Foreword
1 Scope
2 Normative references
3 Terminology
3.1 Terms and definitions
3.2 Abbreviated terms and symbols
4 Requirements for PTFE semi-finished products
4.1 General
4.2 Dimensions and dimensional tolerances
4.3 Tensile strength and percentage elongation at
break
4.4 Dimensional stability
4.5 Density
4.6 Hardness
4.7 Colour
4.8 Dielectric strength (DS), breakdown voltage
and electrical flaws
4.9 Requirements that may be specified depending
on the specific application
5 Format for presenting a specification
5.1 General
5.2 Order of presenting codes
5.3 Examples of coding a specification
Annex A (informative) Standard specifications for
semi-finished products of polytetrafluoroethylene