Temperature limits
Upper temperature limits for Microtherm® products
Microtherm® is a high temperature insulation that performs better than still air over its full working temperature range.
The working temperature limits that we quote for continuous exposure are defined as the maximum measured temperature at which the insulation shrinks less than 2 % in the dimensions perpendicular to the direction of pressing, in a furnace under full soak conditions according to all of ASTM C356, ISO 2477 and EN 1094-6.
This is an extremely demanding performance requirement. In most applications with single sided heating, Microtherm® may withstand higher temperatures but we will not guarantee its performance as so many different factors can have an influence.
When we quote maximum working temperature limits it is on the basis of a controlled level of shrinkage under full heat soak conditions.Normal applications involve single sided heating. Under these conditions we can say that although the upper continuous exposure limit for Microtherm® Super A is quoted as 1150 °C (2102 °F), in some situations it may be possible for the insulation to withstand a maximum intermittent exposure temperature of 1200 °C (2192 °F).
The same advice can be given for Microtherm® SteelFlex+ which, under the right conditions, may withstand intermittent exposure temperatures up to 1100 °C (2012 °F).
Please contact our specialists for further advice on the capabilities of our materials.