How does the iron affect the properties of MR fluid?
A. The upper limit on force that can be created in an MR fluid is directly related to the amount of iron in the fluid. The more iron there is, the higher the attainable force. Depending on the volume fraction of iron particles, MR fluids can have maximum yield strengths ranging from 30 to 80 kPa for applied magnetic field of 150-250 kA/m. Our MR fluids typically have 20-40 percent iron by volume.
