1.1 This standard prescribes the method for measurement of coefficient of linear thermal expansion at low temperatures of rigid cellular thermal insulation materials.
1.2 The test is not designed to give information about long-term exposure to low temperature which may alter the measured coefficient of thermal expansion.
Note — Care should be taken in applying the value obtained in this test to calculate the overall coefficient of expansion of composite products of which the material under test is a part.
IS 11239 Pt.7-1985 history
1985IS 11239 Pt.7-1985 Test methods for rigid cellular insulation materials Part 7 Coefficient of linear thermal expansion at low temperatures