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APG E Series Audio Ferrofluid

Ferrotec’s APG E-Series ferrofluids are based on the same chemistry as the APG 900 series ferrofluids so their properties are similar. However, the Eseries fluids have been tailored to meet specific requirements of a loudspeaker by altering their colloid stability or magnetization and viscosity values. These ferrofluids cover a broad range of applications due to their customized nature. An "E" type ferrofluid can be used for heat transfer alone or for heat transfer and damping. The transient temperature capacity of these fluids is 200°C, however, to ensure long term reliability, operation above 115°C for extended periods should be minimized. They are durable under high humidity and in contact with water.

Carrier Liquid: synthetic hydrocarbon
Appearance: black-brown or red-brown viscous fluid

 
Saturation Magnetization (Ms)
Viscosity
Ferrofluid Type Gauss [CGS] mT [SI] cP [CGS] mPa-s [SI]
APG E11 275 27.5 1000 1000
APG E18 137.5 13.8 90 90
APG E23 192.5 19.3 400 400
APG E25 220 22 1000 1000
APG E26 275 27.5 300 300
APG E32 330 33 1200 1200

 

APG E Series Audio Ferrofluids Additional Information

For more information about material handling, refer to the MSDS (Material Safety Datasheet) for the APG E Series family of products.
Download the apgEmsds.pdf -- 168K  »