{"id":9717,"date":"2026-01-06T11:59:55","date_gmt":"2026-01-06T11:59:55","guid":{"rendered":"https:\/\/premiumalu.com\/?post_type=product&#038;p=9717"},"modified":"2026-07-07T08:32:49","modified_gmt":"2026-07-07T08:32:49","slug":"4147-lega-di-alluminio","status":"publish","type":"product","link":"https:\/\/premiumalu.com\/it\/prodotto\/4147-lega-di-alluminio\/","title":{"rendered":"4147 Lega di alluminio"},"content":{"rendered":"<h2>What Is 4147 Aluminum Alloy?<\/h2>\n<p>4147 aluminum alloy (UNS A94147) is a high-silicon, non-heat-treatable aluminum alloy from the 4000 series, containing approximately 11\u201313% silicon (AlSi12). Unlike structural alloys such as 6061 or 7075, 4147 is engineered primarily as a brazing and welding filler material. Its high silicon content lowers the melting point to a narrow range near the aluminum-silicon eutectic (approximately 577\u2013582\u00b0C), producing excellent fluidity, clean flow, and leak-proof joints during brazing.<\/p>\n<p>4147 is closely related to 4047 (both are AlSi12-type alloys) and serves the same core function: providing a reliable filler metal for joining aluminum components in vacuum brazing, furnace brazing, and fusion welding. The alloy is typically supplied in O (Annealed) or H-series tempers and is used extensively in heat exchanger manufacturing, automotive cooling systems, and HVAC applications.<\/p>\n<h2>Available 4147 Aluminum Products<\/h2>\n<p>Linsy supplies 4147 aluminum in the product forms most relevant to brazing and filler applications. Dimensions and tolerances can be tailored to your project requirements.<\/p>\n<h3>4147 Aluminum Wire &amp; Filler Rod<\/h3>\n<table>\n<thead>\n<tr>\n<th>Forma<\/th>\n<th>Temperamento<\/th>\n<th>Diametro (mm)<\/th>\n<th>Lunghezza<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>4147 Wire (Spool)<\/td>\n<td>O, H14<\/td>\n<td>1.2 \u2013 5.0<\/td>\n<td>Coil \/ Spool<\/td>\n<\/tr>\n<tr>\n<td>4147 Filler Rod (Straight)<\/td>\n<td>O, H14<\/td>\n<td>1.6 \u2013 5.0<\/td>\n<td>500 \u2013 1000 mm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>4147 Aluminum Sheet &amp; Coil<\/h3>\n<table>\n<thead>\n<tr>\n<th>Forma<\/th>\n<th>Temperamento<\/th>\n<th>Spessore (mm)<\/th>\n<th>Larghezza (mm)<\/th>\n<th>Lunghezza (mm)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>4147 Sheet \/ Coil<\/td>\n<td>O, H14, H24<\/td>\n<td>0.3 \u2013 6.0<\/td>\n<td>500 \u2013 2600<\/td>\n<td>500 \u2013 16000<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>4147 sheet and coil are commonly used as cladding material \u2014 a thin layer of 4147 is roll-bonded onto a core alloy (such as 3003 or 6951) to create brazing sheet. When heated, the 4147 cladding melts and flows to form the brazed joint, while the core alloy retains its structural integrity.<\/p>\n<h2>4147 Specifications &amp; Equivalent Designations<\/h2>\n<table>\n<thead>\n<tr>\n<th>Sistema standard<\/th>\n<th>Denominazione<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>UNS<\/td>\n<td>A94147<\/td>\n<\/tr>\n<tr>\n<td>EN AW<\/td>\n<td>EN AW-4147 \/ AlSi12<\/td>\n<\/tr>\n<tr>\n<td>ISO<\/td>\n<td>Al Si12<\/td>\n<\/tr>\n<tr>\n<td>AA \/ SAE<\/td>\n<td>4147<\/td>\n<\/tr>\n<tr>\n<td>DIN (Germania)<\/td>\n<td>3.2581 \/ AlSi12<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Norme comunemente applicabili:<\/p>\n<ul>\n<li>ASTM B209 \u2014 Lamiere e lastre di alluminio e leghe di alluminio<\/li>\n<li>ISO 6361 \u2014 Lamiere, nastri e lastre di alluminio e leghe di alluminio lavorati<\/li>\n<li>EN 573-3 \u2014 Composizione chimica e forma dei prodotti lavorati<\/li>\n<li>AWS A5.10\/A5.10M \u2014 Bare aluminum and aluminum-alloy welding electrodes and rods (related filler designation: ER4047)<\/li>\n<\/ul>\n<h2>Chemical Composition of 4147 Aluminum<\/h2>\n<p>Typical composition limits (per Aluminum Association \/ EN standards, weight %):<\/p>\n<table>\n<thead>\n<tr>\n<th>Elemento<\/th>\n<th>Min %<\/th>\n<th>Max %<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Silicio (Si)<\/td>\n<td>11.0<\/td>\n<td>13.0<\/td>\n<\/tr>\n<tr>\n<td>Ferro (Fe)<\/td>\n<td>\u2014<\/td>\n<td>0.8<\/td>\n<\/tr>\n<tr>\n<td>Rame (Cu)<\/td>\n<td>\u2014<\/td>\n<td>0.3<\/td>\n<\/tr>\n<tr>\n<td>Manganese (Mn)<\/td>\n<td>\u2014<\/td>\n<td>0.15<\/td>\n<\/tr>\n<tr>\n<td>Magnesio (Mg)<\/td>\n<td>\u2014<\/td>\n<td>0.10<\/td>\n<\/tr>\n<tr>\n<td>Zinco (Zn)<\/td>\n<td>\u2014<\/td>\n<td>0.20<\/td>\n<\/tr>\n<tr>\n<td>Altri, ciascuno<\/td>\n<td>\u2014<\/td>\n<td>0.05<\/td>\n<\/tr>\n<tr>\n<td>Altri, totale<\/td>\n<td>\u2014<\/td>\n<td>0.15<\/td>\n<\/tr>\n<tr>\n<td>Alluminio (Al)<\/td>\n<td colspan=\"2\">Equilibrio<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Mechanical Properties of 4147 Aluminum<\/h2>\n<p>4147 is a filler alloy, not a structural alloy. The values below represent typical properties for 4147 in the annealed (O) condition. Because 4147 is not heat-treatable, mechanical properties do not vary significantly across tempers \u2014 the primary selection criterion is formability and brazing performance, not tensile strength.<\/p>\n<table>\n<thead>\n<tr>\n<th>Propriet\u00e0<\/th>\n<th>Valore tipico<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Resistenza alla trazione (finale)<\/td>\n<td>130 \u2013 160 MPa<\/td>\n<\/tr>\n<tr>\n<td>Limite di snervamento (0,2%)<\/td>\n<td>55 \u2013 90 MPa<\/td>\n<\/tr>\n<tr>\n<td>Allungamento a rottura<\/td>\n<td>5 \u2013 15 %<\/td>\n<\/tr>\n<tr>\n<td>Modulo di elasticit\u00e0<\/td>\n<td>\u2248 69 GPa<\/td>\n<\/tr>\n<tr>\n<td>Densit\u00e0<\/td>\n<td>\u2248 2.66 g\/cm\u00b3<\/td>\n<\/tr>\n<tr>\n<td>Melting Range (Solidus \u2013 Liquidus)<\/td>\n<td>\u2248 577 \u2013 582 \u00b0C<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Brazing &amp; Processing Characteristics<\/h2>\n<h3>Narrow Melting Range<\/h3>\n<p>With 11\u201313% silicon, 4147 is very close to the aluminum-silicon eutectic composition (12.6% Si, 577\u00b0C). This gives it an extremely narrow melting range of approximately 577\u2013582\u00b0C, which means the alloy transitions rapidly from solid to liquid. In brazing, a narrow melting range produces clean, controlled flow and minimizes the risk of core alloy erosion or distortion.<\/p>\n<h3>Excellent Fluidity<\/h3>\n<p>The high silicon content gives 4147 excellent fluidity when molten. This allows the filler to penetrate tight joint gaps, wick along seams by capillary action, and form uniform, leak-proof bonds \u2014 critical for heat exchanger tubes and radiator fins where joint integrity directly affects pressure retention.<\/p>\n<h3>Cladding Application<\/h3>\n<p>In brazing sheet applications, 4147 is roll-bonded as a thin cladding layer (typically 5\u201315% of total sheet thickness) onto a structural core alloy such as 3003, 3005, or 6951. During furnace or vacuum brazing, the 4147 cladding melts and flows to form joints between layers, while the higher-melting core alloy maintains its shape and structural properties.<\/p>\n<h3>Welding Considerations<\/h3>\n<p>4147 can be used as a GTAW (TIG) or GMAW (MIG) filler wire for welding aluminum components. It offers good crack resistance compared to lower-silicon fillers, particularly when welding 4xxx or 6xxx base alloys. However, it is not recommended for welding 5xxx-series (magnesium-bearing) alloys, as the combination of high silicon and magnesium can form brittle Mg\u2082Si precipitates at the weld interface.<\/p>\n<h2>Common Applications of 4147 Aluminum<\/h2>\n<p>4147 is primarily used as a brazing filler metal and cladding alloy. Its applications are concentrated in industries that rely on aluminum-to-aluminum joining for thermal management systems:<\/p>\n<ul>\n<li><strong>Scambiatori di calore per il settore automobilistico:<\/strong> Radiators, heater cores, oil coolers, intercoolers, and evaporators \u2014 where 4147 cladding enables controlled-atmosphere brazing (CAB) of multi-layer aluminum assemblies<\/li>\n<li><strong>HVAC systems:<\/strong> Air conditioning condensers, evaporator coils, and refrigeration components requiring leak-proof