Test pieces are measured, heated in a furnace for a specified temperature and time, and remeasured. The percentage permanent change in dimensions is then calculated.

BS 1902-5-5.10:1986
Original price was: $264.16.$132.00Current price is: $132.00.
Methods of testing refractory materials. Refractory and thermal properties-Determination of permanent change in dimensions on heating of dense shaped products (methods 1902-510)
BSI Group , 11/28/1986
Pages: 10

