BS M 56:1985
Current
The latest, up-to-date edition.
Methods for determination of density and relative density of polytetrafluoroethylene (PTFE) tubing for aerospace applications
Hardcopy , PDF
English
28-02-1985
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National foreword
Committees responsible
Method
0 Introduction
1 Scope and field of application
2 Definitions
3 Apparatus
4 Immersion liquids
5 Specimens
6 Procedures
Table
Liquid systems for density gradient columns
Figure
Preconditioning cycle for method C procedure
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.
| Committee |
ACE/69
|
| DevelopmentNote |
Also numbered as ISO 7258 Supersedes 81/80541 DC (08/2005) Reviewed and confirmed by BSI, January 2015. (12/2014)
|
| DocumentType |
Standard
|
| Pages |
8
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
This International Standard specifies three methods for the determination of the density and relative density of polytetrafluoroethylene (PTFE) tubing used in the manufacture of medium and high pressure, high temperature, PTFE hose assemblies for aerospace applications:
- Method A – Density gradient column method without a preconditioning heating and cooling cycle.
- Method B – Displacement of water and determination of change of weight method.
- Method C – Density gradient column method with a preconditioning heating and cooling cycle.
| SAEITC TSC47-012_04 | POLYTETRAFLUOROETHYLENE (PTFE) HOSE ASSEMBLIES (WIRE REINFORCED) FOR MEDIUM AND HIGH PRESSURE FLUID SYSTEMS IN AIRCRAFT |
| 96/707468 DC : DRAFT JUN 1996 | ISO/DIS 8829-1 - AEROSPACE - TEST METHODS FOR POLYTETRAFLUOROETHYLENE (PTFE) INNERTUBE HOSE ASSEMBLIES - PART 1: METALLIC (STAINLESS STEEL) BRAID |
| DEFSTAN 47-12/4(1987) : 1987 | POLYTETRAFLUOROETHYLENE (PTFE) HOSE ASSEMBLIES (WIRE REINFORCED) FOR MEDIUM AND HIGH PRESSURE FLUID SYSTEMS IN AIRCRAFT |
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