Methods for determination of density and relative density of polytetrafluoroethylene (PTFE) tubing for aerospace applications.
NORMA vydána dne 28.2.1985
Označení normy: BS M 56:1985
Datum vydání normy: 28.2.1985
Počet stran: 8
Přibližná hmotnost: 24 g (0.05 liber)
Země: Britská technická norma
Kategorie: Technické normy BS
Specifies three methods for the determination of the density and relative density of PTFE tubing used in the manufacture of medium and high pressure hose assemblies for aerospace applications: 1. Density gradient column method without a preconditioning heating and cooling cycle. 2. Water displacement method. 3. Density gradient column method with a preconditioning heating and cooling cycle. Status: Confirmed