Schroder Macor - Glass Ceramic

Fields of application

MACOR® is used for insulators and coil carriers in high- and constant-vacuum environments and for electrode and dielectric carriers in the electrical industry.

Main properties

• No porosity, no outgassing
• Low thermal conductivity
• Outstanding electrical properties
• Continuous operating temperature: 800 °C
• No sintering necessary
• Coatable with a variety of materials

Raw material dimensions

• Max. dimensions: 300 x 300 x 50 mm
• Special dimensions only on request

Machining MACOR®

• Machining speed and coolant are decisive for successful machining. Read all about the machining of MACOR® here.

MACOR® composition

• MACOR® glass ceramics consist of a glass matrix containing mica crystals. Its composition of 55 % fluorophlogopite mica and 45 % borosilicate glass gives rise to a microstructure that can be machined into complex shapes with conventional metalworking tools. Find out all about MACOR®’s composition here..

MACOR® semi-finished products

Schröder Spezialglas also offers its customers a variety of semi-finished products of this material in different shapes. These stocked materials are sold for various tests or further processing and can be purchased in small quantities.

MACOR® is an outstanding technical material offering huge benefits in terms of machining. MACOR® is a white, non-wetting, odour-free, non-porous and outgassing-free material.

It lends itself exceptionally well to machining. The production tolerances of MACOR® are surprisingly tight (+/- 0.01 mm, surface finish < 0.5 µm and polished < 0.013 µm) for complicated shapes. MACOR® remains uniformly stable at 800 °C, peaking at 1000°C without load. Unlike ductile materials, it will not creep or deform.

Its coefficient of thermal expansion is equal to that of most metals and glass solder. As an electrical insulator – particularly at high temperatures – the material is outstanding at high voltages and over a broad frequency spectrum.

• Easy to machine
• Resists high temperatures
• Low thermal conductivity
• Keeps to narrow tolerances
• Electrical insulator
• Non-porous, no outgassing
• Strong and rigid
• Highly polishable
• Can be brazed to many materials
• Radiation resistant
• Lead-free

• Constant- and ultra-high vacuum environments
• Laser technology
• Semiconductors/electronics
• Aerospace
• Chemical industry
• Automotive industry
• Military
• Nuclear industry