{"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":"2026-10-08T01:46:42","modified_gmt":"2026-10-08T01:46:42","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":"<p class=\"wp-block-paragraph\">7055 je jednou z nejpevn\u011bj\u0161\u00edch tv\u00e1\u0159en\u00fdch hlin\u00edkov\u00fdch slitin v komer\u010dn\u00ed nab\u00eddce, postaven\u00e1 na vy\u0161\u0161\u00edm obsahu zinku a m\u011bdi ne\u017e okoln\u00ed t\u0159\u00eddy 7xxx. Alcoa ji p\u0159edstavila v roce 1991 \u2014 T7751 pro plechy, T77511 pro v\u00fdlisky \u2014 zam\u011b\u0159enou p\u0159\u00edmo na konstrukce nam\u00e1han\u00e9 tlakem: horn\u00ed potahy k\u0159\u00eddel, horizont\u00e1ln\u00ed stabiliz\u00e1tory a k\u00fdlov\u00e9 nosn\u00edky.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Rozhodnut\u00ed, kter\u00e9 vynucuje, je \u00fazk\u00e9. 7055 kupuje garantovanou pevnost v tlust\u00e9m pr\u016f\u0159ezu, kterou \u017e\u00e1dn\u00fd standardn\u00ed <a href=\"https:\/\/premiumalu.com\/cs\/zvladnuti-hlinikove-slitiny-7075-t651-komplexni-pruvodce\/\">7075<\/a> ani produkt 6061 nedosahuje, a v\u00fdm\u011bnou p\u0159ich\u00e1z\u00ed v kr\u00e1tk\u00e9m seznamu forem a leteck\u00fdch specifikac\u00ed, nen\u00ed slitinou pro tavn\u00e9 sva\u0159ov\u00e1n\u00ed a st\u00e1le vy\u017eaduje navr\u017eenou protikorozn\u00ed ochranu. Pokud je d\u00edl sva\u0159ovan\u00fd nebo cenov\u011b srovn\u00e1van\u00fd s 7075, 7055 nen\u00ed odpov\u011bd\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Co je slitina hlin\u00edku 7055?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">7055 je tepeln\u011b zpracovateln\u00e1 slitina Al-Zn-Mg-Cu, registrovan\u00e1 asociac\u00ed Aluminum Association a uveden\u00e1 v syst\u00e9mu UNS jako A97055. Zinek a ho\u0159\u010d\u00edk tvo\u0159\u00ed zpev\u0148uj\u00edc\u00ed precipit\u00e1t MgZn\u2082; m\u011b\u010f zvy\u0161uje pevnost a lomovou hou\u017eevnatost; zirkon tvo\u0159\u00ed disperzoidy Al\u2083Zr, kter\u00e9 zaji\u0161\u0165uj\u00ed hranice zrn a br\u00e1n\u00ed rekrystalizaci b\u011bhem tv\u00e1\u0159en\u00ed za tepla.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Prvek<\/td><td>Rozsah (% hmotnostn\u00ed)<\/td><td>Role<\/td><\/tr><tr><td>Zinek (Zn)<\/td><td>7.6\u20138.4<\/td><td>Prim\u00e1rn\u00ed zpev\u0148uj\u00edc\u00ed prvek<\/td><\/tr><tr><td>Ho\u0159\u010d\u00edk (Mg)<\/td><td>1.8\u20132.3<\/td><td>Tvo\u0159\u00ed zpev\u0148uj\u00edc\u00ed f\u00e1zi MgZn\u2082 se zinkem<\/td><\/tr><tr><td>M\u011b\u010f (Cu)<\/td><td>2.0\u20132.6<\/td><td>Zvy\u0161uje pevnost a lomovou hou\u017eevnatost; hlavn\u00ed faktor citlivosti na korozi<\/td><\/tr><tr><td>Zirkonium (Zr)<\/td><td>0.08\u20130.25<\/td><td>Zjemn\u011bn\u00ed zrna; zlep\u0161uje prokalitelnost v tlust\u00e9m plechu<\/td><\/tr><tr><td>K\u0159em\u00edk (Si)<\/td><td>\u22640,10<\/td><td>Limit ne\u010distot<\/td><\/tr><tr><td>\u017delezo (Fe)<\/td><td>\u22640,15<\/td><td>Limit ne\u010distot<\/td><\/tr><tr><td>Titan (Ti)<\/td><td>\u22640,06<\/td><td>Zjem\u0148ova\u010d zrna<\/td><\/tr><tr><td>Chrom (Cr)<\/td><td>\u22640,04<\/td><td>\u0158\u00edzen\u00ed struktury zrn<\/td><\/tr><tr><td>Mangan (Mn)<\/td><td>\u22640,05<\/td><td>Limit stopov\u00fdch prvk\u016f<\/td><\/tr><tr><td>Ostatn\u00ed (ka\u017ed\u00fd \/ celkem)<\/td><td>\u22640,05 \/ \u22640,15<\/td><td>Stopov\u00e1 mno\u017estv\u00ed<\/td><\/tr><tr><td>Hlin\u00edk (Al)<\/td><td>Z\u016fstatek (85,9\u201388,5)<\/td><td>Nobelmetal<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Meze se \u0159\u00edd\u00ed registrac\u00ed Aluminum Association. Hustota je 2,86 g\/cm\u00b3 (0,103 lb\/in\u00b3) oproti p\u0159ibli\u017en\u011b 2,81 g\/cm\u00b3 u 7075 \u2014 slitina nese hust\u0161\u00ed n\u00e1lo\u017e zinku a m\u011bdi v\u00fdm\u011bnou za svou pevnost, co\u017e je d\u016fvod, pro\u010d se konstruk\u010dn\u00ed srovn\u00e1n\u00ed prov\u00e1d\u011bj\u00ed na m\u011brnou pevnost, nikoli na absolutn\u00ed MPa.