{"id":8064,"date":"2025-02-23T15:06:36","date_gmt":"2025-02-23T15:06:36","guid":{"rendered":"https:\/\/premiumalu.com\/?post_type=product&p=8064"},"modified":"2026-07-08T15:01:14","modified_gmt":"2026-07-08T15:01:14","slug":"liga-de-aluminio-7021","status":"publish","type":"product","link":"https:\/\/premiumalu.com\/pt\/produto\/liga-de-aluminio-7021\/","title":{"rendered":"Liga de alum\u00ednio 7021"},"content":{"rendered":"

What Is 7021 Aluminum?<\/h2>\n

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

Available 7021 Aluminum Products<\/h2>\n

Sheet \/ Plate<\/h3>\n

Available tempers:<\/strong> T6, T651<\/p>\n\n\n\n
Temperamento<\/th>\nEspessura (mm)<\/th>\nLargura (mm)<\/th>\nComprimento (mm)<\/th>\n<\/tr>\n
T6, T651<\/td>\n0.5 \u2013 150<\/td>\n500 \u2013 2600<\/td>\n500 \u2013 16000 (cut-to-length)<\/td>\n<\/tr>\n<\/table>\n

Tubo<\/h3>\n

Available tempers:<\/strong> T6, T651<\/p>\n\n\n\n
Temperamento<\/th>\nDi\u00e2metro externo (mm)<\/th>\nParede (mm)<\/th>\nComprimento (mm)<\/th>\n<\/tr>\n
T6, T651<\/td>\n6 \u2013 300<\/td>\n0.5 \u2013 40<\/td>\n500 \u2013 12000<\/td>\n<\/tr>\n<\/table>\n

Bar \/ Rod<\/h3>\n

Available tempers:<\/strong> T6, T651<\/p>\n\n\n\n
Temperamento<\/th>\nDi\u00e2metro (mm)<\/th>\nComprimento (mm)<\/th>\n<\/tr>\n
T6, T651<\/td>\n3 \u2013 300<\/td>\n500 \u2013 12000<\/td>\n<\/tr>\n<\/table>\n

Wire<\/h3>\n

Available tempers:<\/strong> T6, T651<\/p>\n\n\n\n
Di\u00e2metro (mm)<\/th>\nCoil weight<\/th>\nToler\u00e2ncia<\/th>\n<\/tr>\n
0.8 \u2013 30<\/td>\nM\u00ednimo de 50 kg<\/td>\n\u00b1 0,02 mm<\/td>\n<\/tr>\n<\/table>\n

Specifications & Equivalent Designations<\/h2>\n

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

Composi\u00e7\u00e3o qu\u00edmica<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Elemento<\/th>\nPorcentagem (%)<\/th>\n<\/tr>\n
Si<\/td>\n0.40 max<\/td>\n<\/tr>\n
Fe<\/td>\n0.50 max<\/td>\n<\/tr>\n
Cu<\/td>\n1.2 - 2.0<\/td>\n<\/tr>\n
Mn<\/td>\n0.10 \u2013 0.40<\/td>\n<\/tr>\n
Mg<\/td>\n1.2 - 1.8<\/td>\n<\/tr>\n
Cr<\/td>\n0.10 \u2013 0.25<\/td>\n<\/tr>\n
Zn<\/td>\n5.0 - 6.0<\/td>\n<\/tr>\n
Ti<\/td>\n0,10 m\u00e1ximo<\/td>\n<\/tr>\n
Zr<\/td>\n0,10 m\u00e1ximo<\/td>\n<\/tr>\n
Outros (cada)<\/td>\n0.05<\/td>\n<\/tr>\n
Outros (total)<\/td>\n0.15<\/td>\n<\/tr>\n
Al<\/td>\nEquil\u00edbrio<\/td>\n<\/tr>\n<\/table>\n

Propriedades Mec\u00e2nicas por T\u00eampera<\/h2>\n\n\n\n\n
Temperamento<\/th>\nResist\u00eancia \u00e0 tra\u00e7\u00e3o (MPa)<\/th>\nResist\u00eancia ao escoamento (MPa)<\/th>\nAlongamento (%)<\/th>\nResist\u00eancia ao cisalhamento (MPa)<\/th>\n<\/tr>\n
T6<\/td>\n470<\/td>\n420<\/td>\n10<\/td>\n150 \u2013 340<\/td>\n<\/tr>\n
T651<\/td>\n470<\/td>\n420<\/td>\n10<\/td>\n150 \u2013 340<\/td>\n<\/tr>\n<\/table>\n

Values are typical for the indicated condition. An em dash (\u2014) means the value was not available in the source data; confirm with the mill certificate. Asterisked values are estimates pending verification \u2014 see the audit report.<\/p>\n

Temper Selection Guide<\/h2>\n
    \n
  • T6<\/strong> \u2014 Solution heat-treated and artificially aged; primary structural temper.<\/li>\n
  • T651<\/strong> \u2014 Stress-relieved T6 for improved machining stability.<\/li>\n<\/ul>\n

