{"id":8306,"date":"2025-03-15T06:44:06","date_gmt":"2025-03-15T06:44:06","guid":{"rendered":"https:\/\/premiumalu.com\/?post_type=product&#038;p=8306"},"modified":"2026-07-07T08:32:49","modified_gmt":"2026-07-07T08:32:49","slug":"4643-hlinikova-slitina","status":"publish","type":"product","link":"https:\/\/premiumalu.com\/cs\/produkt\/4643-hlinikova-slitina\/","title":{"rendered":"4643 Hlin\u00edkov\u00e1 slitina"},"content":{"rendered":"<h2>What Is 4643 Aluminum Alloy?<\/h2>\n<p>4643 aluminum alloy (UNS A94643) is a 4000-series aluminum welding filler metal, primarily composed of aluminum, silicon (3.6-4.6%), and magnesium (0.10-0.30%). It was developed as a modification of the well-known 4043 filler alloy, with the key addition of magnesium to enable post-weld age hardening of the weld deposit. This makes 4643 uniquely suited for structural welding of 6xxx series aluminum alloys where higher joint strength is required after heat treatment.<\/p>\n<p>Unlike 4043, whose weld deposit remains non-heat-treatable, 4643 weld deposits can be solution heat treated and artificially aged after welding, allowing the weld joint to more closely match the T6 properties of the 6xxx base metal. This characteristic is particularly valuable for heavy-section welds on 6061, 6063, and 6082 components that will undergo post-weld heat treatment.<\/p>\n<p>4643 is classified under AWS A5.10\/A5.10M as ER4643 and is supplied primarily as bare welding wire and rod for gas tungsten arc welding (GTAW\/TIG) and gas metal arc welding (GMAW\/MIG). It retains the excellent fluidity, crack resistance, and corrosion resistance of 4043, while offering improved mechanical properties in the as-welded and post-weld aged conditions.<\/p>\n<h2>Available 4643 Aluminum Products<\/h2>\n<p>Linsy supplies 4643 aluminum primarily as welding filler wire and rod. Diameters, spool sizes, and cut lengths can be tailored to your welding process and project requirements.<\/p>\n<h3>4643 TIG Filler Rod (Cut Length)<\/h3>\n<table>\n<thead>\n<tr>\n<th>Formul\u00e1\u0159<\/th>\n<th>Specifikace<\/th>\n<th>Pr\u016fm\u011br (mm)<\/th>\n<th>D\u00e9lka (mm)<\/th>\n<th>Surface<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>4643 TIG Rod (ER4643)<\/td>\n<td>AWS A5.10 \/ ISO 18273<\/td>\n<td>1.6, 2.0, 2.4, 3.2, 4.0<\/td>\n<td>500, 1000<\/td>\n<td>Clean \/ brushed<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>4643 MIG Welding Wire (Spooled)<\/h3>\n<table>\n<thead>\n<tr>\n<th>Formul\u00e1\u0159<\/th>\n<th>Specifikace<\/th>\n<th>Pr\u016fm\u011br (mm)<\/th>\n<th>Spool Size<\/th>\n<th>Surface<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>4643 MIG Wire (ER4643)<\/td>\n<td>AWS A5.10 \/ ISO 18273<\/td>\n<td>0.8, 1.0, 1.2, 1.6, 2.4<\/td>\n<td>5 kg (D200), 15 kg (D300), 20 kg (D350)<\/td>\n<td>Clean \/ layer wound<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>4643 Bare Rod \/ Bar<\/h3>\n<table>\n<thead>\n<tr>\n<th>Formul\u00e1\u0159<\/th>\n<th>Temperament<\/th>\n<th>Pr\u016fm\u011br (mm)<\/th>\n<th>D\u00e9lka (mm)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>4643 Bare Rod \/ Bar<\/td>\n<td>F, O<\/td>\n<td>3 &#8211; 50<\/td>\n<td>1000 &#8211; 3000<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Other Forms &amp; Custom Sizes<\/h3>\n<p>4643 is a specialized filler alloy and is not commonly stocked in structural forms such as sheet, plate, or tube. If your project requires 4643 in non-standard forms or custom dimensions, contact our team to confirm feasibility and lead time.