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Maximum service temperature is a measure indicating the maximum continuous temperature at which an insulation material can operate without any degradation in thermal insulation performance.MST is either measured according to:aximum Service Temperature (MST) under 500Pa â a guarantee that can be used for design. To estimate the highest continuous operating temperature at which a product can be used, a variety of methods exists.
1 Note that the range of maximum service temperature does not mean the range of temperature in which the material must be used! 2  It may be assumed that any operating temperature below the maximum service temperature down to zero degrees Centigrade is safe in design. For prolonged loading the maximum stress will be lower because creep (permanent stretching over time) will occur. 2  The data for a material on the selection chart shows the range in which the maximum service temperature fall (since a given material on the chart will include many different variants with the same name).