    Principais caracter\u00edsticas<\/h2>\n

    High strength with weldability<\/h3>\n

    Stronger than 7020 while remaining weldable for fabricated structures.<\/p>\n

    Boa resist\u00eancia<\/h3>\n

    Suitable for load-bearing welded assemblies.<\/p>\n

    Reasonable corrosion resistance<\/h3>\n

    Adequate for internal and coated external service.<\/p>\n

    Trat\u00e1vel termicamente<\/h3>\n

    Precipitation hardening delivers the specified strength.<\/p>\n

    Aplicativos<\/h2>\n
      \n
    • Welded transport structures<\/li>\n
    • Automotive structural members<\/li>\n
    • Aerospace welded assemblies<\/li>\n
    • Crane and lifting equipment<\/li>\n
    • General high-strength fabrications<\/li>\n<\/ul>\n

      **Notas sobre Processamento e Acabamento de Superf\u00edcie**<\/h2>\n

      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

      Documentos de Qualidade e Inspe\u00e7\u00e3o<\/h2>\n

      Linsy is a Shenzhen-based aluminum supplier with more than 20 years of experience. Our quality system is certified to ISO 9001, ISO 14001, and ISO 45001. Every order ships with a mill test certificate (MTC). SGS third-party test reports are available on request. Typical custom lead time is 10\u201360 days depending on temper, size, and quantity.<\/p>\n

      Why Choose Linsy for 7021 Aluminum<\/h2>\n
        \n
      • Shenzhen factory with 20+ years serving aerospace, automotive, and general engineering buyers<\/li>\n
      • Wide form range: sheet, plate, coil, tube, bar, wire, profile, and forging stock<\/li>\n
      • CNC machining, laser cutting, TIG\/MIG welding, and anodizing \/ polishing \/ powder coating under one roof<\/li>\n
      • Mill test certificate with every order; SGS reports on request<\/li>\n
      • ISO 9001 \/ ISO 14001 \/ ISO 45001 certified operations<\/li>\n<\/ul>\n

        **Recursos Relacionados**<\/h2>\n

        For deeper reading on 7xxx selection and fabrication, see our guides on aluminum alloy selection and welding 7000-series alloys. (Internal links to be connected to published Linsy blog articles.)<\/p>\n

        7021 Aluminum FAQ<\/h2>\n

        Is 7021 better than 7020 for welding?<\/h3>\n

        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

        What tempers are offered?<\/h3>\n

        T6 and T651 are the standard tempers. T651 reduces residual stress for machining.<\/p>\n

        Does 7021 come with certification?<\/h3>\n

        Every order ships with an MTC, and SGS third-party test reports are available on request.<\/p>\n

        How long is typical lead time?<\/h3>\n

        Custom orders typically ship in 10\u201360 days depending on temper, size, and quantity.<\/p>\n

        FAQ Geral de Pedidos<\/h2>\n

        What is the typical lead time?<\/h3>\n

        Custom aluminum orders typically ship in 10\u201360 days depending on alloy, temper, size, and quantity. Stock or standard sizes may be faster \u2014 ask our team.<\/p>\n

        Can I get a mill test certificate?<\/h3>\n

        Yes. Every order includes an MTC. SGS third-party test reports are available on request.<\/p>\n

        Do you offer machining and finishing?<\/h3>\n

        Yes. We provide CNC machining, laser cutting, welding, anodizing, polishing, and powder coating so parts can be delivered closer to finished form.<\/p>\n

        How do I request a quote?<\/h3>\n

        Send your alloy, temper, dimensions, quantity, and required standard. Our team will confirm availability, lead time, and pricing.<\/p>","protected":false},"excerpt":{"rendered":"

        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

        \nFormul\u00e1rios dispon\u00edveis:<\/strong> sheet \/ plate, tube, bar \/ rod, wire
        \nTemperamentos comuns:<\/strong> T6, T651
        \nSuporte ao processamento:<\/strong> CNC machining, laser cutting, TIG\/MIG welding, anodizing, polishing, powder coating
        \nDocumentos de qualidade:<\/strong> MTC report with every order<\/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\/pt\/wp-json\/wp\/v2\/product\/8064","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/premiumalu.com\/pt\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/premiumalu.com\/pt\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/premiumalu.com\/pt\/wp-json\/wp\/v2\/media\/8081"}],"wp:attachment":[{"href":"https:\/\/premiumalu.com\/pt\/wp-json\/wp\/v2\/media?parent=8064"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/premiumalu.com\/pt\/wp-json\/wp\/v2\/product_brand?post=8064"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/premiumalu.com\/pt\/wp-json\/wp\/v2\/product_cat?post=8064"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/premiumalu.com\/pt\/wp-json\/wp\/v2\/product_tag?post=8064"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}