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4043 Alloy

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Alloy Characteristics

Alloy 4043 is one of the oldest and most widely used welding and brazing alloys.  Almigweld and altigweld 4043 can be classified as a general purpose type filler alloy.  The silicon additions result in improved fluidity (wetting action) to make the alloy a preferred choice by welders.  The alloy is less sensitive to weld cracking and produces brighter, almost smut free welds.


Welding Filler Wire
Spray and Flame Metallizing Wire

Typical Applications

  • Trade designation: ALMIGWELD and ALTIGWELD
  • Non-Heat treatable
  • Similar to AlSi5 (Germany), BS N21 (United Kingdom)
  • ISO designation: AlSi5
  • Principle alloying elements: Silicon
  • Applicable specifications: ANSI/AWS A5.10 (ER & R), AMS 4190

Packaging Options