{"id":64259,"date":"2025-11-03T21:55:38","date_gmt":"2025-11-03T20:55:38","guid":{"rendered":"https:\/\/spawlab.pl\/?post_type=product&p=64259"},"modified":"2025-11-03T21:56:42","modified_gmt":"2025-11-03T20:56:42","slug":"bohler-union-alsi-5-12-x-7kg-s-al-4043a-er4043-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopi-2","status":"publish","type":"product","link":"https:\/\/spawlab.pl\/en\/produkt\/bohler-union-alsi-5-12-x-7kg-s-al-4043a-er4043-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopi-2\/","title":{"rendered":"Bohler UNION AlSi 5 1,2 x 7kg; S Al 4043A ; ER4043 (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia)"},"content":{"rendered":"
\n

Bohler brand products , valued worldwide, especially in the industrial sector for their quality, reliability and durability. Available today from us as an Official Distributor of this Brand <\/p>\n

Feel free to try this product and you won’t want for anything else<\/strong><\/p>\n

\"\"<\/p>\n

? B\u00f6hler UNION AlSi 5 1.2 mm x 7 kg welding wire – Professional quality for aluminum welders<\/strong><\/h3>\n

B\u00f6hler UNION AlSi 5<\/strong> welding wire with a diameter of 1.2 mm<\/strong> and a weight of 7 kg<\/strong> is a high-performance solid GMAW (MIG) wire<\/strong> for welding aluminum<\/strong> alloys<\/strong> containing up to 2% alloying elements<\/strong> and up to 7% silicon (Si)<\/strong>. Importantly, thanks to its excellent weld pool fluidity<\/strong>, it provides a stable arc and aesthetically<\/strong> pleasing welds<\/strong>, making it an ideal choice for industrial and workshop applications<\/strong>. <\/p>\n

Not without significance is the fact that B\u00f6hler UNION AlSi 5<\/strong> is characterized by exceptional resistance to atmospheric corrosion. Therefore, it is ideal for truck body manufacturing, tank construction and aluminum casting repairs<\/strong>. What’s more, its chemical composition minimizes the risk of hot cracks, resulting in better quality and durability of the weld<\/strong>. <\/p>\n

\n

? Key features of B\u00f6hler UNION AlSi 5 1.2 mm x 7 kg wire<\/strong><\/h2>\n

\u2705 Professional GMAW (MIG) welding wire<\/strong> – ideal for aluminum and its alloys.
\n\u2705 Diameter 1.2 mm, spool 7 kg<\/strong> – optimal for a wide range of applications.
\n\u2705 Compliance with international standards:<\/strong><\/p>\n

    \n
  • AWS A5.10 – ER4043<\/strong><\/li>\n
  • EN ISO 18273 – S Al 4043A (AlSi5(A))<\/strong>
    \n\u2705 Very smooth weld pool<\/strong> – provides easy weld guidance.
    \n\u2705 Excellent corrosion resistance<\/strong> – increases the durability of the joints.
    \n\u2705 Not suitable for anodizing for decorative purposes<\/strong>.
    \n\u2705 Thorough cleaning of the edges of the welded material is required before welding<\/strong>.<\/li>\n<\/ul>\n

    Due to these properties, B\u00f6hler UNION AlSi 5<\/strong> wire is excellent for use in:
    \n? Aluminum constructions<\/strong>
    \n? Production and repair of truck bodies<\/strong>
    \n? Construction of tanks and architectural elements<\/strong>
    \n? Repairs of aluminum castings<\/strong><\/p>\n

    \n

    ? Technical specifications – B\u00f6hler UNION AlSi 5 1.2 mm x 7 kg<\/strong><\/h3>\n

    ? Wire type:<\/strong> Solid, GMAW (MIG)
    \n? Wire diameter:<\/strong> 1.2 mm
    \n? Spool weight:<\/strong> 7 kg
    \n? Classification:<\/strong><\/p>\n

