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