NBN EN 13981-4 : 2007

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Ordering information
5 Requirements
   5.1 Production and manufacturing processes
   5.2 Quality assurance
   5.3 Alloys, chemical composition and tempers
   5.4 Mechanical properties of forgings
        5.4.1 Mechanical properties of forgings under
              static loading
        5.4.2 Mechanical properties of forgings under
              cyclic loading
   5.5 Mechanical properties of welded joints
        5.5.1 General
        5.5.2 Mechanical properties of welded joints under
              static loading
        5.5.3 Mechanical properties of welded joints under
              cyclic loading
   5.6 Freedom from surface defects
   5.7 Tolerances on dimensions and form
6 Qualification procedures
   6.1 First-off article approval procedure
   6.2 Additional qualification procedure
7 Sampling and test methods
   7.1 General
   7.2 Analysis of chemical composition
   7.3 Tensile test
   7.4 Preparation of test pieces for the testing of
        welded joints
   7.5 Tensile testing on welded joints
   7.6 Fatigue testing (parent material and welded joints)
   7.7 Dye penetrant testing
   7.5 Tensile testing on welded joints
   7.6 Fatigue testing (parent material and welded joints)
   7.7 Dye penetrant testing
   7.8 Metallographic
   7.9 Visual inspection
   7.10 Measurement of dimensions
   7.11 Ultrasonic testing
8 Traceability
9 Marking of forgings
10 Declaration of conformity
11 Record keeping
12 Packaging
13 Application and use
14 Complaints of non-conformity
Annex A (normative) Mechanical properties of alloys
        EN AW-6061 and EN AW-6110A
Annex B (normative) Test pieces for fatigue testing
Annex C (informative) Guidelines for application and use
   C.1 Selection of alloys
   C.2 Fatigue design
   C.3 Welding
Annex D (normative) Chemical composition of EN AW-6110A
        [EN AW-Al Mg0,9Si0,9MnCu]
Bibliography

Specifies requirements for forgings (hand forgings, die forgings) which contribute to the structural properties of the railcar bodyshell and other major structural components.