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Dva body t\u00fdkaj\u00edc\u00ed se formy jsou d\u016fle\u017eit\u00e9 p\u0159edev\u0161\u00edm. 7055 nen\u00ed katalogov\u00e1 slitina a jej\u00ed leteck\u00e9 materi\u00e1lov\u00e9 specifikace pokr\u00fdvaj\u00ed pouze dv\u011b rodiny: AMS 4206 pro plechy a AMS 4324, 4336 a 4337 pro lisovan\u00e9 ty\u010de, trubky a profily. Cokoli mimo tyto sekce a rozm\u011bry se vyr\u00e1b\u00ed podle va\u0161eho v\u00fdkresu. Uve\u010fte formu a jej\u00ed \u0159\u00edd\u00edc\u00ed specifikaci v popt\u00e1vce, proto\u017ee p\u0159\u00edpona stavu se m\u011bn\u00ed s formou.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tuhost se slitinou nezlep\u0161uje. Modul pru\u017enosti je 71,7 GPa (10,4 \u00d7 10\u00b3 ksi), v podstat\u011b stejn\u00fd jako u 6061 s 68,9 GPa, tak\u017ee 7055 kupuje pevnost a hmotnost \u2014 nikdy tuhost. D\u00edl, kter\u00fd se v 6061 proh\u00fdb\u00e1 p\u0159\u00edli\u0161, se bude p\u0159\u00edli\u0161 proh\u00fdbat i v 7055.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Stavy a zp\u016fsoby st\u00e1rnut\u00ed<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/02-form-and-temper.webp\" alt=\"02-forma-a-stav-vytvrzeni\" class=\"wp-image-10683\" srcset=\"https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/02-form-and-temper.webp 800w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/02-form-and-temper-300x225.webp 300w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/02-form-and-temper-768x576.webp 768w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/02-form-and-temper-16x12.webp 16w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/02-form-and-temper-600x450.webp 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">7055 se v leteck\u00fdch specifikac\u00edch nikdy nedod\u00e1v\u00e1 ve \u0161pi\u010dkov\u011b vytvrzen\u00e9m stavu. Ka\u017ed\u00fd publikovan\u00fd stav je \u00faprava typu T7 a rozd\u00edl mezi nimi spo\u010d\u00edv\u00e1 v tom, jak\u00e9 p\u0159est\u00e1rnut\u00ed slitina dostane v\u00fdm\u011bnou za korozn\u00ed rezervu.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Typ T74<\/strong> \u2014 dvoustup\u0148ov\u00e9 p\u0159est\u00e1rnut\u00ed. Nejvy\u0161\u0161\u00ed odolnost proti korozn\u00edmu prask\u00e1n\u00ed pod nap\u011bt\u00edm, nejni\u017e\u0161\u00ed pevnost ze v\u0161ech t\u0159\u00ed.<\/li>\n\n\n\n<li><strong>Typ T76<\/strong> \u2014 dvoustup\u0148ov\u00e9 p\u0159est\u00e1rnut\u00ed, m\u00e9n\u011b v\u00fdrazn\u00e9. Vy\u0161\u0161\u00ed pevnost ne\u017e T74, s odolnost\u00ed proti slupkovit\u00e9 korozi jako konstruk\u010dn\u00edm c\u00edlem.<\/li>\n\n\n\n<li><strong>Typ T77<\/strong> \u2014 retrogrese a op\u011btovn\u00e9 st\u00e1rnut\u00ed (RRA): slitina se \u0161pi\u010dkov\u011b vytvrd\u00ed, kr\u00e1tce retrogresuje p\u0159i vysok\u00e9 teplot\u011b a pot\u00e9 znovu st\u00e1rne. T\u00edm se obnov\u00ed t\u00e9m\u011b\u0159 \u0161pi\u010dkov\u00e1 pevnost p\u0159i zachov\u00e1n\u00ed odolnosti proti slupkovit\u00e9 korozi t\u0159\u00eddy T76, a to je \u00faprava, kter\u00e1 u\u010dinila 7055 \u017eivotaschopnou pro potahy k\u0159\u00eddel.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Temperament<\/td><td>Formul\u00e1\u0159<\/td><td>\u0158\u00edd\u00edc\u00ed specifikace<\/td><td>Zp\u016fsob st\u00e1rnut\u00ed<\/td><td>Konstruk\u010dn\u00ed minimum, Rm \/ Rp0,2 (L)<\/td><\/tr><tr><td>T7751<\/td><td>Deska<\/td><td>AMS 4206<\/td><td>RRA<\/td><td>614 \/ 593 MPa (0,5\u20131,5 in)<\/td><\/tr><tr><td>T77511<\/td><td>Vytla\u010dov\u00e1n\u00ed<\/td><td>AMS 4337<\/td><td>RRA<\/td><td>648 \/ 620 MPa (0,5\u20131,5 in)<\/td><\/tr><tr><td>T76511<\/td><td>Vytla\u010dov\u00e1n\u00ed<\/td><td>AMS 4336<\/td><td>Dvoustup\u0148ov\u00e9 p\u0159est\u00e1rnut\u00ed (T76)<\/td><td>614 \/ 586 MPa (\u22640,25 in)<\/td><\/tr><tr><td>T74511<\/td><td>Vytla\u010dov\u00e1n\u00ed<\/td><td>AMS 4324<\/td><td>Dvoustup\u0148ov\u00e9 