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    <title>Weld Star  from TEC Products Ltd</title>
    <link>http://www.tecproducts.co.uk/rss/1/productlistings_rss/m113::432</link>
    <description></description>
    <copyright>Copyright 2026 TEC Products Ltd</copyright>
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    <lastBuildDate>Fri, 09 Oct 2026 02:05:53 +0100</lastBuildDate>
    <pubDate>Fri, 09 Oct 2026 02:05:53 +0100</pubDate>
              <item>
              <pubDate>Fri, 09 Oct 2026 02:05:53 +0100</pubDate>
              <title>Weld Star Weldstar ER4043 AlSi5 Aluminium TIG Filler Wire 1.6, 2.4 &amp; 3.2MM - 2.5KG Pack</title>
              <description><a href="http://www.tecproducts.co.uk/welding-supplies-consumables-c6/tig-filler-wire-brazing-rods-c129/aluminium-tig-filler-rods-c194/weld-star-weldstar-er4043-alsi5-aluminium-tig-filler-wire-1-6-2-4-3-2mm-2-5kg-pack-p4916"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.tecproducts.co.uk/images/weld-star-weldstar-er4043-alsi5-aluminium-tig-filler-wire-1-6-2-4-3-2mm-2-5kg-pack-p4916-6950_thumb.jpg" alt="Weld Star Weldstar ER4043 AlSi5 Aluminium TIG Filler Wire 1.6, 2.4 &amp; 3.2MM - 2.5KG Pack"  class="lazyload" /></a>
<p><a href="http://www.tecproducts.co.uk/welding-supplies-consumables-c6/tig-filler-wire-brazing-rods-c129/aluminium-tig-filler-rods-c194/weld-star-weldstar-er4043-alsi5-aluminium-tig-filler-wire-1-6-2-4-3-2mm-2-5kg-pack-p4916">Weld Star Weldstar ER4043 AlSi5 Aluminium TIG Filler Wire 1.6, 2.4 &amp; 3.2MM - 2.5KG Pack</a></p>
<p>Weldstar 4043 AlSi5 Aluminium TIG Filler Wire 1.6, 2.4 &amp;amp; 3.2MM - 2.5KG Pack
Aluminium TIG Filler wire for welding aluminium alloys with a maximum 2% alloying elements. Including aluminium alloys containing up to 7% Si.
Features and Applications:
The silicon addition results in improved fluidity (wetting action), making the alloy the preferred choice for welders.
ER 4043 is not sensitive to weld cracking and produces bright, almost smut-free welds. Not recommended for anodizing.
Thicker sections should be preheated to (150°C) prior to welding.
Typically used on many industrial manufacturing sectors, such as automotive, production of mobile equipment and shipbuilding etc.
Test Certificates can be found online @wilkinsonstar247.com
&amp;nbsp;&amp;nbsp;
Typical Base Materials
AlMgSi 0, AlSiMg (A), AlSi 1 MgMn, AlMg1SiCu, 3.3206, 3.3210, 3.2315, 3.3211, EN AW 6060, EN AW 6005A, EN AW 6082, EN AW 6061, EN AC 45000*
* Illustrative, not exhaustive list
&amp;nbsp;



Standards


EN ISO&amp;nbsp;18273 - S Al 4043 (AlSi5)


AWS A5.10 - ER 4043



&amp;nbsp;



Chemical Composition %&amp;nbsp;(Typical)


Si%
Fe%
Cu%
Mn%
Mg%
&amp;nbsp;
&amp;nbsp;


5.0198
0.1578
0.0124
0.0035
0.0051
&amp;nbsp;
&amp;nbsp;


&amp;nbsp;
&amp;nbsp;
&amp;nbsp;
&amp;nbsp;
&amp;nbsp;
&amp;nbsp;
&amp;nbsp;


Zn%
Ti%
Be%
Al%
&amp;nbsp;
&amp;nbsp;
&amp;nbsp;


0.0036
0.0177
&amp;lt;0.0001
Rem.
&amp;nbsp;
&amp;nbsp;
&amp;nbsp;



&amp;nbsp;



Mechanical Properties


Tensile Strength
≥120 MPa
&amp;nbsp;


