mrmalcolm
Marine/Ocean
- Jan 24, 2024
- 31
Range of filler material for welding procedures qualification in ISO 15614-1
ISO 15614-1, 8.4.4 gives the following requirements,
Quote
For level 2: Filler materials cover other filler materials as long as, according to the designation in the appropriate international standard for the filler material, they have equivalent mechanical properties, same type of covering or flux core, same nominal chemical composition and the same or lower hydrogen content.
When impact testing is required by the application standard at temperatures less than -20 ℃, for processes 111, 114, 12, 136 and 132 according to ISO 4063, the range of validity is restricted to the manufacturer trade name of the filler material used in the procedure test. In this case, it is also permissible to change the manufacturer of filler material to another with the same compulsory part of the designation provided one additional test piece is welded using the maximum heat input qualified and only weld metal impact test specimens shall be tested. This does not apply to solid wire and rods with the same designation and nominal chemical compositions.
Unquote
According to this requirement, for solid wire and rods, even if the temperature is below -20 ℃, other filler materials with the same designation and nominal chemical compositions is allowed, right?
Why can the requirements be relaxed for solid wire and rods but not for manual welding rods?
ISO 15614-1, 8.4.4 gives the following requirements,
Quote
For level 2: Filler materials cover other filler materials as long as, according to the designation in the appropriate international standard for the filler material, they have equivalent mechanical properties, same type of covering or flux core, same nominal chemical composition and the same or lower hydrogen content.
When impact testing is required by the application standard at temperatures less than -20 ℃, for processes 111, 114, 12, 136 and 132 according to ISO 4063, the range of validity is restricted to the manufacturer trade name of the filler material used in the procedure test. In this case, it is also permissible to change the manufacturer of filler material to another with the same compulsory part of the designation provided one additional test piece is welded using the maximum heat input qualified and only weld metal impact test specimens shall be tested. This does not apply to solid wire and rods with the same designation and nominal chemical compositions.
Unquote
According to this requirement, for solid wire and rods, even if the temperature is below -20 ℃, other filler materials with the same designation and nominal chemical compositions is allowed, right?
Why can the requirements be relaxed for solid wire and rods but not for manual welding rods?
