EN ISO 14270:2016

European foreword
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Test pieces and specimens
5 Preparation of mechanized peel test specimens
6 Peel testing procedure and test equipment
7 Re-test
8 Test report
Annex A (normative) - Measurement of seam weld size
Annex B (informative) - Influence of spot weld position
        on test results
Annex C (informative) - Examples of bending tools
Annex D (informative) - Determination of the bending
        centre position with press brake systems
Bibliography

ISO 14270:2016 specifies specimen dimensions and a testing procedure for mechanized peel testing of single spot, seam and embossed projection welds, in overlapping sheets, in any metallic material of thickness 0,5 mm to 3 mm, where the welds have a maximum diameter of 7√t (where t is the sheet thickness in mm).For welds of diameter between 5√t and 7√t, the peel strength values obtained may be lower than expected when using the recommended test specimen dimensions because the test specimen width is designed for welds of diameter of 5√t or less.The object of mechanized peel testing is to determine the peel strength that the test specimen can sustain.