Ferrotec APG 800 Series Audio Ferrofluid
Type: APG 840

Product Description

Ferrotec’s APG 840 Audio Ferrofluid is a member of Ferrotec’s family of APG 800 Series ferrofluids for audio speaker applications. The APG 800 Series is black-brown or red-brown viscous fluid and uses a synthetic hydrocarbon carrier liquid.


APG 840 Specifications and Physical Properties

Appearance black-brown or red-brown viscous fluid
Carrier Liquid synthetic hydrocarbon
  CGS Units SI Units
Saturation Magnetization (Ms) 220 Gauss 22 mT
Viscosity @27°C 4000 cP 4000 mPa·s
Density @25°C 1.09 g/cc 1.09 103 kg/m3
Pour Point -24 °C -24 °C
Flash Point >200 °C >200 °C
Thermal Conductivity @38°C 150 mW/(m·K) 150 mW/(m·K)
Surface Tension @25°C 32 dynes/cm 32 mN/m
Coefficient of Thermal Expansion 7.5 x 10-4 ml/ml°C 7.5 x 10-4 /K


APG 840 Ferrofluid Additional Information

For more information about material handling, refer to the MSDS (Material Safety Datasheet) for the APG 800 Series family of products.
Download the apg800msds.pdf  »