<\/p>\n<h2>4643 Specifications &amp; Equivalent Designations<\/h2>\n<table>\n<thead>\n<tr>\n<th>Standardn\u00ed syst\u00e9m<\/th>\n<th>Ozna\u010den\u00ed<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>UNS<\/td>\n<td>A94643<\/td>\n<\/tr>\n<tr>\n<td>AA \/ Aluminum Association<\/td>\n<td>4643<\/td>\n<\/tr>\n<tr>\n<td>AWS (Welding Filler)<\/td>\n<td>ER4643<\/td>\n<\/tr>\n<tr>\n<td>ISO (Welding Consumable)<\/td>\n<td>ISO 18273 \u2014 AlSi4Mg0.2<\/td>\n<\/tr>\n<tr>\n<td>EN (Welding Consumable)<\/td>\n<td>EN ISO 18273 \u2014 AlSi4Mg<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Obecn\u011b platn\u00e9 normy:<\/p>\n<ul>\n<li>AWS A5.10 \/ A5.10M \u2014 Specification for bare aluminum and aluminum-alloy welding electrodes and rods<\/li>\n<li>ISO 18273 \u2014 Welding consumables: solid wires and rods for fusion welding of aluminium and aluminium alloys<\/li>\n<li>EN ISO 18273 \u2014 European adoption of the ISO standard for aluminum welding consumables<\/li>\n<\/ul>\n<h2>Chemical Composition of 4643 Aluminum<\/h2>\n<p>Typical composition limits (per Aluminum Association registration and AWS A5.10, weight %):<\/p>\n<table>\n<thead>\n<tr>\n<th>Prvek<\/th>\n<th>Min %<\/th>\n<th>Max %<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>K\u0159em\u00edk (Si)<\/td>\n<td>3.6<\/td>\n<td>4.6<\/td>\n<\/tr>\n<tr>\n<td>\u017delezo (Fe)<\/td>\n<td>&mdash;<\/td>\n<td>0.8<\/td>\n<\/tr>\n<tr>\n<td>M\u011b\u010f (Cu)<\/td>\n<td>&mdash;<\/td>\n<td>0.10<\/td>\n<\/tr>\n<tr>\n<td>Mangan (Mn)<\/td>\n<td>&mdash;<\/td>\n<td>0.05<\/td>\n<\/tr>\n<tr>\n<td>Ho\u0159\u010d\u00edk (Mg)<\/td>\n<td>0.10<\/td>\n<td>0.30<\/td>\n<\/tr>\n<tr>\n<td>Zinek (Zn)<\/td>\n<td>&mdash;<\/td>\n<td>0.10<\/td>\n<\/tr>\n<tr>\n<td>Ostatn\u00ed, ka\u017ed\u00fd<\/td>\n<td>&mdash;<\/td>\n<td>0.05<\/td>\n<\/tr>\n<tr>\n<td>Ostatn\u00ed, celkem<\/td>\n<td>&mdash;<\/td>\n<td>0.15<\/td>\n<\/tr>\n<tr>\n<td>Hlin\u00edk (Al)<\/td>\n<td colspan=\"2\">Zbytek<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Mechanical Properties (Weld Deposit)<\/h2>\n<p>4643 is a welding filler alloy, so mechanical properties are reported for the weld deposit rather than for a wrought product form. Properties depend heavily on the base metal, joint design, welding parameters, and post-weld heat treatment condition.<\/p>\n<table>\n<thead>\n<tr>\n<th>Majetek<\/th>\n<th>Typick\u00e1 hodnota<\/th>\n<th>Stav<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Pevnost v tahu (mezn\u00ed)<\/td>\n<td>280 &#8211; 360 MPa<\/td>\n<td>Post-weld aged weld deposit on 6xxx base metal<\/td>\n<\/tr>\n<tr>\n<td>Prodlou\u017een\u00ed p\u0159i p\u0159etr\u017een\u00ed<\/td>\n<td>2.2 &#8211; 18%<\/td>\n<td>Range reflects as-welded (higher) vs. post-weld aged (lower) conditions<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Notes: In the as-welded condition, 4643 weld deposits typically exhibit lower tensile strength but higher elongation. After post-weld solution heat treatment and artificial aging (T6 condition), the Mg addition enables the weld deposit to age-harden, achieving significantly higher tensile strength &mdash; the primary advantage of 4643 over 4043. Actual properties vary with base metal composition, joint geometry, and welding parameters.