AlcoTec R 4047 ALTIGWELD Aluminium Rod

AWS A5.10 (ER & R 4047) TIG Welding Filler Rod.

1.6 x 1000mm – 4.54kg tube.
2.4 x 1000mm – 4.54kg tube.
3.2 x 1000mm – 4.54kg tube.

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AlcoTec R 4047 was originally developed as a brazing alloy to take advantage of its low melting point and narrow freezing range. In addition, it has a higher silicon content than 4043, which provides for increased fluidity and reduced shrinkage. The alloy produces bright and almost smut free welds. Hot cracking is significantly reduced when 4047 altigweld is used as filler alloy. The alloy may be used in applications of sustained elevated temperatures.


  • Trade designation: ALMIGWELD and ALTIGWELD
  • Non-Heat treatable –
  • AlcoTec R 4047 is similar to AlSi12 (Germany)
  • ISO designation: AlSi12
  • Principle alloying elements: Silicon
  • Applicable specifications: ANSI/AWS A5.10 (ER & R), AMS 4185

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Additional information


1.6 x 1000mm (404736062), 2.4 x 1000mm (404736094), 3.2 x 1000mm (404736125)