      \n
    • AWS A5.10 – ER4043<\/strong><\/li>\n
    • EN ISO 18273 – S Al 4043A (AlSi5(A))<\/strong>
      \n? Wire chemical composition (%):<\/strong><\/p>\n
        \n
      • Si (silicon):<\/strong> 4.5 – 6.0%<\/li>\n
      • Fe (iron):<\/strong> < 0.6%<\/li>\n
      • Cu (copper):<\/strong> < 0.3%<\/li>\n
      • Mn (manganese):<\/strong> < 0.15%<\/li>\n
      • Mg (magnesium):<\/strong> < 0.2%<\/li>\n
      • Zn (zinc):<\/strong> < 0.10%<\/li>\n
      • Al (aluminum):<\/strong> balance
        \n? Mechanical properties of the alloy:<\/strong><\/li>\n
      • Yield strength (Rp0.2):<\/strong> \u2265 70 MPa<\/li>\n
      • Tensile strength (Rm):<\/strong> \u2265 130 MPa<\/li>\n
      • Elongation (A):<\/strong> \u2265 16%
        \n? Recommended welding conditions:<\/strong><\/li>\n
      • Shielding gas:<\/strong> Argon (I1) or argon-helium mixtures (I3).<\/li>\n
      • Welding current:<\/strong> DC (+).<\/li>\n
      • Material preparation:<\/strong> Heating to 150 – 200\u00b0C<\/strong> for thicker materials.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
        \n

        ? Why should you choose B\u00f6hler UNION AlSi 5 wire?<\/strong><\/h3>\n

        \u2714 Top quality from B\u00f6hler<\/strong>, the world leader in welding technology.
        \n\u2714 Excellent resistance to corrosion and hot cracking<\/strong> – durable and aesthetically pleasing welds.
        \n\u2714 Minimal chipping and stable arc<\/strong> – comfort and precision work.
        \n\u2714 Ideal for professional applications<\/strong> – it will work well in both workshops and large industrial plants.<\/p>\n

        As an official distributor of B\u00f6hler Welding<\/strong>, we offer original products at competitive prices<\/strong>. Check out our offer and see why professionals choose B\u00f6hler UNION AlSi 5<\/strong>! <\/p>\n<\/div>\n

        \"\"<\/p>\n","protected":false},"excerpt":{"rendered":"