p\u0159est\u00e1rnut\u00ed (T74)<\/td><td>572 \/ 524 MPa (\u22640,25 in)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Vyb\u00edrejte podle pr\u016f\u0159ezu a prost\u0159ed\u00ed, nikoli podle sloupce pevnosti: stavy RRA, T7751 a T77511, jsou volbou pevnosti a T74511 je to, co specifikovat tam, kde je \u0159\u00edd\u00edc\u00edm rizikem trval\u00e9 tahov\u00e9 nap\u011bt\u00ed ve vlhk\u00e9m prost\u0159ed\u00ed nebo prost\u0159ed\u00ed s obsahem chlorid\u016f. \u010ct\u011bte ka\u017ed\u00e9 minimum proti sloupci tlou\u0161\u0165ky vyti\u0161t\u011bn\u00e9mu vedle n\u011bj \u2014 \u00fadaje pro tenk\u00e9 v\u00fdlisky a tlust\u00e9 plechy jsou r\u016fzn\u00e1 m\u011b\u0159en\u00ed, nikoli \u017eeb\u0159\u00ed\u010dek stav\u016f.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Jednoduch\u00e1 a dvojit\u00e1 p\u0159\u00edpona je forma. Podle ANSI H35.1 se \u00faprava T_51 vztahuje na v\u00e1lcovan\u00e9 plechy a \u00faprava T_511 na lisovan\u00e9 ty\u010de, pruty, trubky a profily, co\u017e je d\u016fvod, pro\u010d plech je T7751 a v\u00fdlisek je T77511. V\u00fdkres, kter\u00fd po\u017eaduje \u201c7055-T7451\u201d bez druh\u00e9 1, obvykle popisuje v\u00fdlisek; p\u0159ed nab\u00eddkou potvr\u010fte, kter\u00e1 forma je m\u00edn\u011bna.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">7055-T7751: Konstruk\u010dn\u00ed minimum versus typick\u00e9 hodnoty<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Minima \u0159\u00edd\u00ed konstrukci; typick\u00e9 hodnoty \u0159\u00edkaj\u00ed, co skute\u010dn\u011b doraz\u00ed. Oba sloupce n\u00ed\u017ee jsou pro sm\u011br L v plechu 7055-T7751.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Majetek<\/td><td>Konstruk\u010dn\u00ed minimum, AMS 4206 (0,5\u20131,5 in)<\/td><td>Typick\u00e9, Alcoa (25,4 mm)<\/td><\/tr><tr><td>Tah, Rm<\/td><td>614 MPa (L a LT)<\/td><td>669 MPa (L) \/ 627 MPa (LT)<\/td><\/tr><tr><td>Mez kluzu, Rp0,2<\/td><td>593 MPa (L) \/ 586 MPa (LT)<\/td><td>655 MPa (L) \/ 614 MPa (LT)<\/td><\/tr><tr><td>Mez kluzu v tlaku, Fcy<\/td><td>593 MPa (L) \/ 614 MPa (LT)<\/td><td>669 MPa (L)<\/td><\/tr><tr><td>Prodlou\u017een\u00ed<\/td><td>7% (L) \/ 8% (LT)<\/td><td>11% (L) \/ 10% (LT)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Navrhujte podle minim\u00e1ln\u00edch hodnot sloupc\u016f a typick\u00e9 hodnoty pova\u017eujte za pl\u00e1novac\u00ed vod\u00edtko: z\u00e1rukou, kter\u00e1 je z\u00e1vazn\u00e1 pro va\u0161i \u0161ar\u017ei, je \u00fadaj uveden\u00fd na atestu z v\u00fdroby, nikoli \u010d\u00edslo na datov\u00e9m listu v\u00fdrobce. V\u0161imn\u011bte si, kde se nach\u00e1z\u00ed hodnota v tlaku \u2014 ve sm\u011bru LT je minim\u00e1ln\u00ed mez kluzu v tlaku o 28 MPa vy\u0161\u0161\u00ed ne\u017e minim\u00e1ln\u00ed mez kluzu v tahu, co\u017e je vlastnost, na n\u00ed\u017e je zalo\u017eeno dimenzov\u00e1n\u00ed tlakov\u011b kritick\u00fdch k\u0159\u00eddel a nosn\u00edk\u016f.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">7055 vs 7075 vs 6061<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/05-alloy-selection.webp\" alt=\"05-volba-slitiny\" class=\"wp-image-10686\" srcset=\"https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/05-alloy-selection.webp 800w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/05-alloy-selection-300x225.webp 300w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/05-alloy-selection-768x576.webp 768w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/05-alloy-selection-16x12.webp 16w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/05-alloy-selection-600x450.webp 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Slitina \/ stav<\/td><td>Typick\u00e1 mez kluzu Rp0,2 (MPa)<\/td><td>Typick\u00e1 pevnost v tahu Rm (MPa)<\/td><td>Sva\u0159itelnost<\/td><td>Korozn\u00ed odolnost bez povrchov\u00e9 \u00fapravy<\/td><td>Kde se hod\u00ed<\/td><\/tr><tr><td><a