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TWI Software News - EN ISO 15614-1 and EN ISO 9606-2 Released

TWI Software News - EN ISO 15614-1 and EN ISO 9606-2 Released


New EN ISO 15614-1:2004

A new standard has been released: EN ISO 15614-1:2004 'Specification and qualification of welding procedures for metallic materials - Welding procedure test - Part 1: Arc and gas welding of steels and arc welding of nickel and nickel alloys'. It replaces EN 288-3 which only covered steel.

The new document has quite a few changes from 288-3, some of which are major, some are clarifications and some are very minor. The changes include :

  • A completely new set of base material and filler material groupings based on CR ISO 15608:2000. There are more groups and sub-groups than previously although the ranges of approval of individual base materials remain mostly unaffected.
  • The new standard (in common with most of the new EN welding standards) is for 'qualification' rather than 'approval' of welding procedures.
  • The new standard is very specific about the use of a pWPS in preparation of a WPQR.
  • For butt welds, the two base materials should be the same thickness.
  • The ranges of approval for thickness and diameter are different and both are a little more generous than the 288-3.
  • Fillet weld throat thickness ranges of approval are different.
New EN ISO 9606-2:2004

A new edition of EN ISO 9606-2:2004 'Qualification test of welders - Fusion welding - Part 2: Aluminium and Aluminium Alloys' has been released. It supersedes BS EN 287-2:1992 which has been withdrawn. The new standard complements EN 287-1:2004 which covers the qualification of welders for welding steels. Note that 287-1:2004 is an EN standard and 9606-2 is an ISO EN standard.

Similarly to EN ISO 15614-1, there are quite a few changes in the new standard. Some of the more significant changes are highlighted below :

  • A completely new set of base material and filler material groupings based on CR ISO 15608:2000.
  • The use of back-gouging no longer affects the range of approval of joint types.
  • The use of AlMg filler material on heat treatable alloys also qualifies the use of AlSi filler materials.
  • The ranges of approval for thickness and diameter have been changed.
  • Note that for a fillet weld test, the throat thickness must be in the range 0.5t to 0.7t. This makes it very difficult to qualify fillet welds on thin sheet material.
Both Weldspec and Welderqual are currently being modified to match the new standards.