{"id":8806,"date":"2025-06-15T02:00:20","date_gmt":"2025-06-15T02:00:20","guid":{"rendered":"https:\/\/premiumalu.com\/7055-aluminum-the-ultimate-guide-for-engineers\/"},"modified":"2026-07-27T12:39:26","modified_gmt":"2026-07-27T12:39:26","slug":"7055-hlinik-pruvodce-pro-inzenyry","status":"publish","type":"post","link":"https:\/\/premiumalu.com\/cs\/7055-aluminum-the-ultimate-guide-for-engineers\/","title":{"rendered":"7055 Slitina hlin\u00edku: Vlastnosti, tepeln\u00e9 zpracov\u00e1n\u00ed a pou\u017eit\u00ed v letectv\u00ed"},"content":{"rendered":"

\u00davod<\/h2>\n

7055 je nejsiln\u011bj\u0161\u00ed z b\u011b\u017en\u00fdch hlin\u00edkov\u00fdch slitin, vyvinut\u00e1 spole\u010dnost\u00ed Alcoa v roce 1991 pro horn\u00ed potahy k\u0159\u00eddel letadel. Obsah zinku, ho\u0159\u010d\u00edku a m\u011bdi je vy\u0161\u0161\u00ed ne\u017e Hlin\u00edk 7075<\/a>. Skute\u010dn\u00fdm rozhodnut\u00edm je, zda pot\u0159ebujete jej\u00ed \u0161pi\u010dkovou pevnost natolik, abyste p\u0159ijali omezenou odolnost proti korozi a konstrukci, kter\u00e1 nen\u00ed sva\u0159ovan\u00e1 pro prim\u00e1rn\u00ed nosn\u00e9 cesty.<\/p>\n

Co je slitina hlin\u00edku 7055?<\/h2>\n

7055 je slitina \u0159ady 7xxx se zinkem, ho\u0159\u010d\u00edkem a vy\u0161\u0161\u00edm obsahem m\u011bdi ne\u017e 7075. Zirkonium zjem\u0148uje strukturu zrna. Typick\u00e9 slo\u017een\u00ed: Zn 7,6\u20138,4 %, Mg 1,8\u20132,3 %, Cu 2,0\u20132,6 %, Zr 0,08\u20130,15 %, zbytek hlin\u00edk. Hustota je p\u0159ibli\u017en\u011b 2,82 g\/cm\u00b3 \u2013 m\u00edrn\u011b vy\u0161\u0161\u00ed ne\u017e u jin\u00fdch jakost\u00ed \u0159ady 7xxx kv\u016fli obsahu m\u011bdi a zinku.<\/p>\n

Typick\u00e9 vlastnosti dle tepeln\u00e9ho zpracov\u00e1n\u00ed<\/h2>\n
\n\n\n\n\n\n\n\n
Temperament<\/th>\nMez pevnosti v tahu (MPa)<\/th>\nMez kluzu (MPa)<\/th>\nProdlou\u017een\u00ed (%)<\/th>\nPozn\u00e1mka<\/th>\n<\/tr>\n<\/thead>\n
T7751<\/td>\n~600<\/td>\n~560<\/td>\n~8<\/td>\nMaxim\u00e1ln\u00ed pevnost (p\u0159est\u00e1rnuto pro kontrolu SCC)<\/td>\n<\/tr>\n
T7451<\/td>\n~590<\/td>\n~540<\/td>\n~9<\/td>\nLep\u0161\u00ed odolnost proti korozi, m\u00edrn\u011b ni\u017e\u0161\u00ed pevnost<\/td>\n<\/tr>\n
T7651<\/td>\n~580<\/td>\n~530<\/td>\n~9<\/td>\nRovnov\u00e1ha mezi pevnost\u00ed a koroz\u00ed<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Uveden\u00e9 hodnoty jsou reprezentativn\u00ed typick\u00e9 hodnoty; b\u011b\u017en\u00e9 specifikace uv\u00e1d\u011bj\u00ed minim\u00e1ln\u00ed mez pevnosti v tahu p\u0159ibli\u017en\u011b 593 MPa pro T7751. Ov\u011b\u0159te proti certifik\u00e1tu z v\u00e1lcovny.<\/p>\n

