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 It supersedes BS EN 287-2:1992 which has been withdrawn.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 :
Both Weldspec and Welderqual are currently being modified to match the new standards.
- 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.