UNI EN ISO 16433 : 2008

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Materials
   4.1 Form
   4.2 Steel grades
   4.3 Surface conditions
5 Component design and manufacture
   5.1 Component design
   5.2 Component manufacture
6 Process requirements
   6.1 Seam welding with wide wheels
   6.2 Seam welding with thin wheels
   6.3 Mash seam welding
   6.4 Wire seam welding
   6.5 Wide-electrode seam welding
   6.6 Foil seam welding
7 Welding equipment
   7.1 Welding machine
   7.2 Electrodes (wheels, mandrels, pads, backing bars)
        7.2.1 Electrode materials
        7.2.2 Electrode dimensions
   7.3 Electrode-wheel cooling
8 Weldability assessment
9 Weld assessment - Type tests
   9.1 Test pieces
        9.1.1 General
        9.1.2 Manual peel test piece
        9.1.3 Mechanised peel test piece
        9.1.4 Pressure test
        9.1.5 Metallurgical examination
   9.2 Test requirements
        9.2.1 Weld dimensions
        9.2.2 Manual peel test
        9.2.3 Mechanised peel test
        9.2.4 Pressure test
        9.2.5 Visual and metallurgical examination
   9.3 Acceptance requirements
10 Weld assessment - routine tests
   10.1 General
   10.2 Batch testing
   10.3 Test pieces and test procedures
   10.4 Number of tests
   10.5 Test requirements
11 Routine production weld quality-control requirements
   11.1 Weld size - nugget width
   11.2 Weld dimensions
   11.3 Weld failure mode
   11.4 Weld appearance - surface condition
   11.5 Distortion
12 Reclamation of non-conformant assemblies
Annex A (informative) Welding equipment
Annex B (informative) Typical seam welding conditions
Annex C (Informative) Partial list of steel types applicable
                      to the standard
Bibliography

Specifies requirements for resistance seam welding in the fabrication of assemblies of uncoated and metallic coated low carbon steel comprising two sheets of metal, where the maximum single sheet thickness of components to be welded is within the range 0,4 mm to 3 mm for the following materials: - uncoated steels; - hot-dip zinc or iron-zinc alloy (galvannealed) coated steel; - electrolytic zinc, zinc-iron, or zinc-nickel coated steel; - aluminium coated steel; - zinc-aluminium coated steel.