7055 vs 7075 vs 6061<\/h2>\n
\n\n\n\n\n\n\n\n
Slitina<\/th>\nMez kluzu (MPa)<\/th>\nMez pevnosti v tahu (MPa)<\/th>\nSva\u0159itelnost<\/th>\nKoroze<\/th>\nNejvhodn\u011bj\u0161\u00ed pou\u017eit\u00ed<\/th>\n<\/tr>\n<\/thead>\n
6061-T6<\/a><\/td>\n~276<\/td>\n~310<\/td>\nVynikaj\u00edc\u00ed<\/td>\nDobr\u00fd<\/td>\nObecn\u00e9 konstrukce, sva\u0159ovan\u00e9 v\u00fdrobky<\/td>\n<\/tr>\n
7075-T6<\/a><\/td>\n~503<\/td>\n~572<\/td>\n\u0160patn\u00fd<\/td>\nOmezen\u00e9<\/td>\nLetectv\u00ed, vysok\u00e1 pevnost<\/td>\n<\/tr>\n
7055-T7751<\/td>\n~560<\/td>\n~600<\/td>\n\u0160patn\u00fd<\/td>\nOmezen\u00e9<\/td>\nNejsiln\u011bj\u0161\u00ed leteck\u00e1 konstrukce<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Aplikace<\/h2>\n
    \n
  • Horn\u00ed potahy k\u0159\u00eddel letadel a konstrukce trupu<\/li>\n
  • Vysoce nam\u00e1han\u00e9 konzoly a mont\u00e1\u017en\u00ed prvky u komer\u010dn\u00edch letoun\u016f (pou\u017eit\u00ed u letadel t\u0159\u00eddy 777 a 787)<\/li>\n
  • Siln\u00e9 plechy a kovan\u00e9 konstruk\u010dn\u00ed sou\u010d\u00e1sti, kde dominuje pom\u011br pevnosti k hmotnosti<\/li>\n<\/ul>\n

    Sva\u0159ov\u00e1n\u00ed, obr\u00e1b\u011bn\u00ed a omezen\u00ed koroze<\/h2>\n

    7055 se nesva\u0159uje pro prim\u00e1rn\u00ed nosn\u00e9 cesty: tepeln\u011b ovlivn\u011bn\u00e1 z\u00f3na ztr\u00e1c\u00ed pevnost a slitina nese riziko korozn\u00edho prask\u00e1n\u00ed pod nap\u011bt\u00edm (SCC). Obr\u00e1b\u011bn\u00ed je dobr\u00e9, ale vytv\u00e1\u0159\u00ed lepiv\u00e9 t\u0159\u00edsky, proto pou\u017e\u00edvejte ostr\u00e9 n\u00e1stroje a spolehliv\u00e9 chladic\u00ed m\u00e9dium. Odolnost proti korozi je omezen\u00e1 \u2013 hol\u00e1 7055 nen\u00ed vhodn\u00e1 pro mo\u0159sk\u00e9 prost\u0159ed\u00ed nebo prost\u0159ed\u00ed s chloridy. Leteck\u00e9 pou\u017eit\u00ed se spol\u00e9h\u00e1 na pl\u00e1tov\u00e1n\u00ed, p\u0159est\u00e1rnut\u00ed T77, ochrann\u00e9 n\u00e1t\u011bry a konstrukci ze siln\u00fdch plech\u016f pro \u0159\u00edzen\u00ed SCC.<\/p>\n

    Krit\u00e9ria pou\u017eit\u00ed \/ nepou\u017eit\u00ed<\/h2>\n

    Pou\u017eijte tento rychl\u00fd p\u0159ehled pro rozhodnut\u00ed, zda 7055 vyhovuje va\u0161\u00ed sou\u010d\u00e1sti.<\/p>\n