Yield Strength
≥40 MPa
&amp;nbsp;


Elongation
≥8 %
&amp;nbsp;



Mechanical properties are approximate and may vary based on the heat, shielding gas, welding parameters and other factors.
&amp;nbsp;
Shielding Gases
EN ISO 14175 - TIG: I1, I3
&amp;nbsp;
Welding Positions
EN ISO 6947 - PA, PB, PC, PD, PE, PF, PG</p></description>
              <guid>http://www.tecproducts.co.uk/welding-supplies-consumables-c6/tig-filler-wire-brazing-rods-c129/aluminium-tig-filler-rods-c194/weld-star-weldstar-er4043-alsi5-aluminium-tig-filler-wire-1-6-2-4-3-2mm-2-5kg-pack-p4916</guid>
              <link>http://www.tecproducts.co.uk/welding-supplies-consumables-c6/tig-filler-wire-brazing-rods-c129/aluminium-tig-filler-rods-c194/weld-star-weldstar-er4043-alsi5-aluminium-tig-filler-wire-1-6-2-4-3-2mm-2-5kg-pack-p4916</link>
            </item>
          <item>
              <pubDate>Sat, 12 Sep 2026 02:05:43 +0100</pubDate>
              <title>Weld Star Aluminium ER4043 AlSi5 MIG Wire 2KG Reel</title>
              <description><a href="http://www.tecproducts.co.uk/welding-supplies-consumables-c6/mig-welding-wire-c18/aluminium-mig-wire-c200/weld-star-aluminium-er4043-alsi5-mig-wire-2kg-reel-p3817"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.tecproducts.co.uk/images/weld-star-aluminium-er4043-alsi5-mig-wire-2kg-reel-p3817-8052_thumb.jpg" alt="Weld Star Aluminium ER4043 AlSi5 MIG Wire 2KG Reel"  class="lazyload" /></a>
<p><a href="http://www.tecproducts.co.uk/welding-supplies-consumables-c6/mig-welding-wire-c18/aluminium-mig-wire-c200/weld-star-aluminium-er4043-alsi5-mig-wire-2kg-reel-p3817">Weld Star Aluminium ER4043 AlSi5 MIG Wire 2KG Reel</a></p>
<p>Aluminium ER4043 AlSi5 MIG Wire 2KG Reel
200MM Spool Diameter&amp;nbsp;
Why use 4043 grade Aluminium wire?
&amp;nbsp;


General Purpose Welding: 4043 is often chosen as a general-purpose aluminum welding wire because it can be used for a wide range of aluminum alloys. It&#039;s suitable for welding 3003, 3004, 5052, 6061, and other common aluminum alloys.


Good Fluidity: 4043 wire has good fluidity during welding, which means it flows smoothly and creates clean and aesthetically pleasing welds.


Low Melting Point: It has a lower melting point compared to some other aluminum welding wires, making it suitable for thin aluminum materials and reducing the risk of burn-through.


Low Hot Cracking Sensitivity: 4043 wire has relatively low hot cracking sensitivity, which means it is less likely to crack during the welding process, especially when used on aluminum alloys with a high thermal expansion coefficient.


Corrosion Resistance: While not as corrosion-resistant as 5356 aluminum welding wire, 4043 still offers reasonable corrosion resistance, making it suitable for many applications.


Heat-Treatable Alloys: It is commonly used for welding heat-treatable aluminum alloys because it minimizes the risk of affecting the heat treatment properties of the base metal.


Marine and Automotive Applications: 4043 wire is often used in marine and automotive industries for tasks such as repairing aluminum boats or welding components in automotive applications.

</p></description>
              <guid>http://www.tecproducts.co.uk/welding-supplies-consumables-c6/mig-welding-wire-c18/aluminium-mig-wire-c200/weld-star-aluminium-er4043-alsi5-mig-wire-2kg-reel-p3817</guid>
              <link>http://www.tecproducts.co.uk/welding-supplies-consumables-c6/mig-welding-wire-c18/aluminium-mig-wire-c200/weld-star-aluminium-er4043-alsi5-mig-wire-2kg-reel-p3817</link>
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