<\/p>\n<h2>4643 vs 4043: Key Differences<\/h2>\n<p>4643 was developed specifically to address the limitations of 4043 in structural welding applications. The table below summarizes the critical differences:<\/p>\n<table>\n<thead>\n<tr>\n<th>Funkce<\/th>\n<th>4043 (ER4043)<\/th>\n<th>4643 (ER4643)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Composition<\/td>\n<td>Al &#8211; 5% Si<\/td>\n<td>Al &#8211; 4% Si &#8211; 0.2% Mg<\/td>\n<\/tr>\n<tr>\n<td>Si Content<\/td>\n<td>4.5 &#8211; 6.0%<\/td>\n<td>3.6 &#8211; 4.6%<\/td>\n<\/tr>\n<tr>\n<td>Mg Content<\/td>\n<td>None specified<\/td>\n<td>0.10 &#8211; 0.30%<\/td>\n<\/tr>\n<tr>\n<td>Weld Deposit Heat-Treatable<\/td>\n<td>No<\/td>\n<td>Yes (post-weld aging)<\/td>\n<\/tr>\n<tr>\n<td>Post-Weld Aged Strength<\/td>\n<td>No improvement (remains ~165 MPa)<\/td>\n<td>Significantly improved (280 &#8211; 360 MPa)<\/td>\n<\/tr>\n<tr>\n<td>Crack Resistance<\/td>\n<td>Vynikaj\u00edc\u00ed<\/td>\n<td>Vynikaj\u00edc\u00ed<\/td>\n<\/tr>\n<tr>\n<td>Fluidita<\/td>\n<td>High (higher Si content)<\/td>\n<td>Vysok\u00e1<\/td>\n<\/tr>\n<tr>\n<td>Prim\u00e1rn\u00ed pou\u017eit\u00ed<\/td>\n<td>General 6xxx welding, non-structural<\/td>\n<td>Structural 6xxx welding requiring post-weld aging<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Choose 4043 for general-purpose welding where post-weld heat treatment is not required. Choose 4643 when the welded assembly will be solution heat treated and aged, and the weld joint must achieve higher strength to match the T6 properties of the 6xxx base metal.<\/p>\n<h2>Welding Characteristics &amp; Filler Selection<\/h2>\n<h3>Base Metal Compatibility<\/h3>\n<p>4643 is recommended for welding 6xxx series aluminum alloys, including:<\/p>\n<ul>\n<li><strong>6061<\/strong> &mdash; structural, automotive, aerospace components<\/li>\n<li><strong>6063<\/strong> &mdash; architectural extrusions, window and door frames<\/li>\n<li><strong>6082<\/strong> &mdash; European structural alloy, heavy sections<\/li>\n<li><strong>6A02<\/strong> &mdash; Chinese structural alloy, forged components<\/li>\n<\/ul>\n<p>4643 can also be used for welding dissimilar 6xxx \/ 5xxx joints where the 5xxx component has low Mg content. For high-Mg 5xxx base metals (e.g., 5083, 5086), use 5356 or 5183 filler instead to avoid Mg-Si embrittlement.<\/p>\n<h3>Sva\u0159ovac\u00ed procesy<\/h3>\n<ul>\n<li><strong>GTAW (TIG):<\/strong> Use 4643 cut-length rods (1.6 &#8211; 4.0 mm). AC TIG with high-frequency start is standard for aluminum. Use pure argon shielding gas.<\/li>\n<li><strong>GMAW (MIG):<\/strong> Use 4643 spooled wire (0.8 &#8211; 2.4 mm). Pulse MIG is recommended for thin sections to control heat input and reduce distortion.