{"id":8064,"date":"2025-02-23T15:06:36","date_gmt":"2025-02-23T15:06:36","guid":{"rendered":"https:\/\/premiumalu.com\/?post_type=product&#038;p=8064"},"modified":"2026-07-08T15:01:14","modified_gmt":"2026-07-08T15:01:14","slug":"lega-di-alluminio-7021","status":"publish","type":"product","link":"https:\/\/premiumalu.com\/it\/prodotto\/lega-di-alluminio-7021\/","title":{"rendered":"Lega di alluminio 7021"},"content":{"rendered":"<h2>What Is 7021 Aluminum?<\/h2>\n<p>7021 aluminum is a high-strength, weldable 7xxx series alloy primarily alloyed with zinc and magnesium, with a copper addition for strength. It is engineered for structural applications that demand high strength, good weldability, and reasonable corrosion resistance. While not as strong as 7075, 7021 offers a better balance of weldability and strength, making it a preferred choice for welded structures in transport and aerospace. Linsy supplies 7021 as sheet, tube, bar, and wire with mill test certificates on every order.<\/p>\n<h2>Available 7021 Aluminum Products<\/h2>\n<h3>Lastra \/ Piastra<\/h3>\n<p><strong>Tempere disponibili:<\/strong> T6, T651<\/p>\n<table>\n<tr>\n<th>Temperamento<\/th>\n<th>Spessore (mm)<\/th>\n<th>Larghezza (mm)<\/th>\n<th>Lunghezza (mm)<\/th>\n<\/tr>\n<tr>\n<td>T6, T651<\/td>\n<td>0.5 \u2013 150<\/td>\n<td>500 \u2013 2600<\/td>\n<td>500 \u2013 16000 (taglio su misura)<\/td>\n<\/tr>\n<\/table>\n<h3>Tubo<\/h3>\n<p><strong>Tempere disponibili:<\/strong> T6, T651<\/p>\n<table>\n<tr>\n<th>Temperamento<\/th>\n<th>Diametro esterno (mm)<\/th>\n<th>Spessore parete (mm)<\/th>\n<th>Lunghezza (mm)<\/th>\n<\/tr>\n<tr>\n<td>T6, T651<\/td>\n<td>6 \u2013 300<\/td>\n<td>0.5 \u2013 40<\/td>\n<td>500 \u2013 12000<\/td>\n<\/tr>\n<\/table>\n<h3>Barra \/ Tondino<\/h3>\n<p><strong>Tempere disponibili:<\/strong> T6, T651<\/p>\n<table>\n<tr>\n<th>Temperamento<\/th>\n<th>Diametro (mm)<\/th>\n<th>Lunghezza (mm)<\/th>\n<\/tr>\n<tr>\n<td>T6, T651<\/td>\n<td>3 \u2013 300<\/td>\n<td>500 \u2013 12000<\/td>\n<\/tr>\n<\/table>\n<h3>Filo<\/h3>\n<p><strong>Tempere disponibili:<\/strong> T6, T651<\/p>\n<table>\n<tr>\n<th>Diametro (mm)<\/th>\n<th>Peso della bobina<\/th>\n<th>Tolleranza<\/th>\n<\/tr>\n<tr>\n<td>0.8 \u2013 30<\/td>\n<td>Min. 50 kg<\/td>\n<td>\u00b1 0,02 mm<\/td>\n<\/tr>\n<\/table>\n<h2>Specifiche e denominazioni equivalenti<\/h2>\n<p>7021 aluminum (EN AW-7021, AlZn5.5Mg1.5) is supplied to common wrought-alloy specifications. Typical standards by form: ASTM B209 (sheet and plate), ASTM B221 (extruded tube, bar, and profiles), ASTM B211 (bar and rod), and ASTM B313 (welded tube). Forging stock follows ASTM B247. Always confirm the exact specification and temper with our team for your order.<\/p>\n<h2>Composizione chimica<\/h2>\n<table>\n<tr>\n<th>Elemento<\/th>\n<th>Percentuale (%)<\/th>\n<\/tr>\n<tr>\n<td>Si<\/td>\n<td>0.40 max<\/td>\n<\/tr>\n<tr>\n<td>Fe<\/td>\n<td>0,50 max<\/td>\n<\/tr>\n<tr>\n<td>Cu<\/td>\n<td>1.2 - 2.0<\/td>\n<\/tr>\n<tr>\n<td>Mn<\/td>\n<td>0.10 \u2013 0.40<\/td>\n<\/tr>\n<tr>\n<td>Mg<\/td>\n<td>1.2 - 1.8<\/td>\n<\/tr>\n<tr>\n<td>Cr<\/td>\n<td>0.10 \u2013 0.25<\/td>\n<\/tr>\n<tr>\n<td>Zn<\/td>\n<td>5.0 - 6.0<\/td>\n<\/tr>\n<tr>\n<td>Ti<\/td>\n<td>0,10 max<\/td>\n<\/tr>\n<tr>\n<td>Zr<\/td>\n<td>0,10 max<\/td>\n<\/tr>\n<tr>\n<td>Altri (ciascuno)<\/td>\n<td>0.05<\/td>\n<\/tr>\n<tr>\n<td>Altri (totale)<\/td>\n<td>0.15<\/td>\n<\/tr>\n<tr>\n<td>Al<\/td>\n<td>Equilibrio<\/td>\n<\/tr>\n<\/table>\n<h2>Propriet\u00e0 meccaniche in base al trattamento termico<\/h2>\n<table>\n<tr>\n<th>Temperamento<\/th>\n<th>Resistenza alla trazione (MPa)<\/th>\n<th>Resistenza allo snervamento (MPa)<\/th>\n<th>Allungamento (%)<\/th>\n<th>Resistenza al taglio (MPa)<\/th>\n<\/tr>\n<tr>\n<td>T6<\/td>\n<td>470<\/td>\n<td>420<\/td>\n<td>10<\/td>\n<td>150 \u2013 340<\/td>\n<\/tr>\n<tr>\n<td>T651<\/td>\n<td>470<\/td>\n<td>420<\/td>\n<td>10<\/td>\n<td>150 \u2013 340<\/td>\n<\/tr>\n<\/table>\n<p>I valori sono tipici per la condizione indicata. Un trattino lungo (\u2014) significa che il valore non era disponibile nei dati di origine; verificare con il certificato del produttore. I valori contrassegnati da asterisco sono stime in attesa di verifica \u2014 consultare il rapporto di audit.