ASTM D6793 Bulk Modulus
The compressibility of a fluid is termed Bulk Modulus and is the unit volume change per unit volume of sample at the selected pressure. The compressibility of a fluid changes with pressure and temperature. In the case of Mil-H-83282, measurement of Bulk Modulus is taken at 40°C between 1,000 and 10,000 psi.
The value is useful for fluid specifications in hydraulic systems. Specification requirements for Mil-H-83282 have a minimum value of 1.379 x 106kPa.