<\/li>\n<\/ul>\n<h3>Post-Weld Heat Treatment<\/h3>\n<p>To achieve the full strength advantage of 4643, the welded assembly should be solution heat treated and artificially aged (T6 condition) after welding. This activates the Mg addition in the weld deposit, allowing it to age-harden alongside the 6xxx base metal. Without post-weld heat treatment, 4643 weld deposits perform similarly to 4043.<\/p>\n<h2>Key Characteristics of 4643 Aluminum<\/h2>\n<h3>Heat-Treatable Weld Deposit<\/h3>\n<p>The defining characteristic of 4643 is its ability to age-harden in the weld deposit. The 0.10-0.30% magnesium addition forms Mg&#8322;Si precipitates during artificial aging, significantly increasing weld joint strength. This makes 4643 the preferred filler for structural 6xxx welds that will be post-weld heat treated.<\/p>\n<h3>Excellent Crack Resistance<\/h3>\n<p>Like 4043, 4643 offers excellent resistance to weld cracking, particularly on 6xxx series base metals. The silicon content lowers the melting point and improves fluidity, reducing the risk of solidification cracking in the weld bead.<\/p>\n<h3>Dobr\u00e1 odolnost proti korozi<\/h3>\n<p>4643 weld deposits provide good corrosion resistance in atmospheric and mild industrial environments. The silicon-rich weld metal is generally compatible with the corrosion behavior of 6xxx base metals, making it suitable for outdoor and marine-adjacent applications.<\/p>\n<h3>Good Color Match After Anodizing<\/h3>\n<p>4643 produces a weld bead that anodizes to a color reasonably close to 6xxx base metal, though the silicon content can cause a slightly gray tone. For applications requiring a perfect color match after anodizing, consider 5356 filler for 5xxx base metals or consult our team for guidance.<\/p>\n<h2>Common Applications of 4643 Aluminum<\/h2>\n<p>4643 is used wherever structural welding of 6xxx series aluminum requires post-weld heat treatment for maximum joint strength:<\/p>\n<ul>\n<li><strong>Structural welding:<\/strong> Welded 6061-T6 structural frames, trusses, and load-bearing assemblies that undergo post-weld solution treatment and aging<\/li>\n<li><strong>Automobilov\u00fd pr\u016fmysl:<\/strong> Chassis welds, roll cages, and suspension components on 6061 and 6082 alloys where weld joint strength must match the T6 base metal<\/li>\n<li><strong>Letectv\u00ed a kosmonautika:<\/strong> Secondary structural welds on 6xxx components, including bracketry and support fittings requiring post-weld aging<\/li>\n<li><strong>Marine &amp; shipbuilding:<\/strong> Welded 6061 and 6063 superstructure components, railing systems, and deck fittings<\/li>\n<li><strong>Heavy equipment:<\/strong> Welded 6082 structural beams and plates for machinery frames and booms<\/li>\n<li><strong>Architektonick\u00e9 \u0159e\u0161en\u00ed:<\/strong> Welded 6063 extrusion assemblies for curtain walls, skylights, and decorative structures<\/li>\n<li><strong>Brazing and repair:<\/strong> Repair welding of 6xxx castings and extruded components where post-weld aging is planned<\/li>\n<\/ul>\n<h2>Processing &amp; Surface Finish Notes for 4643<\/h2>\n<p>4643 is a welding filler alloy, so processing notes focus on welding parameters and post-weld treatment rather than machining or forming:<\/p>\n<ul>\n<li><strong>Pre-weld cleaning:<\/strong> Thoroughly clean the weld zone with stainless steel brush or chemical etch to remove oxide layer. Contamination is the leading cause of porosity in aluminum welds.