National foreword<br>National Annex NA (informative) - Bibliography<br>Introduction<br>1 Scope<br>2 Normative references<br>3 Symbols and designations<br>4 Principle<br>5 Test equipment<br>6 Test pieces<br>7 Procedure<br>8 Test report<br>Annex A (informative) - International comparison of symbols <br> used in the determination of the<br> tensile strain hardening exponent<br>Bibliography