href=\"https:\/\/premiumalu.com\/cs\/kompletni-pruvodce-hlinikem-6061\/\">6061-T6<\/a><\/td><td>~276<\/td><td>~310<\/td><td>Vynikaj\u00edc\u00ed<\/td><td>Dobr\u00fd<\/td><td>V\u0161eobecn\u00e9 konstruk\u010dn\u00ed a sva\u0159ovan\u00e9 pr\u00e1ce, \u0161iroce skladem<\/td><\/tr><tr><td><a href=\"https:\/\/premiumalu.com\/cs\/zvladnuti-hlinikove-slitiny-7075-t651-komplexni-pruvodce\/\">7075-T6<\/a><\/td><td>~503<\/td><td>~572<\/td><td>\u0160patn\u00fd<\/td><td>Omezen\u00e9<\/td><td>D\u00edly drak\u016f letadel se slo\u017eitou geometri\u00ed; nej\u0161ir\u0161\u00ed v\u00fdb\u011br dodavatel\u016f \u0159ady 7xxx<\/td><\/tr><tr><td>7055-T7751<\/td><td>~655<\/td><td>~669<\/td><td>\u0160patn\u00fd<\/td><td>Omezen\u00e9, ale lep\u0161\u00ed ne\u017e typ T6<\/td><td>Tlakov\u011b kritick\u00e9 siln\u00e9 plechy a v\u00fdlisky<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Typick\u00e9 hodnoty jsou p\u0159i tlou\u0161\u0165ce p\u0159ibli\u017en\u011b 25 mm ve sm\u011bru L. Oproti tomuto z\u00e1kladu je konstruk\u010dn\u00ed minimum 7055-T7751 ve v\u00fd\u0161i 593 MPa ji\u017e nad typickou mez\u00ed kluzu 7075-T6 p\u0159ibli\u017en\u011b 503 MPa p\u0159i podobn\u00e9 tlou\u0161\u0165ce, tak\u017ee ot\u00e1zka pevnosti je vy\u0159e\u0161ena, nikoli t\u011bsn\u00e1. Volba se p\u0159esouv\u00e1 ke v\u0161emu ostatn\u00edmu: 7055 se dod\u00e1v\u00e1 v mnohem m\u00e9n\u011b form\u00e1ch a stavech, je dra\u017e\u0161\u00ed a nakupuje se podle leteck\u00e9 specifikace, nikoli ze skladu. Publikovan\u00e9 p\u0159ehledy v\u00fdvoje leteck\u00fdch slitin uv\u00e1d\u011bj\u00ed p\u0159\u00ednos 7055-T77 p\u0159ibli\u017en\u011b 8\u201312% oproti 7150-T77, jakosti, pro jej\u00ed\u017e zlep\u0161en\u00ed byl vyvinut.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pokud je pr\u016f\u0159ez tenk\u00fd, tvar slo\u017eit\u00fd nebo term\u00edn kr\u00e1tk\u00fd, je 7075-T6 praktickou odpov\u011bd\u00ed. Pokud je rozhoduj\u00edc\u00edm zat\u00ed\u017een\u00edm tlak v siln\u00e9m plechu, je 7055 d\u016fvodem, pro\u010d tato t\u0159\u00edda d\u00edl\u016f existuje.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Kde se 7055 pou\u017e\u00edv\u00e1<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/03-aerospace-applications.webp\" alt=\"03-aplikace-v-letectvi\" class=\"wp-image-10684\" srcset=\"https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/03-aerospace-applications.webp 800w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/03-aerospace-applications-300x225.webp 300w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/03-aerospace-applications-768x576.webp 768w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/03-aerospace-applications-16x12.webp 16w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/03-aerospace-applications-600x450.webp 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">7055 byl vyvinut pro horn\u00ed k\u0159\u00eddlo Boeingu 777, kde se dosud pou\u017e\u00edv\u00e1 jako plech T7751 a v\u00fdlisek T77511. Potahy horn\u00edho k\u0159\u00eddla, horizont\u00e1ln\u00ed stabiliz\u00e1tor a k\u00fdlov\u00e9 nosn\u00edky pat\u0159\u00ed do stejn\u00e9 rodiny d\u00edl\u016f.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pohl\u00e9dn\u011bte za n\u00e1zev letadla a ka\u017ed\u00fd z nich je stejn\u00fdm prvkem \u2014 siln\u00fd, obr\u00e1b\u011bn\u00fd z plechu nebo \u0159ezan\u00fd z t\u011b\u017ek\u00e9ho v\u00fdlisku, zat\u00ed\u017een\u00fd p\u0159edev\u0161\u00edm tlakem nebo ohybem a spojovan\u00fd sp\u00ed\u0161e spojovac\u00edmi prvky ne\u017e sva\u0159ov\u00e1n\u00edm.