<\/p>\n<h2>Guida alla scelta della tempra<\/h2>\n<ul>\n<li><strong>T6<\/strong> \u2014 Solution heat-treated and artificially aged; primary structural temper.<\/li>\n<li><strong>T651<\/strong> \u2014 Stress-relieved T6 for improved machining stability.<\/li>\n<\/ul>\n<h2>Caratteristiche principali<\/h2>\n<h3>High strength with weldability<\/h3>\n<p>Stronger than 7020 while remaining weldable for fabricated structures.<\/p>\n<h3>Buona resistenza<\/h3>\n<p>Suitable for load-bearing welded assemblies.<\/p>\n<h3>Reasonable corrosion resistance<\/h3>\n<p>Adequate for internal and coated external service.<\/p>\n<h3>Trattabile termicamente<\/h3>\n<p>Precipitation hardening delivers the specified strength.<\/p>\n<h2>Applicazioni<\/h2>\n<ul>\n<li>Welded transport structures<\/li>\n<li>Automotive structural members<\/li>\n<li>Aerospace welded assemblies<\/li>\n<li>Crane and lifting equipment<\/li>\n<li>General high-strength fabrications<\/li>\n<\/ul>\n<h2>Note sulla lavorazione e sulla finitura superficiale<\/h2>\n<p>Linsy laser-cuts and CNC-machines 7021, and welds it with qualified MIG\/TIG procedures. For exterior service, anodizing or painting is recommended. Post-weld heat treatment can be discussed with our engineers to recover strength.<\/p>\n<h2>Documenti di qualit\u00e0 e ispezione<\/h2>\n<p>Linsy \u00e8 un fornitore di alluminio con sede a Shenzhen con oltre 20 anni di esperienza. Il nostro sistema di qualit\u00e0 \u00e8 certificato ISO 9001, ISO 14001 e ISO 45001. Ogni ordine viene spedito con un certificato di prova del produttore (MTC). I rapporti di prova di terze parti SGS sono disponibili su richiesta. Il tempo di consegna tipico per ordini personalizzati \u00e8 di 10\u201360 giorni, a seconda della tempera, delle dimensioni e della quantit\u00e0.<\/p>\n<h2>Why Choose Linsy for 7021 Aluminum<\/h2>\n<ul>\n<li>Fabbrica a Shenzhen con oltre 20 anni di esperienza al servizio di acquirenti nei settori aerospaziale, automobilistico e dell'ingegneria generale<\/li>\n<li>Ampia gamma di forme: lastra, piastra, bobina, tubo, barra, filo, profilato e materiale per fucinatura<\/li>\n<li>Lavorazione CNC, taglio laser, saldatura TIG\/MIG, anodizzazione \/ lucidatura \/ verniciatura a polvere sotto lo stesso tetto<\/li>\n<li>Certificato di prova del produttore con ogni ordine; rapporti SGS su richiesta<\/li>\n<li>Operazioni certificate ISO 9001 \/ ISO 14001 \/ ISO 45001<\/li>\n<\/ul>\n<h2>Risorse correlate<\/h2>\n<p>Per approfondimenti sulla selezione e fabbricazione delle leghe 7xxx, consultare le nostre guide sulla selezione delle leghe di alluminio e sulla saldatura delle leghe della serie 7000. (Collegamenti interni da connettere agli articoli pubblicati sul blog Linsy.)<\/p>\n<h2>7021 Aluminum FAQ<\/h2>\n<h3>Is 7021 better than 7020 for welding?<\/h3>\n<p>7021 is stronger and still weldable, but 7020 generally has the edge in weldability and corrosion. Choose 7021 when you need more strength in a welded build.<\/p>\n<h3>What tempers are offered?<\/h3>\n<p>T6 and T651 are the standard tempers. T651 reduces residual stress for machining.<\/p>\n<h3>Does 7021 come with certification?<\/h3>\n<p>Every order ships with an MTC, and SGS third-party test reports are available on request.<\/p>\n<h3>How long is typical lead time?