brazed joints<\/li>\n<li><strong>Industrial heat exchangers:<\/strong> Plate-fin heat exchangers, shell-and-tube units, and process cooling systems used in chemical and power industries<\/li>\n<li><strong>Vacuum brazing:<\/strong> Aerospace and electronics cooling assemblies where flux-free vacuum brazing is required for cleanliness and joint reliability<\/li>\n<li><strong>Filler wire for welding:<\/strong> TIG and MIG welding of 4xxx and 6xxx series aluminum components where crack-resistant filler is needed<\/li>\n<li><strong>Castable and foundry use:<\/strong> As a master alloy or silicon source in aluminum casting processes<\/li>\n<\/ul>\n<h2>Documenti di qualit\u00e0 e ispezione<\/h2>\n<p>Il controllo qualit\u00e0 presso Linsy va dalla selezione delle materie prime fino al collaudo del prodotto finito. Ogni ordine viene accompagnato da un MTC (Certificato di analisi dei materiali) rilasciato da Linsy Aluminum al termine della produzione, che riporta i risultati relativi alla composizione chimica e alle propriet\u00e0 meccaniche del lotto specifico.<\/p>\n<p>Per i clienti che necessitano di una verifica da parte di terzi, i rapporti di prova SGS sono disponibili su richiesta a un costo aggiuntivo. I rapporti SGS disponibili includono:<\/p>\n<ul>\n<li>Rapporto SGS sulla composizione chimica<\/li>\n<li>Rapporto SGS sulle propriet\u00e0 meccaniche<\/li>\n<li>Rapporto di ispezione dimensionale SGS<\/li>\n<li>Rapporto SGS su RoHS e REACH<\/li>\n<\/ul>\n<h2>Why Choose Linsy for 4147 Aluminum<\/h2>\n<p>Linsy Aluminum is a Shenzhen-based aluminum factory with more than 20 years of industry experience, supplying 4147 and other 1000\u20138000 series alloys to customers across automotive, HVAC, manufacturing, and industrial applications.<\/p>\n<p>For your 4147 sourcing, this means:<\/p>\n<ul>\n<li><strong>Specialized filler alloy supply<\/strong> \u2014 4147 wire, filler rod, and cladding sheet\/coil in standard and custom dimensions<\/li>\n<li><strong>Supporto flessibile per gli ordini<\/strong> \u2014 sia ordini standard che con specifiche miste, comprese le qualit\u00e0 pi\u00f9 difficili da reperire<\/li>\n<li><strong>Produzione personalizzata con quantit\u00e0 minime d'ordine ridotte<\/strong> per le taglie non disponibili a magazzino, con tempi di consegna personalizzati che variano in genere da 10 a 60 giorni<\/li>\n<li><strong>Lavorazione interna<\/strong> \u2014 CNC machining, laser cutting, and surface treatment support<\/li>\n<li><strong>MTC con ogni ordine<\/strong>, oltre a test SGS facoltativi su richiesta<\/li>\n<li><strong>Sistema di gestione conforme alle norme ISO 9001, ISO 14001 e ISO 45001<\/strong> standard<\/li>\n<\/ul>\n<h2>Risorse correlate<\/h2>\n<p>Use these guides to learn more about aluminum brazing filler alloys:<\/p>\n<ul>\n<li><a href=\"https:\/\/premiumalu.com\/it\/mastering-4047-alluminio-consigli-e-tecniche-degli-esperti\/\">4047 Alluminio: Consigli e tecniche degli esperti<\/a><\/li>\n<li><a href=\"https:\/\/premiumalu.com\/it\/consigli-degli-esperti-per-padroneggiare-lalluminio-4043\/\">Padroneggiare l'alluminio 4043: Consigli e tecniche essenziali<\/a><\/li>\n<li><a href=\"https:\/\/premiumalu.com\/it\/mastering-4032-alluminio-guida-essenziale\/\">Tutto quello che c'\u00e8 da sapere sull'alluminio 4032<\/a><\/li>\n<\/ul>\n<h2>4147 Aluminum FAQ<\/h2>\n<h3>What is 4147 aluminum used for?<\/h3>\n<p>4147 aluminum is primarily used as a brazing filler metal and cladding alloy for heat exchangers, radiators, and HVAC components. It is also used as TIG\/MIG filler wire for welding 4xxx and 6xxx series aluminum where crack resistance is important.<\/p>\n<h3>What is the difference between 4147 and 4047?<\/h3>\n<p>4147 and 4047 are both AlSi12-type alloys with nearly identical chemical composition (11\u201313% silicon). 4047 is the more commonly referenced designation in welding and brazing standards (e.g., AWS ER4047 \/ BAlSi-4), while 4147 is the wrought product designation. In practice, the two alloys are often used interchangeably for brazing and filler applications.