Machining Macor Machinable Glass Ceramics Rod Sheet

Material Introduction

MACOR® can be considered unique as its composition comprises 55%
fluorophlogopite mica and 45% borosilicate glass. Corning’s unique production
process results in Macor’s microstructure that is a key to its versatile
properties.
MACOR® offers a unique combination of properties, unlike any other technical
material.It is a white, nonwetting, odorless and non outgassing material that
exhibits zero porosity.Extremely machinable, MACOR® offers tight tolerances
capabilities,allowing complicated shape design (optimal performances up to +/-
0.013 mm for dimensions, < 0.5 μm for finished surface and up to 0.013 μm for
polished surface). MACOR® remains continuously stable at 800 °C, with a
maximum peak at 1000 °C under no load, and unlike ductile materials, doesn’t
creep or deform. Its coefficient of thermal expansion readily matches most
metals and sealing glasses. As an electric insulator, particularly at high
temperatures, it is excellent at high voltages and a broad spectrum of
frequencies.

Specification

Process range
Inside Diameter
≥0.2mm
Length
≤750mm
Inte , rnal thread
≥2mm
Outside Diameter
≤400mm
Thickness
≤400mm
E , xternal thread
≤400mm
Machining accuracy
roundness
0.002mm
Parallelism
0.003mm
Verticality
0.005mm
concentricit , y
0.002mm
Flatnes
0.002mm
Straightness ,
0.005mm
clearance fit
0.003mm
tolerance of dimension
0.001mm
surface roughness
Ra0.1

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