<\/h3>\n<p>Custom orders typically ship in 10\u201360 days depending on temper, size, and quantity.<\/p>\n<h2>Domande frequenti generali sugli ordini<\/h2>\n<h3>Qual \u00e8 il tempo di consegna standard?<\/h3>\n<p>Gli ordini personalizzati di alluminio vengono generalmente spediti in 10\u201360 giorni, a seconda della lega, della tempera, delle dimensioni e della quantit\u00e0. Articoli in stock o dimensioni standard potrebbero essere pi\u00f9 rapidi \u2014 chiedi al nostro team.<\/p>\n<h3>Posso ottenere un certificato di prova del produttore?<\/h3>\n<p>S\u00ec. Ogni ordine include un MTC. I rapporti di prova di terze parti SGS sono disponibili su richiesta.<\/p>\n<h3>Offrite lavorazione meccanica e finitura?<\/h3>\n<p>S\u00ec. Forniamo lavorazione CNC, taglio laser, saldatura, anodizzazione, lucidatura e verniciatura a polvere, in modo che le parti possano essere consegnate in uno stato pi\u00f9 vicino a quello finito.<\/p>\n<h3>Come posso richiedere un preventivo?<\/h3>\n<p>Invia lega, tempera, dimensioni, quantit\u00e0 e standard richiesto. Il nostro team confermer\u00e0 la disponibilit\u00e0, i tempi di consegna e il prezzo.<\/p>","protected":false},"excerpt":{"rendered":"<p>7021 aluminum is a high-strength, weldable 7xxx series alloy primarily alloyed with zinc and magnesium, with a copper addition for strength. It is engineered for structural applications that demand high strength, good weldability, and reasonable corrosion resistance. While not as strong as 7075, 7021 offers a better balance of weldability and strength, making it a preferred choice for welded structures in transport and aerospace. Linsy supplies 7021 as sheet, tube, bar, and wire with mill test certificates on every order.<\/p>\n<p>\n<strong>Moduli disponibili:<\/strong> lastra \/ piastra, tubo, barra \/ tondino, filo<br \/>\n<strong>Temperamenti comuni:<\/strong> T6, T651<br \/>\n<strong>Supporto per l'elaborazione:<\/strong> Lavorazione CNC, taglio laser, saldatura TIG\/MIG, anodizzazione, lucidatura, verniciatura a polvere<br \/>\n<strong>Documenti di qualit\u00e0:<\/strong> Rapporto MTC allegato a ogni ordine<\/p>","protected":false},"featured_media":8081,"template":"","meta":{"_seopress_titles_title":"7021 Aluminum Alloy \u2014 Sheet, Bar & Wire | Linsy Aluminum","_seopress_titles_desc":"7021 (AlZn5.5Mg1.5) is a high-strength weldable 7xxx alloy from Linsy, balancing strength and weldability for welded structural components.","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"none","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"both","_seopress_redirections_param":"","_seopress_redirections_type":301,"_seopress_analysis_target_kw":""},"product_brand":[],"product_cat":[90,99],"product_tag":[],"class_list":["post-8064","product","type-product","status-publish","has-post-thumbnail","product_cat-7000-series-aluminum-alloys","product_cat-most-popular-aluminum-grade","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/premiumalu.com\/it\/wp-json\/wp\/v2\/product\/8064","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/premiumalu.com\/it\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/premiumalu.com\/it\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/premiumalu.com\/it\/wp-json\/wp\/v2\/media\/8081"}],"wp:attachment":[{"href":"https:\/\/premiumalu.com\/it\/wp-json\/wp\/v2\/media?parent=8064"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/premiumalu.com\/it\/wp-json\/wp\/v2\/product_brand?post=8064"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/premiumalu.com\/it\/wp-json\/wp\/v2\/product_cat?post=8064"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/premiumalu.com\/it\/wp-json\/wp\/v2\/product_tag?post=8064"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}