<\/p>\n<h3>Is 4147 a structural alloy?<\/h3>\n<p>No. 4147 is a filler and brazing alloy, not a structural alloy. Its tensile strength (130\u2013160 MPa) is significantly lower than structural grades like 6061-T6 (290+ MPa). 4147 should not be used for load-bearing applications \u2014 its value lies in its brazing and joining performance.<\/p>\n<h3>Can 4147 be heat-treated?<\/h3>\n<p>No, 4147 is a non-heat-treatable alloy. It is supplied in O (Annealed) or strain-hardened tempers (H14, H24). Strength cannot be increased by solution heat treatment and aging.<\/p>\n<h3>What tempers are available for 4147?<\/h3>\n<p>Common tempers are O (Annealed) for maximum ductility and formability, H14 (Half-hard) for moderate strength, and H24 (Half-hard, annealed after strain hardening) for a balance of strength and formability.<\/p>\n<h3>What is the melting point of 4147 aluminum?<\/h3>\n<p>4147 has a narrow melting range of approximately 577\u2013582\u00b0C, which is near the aluminum-silicon eutectic temperature. This narrow range is what makes it an excellent brazing filler \u2014 it melts and flows quickly without excessive heat exposure to the core alloy.<\/p>\n<h3>Can 4147 be used to weld 5xxx series alloys?<\/h3>\n<p>It is not recommended. Welding 5xxx (magnesium-bearing) alloys with 4147 filler can produce brittle Mg\u2082Si precipitates at the weld interface. For 5xxx series base metals, 5356 or 5183 filler wire is typically preferred.<\/p>\n<h3>What standards apply to 4147 aluminum?<\/h3>\n<p>Common standards include ASTM B209 (sheet and plate), ISO 6361 (wrought aluminum sheet\/strip\/plate), EN 573-3 (chemical composition), and AWS A5.10\/A5.10M (welding consumables, related designation ER4047).<\/p>\n<h2>Domande frequenti generali sugli ordini<\/h2>\n<h3>What is the typical lead time for custom 4147 orders?<\/h3>\n<p>For non-stock sizes or custom specifications, typical lead time is 10\u201360 days depending on alloy, dimensions, processing requirements, and order complexity. In-stock standard specifications can ship faster \u2014 contact our team for a specific quote.<\/p>\n<h3>Qual \u00e8 la quantit\u00e0 minima d'ordine (MOQ)?<\/h3>\n<p>Linsy supports low-MOQ custom production for non-stock 4147 items. MOQ varies by form, 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 size and processing requirements.<\/p>\n<h3>In quali regioni effettuate le spedizioni?<\/h3>\n<p>Linsy effettua spedizioni in tutto il mondo, con una rete di distribuzione consolidata in Europa, Sudafrica, Brasile, Singapore, Turchia, Giappone, Corea del Sud e Asia meridionale.<\/p>","protected":false},"excerpt":{"rendered":"<p>4147 aluminum alloy (AlSi12 \/ EN AW-4147) is a high-silicon, non-heat-treatable 4000 series aluminum alloy engineered primarily as a brazing filler metal and cladding material. With 11\u201313% silicon content, it offers a narrow melting range, excellent fluidity, and reliable joint formation for vacuum brazing and furnace brazing applications. Linsy supplies 4147 aluminum wire, filler rod, sheet, and coil in tempers O, H14, and H24, with custom sizes and MTC reports available.<\/p>\n<p>\n<strong>Moduli disponibili:<\/strong> wire \/ filler rod \/ sheet \/ coil<br \/>\n<strong>Temperamenti comuni:<\/strong> O \/ H14 \/ H24<br \/>\n<strong>Supporto per l'elaborazione:<\/strong> CNC machining \/ laser cutting \/ surface finishing<br \/>\n<strong>Documenti di qualit\u00e0:<\/strong> Rapporto MTC allegato a ogni ordine, test SGS su richiesta<\/p>","protected":false},"featured_media":9724,"template":"","meta":{"_seopress_titles_title":"4147 Aluminum Alloy (AlSi12) \u2014 Brazing Filler Wire & Sheet Supplier | Linsy Aluminum","_seopress_titles_desc":"Source 4147 aluminum alloy (AlSi12 \/ EN AW-4147) as brazing filler wire, sheet, and coil. High-silicon filler for vacuum brazing heat exchangers. ISO 9001 certified. MTC with every order. 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