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Toto \u010dten\u00ed podle typu d\u00edlu je to trval\u00e9, proto\u017ee programy rychle zastar\u00e1vaj\u00ed: nov\u011bj\u0161\u00ed k\u0159\u00eddla \u0161irokotrup\u00fdch letadel p\u0159e\u0161la z velk\u00e9 \u010d\u00e1sti na kompozity. Ot\u00e1zka, kterou stoj\u00ed za to si polo\u017eit, je, zda v\u00e1\u0161 d\u00edl je siln\u00fd, tlakem zat\u00ed\u017een\u00fd kovov\u00fd prvek. Pokud ano, 7055 pat\u0159\u00ed do srovn\u00e1n\u00ed; pokud ne, pr\u00e9mie nic nep\u0159in\u00e1\u0161\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pr\u00e1ce s 7055<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Sva\u0159ov\u00e1n\u00ed a spojov\u00e1n\u00ed<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">7055 nen\u00ed slitinou pro tavn\u00e9 sva\u0159ov\u00e1n\u00ed. Obloukov\u00e9 sva\u0159ov\u00e1n\u00ed ni\u010d\u00ed strukturu precipit\u00e1t\u016f ve svaru a v tepeln\u011b ovlivn\u011bn\u00e9 z\u00f3n\u011b a vysok\u00fd obsah m\u011bdi zanech\u00e1v\u00e1 tyto z\u00f3ny jak slab\u00e9, tak n\u00e1chyln\u00e9 k nap\u011b\u0165ov\u00e9 korozn\u00ed prasklin\u011b, tak\u017ee leteck\u00e9 specifikace se vyh\u00fdbaj\u00ed tavn\u00fdm svar\u016fm v kritick\u00fdch komponentech z 7055. Konstrukce se m\u00edsto toho spojuje spojovac\u00edmi prvky nebo lepen\u00edm.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T\u0159en\u00edm m\u00edch\u00e1n\u00edm sva\u0159ov\u00e1n\u00ed vytv\u00e1\u0159\u00ed zdrav\u00e9 spoje 7xxx tam, kde se aplikuje po sva\u0159ov\u00e1n\u00ed st\u00e1rnut\u00ed, a je v\u00fdzkumnou cestou pro integr\u00e1ln\u011b vyztu\u017een\u00e9 panely. Nen\u00ed to proces, kter\u00fd m\u016f\u017ee nab\u00eddnout b\u011b\u017en\u00e1 v\u00fdrobn\u00ed d\u00edlna, tak\u017ee jej berte jako v\u00fdrobn\u00ed rozhodnut\u00ed, nikoli jako z\u00e1lo\u017en\u00ed \u0159e\u0161en\u00ed. Pokud je sva\u0159ov\u00e1n\u00ed prim\u00e1rn\u00ed metodou spojov\u00e1n\u00ed, jakost je nespr\u00e1vn\u00e1: <a href=\"https:\/\/premiumalu.com\/cs\/objevit-7003-hlinik-klicova-fakta-ktera-potrebujete-vedet\/\">7003<\/a> a <a href=\"https:\/\/premiumalu.com\/cs\/zvladnuti-hlinikove-slitiny-7005-komplexni-pruvodce\/\">7005<\/a> sva\u0159ujte s p\u0159\u00eddavn\u00fdm materi\u00e1lem 5xxx a vzdejte se pevnosti, kterou mo\u017en\u00e1 nepot\u0159ebujete.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Obr\u00e1b\u011bn\u00ed a tv\u00e1\u0159en\u00ed<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">7055 se \u010dist\u011b obr\u00e1b\u00ed ve stavech typu T7. Je tvrd\u00fd a produkuje kr\u00e1tk\u00e9, dob\u0159e l\u00e1mav\u00e9 t\u0159\u00edsky nam\u00edsto dlouh\u00fdch vl\u00e1ken, kter\u00e9 vrh\u00e1 m\u011bkk\u00e1 jakost, tak\u017ee povrchov\u00e1 \u00faprava se snadno dodr\u017e\u00ed \u2014 za p\u0159edpokladu, \u017ee upnut\u00ed je tuh\u00e9, n\u00e1stroj je ostr\u00fd karbidov\u00fd a chladic\u00ed kapalina dos\u00e1hne na \u0159ez pod tlakem.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Deformace je skute\u010dn\u00fdm rizikem. Siln\u00e9 plechy a t\u011b\u017ek\u00e9 v\u00fdlisky nesou zbytkov\u00e9 nap\u011bt\u00ed z kalen\u00ed a rovn\u00e1n\u00ed a nerovnom\u011brn\u011b odebran\u00fd materi\u00e1l se bude pohybovat. Udr\u017eujte odb\u011br materi\u00e1lu vyv\u00e1\u017een\u00fd nap\u0159\u00ed\u010d pr\u016f\u0159ezem, dokon\u010dovac\u00ed pr\u016fchody prov\u00e1d\u011bjte lehce a o\u010dek\u00e1vejte obr\u00e1b\u011bn\u00ed d\u00edlu, kter\u00fd mus\u00ed z\u016fstat ploch\u00fd p\u0159i dvou upnut\u00edch nam\u00edsto jednoho.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tv\u00e1\u0159en\u00ed je omezen\u00e9. Stavy typu T7 nemaj\u00ed dostate\u010dnou ta\u017enost pro t\u011bsn\u00e9 ohyby, tak\u017ee d\u00edl s tvarovan\u00fdmi detaily se obvykle obr\u00e1b\u00ed z plechu. Navrhn\u011bte geometrii pro obr\u00e1b\u011bc\u00ed cestu od za\u010d\u00e1tku.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Meze korozn\u00ed odolnosti a odolnosti proti korozn\u00edmu prask\u00e1n\u00ed za nap\u011bt\u00ed<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Korozn\u00ed odolnost bez povrchov\u00e9 \u00fapravy je omezen\u00e1. S m\u011bd\u00ed p\u0159i 2,0\u20132,6% je 7055 ve stejn\u00e9 rodin\u011b jako 7075 a vy\u017eaduje anodizaci, z\u00e1kladn\u00ed n\u00e1t\u011br a barvu nebo t\u011bsnic\u00ed hmoty v jak\u00e9koli vlhk\u00e9 nebo chloridov\u00e9 slu\u017eb\u011b, plus izolaci v\u0161ude, kde je p\u0159i\u0161roubov\u00e1n k odli\u0161n\u00e9mu kovu.