<\/li>\n<li><strong>GTAW (TIG):<\/strong> Use AC balance control to clean the oxide layer. Pure argon shielding at 15-25 L\/min flow rate. Preheat is generally not required for 6xxx base metals up to 6 mm thickness.<\/li>\n<li><strong>GMAW (MIG):<\/strong> Use push technique for better cleaning action. Argon shielding gas; consider Ar\/He mix for thicker sections to increase penetration and reduce porosity.<\/li>\n<li><strong>Post-weld heat treatment:<\/strong> Solution treat at 530-540&deg;C, quench, then artificially age at 160-180&deg;C for 6-10 hours. Actual parameters must match the base metal specification.<\/li>\n<li><strong>Interpass temperature:<\/strong> Keep interpass temperature below 150&deg;C to avoid excessive heat build-up and distortion, especially on thin sections.<\/li>\n<li><strong>Storage:<\/strong> Store filler wire and rods in a clean, dry environment. Keep spools in sealed bags with desiccant when not in use to prevent surface oxidation and moisture absorption.<\/li>\n<\/ul>\n<h2>Kvalitn\u00ed dokumentace a kontrola<\/h2>\n<p>Kontrola kvality ve spole\u010dnosti Linsy zahrnuje cel\u00fd proces od v\u00fdb\u011bru surovin a\u017e po kontrolu hotov\u00fdch v\u00fdrobk\u016f. Ke ka\u017ed\u00e9 objedn\u00e1vce je po v\u00fdrob\u011b p\u0159ilo\u017een certifik\u00e1t o zkou\u0161ce materi\u00e1lu (MTC) vydan\u00fd spole\u010dnost\u00ed Linsy Aluminum, kter\u00fd obsahuje v\u00fdsledky anal\u00fdzy chemick\u00e9ho slo\u017een\u00ed a mechanick\u00fdch vlastnost\u00ed konkr\u00e9tn\u00ed \u0161ar\u017ee.<\/p>\n<p>Pro z\u00e1kazn\u00edky, kte\u0159\u00ed vy\u017eaduj\u00ed ov\u011b\u0159en\u00ed t\u0159et\u00ed stranou, jsou na po\u017e\u00e1d\u00e1n\u00ed k dispozici zku\u0161ebn\u00ed protokoly spole\u010dnosti SGS za dodate\u010dn\u00fd poplatek za zkou\u0161ky. Mezi dostupn\u00e9 protokoly SGS pat\u0159\u00ed:<\/p>\n<ul>\n<li>Zpr\u00e1va spole\u010dnosti SGS o chemick\u00e9m slo\u017een\u00ed<\/li>\n<li>Zpr\u00e1va spole\u010dnosti SGS o mechanick\u00fdch vlastnostech<\/li>\n<li>Zpr\u00e1va o rozm\u011brov\u00e9 kontrole spole\u010dnosti SGS<\/li>\n<li>Zpr\u00e1va SGS o sm\u011brnic\u00edch RoHS a REACH<\/li>\n<\/ul>\n<h2>Why Choose Linsy for 4643 Aluminum<\/h2>\n<p>Linsy Aluminum is a Shenzhen-based aluminum factory with more than 20 years of industry experience, supplying 4643 welding filler and other 1000-8000 series alloys to customers across general engineering, automotive, marine, shipbuilding, construction, manufacturing, and power electronics.