        B\u00f6hler UNION AlSi 5 1.2 mm x 7 kg<\/strong> is a high-quality GMAW (MIG) welding wire<\/strong> for aluminum alloys containing up to 7% silicon (Si)<\/strong>. It provides a stable arc, very smooth weld pool<\/strong> and high corrosion resistance. Ideal for aluminum structures, truck bodies and casting repairs.<\/strong> Meets AWS A5.10 – ER4043 and EN ISO 18273 – S Al 4043A<\/strong> standards. Buy now from an official B\u00f6hler Welding distributor!<\/strong> <\/p>\n","protected":false},"featured_media":64257,"template":"","meta":{"inline_featured_image":false},"product_brand":[772],"product_cat":[476,475,538,540],"product_tag":[11870,11564,5272,4431,12078],"class_list":{"0":"post-64259","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_brand-bohler","7":"product_cat-accessories","8":"product_cat-accessories-parts","9":"product_cat-mig-mag-en-3","10":"product_cat-welding-wire","11":"product_tag-1-0mm-wire-en","12":"product_tag-1-2mm-wire","13":"product_tag-mro-en","14":"product_tag-voestalpine-bohler-welding-en","15":"product_tag-welding-of-dissimilar-steels","17":"first","18":"onbackorder","19":"taxable","20":"shipping-taxable","21":"purchasable","22":"product-type-simple"},"yoast_head":"\nBohler UNION AlSi 5 1,2 x 7kg; S Al 4043A ; ER4043 (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) - SpawLab - Welding equipment and plasma cutters - store and service<\/title>\n<meta name=\"description\" content=\"B\u00f6hler UNION AlSi 5 1.2 mm x 7 kg - high quality GMAW (MIG) welding wire for aluminum. Stable arc, very smooth weld pool and corrosion resistance. Ideal for aluminum structures, bodies and casting repairs. Order now from an official B\u00f6hler Welding distributor!\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/spawlab.pl\/en\/produkt\/bohler-union-alsi-5-12-x-7kg-s-al-4043a-er4043-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopi-2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Bohler UNION AlSi 5 1,2 x 7kg; S Al 4043A ; ER4043 (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia)\" \/>\n<meta property=\"og:description\" content=\"? B\u00f6hler UNION AlSi 5 1.2 mm x 7 kg - Professional welding wire for aluminum! ?Are you looking for an aluminum welding wire that provides a stable arc and a clean weld? B\u00f6hler UNION AlSi 5 is the choice of the best!\u2705 Diameter 1.2 mm, spool 7 kg\u2705 Excellent mechanical properties\u2705 Minimal chipping, great weld quality\u2705 Ideal for aluminum structures, tanks and casting repairs\u2705 Certified by AWS and EN ISOWe are the official distributor of B\u00f6hler Welding. Order now and see why professionals choose B\u00f6hler!? #welding #BohlerWelding #welding wire #MIGMAG #welding machines #welding machine #aluminum #welding machine #welding technology.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/spawlab.pl\/en\/produkt\/bohler-union-alsi-5-12-x-7kg-s-al-4043a-er4043-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopi-2\/\" \/>\n<meta property=\"og:site_name\" content=\"SpawLab - Welding equipment and plasma cutters - store and service\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/Spawlab\/\" \/>\n<meta property=\"article:modified_time\" content=\"2025-11-03T20:56:42+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/spawlab.pl\/wp-content\/uploads\/2025\/11\/Boehler-Welding-BS300-non-copper-coated-05-1200x1200px.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"1200\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:label1\" content=\"Price\" \/>\n\t<meta name=\"twitter:data1\" content=\"3 898,00 zł (3 169,11 zł netto)\" \/>\n\t<meta name=\"twitter:label2\" content=\"Availability\" \/>\n\t<meta name=\"twitter:data2\" content=\"On backorder\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":[\"WebPage\",\"ItemPage\"],\"@id\":\"https:\\\/\\\/spawlab.pl\\\/en\\\/produkt\\\/bohler-union-alsi-5-12-x-7kg-s-al-4043a-er4043-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopi-2\\\/\",\"url\":\"https:\\\/\\\/spawlab.pl\\\/en\\\/produkt\\\/bohler-union-alsi-5-12-x-7kg-s-al-4043a-er4043-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopi-2\\\/\",\"name\":\"Bohler UNION AlSi 5 1,2 x 7kg; S Al 4043A ; ER4043 (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) (Kopia) - SpawLab - Welding equipment and plasma cutters - store and service\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/spawlab.pl\\\/en\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/spawlab.pl\\\/en\\\/produkt\\\/bohler-union-alsi-5-12-x-7kg-s-al-4043a-er4043-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopi-2\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/spawlab.pl\\\/en\\\/produkt\\\/bohler-union-alsi-5-12-x-7kg-s-al-4043a-er4043-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopia-kopi-2\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/spawlab.pl\\\/wp-content\\\/uploads\\\/2025\\\/11\\\/Boehler-Welding-BS300-non-copper-coated-05-1200x1200px.png\",\"datePublished\":\"2025-11-03T20:55:38+00:00\",\"dateModified\":\"2025-11-03T20:56:42+00:00\",\"description\":\"B\u00f6hler UNION AlSi 5 1.2 mm x 7 kg - high quality GMAW (MIG) welding wire for aluminum. 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B\u00f6hler UNION AlSi 5 1.2 mm x 7 kg - Professional welding wire for aluminum! ?Are you looking for an aluminum welding wire that provides a stable arc and a clean weld? B\u00f6hler UNION AlSi 5 is the choice of the best!\u2705 Diameter 1.2 mm, spool 7 kg\u2705 Excellent mechanical properties\u2705 Minimal chipping, great weld quality\u2705 Ideal for aluminum structures, tanks and casting repairs\u2705 Certified by AWS and EN ISOWe are the official distributor of B\u00f6hler Welding. 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