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Co stavy typu T7 p\u0159in\u00e1\u0161ej\u00ed, je v\u0161ak skute\u010dn\u00e9. MIL-HDBK-5 uv\u00e1d\u00ed, \u017ee stav typu T77 m\u00e1 odolnost proti exfoliaci srovnatelnou se stavy typu T76 jin\u00fdch jakost\u00ed 7xxx, tak\u017ee 7055-T7751 si v tomto ohledu vede l\u00e9pe ne\u017e 7075-T6 \u2014 srovn\u00e1n\u00ed, kter\u00e9 tabulka pevnosti neukazuje.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nap\u011b\u0165ov\u00e1 korozn\u00ed prasklina z\u016fst\u00e1v\u00e1 konstruk\u010dn\u00edm limitem, nikoli okrajov\u00fdm p\u0159\u00edpadem. Udr\u017eujte trval\u00e9 tahov\u00e9 nap\u011bt\u00ed v r\u00e1mci povolen\u00fdch hodnot pro stav a pr\u016f\u0159ez, kter\u00fd nakupujete, a uve\u010fte provozn\u00ed prost\u0159ed\u00ed v popt\u00e1vce, aby doporu\u010den\u00ed stavu odpov\u00eddalo.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Provozn\u00ed teplota<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Pova\u017eujte 7055 za konstruk\u010dn\u00ed slitinu pro pokojovou teplotu. Jako ka\u017ed\u00e1 jakost vytvrzovan\u00e1 precipitac\u00ed st\u00e1rne a ztr\u00e1c\u00ed pevnost, jak se provozn\u00ed teplota zvy\u0161uje, tak\u017ee okoln\u00ed povolen\u00e9 hodnoty nejsou spr\u00e1vn\u00fdm z\u00e1kladem pro hork\u00fd d\u00edl. Pokud je provozn\u00ed teplota zv\u00fd\u0161en\u00e1, vych\u00e1zejte z dat pro zv\u00fd\u0161en\u00e9 teploty pro stav a tlou\u0161\u0165ku, kter\u00e9 pou\u017e\u00edv\u00e1te.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Krit\u00e9ria pou\u017eit\u00ed \/ nepou\u017eit\u00ed<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/06-selection-limits.webp\" alt=\"06-limity-volby\" class=\"wp-image-10687\" srcset=\"https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/06-selection-limits.webp 800w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/06-selection-limits-300x225.webp 300w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/06-selection-limits-768x576.webp 768w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/06-selection-limits-16x12.webp 16w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/06-selection-limits-600x450.webp 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Jd\u011bte \u2014 specifikujte 7055, kdy\u017e:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Rozhoduj\u00edc\u00ed zat\u00ed\u017een\u00ed je tlak nebo ohyb v siln\u00e9m pr\u016f\u0159ezu a d\u00edl je obr\u00e1b\u011bn z plechu nebo \u0159ez\u00e1n z t\u011b\u017ek\u00e9ho v\u00fdlisku.<\/li>\n\n\n\n<li>V\u00fdpo\u010det pevnosti je omezen tlou\u0161\u0165kou, tak\u017ee vy\u0161\u0161\u00ed mez kluzu v tlaku se prom\u00edt\u00e1 do skute\u010dn\u00e9 \u00faspory hmotnosti konstrukce.<\/li>\n\n\n\n<li>Spojov\u00e1n\u00ed je pomoc\u00ed spojovac\u00edch prvk\u016f nebo lepidla a sestava nikdy nevid\u00ed tavn\u00fd svar.<\/li>\n\n\n\n<li>Korozn\u00ed expozice je navr\u017eena, s povlakem, t\u011bsn\u011bn\u00edm a izolac\u00ed odli\u0161n\u00fdch kov\u016f zabudovan\u00fdmi do v\u00fdkresu.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>No-Go \u2014 hledejte jinde, kdy\u017e:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Sva\u0159ov\u00e1n\u00ed je prim\u00e1rn\u00ed metodou spojov\u00e1n\u00ed. Pou\u017eijte m\u00edsto toho 7003, 7005 nebo jakost \u0159ady 6000.<\/li>\n\n\n\n<li>O\u010dek\u00e1v\u00e1 se hol\u00e1 mo\u0159sk\u00e1 voda, oblast \u0161plouch\u00e1n\u00ed nebo chloridov\u00e1 slu\u017eba bez povlaku. Pou\u017eijte 5083 nebo chr\u00e1n\u011bnou jakost 6xxx.<\/li>\n\n\n\n<li>D\u00edl je tenk\u00fd, geometricky slo\u017eit\u00fd nebo pot\u0159ebn\u00fd na kr\u00e1tkou dobu \u2014 7075-T6 je skladem v mnohem v\u00edce form\u00e1ch, stavech a velikostech.