bf/in2

• Impact toughness           ≥ 3.8 KJ/m2 Knoop

• Hardness                           176～343 kg/mm2

• Volume density 　           2.5～2.8 g/cm3

• Range of operating temperature   -200～+1000℃

• Thermal expansion coefficient        ≤94×10-7 /K

• Thermal conductivity                        ≥ 1.7 W/m·K

 

Specifications

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Rod: Ф25mm～Ф160mm, up to 300mm long

Plate: customized in various sizes

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