A Technical Guide to Material Viscosity & Shore Hardness

Viscosity

Viscosity is a measurement of how resistant a fluid is when attempts are made to move through it. A fluid with low viscosity of said to be 'thin', whilst a high viscosity is said the be 'thick' and more viscous. Units: mPa.s = Millipascal seconds Conversion = mPa.s = cPs = cSt x density of fluid

Hardness

The hardness of a material can be defined by it's resistance to a permanent indentation. Hardness is measured using Shore Degrees, ranging across 3 scales: '00', 'A' and 'D'.