<\/li>\n\n\n\n<li>Standardn\u00ed pevnost se snadnou v\u00fdrobou sta\u010d\u00ed. 6061-T6 stoj\u00ed m\u00e9n\u011b a zpracov\u00e1v\u00e1 se mnohem snadn\u011bji.<\/li>\n\n\n\n<li>V\u00fdkres uv\u00e1d\u00ed stav 7055 mimo rozsah AMS pro plech a v\u00fdlisky. P\u0159ed nab\u00eddkou potvr\u010fte rozhoduj\u00edc\u00ed specifikaci.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Pozn\u00e1mky k z\u00e1sobov\u00e1n\u00ed: Co potvrdit p\u0159ed objedn\u00e1vkou<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">7055 nen\u00ed katalogov\u00fdm materi\u00e1lem jako 7075, tak\u017ee popt\u00e1vka mus\u00ed n\u00e9st v\u00edce informac\u00ed ne\u017e obvykle. <a href=\"https:\/\/premiumalu.com\/cs\/produkt\/slitina-hliniku-7055\/\">Plech 7055<\/a> se dod\u00e1v\u00e1 podle AMS 4206 a lisovan\u00e1 ty\u010d, trubka a profil podle AMS 4324, 4336 nebo 4337, a p\u0159\u00edpona stavu v\u00e1m \u0159\u00edk\u00e1, kterou formu kupujete: T7751 je plech, T77511 je v\u00fdlisek. Nab\u00eddka, kter\u00e1 ti\u0161e p\u0159ev\u00e1d\u00ed jedno na druh\u00e9, je nab\u00eddkou na jin\u00fd d\u00edl. Forma nen\u00ed omezen\u00edm \u2014 pr\u016f\u0159ezy, velikosti a profily mimo standardn\u00ed rozsah se vyr\u00e1b\u011bj\u00ed podle va\u0161eho v\u00fdkresu.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u010cty\u0159i \u0159\u00e1dky v popt\u00e1vce odvedou v\u011bt\u0161inu pr\u00e1ce:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Rozhoduj\u00edc\u00ed specifikace a forma<\/strong> \u2014 AMS 4206 pro plech; AMS 4324, 4336 nebo 4337 pro v\u00fdlisky.<\/li>\n\n\n\n<li><strong>Temperament<\/strong> \u2014 T7751 nebo T77511 pro pevnost, T74511 nebo T76511 tam, kde volbu \u0159\u00edd\u00ed rezerva proti SCC.<\/li>\n\n\n\n<li><strong>Rozhoduj\u00edc\u00ed tlou\u0161\u0165ka<\/strong> \u2014 publikovan\u00e1 minima jsou tabelov\u00e1na podle sloupce tlou\u0161\u0165ky a siln\u00e9 pr\u016f\u0159ezy nesou ni\u017e\u0161\u00ed hodnoty.<\/li>\n\n\n\n<li><strong>\u00darove\u0148 dokumentace<\/strong> \u2014 MTC jako standard, plus nez\u00e1visl\u00e9 zku\u0161ebn\u00ed zpr\u00e1vy tam, kde je program vy\u017eaduje.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Co se t\u00fd\u010de dokument\u016f, MTC, kter\u00e9 se p\u0159ilo\u017e\u00ed ke ka\u017ed\u00e9 objedn\u00e1vce, nese chemick\u00e9 a mechanick\u00e9 v\u00fdsledky pro danou \u0161ar\u017ei, co\u017e je d\u016fkaz, kter\u00fd leteck\u00fd nebo obrann\u00fd kupuj\u00edc\u00ed skute\u010dn\u011b p\u0159ezkoum\u00e1v\u00e1. Chemick\u00e9, mechanick\u00e9 a ultrazvukov\u00e9 zpr\u00e1vy SGS jsou k dispozici na vy\u017e\u00e1d\u00e1n\u00ed za p\u0159\u00edplatek tam, kde je vy\u017eadov\u00e1no ov\u011b\u0159en\u00ed t\u0159et\u00ed stranou. Pokud v\u00e1\u0161 projekt pracuje s \u00farovn\u011bmi certifik\u00e1t\u016f, EN 10204 3.1 je podeps\u00e1n vlastn\u00edm inspek\u010dn\u00edm z\u00e1stupcem v\u00fdrobce, zat\u00edmco 3.2 p\u0159id\u00e1v\u00e1 nez\u00e1visl\u00fd spolupodpis.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Z\u00e1v\u011br<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/premiumalu.com\/cs\/produkt\/slitina-hliniku-7055\/\" data-type=\"product\" data-id=\"8067\">Hlin\u00edk 7055<\/a> je pevnostn\u00ed strop tv\u00e1\u0159en\u00e9ho hlin\u00edku v tlust\u00e9m pr\u016f\u0159ezu a cena tohoto stropu je konkr\u00e9tn\u00ed: kr\u00e1tk\u00fd seznam forem a AMS stav\u016f vytvrzen\u00ed, \u017e\u00e1dn\u00e9 tavn\u00e9 sva\u0159ov\u00e1n\u00ed na nosn\u00e9 konstrukci a protikorozn\u00ed ochrana, kter\u00e1 mus\u00ed b\u00fdt navr\u017eena, nikoli p\u0159edpokl\u00e1d\u00e1na. Je to volba \u0159\u00edzen\u00e1 tlakem, nikoli univerz\u00e1ln\u00ed upgrade.