Cellular plastics — Determination of the coefficient of linear thermal expansion of rigid materials at sub-ambient temperatures
NORMA vydána dne 11.4.1985
Označení normy: ISO 4897:1985
Datum vydání normy: 11.4.1985
Počet stran: 9
Přibližná hmotnost: 27 g (0.06 liber)
Země: Mezinárodní technická norma
Kategorie: Technické normy ISO
Description / Abstract: Specifies two methods for determing the coefficient of linear thermal expansion. Method A is the preferred method, it gives a value on a large sample at a chosen temperature. Method B should be employed to obtain an average coefficient for the temperature interval between the cryogenic temperature and the ambient temperature. In an annex the test apparatures for both methods are described in detail.