    Pou\u017eijte \u2013 7055 pou\u017eijte, kdy\u017e:<\/strong><\/p>\n

      \n
    • Je po\u017eadov\u00e1na mez kluzu nad p\u0159ibli\u017en\u011b 550 MPa u obr\u00e1b\u011bn\u00e9 nebo lepen\u00e9 leteck\u00e9 konstrukce \u2013 7055-T7751 je standardn\u00ed jakost se \u0161pi\u010dkovou pevnost\u00ed.<\/li>\n
    • \u00daspora hmotnosti p\u0159eva\u017euje nad omezen\u00edmi koroze a sva\u0159ov\u00e1n\u00ed \u2013 konstrukce vyu\u017e\u00edv\u00e1 pl\u00e1tov\u00e1n\u00ed a n\u00e1t\u011bry pro \u0159\u00edzen\u00ed vliv\u016f prost\u0159ed\u00ed.<\/li>\n
    • Sou\u010d\u00e1st\u00ed je siln\u00fd plech nebo v\u00fdkovek spojen\u00fd spojovac\u00edmi prvky nebo lepidlem, nikoli sva\u0159ov\u00e1n\u00edm.<\/li>\n<\/ul>\n

      Nepou\u017e\u00edvejte \u2013 7055 nepou\u017e\u00edvejte, kdy\u017e:<\/strong><\/p>\n

        \n
      • Sva\u0159ov\u00e1n\u00ed je prim\u00e1rn\u00ed zp\u016fsob spojov\u00e1n\u00ed \u2013 ztr\u00e1ta pevnosti a riziko SCC ji \u010din\u00ed nevhodnou pro sva\u0159ovan\u00e9 konstrukce.<\/li>\n
      • P\u0159edpokl\u00e1d\u00e1 se hol\u00e9 vystaven\u00ed mo\u0159sk\u00e9mu, slan\u00e9mu nebo chloridov\u00e9mu prost\u0159ed\u00ed \u2013 zvolte 5083 nebo \u0159\u00e1dn\u011b chr\u00e1n\u011bnou jakost \u0159ady 6000.<\/li>\n
      • St\u0159edn\u00ed pevnost s snadnou v\u00fdrobou je dostate\u010dn\u00e1 \u2013 6061 nebo 7005 jsou levn\u011bj\u0161\u00ed a snadn\u011bji zpracovateln\u00e9.<\/li>\n<\/ul>\n

        Z\u00e1v\u011br<\/h2>\n

        7055 je hlin\u00edkov\u00e1 jakost se \u0161pi\u010dkovou pevnost\u00ed, ale jej\u00ed omezen\u00e1 odolnost proti korozi, riziko SCC a pravidlo z\u00e1kazu sva\u0159ov\u00e1n\u00ed pro prim\u00e1rn\u00ed konstrukce znamenaj\u00ed, \u017ee prost\u0159ed\u00ed a zp\u016fsob spojov\u00e1n\u00ed mus\u00ed b\u00fdt navr\u017eeny kolem n\u00ed \u2013 a z\u00e1soby z v\u00e1lcoven nestandardn\u00edch tepeln\u00fdch zpracov\u00e1n\u00ed jsou omezen\u00e9. Spole\u010dnost Linsy Aluminum skladuje plechy, ty\u010de a extrudovan\u00e9 profily z 7055 a dod\u00e1v\u00e1 vlastn\u00ed rozm\u011bry p\u0159i n\u00edzk\u00e9m minim\u00e1ln\u00edm mno\u017estv\u00ed objedn\u00e1vky, s \u00faplnou dokumentac\u00ed MTC a vlastn\u00edm zpracov\u00e1n\u00edm a povrchovou \u00fapravou. Pokud se va\u0161e sou\u010d\u00e1st nach\u00e1z\u00ed mezi pevnost\u00ed a sva\u0159itelnost\u00ed na k\u0159ivce \u0159ady 7xxx, za\u0161lete v\u00fdkres pro posouzen\u00ed vhodnosti jakosti a tepeln\u00e9ho zpracov\u00e1n\u00ed.<\/p>\n

