Machining/Grinding Macor® Glass Ceramic

CiDRA® Precision Services, LLC has years of experience manufacturing micron level tolerance products from Macor® glass ceramics. We leverage our in-depth dicing, drilling, milling, grinding, and polishing capability to manufacture the highest quality Macor® products.

Whether you need prototypes or volume production, CiDRA® Precision Services, LLC is here to help. Please contact us to discuss your applications.

About Macor®

Macor® is a machinable glass-ceramic made by Corning, Inc. Similar to conventional glasses, Macor® has excellent thermal characteristics and is a very good insulator with a low coefficient of thermal expansion.   For these reasons, it has good thermal shock characteristics. Macor® is usable in an air atmosphere to 1000°C, but is limited in vacuum systems to 600°C and is attacked by halogen acids at elevated temperatures. Macor® is white in color and does not transmit light.

Macor® Glass Ceramic Applications

  • Robotic manipulators
  • Support posts
  • Vacuum feedthroughs
  • Welding nozzles

Macor® Properties

 

Units

Macor®
Softening Point C
Annealing Point C
Strain Point C
Max Use Temperature C 800 - 1000
Thermal Conductivity W/(m C) 1.46 - 1.8 
Specific Heat J/(Jg C) 795
Coefficient of Thermal Expansion 1/C (x10^-6) 9.3
Color White
Moh Hardness 4.4
Knoop Hardness kg/mm^2 240 - 250
Density g/cm^3 2.52
Compressive Strength MPa 345
Tensile Strength MPa 67 - 90
Bending Strength GPa 94
Young's Modulus MPa 66.9
Poisson's ratio 0.29
Fracture Toughness MPa m^1/2 1.53
Dielectric Strength kv/cm 40
Dielectric Constant (@1MHz) 6
Dielectric Loss Tangent 0.005
Resistivity ohm/cm >10^17
Usable Transmission Range um N/A
Refractive Index (@550nm) N/A
The information provided in this table is for room temperature only, and is a compilation of publicly available data.  This information is provided for comparison purposes only, and is not intended to be warrantable.   Further, CiDRA® Precision Services, LLC disclaims any and all liability from errors, inaccuracies, or omissions.

 

Please contact us if you would like to discuss your Macor® dicing, drilling, milling, grinding, polishing or any other machining applications.