Definition of application temperatures in ISO 15614-1

[mrmalcolm]

ISO 15614
8.4.4 Filler material, manufacturer/trade name, designation
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 quivalent 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 °C, 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
How to define and determine impact testing temperature required by the application standard?According to the impact test temperature of the base material or the impact test temperature of the welding consumable?
In some application standards, such as EN13445, assuming a service temperature of 0 ℃, the required base metal test temperature is -10 ℃. At this point, the manufacturer may choose welding consumables with an impact test temperature of -20 ℃. In this case, according to ISO 15614-1 8.4.4 level2 , what is the impact test temperature required by the application standard?
Feel free to give your comments.

 

[SJones]

The quoted clause is related to range of validity (essential variables) not consumable selection. The impact test temperature is normally taken as that defined for deposited weld metal in the “application standard”. For EN 13445, you would have to look at the requirements for impact testing of welds, not parent material.

 

[mrmalcolm]

The quoted clause is related to range of validity (essential variables) not consumable selection. The impact test temperature is normally taken as that defined for deposited weld metal in the “application standard”. For EN 13445, you would have to look at the requirements for impact testing of welds, not parent material.

Dear Steve Jones
Thanks very much for your early reply.
For instance.
Steel A (the steel standard specifies an impact test temperature of -10 ℃),
Welding consumables B1 (welding consumables standard specifies impact test temperature -10 ℃)
Welding consumables B2 (the standard for welding consumables specifies an impact test temperature of -20 ℃)
Welding consumables B3 (the standard for welding consumables specifies an impact test temperature of -30 ℃)
For the welding production base material: steel A , two welding consumables (ESAB B3 grade and Lincoln B3 grade), processes 111(Manual metal arc welding),
In this case, the base material and welding consumables used for welding procedure qualification test are steel A+welding consumables B3(ESAB). Is it necessary to conduct additional tests when changing ESAB B3 grade welding consumable to Lincoln B3 grade welding consumable?
Thanks a lot.

 

[SJones]

Only if the standard governing the derivation of the weld Charpy test temperature requires a test temperature lower than -20 deg C