EN 1668 : 1997

Foreword
Introduction
1 Scope
2 Normative references
3 Classification
4 Symbols and requirements
  4.1 Symbol for the product/process
  4.2 Symbol for strength and elongation of all-weld
      metal
  4.3 Symbol for impact properties of all-weld metal
  4.4 Symbol for the chemical composition of rods/wires
5 Mechanical tests
  5.1 General
  5.2 Preheating and interpass temperature
  5.3 Welding conditions
6 Chemical analysis
7 Technical delivery conditions
8 Designation
Annex A (informative) Bibliography

Defines requirements for classifying rods, wires and all-weld metal in the as-welded condition for tungsten inert gas welding of non alloy and fine grain steels having a minimum yield strength up to 500 N/mm in the as-welded state.