Grease the ultimate strength refers to the sample begins to flow caused by shear stress, also known as the ultimate strength of shear stress or extreme stress, referred to as the ultimate strength. Grease letter τ for the ultimate strength, expressed in Pa.
Method of lubricating greases by limit strength is SH/T 0323-92, measurement at a test temperature of lubricating greases in plastic threaded tube displacement occurs when the maximum pressure, and replace with the ultimate strength values.
Ultimate strength of grease to a large extent depends on the type of thickener and amount of grease, increase in the amount of SOAP, the ultimate strength is also increasing. Grease the ultimate strength and temperature. The higher the temperature, the fat ultimate strength of the smaller; the temperature drops, the fat ultimate strength increases. Ultimate strength under high temperatures may indicate upper limit of temperature of lubricating grease. Actual use in grease, grease between the scope of application of the ultimate strength of about 100-300Pa. In General, the fluidity of lubricating grease is often to high temperature limit values to estimate the strength of its flow, similar viscosity and low temperatures forecast to flow properly.