        \u010casto kladen\u00e9 ot\u00e1zky<\/h2>\n

        Je 7055 pevn\u011bj\u0161\u00ed ne\u017e 7075?<\/h3>\n

        Ano. 7055-T7751 dosahuje meze kluzu p\u0159ibli\u017en\u011b 560 MPa a meze pevnosti v tahu 600 MPa, co\u017e je zhruba o 10\u201315 % v\u00edce ne\u017e 7075-T6, proto nahradila 7075 v horn\u00edch potaz\u00edch k\u0159\u00eddel u nov\u011bj\u0161\u00edch letoun\u016f.<\/p>\n

        Lze 7055 sva\u0159ovat?<\/h3>\n

        Ne pro prim\u00e1rn\u00ed nosn\u00e9 cesty. Tepeln\u011b ovlivn\u011bn\u00e1 z\u00f3na svaru ztr\u00e1c\u00ed pevnost a slitina nese riziko SCC, proto jsou konstrukce z 7055 spojov\u00e1ny spojovac\u00edmi prvky nebo lepidlem, nikoli sva\u0159ov\u00e1n\u00edm.<\/p>\n

        Kter\u00e9 tepeln\u00e9 zpracov\u00e1n\u00ed je nejlep\u0161\u00ed pro letectv\u00ed?<\/h3>\n

        T7751 poskytuje maxim\u00e1ln\u00ed pevnost pro potahy k\u0159\u00eddel; T7451 ob\u011btuje \u010d\u00e1st pevnosti pro lep\u0161\u00ed odolnost proti korozi, pokud sou\u010d\u00e1st pracuje v n\u00e1ro\u010dn\u011bj\u0161\u00edm prost\u0159ed\u00ed.<\/p>\n

        Jak dob\u0159e odol\u00e1v\u00e1 7055 korozi?<\/h3>\n

        Omezen\u00ed jsou re\u00e1ln\u00e1. Hol\u00e1 7055 nen\u00ed vhodn\u00e1 pro mo\u0159sk\u00e9 prost\u0159ed\u00ed nebo prost\u0159ed\u00ed s chloridy; leteck\u00e9 pou\u017eit\u00ed z\u00e1vis\u00ed na pl\u00e1tov\u00e1n\u00ed, p\u0159est\u00e1rnut\u00ed T77 a ochrann\u00fdch n\u00e1t\u011brech pro kontrolu korozn\u00edho prask\u00e1n\u00ed pod nap\u011bt\u00edm.<\/p>\n

        Jak\u00e9 dokumenty jsou dod\u00e1v\u00e1ny s objedn\u00e1vkou?<\/h3>\n

        Spole\u010dnost Linsy vyd\u00e1v\u00e1 MTC pro ka\u017edou objedn\u00e1vku. Protokoly o zkou\u0161k\u00e1ch SGS chemick\u00e9, mechanick\u00e9, ultrazvukov\u00e9 a RoHS+REACH jsou k dispozici na vy\u017e\u00e1d\u00e1n\u00ed za p\u0159\u00edplatek.<\/p>","protected":false},"excerpt":{"rendered":"

        Introduction 7055 is the strongest of the common aluminum alloys, developed by Alcoa in 1991 for aircraft upper wing skins. It pushes zinc, magnesium, and copper higher than 7075 aluminum. The real decision is whether you need its peak strength enough to accept limited corrosion resistance and a structure that is not welded for primary […]<\/p>\n","protected":false},"author":1,"featured_media":8841,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"7055 Aluminum Alloy: Strength, Tempers and Aerospace Applications","_seopress_titles_desc":"Explore 7055 aluminum alloy - the highest-strength common grade (Zn-Mg-Cu). Typical properties, T7751\/T7451\/T7651 tempers, aerospace wing-skin use, and corrosion limits to plan around.","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"","_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":"","_seopress_redirections_param":"","_seopress_redirections_type":0,"_seopress_analysis_target_kw":"","footnotes":""},"categories":[179],"tags":[],"class_list":["post-8806","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-7000-series-aluminum"],"_links":{"self":[{"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/posts\/8806","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/comments?post=8806"}],"version-history":[{"count":1,"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/posts\/8806\/revisions"}],"predecessor-version":[{"id":10171,"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/posts\/8806\/revisions\/10171"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/media\/8841"}],"wp:attachment":[{"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/media?parent=8806"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/categories?post=8806"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/tags?post=8806"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}