<\/p>\n<p>For your 4643 sourcing, this means:<\/p>\n<ul>\n<li><strong>Filler wire expertise<\/strong> across TIG cut-length rods and MIG spooled wire in standard and custom diameters<\/li>\n<li><strong>Flexibiln\u00ed podpora objedn\u00e1vek<\/strong> &mdash; both standard and mixed-spec orders, including harder-to-find filler grades<\/li>\n<li><strong>V\u00fdroba na zak\u00e1zku s n\u00edzk\u00fdm minim\u00e1ln\u00edm objednan\u00fdm mno\u017estv\u00edm<\/strong> for non-stock diameters and spool sizes, with typical custom lead time of 10-60 days<\/li>\n<li><strong>MTC ke ka\u017ed\u00e9 objedn\u00e1vce<\/strong>, plus voliteln\u00e9 testov\u00e1n\u00ed SGS na po\u017e\u00e1d\u00e1n\u00ed<\/li>\n<li><strong>Syst\u00e9m \u0159\u00edzen\u00ed v souladu s normami ISO 9001, ISO 14001 a ISO 45001<\/strong> normy<\/li>\n<\/ul>\n<h2>4643 Aluminum FAQ<\/h2>\n<h3>What is 4643 aluminum filler wire used for?<\/h3>\n<p>4643 is used as a welding filler metal for joining 6xxx series aluminum alloys (6061, 6063, 6082, 6A02). It is specifically designed for structural welds that will be post-weld heat treated, where the weld deposit must achieve higher strength through age hardening to match the T6 properties of the base metal.<\/p>\n<h3>What is the difference between 4643 and 4043?<\/h3>\n<p>4043 is an Al-Si filler (no magnesium) whose weld deposit cannot be age-hardened. 4643 adds 0.10-0.30% magnesium, which enables the weld deposit to respond to post-weld solution heat treatment and artificial aging. After aging, 4643 weld joints achieve significantly higher tensile strength than 4043 weld joints. For welds that will not be post-weld heat treated, 4043 and 4643 perform similarly.<\/p>\n<h3>Is 4643 weld deposit heat-treatable?<\/h3>\n<p>Yes. The magnesium addition in 4643 forms Mg&#8322;Si precipitates during artificial aging, which strengthens the weld deposit. This is the key advantage of 4643 over 4043. To activate this strengthening, the welded assembly must be solution heat treated and artificially aged (T6 condition) after welding.<\/p>\n<h3>What base metals can 4643 weld?<\/h3>\n<p>4643 is recommended for welding 6xxx series aluminum alloys, including 6061, 6063, 6082, and 6A02. It can also be used for some dissimilar 6xxx\/5xxx joints where the 5xxx component has low Mg content. For high-Mg 5xxx base metals (5083, 5086), use 5356 or 5183 filler to avoid Mg-Si embrittlement.<\/p>\n<h3>What welding processes work with 4643?<\/h3>\n<p>4643 is used with both GTAW (TIG) and GMAW (MIG) processes. For TIG, use 4643 cut-length rods in 1.6-4.0 mm diameter with AC current and pure argon shielding. For MIG, use 4643 spooled wire in 0.8-2.4 mm diameter with push technique and argon or Ar\/He shielding gas.<\/p>\n<h3>What diameters are available for 4643 filler wire?<\/h3>\n<p>TIG filler rods are available in 1.6, 2.0, 2.4, 3.2, and 4.0 mm diameters in 500 mm or 1000 mm cut lengths. MIG welding wire is available in 0.8, 1.0, 1.2, 1.6, and 2.4 mm diameters on 5 kg, 15 kg, or 20 kg spools. Custom diameters can be arranged on request.<\/p>\n<h3>Can 4643 be used for brazing?<\/h3>\n<p>4643 can be used for aluminum brazing applications due to its silicon content, which lowers the melting point and improves fluidity. However, for dedicated brazing applications, specialized brazing filler metals (such as 4343 or 4045) are typically more appropriate. Consult our team for guidance on your specific brazing application.<\/p>\n<h3>What standards apply to 4643 welding filler?