{"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":"7021-aluminiumlegering","status":"publish","type":"product","link":"https:\/\/premiumalu.com\/nl\/product\/7021-aluminiumlegering\/","title":{"rendered":"7021 aluminiumlegering"},"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

Plaat \/ Plaatmateriaal<\/h3>\n

Beschikbare condities:<\/strong> T6, T651<\/p>\n\n\n\n
Temper<\/th>\nDikte (mm)<\/th>\nBreedte (mm)<\/th>\nLengte (mm)<\/th>\n<\/tr>\n
T6, T651<\/td>\n0.5 \u2013 150<\/td>\n500 \u2013 2600<\/td>\n500 \u2013 16000 (op maat gezaagd)<\/td>\n<\/tr>\n<\/table>\n

Buis<\/h3>\n

Beschikbare condities:<\/strong> T6, T651<\/p>\n\n\n\n
Temper<\/th>\nBuitendiameter (mm)<\/th>\nWand (mm)<\/th>\nLengte (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

Staaf \/ Ronde staaf<\/h3>\n

Beschikbare condities:<\/strong> T6, T651<\/p>\n\n\n\n
Temper<\/th>\nDiameter (mm)<\/th>\nLengte (mm)<\/th>\n<\/tr>\n
T6, T651<\/td>\n3 \u2013 300<\/td>\n500 \u2013 12000<\/td>\n<\/tr>\n<\/table>\n

Draad<\/h3>\n

Beschikbare condities:<\/strong> T6, T651<\/p>\n\n\n\n
Diameter (mm)<\/th>\nSpoelgewicht<\/th>\nVerdraagzaamheid<\/th>\n<\/tr>\n
0.8 \u2013 30<\/td>\nMin. 50 kg<\/td>\n\u00b1 0,02 mm<\/td>\n<\/tr>\n<\/table>\n

Specificaties en gelijkwaardige benamingen<\/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

Chemische samenstelling<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Element<\/th>\nPercentage (%)<\/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 max<\/td>\n<\/tr>\n
Zr<\/td>\n0,10 max<\/td>\n<\/tr>\n
Overige (per stuk)<\/td>\n0.05<\/td>\n<\/tr>\n
Overige (totaal)<\/td>\n0.15<\/td>\n<\/tr>\n
Al<\/td>\nSaldo<\/td>\n<\/tr>\n<\/table>\n

Mechanische eigenschappen per hardingsgraad<\/h2>\n\n\n\n\n
Temper<\/th>\nTreksterkte (MPa)<\/th>\nOpbrengststerkte (MPa)<\/th>\nRek (%)<\/th>\nAfschuifsterkte (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

Gids voor het kiezen van de juiste temperatuur<\/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

    Belangrijkste kenmerken<\/h2>\n

    High strength with weldability<\/h3>\n

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

    Goede taaiheid<\/h3>\n

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

    Reasonable corrosion resistance<\/h3>\n

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

    Warmtebehandelbaar<\/h3>\n

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

    Toepassingen<\/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

      Opmerkingen over bewerking en oppervlakteafwerking<\/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

      Kwaliteitsdocumenten en inspectie<\/h2>\n

      Linsy is een in Shenzhen gevestigde aluminiumleverancier met meer dan 20 jaar ervaring. Ons kwaliteitssysteem is gecertificeerd volgens ISO 9001, ISO 14001 en ISO 45001. Elke bestelling wordt verzonden met een fabriekstestcertificaat (MTC). SGS-testrapporten van derden zijn op verzoek beschikbaar. De typische doorlooptijd voor maatwerk is 10\u201360 dagen, afhankelijk van conditie, maat en hoeveelheid.<\/p>\n

      Why Choose Linsy for 7021 Aluminum<\/h2>\n
        \n
      • Fabriek in Shenzhen met 20+ jaar ervaring in het bedienen van kopers in de lucht- en ruimtevaart, automobielindustrie en algemene engineering<\/li>\n
      • Breed vormassortiment: plaat, plaatmateriaal, spoel, buis, staaf, draad, profiel en smeedmateriaal<\/li>\n
      • CNC-bewerking, lasersnijden, TIG\/MIG-lassen en anodiseren \/ polijsten \/ poedercoaten onder \u00e9\u00e9n dak<\/li>\n
      • Fabriekstestcertificaat bij elke bestelling; SGS-rapporten op verzoek<\/li>\n
      • ISO 9001 \/ ISO 14001 \/ ISO 45001 gecertificeerde activiteiten<\/li>\n<\/ul>\n

        Gerelateerde bronnen<\/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

        Elke bestelling wordt verzonden met een MTC, en SGS-testrapporten van derden zijn op verzoek beschikbaar.<\/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

        Veelgestelde vragen over bestellingen in het algemeen<\/h2>\n

        Wat is de gebruikelijke levertijd?<\/h3>\n

        Op maat gemaakte aluminiumbestellingen worden doorgaans verzonden binnen 10\u201360 dagen, afhankelijk van legering, conditie, maat en hoeveelheid. Voorraad of standaardmaten kunnen sneller zijn \u2014 vraag ons team.<\/p>\n

        Kan ik een fabriekstestcertificaat krijgen?<\/h3>\n

        Ja. Elke bestelling bevat een MTC. SGS-testrapporten van derden zijn op verzoek beschikbaar.<\/p>\n

        Bieden jullie bewerking en afwerking?<\/h3>\n

        Ja. Wij bieden CNC-bewerking, lasersnijden, lassen, anodiseren, polijsten en poedercoaten, zodat onderdelen dichter bij de afgewerkte vorm kunnen worden geleverd.<\/p>\n

        Hoe vraag ik een offerte aan?<\/h3>\n

        Stuur uw legering, conditie, afmetingen, hoeveelheid en vereiste norm. Ons team bevestigt beschikbaarheid, doorlooptijd en prijs.<\/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

        \nBeschikbare formulieren:<\/strong> plaat \/ plaatmateriaal, buis, staaf \/ ronde staaf, draad
        \nVeelvoorkomende temperamenten:<\/strong> T6, T651
        \nOndersteuning bij de verwerking:<\/strong> CNC-bewerking, lasersnijden, TIG\/MIG-lassen, anodiseren, polijsten, poedercoaten
        \nKwaliteitsdocumenten:<\/strong> Bij elke bestelling een MTC-rapport<\/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\/nl\/wp-json\/wp\/v2\/product\/8064","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/premiumalu.com\/nl\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/premiumalu.com\/nl\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/premiumalu.com\/nl\/wp-json\/wp\/v2\/media\/8081"}],"wp:attachment":[{"href":"https:\/\/premiumalu.com\/nl\/wp-json\/wp\/v2\/media?parent=8064"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/premiumalu.com\/nl\/wp-json\/wp\/v2\/product_brand?post=8064"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/premiumalu.com\/nl\/wp-json\/wp\/v2\/product_cat?post=8064"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/premiumalu.com\/nl\/wp-json\/wp\/v2\/product_tag?post=8064"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}