BS PD EN ISO/TR 17844 : 2004

Foreword
Introduction
1 Scope
2 CE-method
  2.1 Cracking test method
  2.2 Parent metal composition range
  2.3 Plate thickness and joint geometry
  2.4 Hydrogen level and welding process
      2.4.1 Hydrogen scales
      2.4.2 Selection of hydrogen scales
  2.5 Heat input
  2.6 Special considerations
      2.6.1 Conditions which might require more stringent procedures
      2.6.2 Relaxations
      2.6.3 Simplified conditions for manual metal-arc welding
  2.7 Determination of preheat
3 CET-method
  3.1 Cracking test method
  3.2 Parent metal composition range
  3.3 Plate thickness
  3.4 Hydrogen level and welding process
  3.5 Heat input
  3.6 Influence of residual stress
  3.7 Determination of preheat
      3.7.1 Calculation of the minimum preheat temperature
      3.7.2 Example for determination: numerical determination
            of the preheat temperature
      3.7.3 Example for determination: graphical determination
            of the preheat temperature
  3.8 Special considerations
      3.8.1 Reduction of hydrogen content by post heating (soaking)
      3.8.2 Welding with reduced preheating
      3.8.3 Welding with austenitic consumables
4 CE[N]-method
  4.1 Cracking test method
  4.2 Parent metal composition range
  4.3 Material thickness
  4.4 Weld metal hydrogen content and welding process
  4.5 Heat input
  4.6 Weld metal yield strength
  4.7 Determination of preheat
  4.8 Special considerations
      4.8.1 Weld metal hydrogen content
      4.8.2 Number of the weld layers and weld metal strength
      4.8.3 Restraint
      4.8.4 Weld metal hydrogen cracking
5 P[cm]-method
  5.1 General
      5.1.1 Cracking test method
      5.1.2 HAZ hardness control method
      5.1.3 Hydrogen controlled method
  5.2 Parent metal composition range
      5.2.1 Hardness controlled method
      5.2.2 Hydrogen controlled method
      5.2.3 Selection of method
      5.2.4 Hydrogen controlled method
  5.3 Plate thickness and joint geometry
      5.3.1 HAZ hardness controlled method
      5.3.2 Hydrogen controlled method
  5.4 Hydrogen levels and welding process
      5.4.1 HAZ hardness controlled method
      5.4.2 Hydrogen controlled method
  5.5 Energy input
  5.6 Special considerations
  5.7 Determination of minimum preheat
      5.7.1 Method according to value of CE
      5.7.2 HAZ hardness controlled method
      5.7.3 Hydrogen content controlled method
Annex A (informative) Comparison of the different methods
      A.1 General
      A.2 Parent metal composition range
      A.3 Plate thickness and joint geometry
      A.4 Hydrogen levels
      A.5 Heat input
      A.6 Prediction comparison
      A.7 Summary and conclusions
Annex B (informative) Abbreviations
Bibliography

Provides guidance for manual, semi-mechanized, mechanized and automatic arc welding of ferritic steels, excluding ferritic stainless steels, in all product forms.