EN ISO 12004-2:2008

Foreword
Introduction
1 Scope
2 Symbols and abbreviated terms
3 Principle
4 Test pieces and equipment
5 Analysis of strain profile and measurement of
  epsilon[1] - epsilon[2] pairs
6 Documentation
7 Test report
Annex A (normative) Second derivative and "filtered"
        second derivative
Annex B (normative) Calculation of the width of the fit
        window
Annex C (normative) Evaluation of the inverse best-fit
        parabola on the "bell-shaped curve"
Annex D (normative) Application/Measurement of
        grid - Evaluation with magnifying glass or
        microscope
Annex E (informative) Tables of experimental data for
        validation of calculation programme
Annex F (normative) Representation and mathematical
        description of FLC
Annex G (informative) Examples of critical cross-sectional
        data
Annex H (normative) Flowchart from measured strain
        distributions to FLC values
Bibliography

ISO 12004-2:2008 specifies the testing conditions to be used when constructing a forming-limit curve (FLC) at ambient temperature and using linear strain paths. The material considered is flat, metallic and of thickness between 0,3 mm and 4 mm.