<\/h3>\n<p>4643 welding filler is classified as ER4643 under AWS A5.10\/A5.10M (Specification for bare aluminum and aluminum-alloy welding electrodes and rods). The ISO equivalent is ISO 18273 (AlSi4Mg0.2). The Aluminum Association designation is 4643, and the UNS number is A94643.<\/p>\n<h2>\u010casto kladen\u00e9 ot\u00e1zky k objedn\u00e1vk\u00e1m obecn\u011b<\/h2>\n<h3>What is the typical lead time for custom 4643 orders?<\/h3>\n<p>For non-stock diameters or custom specifications, typical lead time is 10-60 days depending on alloy, dimensions, processing requirements, and order complexity. In-stock standard specifications can ship faster &mdash; contact our team for a specific quote.<\/p>\n<h3>Jak\u00e9 je minim\u00e1ln\u00ed mno\u017estv\u00ed objedn\u00e1vky (MOQ)?<\/h3>\n<p>Linsy supports low-MOQ custom production for non-stock 4643 items. MOQ varies by diameter, spool size, and processing scope; please share your requirements and we will confirm feasibility.<\/p>\n<h3>What documents accompany each shipment?<\/h3>\n<p>Every order ships with an MTC (Material Test Certificate) issued by Linsy Aluminum after production. Optional SGS third-party test reports are available on request at an additional testing cost.<\/p>\n<h3>Do you offer sample pieces before bulk order?<\/h3>\n<p>Yes, samples can be arranged for most standard and custom specifications. Sample cost and lead time depend on diameter and processing requirements.<\/p>\n<h3>Do jak\u00fdch region\u016f zas\u00edl\u00e1te zbo\u017e\u00ed?<\/h3>\n<p>Spole\u010dnost Linsy zas\u00edl\u00e1 zbo\u017e\u00ed do cel\u00e9ho sv\u011bta a m\u00e1 zavedenou distribu\u010dn\u00ed s\u00ed\u0165 v Evrop\u011b, Ji\u017en\u00ed Africe, Braz\u00edlii, Singapuru, Turecku, Japonsku, Ji\u017en\u00ed Koreji a ji\u017en\u00ed Asii.<\/p>","protected":false},"excerpt":{"rendered":"<p>4643 aluminum alloy is a 4000-series Al-Si-Mg welding filler metal, developed as a modification of 4043 with a magnesium addition (0.10-0.30% Mg). The Mg content enables the weld deposit to respond to post-weld aging, producing higher joint strength than 4043 on 6xxx series base metals. Linsy supplies 4643 aluminum filler wire and rod in TIG cut-length and MIG spooled formats, with custom diameters, MTC reports, and SGS testing available on request.<\/p>\n<p>\n<strong>Dostupn\u00e9 formul\u00e1\u0159e:<\/strong> TIG filler rod \/ MIG welding wire \/ bare rod<br \/>\n<strong>Common diameters:<\/strong> 0.8 &#8211; 4.0 mm<br \/>\n<strong>Base metal compatibility:<\/strong> 6061 \/ 6063 \/ 6082 \/ 6A02<br \/>\n<strong>Dokumenty t\u00fdkaj\u00edc\u00ed se kvality:<\/strong> Ke ka\u017ed\u00e9 objedn\u00e1vce je p\u0159ilo\u017eena zpr\u00e1va MTC, testy SGS na vy\u017e\u00e1d\u00e1n\u00ed<\/p>","protected":false},"featured_media":8487,"template":"","meta":{"_seopress_titles_title":"4643 Aluminum Alloy \u2014 Welding Filler Wire & Rod Supplier | Linsy Aluminum","_seopress_titles_desc":"Source 4643 aluminum welding filler wire and rod for 6xxx series welding. Heat-treatable weld deposit, ISO 9001 certified. MTC with every order. 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