EN ISO 1924-2:2008

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
6 Calibration and adjustment of apparatus
7 Sampling and preparation of test pieces
   7.1 Sampling
   7.2 Conditioning
   7.3 Preparation of test pieces
8 Procedure
9 Calculation and report
   9.1 General
   9.2 Tensile strength
   9.3 Tensile index
   9.4 Strain at break
   9.5 Tensile energy absorption
   9.6 Tensile energy absorption index
   9.7 Modulus of elasticity
10 Precision
   10.1 General
   10.2 Repeatability
   10.3 Reproducibility
11 Test report
Annex A (normative) - Calibration of the tensile testing machine
Bibliography

ISO 1924-2:2008 specifies a method for measuring the tensile strength, strain at break and tensile energy absorption of paper and board, using a testing machine operating at a constant rate of elongation (20 mm/min). ISO 1924-2:2008 also specifies equations for calculating the tensile index, the tensile energy absorption index and the modulus of elasticity.Testing in conformance with ISO 1924-2:2008 always includes the measurement of tensile strength. Measurement or calculation of other properties is subject to agreement between the parties concerned.ISO 1924-2:2008 is applicable to all papers and boards, including papers with a high strain at break if the results are within the capacity of the testing machine. It also applies to the components of corrugated board but not, however, to corrugated board itself.