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Dod\u00e1v\u00e1me plech 7055 a extrudovan\u00e9 ty\u010de, trubky a profily podle va\u0161eho v\u00fdkresu, v\u010detn\u011b stav\u016f vytvrzen\u00ed typu T7 a nestandardn\u00edch rozm\u011br\u016f, kter\u00e9 spadaj\u00ed mimo standardn\u00ed rozsah, s MTC ke ka\u017ed\u00e9 objedn\u00e1vce.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Po\u0161lete n\u00e1m v\u00fdkres s stavem vytvrzen\u00ed a zat\u011b\u017eovac\u00edm p\u0159\u00edpadem pro posouzen\u00ed vhodnosti jakosti.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u010casto kladen\u00e9 ot\u00e1zky<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Je 7075 p\u0159\u00edmou n\u00e1hradou za 7055?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ne tam, kde design ur\u010duje tlou\u0161\u0165ka nebo tlakov\u00e9 zat\u00ed\u017een\u00ed. 7055 znateln\u011b zvy\u0161uje minim\u00e1ln\u00ed mez kluzu v tlust\u00e9m plechu, tak\u017ee d\u00edl dimenzovan\u00fd na 7075-T6 m\u016f\u017ee b\u00fdt p\u0159edimenzovan\u00fd, nikoli bezpe\u010dn\u00fd. P\u0159ed p\u0159echodem kter\u00fdmkoli sm\u011brem znovu prove\u010fte kontrolu pevnosti a hou\u017eevnatosti v\u016f\u010di va\u0161emu vlastn\u00edmu pr\u016f\u0159ezu.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Kolik stoj\u00ed 7055 a jak\u00e1 je minim\u00e1ln\u00ed objedn\u00e1vka?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">O\u010dek\u00e1vejte pr\u00e9mii v leteck\u00e9 kvalit\u011b oproti 7075, proto p\u0159ed porovn\u00e1v\u00e1n\u00edm nab\u00eddek stanovte stav vytvrzen\u00ed a formu. Standardn\u00ed rozm\u011bry expedujeme ze skladu; nestandardn\u00ed stavy vytvrzen\u00ed a rozm\u011bry se vyr\u00e1b\u011bj\u00ed jako zak\u00e1zkov\u00e1 v\u00fdroba s n\u00edzk\u00fdm MOQ, obvykle 10\u201360 dn\u00ed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Jak\u00e9 dokumenty doprov\u00e1zej\u00ed objedn\u00e1vku 7055?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ke ka\u017ed\u00e9 objedn\u00e1vce je p\u0159ilo\u017een hutn\u00ed osv\u011bd\u010den\u00ed (mill test certificate) s uveden\u00edm chemick\u00e9ho slo\u017een\u00ed a mechanick\u00fdch v\u00fdsledk\u016f pro danou \u0161ar\u017ei. Chemick\u00e9, mechanick\u00e9 a ultrazvukov\u00e9 zpr\u00e1vy SGS jsou k dispozici na vy\u017e\u00e1d\u00e1n\u00ed za p\u0159\u00edplatek a EN 10204 3.2 p\u0159id\u00e1v\u00e1 spolupodpis t\u0159et\u00ed strany.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Pro\u010d nelze 7055 sva\u0159ovat?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Proto\u017ee obsah m\u011bdi, kter\u00fd d\u00e1v\u00e1 slitin\u011b jej\u00ed pevnost, je stejn\u00fd prvek, kter\u00fd ni\u010d\u00ed tavn\u00fd svar. Tepeln\u011b ovlivn\u011bn\u00e1 z\u00f3na se p\u0159est\u00e1rne, ztrat\u00ed pevnost a z\u00edsk\u00e1 riziko nap\u011b\u0165ov\u00e9 koroze a \u017e\u00e1dn\u00e9 posva\u0159ovac\u00ed o\u0161et\u0159en\u00ed to nenaprav\u00ed. Konstrukci z 7055 m\u00edsto toho spojujte mechanicky nebo lepen\u00edm.<\/p>","protected":false},"excerpt":{"rendered":"<p>7055 is one of the highest-strength wrought aluminium alloys in commercial supply, built on a higher zinc-and-copper load than the 7xxx grades around it. Alcoa introduced it in 1991 \u2014 T7751 for plate, T77511 for extrusions \u2014 aimed squarely at compression-dominated structure: upper wing skins, horizontal stabilizers, and keel beams. The decision it forces is [&hellip;]<\/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 Applications","_seopress_titles_desc":"7055 vs 7075 vs 7150 \u2014 which peak-strength grade fits your part? Compressive yield data, temper and form availability, joining limits, and the sourcing checks that matter.","_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":3,"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/posts\/8806\/revisions"}],"predecessor-version":[{"id":10691,"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/posts\/8806\/revisions\/10691"}],"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}]}}