Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 Materials
   5.1 Form
   5.2 Steel grades
   5.3 Surface conditions
6 Component design and manufacture
   6.1 Component design
       6.1.1 General
       6.1.2 Placement of projections
   6.2 Projection dimensions
       6.2.1 General
       6.2.2 Dissimilar sheet thickness
       6.2.3 Multi-weld arrays
   6.3 Ancillary manufacturing considerations
7 Welding equipment
   7.1 Welding machine
   7.2 Electrode assembly (tooling)
   7.3 Design of electrode assembly
       7.3.1 Contact face
       7.3.2 Electrode inserts
       7.3.3 Electrode cooling
       7.3.4 Location of components (tooling)
       7.3.5 Tooling design considerations
8 Weld assessment - Type tests
   8.1 General
   8.2 Test requirements
       8.2.1 Weld diameter
       8.2.2 Weld fracture mode
       8.2.3 Weld strength
       8.2.4 Visual and metallographic examination
   8.3 Weld appearance - Surface condition
   8.4 Distortion
9 Weld assessment - Routine tests
   9.1 General
   9.2 Frequency of testing
10 Repair of non-conforming assemblies
Annex A (informative) Recommendations for projection
                      welding equipment
Annex B (informative) Relationship between sheet thickness
                      and projection diameter (derived
                      from ISO 8167)
Annex C (informative) Typical projection welding conditions
Annex D (informative) Partial list of steel types applicable
                      to the standard
Bibliography