{"id":7754,"date":"2025-02-04T14:36:34","date_gmt":"2025-02-04T14:36:34","guid":{"rendered":"https:\/\/premiumalu.com\/?p=7754"},"modified":"2026-08-30T13:45:43","modified_gmt":"2026-08-30T13:45:43","slug":"marine-grade-aluminum","status":"publish","type":"post","link":"https:\/\/premiumalu.com\/cs\/marine-grade-aluminum\/","title":{"rendered":"Mo\u0159sk\u00fd hlin\u00edk: Kompletn\u00ed pr\u016fvodce v\u00fdb\u011brem"},"content":{"rendered":"<p class=\"wp-block-paragraph\">\u201cMo\u0159sk\u00fd hlin\u00edk\u201d nen\u00ed jedna slitina \u2014 je to popis funkce. Jak\u00fdkoli hlin\u00edk, kter\u00fd dok\u00e1\u017ee p\u0159e\u017e\u00edt desetilet\u00ed slan\u00e9 spr\u0161ky, trval\u00e9ho tahov\u00e9ho zat\u00ed\u017een\u00ed a neust\u00e1l\u00e9ho n\u00e1razu vln, ani\u017e by ztratil struktur\u00e1ln\u00ed integritu, si toto ozna\u010den\u00ed zaslou\u017e\u00ed, a slitiny, kter\u00e9 si ho zaslou\u017e\u00ed, maj\u00ed jednu spole\u010dnou v\u011bc: odol\u00e1vaj\u00ed p\u016fsoben\u00ed chlorid\u016f a \u010dist\u011b se sva\u0159uj\u00ed, proto\u017ee lo\u010f je z velk\u00e9 \u010d\u00e1sti sva\u0159ovan\u00fd box \u017eij\u00edc\u00ed v oce\u00e1nu. Rodin\u011b dominuje \u0159ada 5000 (hlin\u00edk-ho\u0159\u010d\u00edk), p\u0159i\u010dem\u017e \u0159ada 6000 pln\u00ed u\u017e\u0161\u00ed roli nad \u010darou ponoru.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tento pr\u016fvodce vysv\u011btluje, jak\u00fd mo\u0159sk\u00fd hlin\u00edk specifikovat pro kterou \u010d\u00e1st, pro\u010d \u0159ada 5000 ovl\u00e1d\u00e1 trup a kam zapad\u00e1 6061-T6 navzdory sv\u00e9 ni\u017e\u0161\u00ed odolnosti v\u016f\u010di mo\u0159sk\u00e9 vod\u011b. Pokud vyb\u00edr\u00e1te materi\u00e1l pro plavidlo nebo pob\u0159e\u017en\u00ed konstrukci, rozhodnut\u00ed se scvrk\u00e1v\u00e1 na jednu ot\u00e1zku: le\u017e\u00ed tato \u010d\u00e1st ve vod\u011b, nad n\u00ed, nebo se tvaruje do slo\u017eit\u00e9ho tvaru?<\/p>\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\/2025\/02\/Marine-Aluminum-Cover.jpg\" alt=\"\" class=\"wp-image-10394\" srcset=\"https:\/\/premiumalu.com\/wp-content\/uploads\/2025\/02\/Marine-Aluminum-Cover.jpg 800w, https:\/\/premiumalu.com\/wp-content\/uploads\/2025\/02\/Marine-Aluminum-Cover-300x225.jpg 300w, https:\/\/premiumalu.com\/wp-content\/uploads\/2025\/02\/Marine-Aluminum-Cover-768x576.jpg 768w, https:\/\/premiumalu.com\/wp-content\/uploads\/2025\/02\/Marine-Aluminum-Cover-600x450.jpg 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Co \u201cmo\u0159sk\u00fd hlin\u00edk\u201d skute\u010dn\u011b znamen\u00e1<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Mo\u0159sk\u00e1 t\u0159\u00edda je standard odolnosti proti korozi a sva\u0159itelnosti, nikoli jedin\u00e9 slo\u017een\u00ed. Slitiny, kter\u00e9 ji nesou, tvo\u0159\u00ed hust\u00fd, samoopravn\u00fd oxidov\u00fd film hlin\u00edku a po sva\u0159en\u00ed si zachov\u00e1vaj\u00ed v\u011bt\u0161inu sv\u00e9 pevnosti \u2014 oboj\u00ed je na plavidle nezbytn\u00e9. Tuto pr\u00e1ci odv\u00e1d\u011bj\u00ed dv\u011b \u0159ady:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u0158ada 5000 (Al-Mg).<\/strong> Nejpou\u017eiteln\u00e1 tepeln\u00fdm zpracov\u00e1n\u00edm; ho\u0159\u010d\u00edk (p\u0159ibli\u017en\u011b 2,5\u20135,5%) tvo\u0159\u00ed stabiln\u00ed tuh\u00fd roztok, kter\u00fd odol\u00e1v\u00e1 p\u016fsoben\u00ed chlorid\u016f. Pevnost poch\u00e1z\u00ed z tv\u00e1\u0159en\u00ed za studena, tak\u017ee b\u011bhem sva\u0159ov\u00e1n\u00ed nevznik\u00e1 \u017e\u00e1dn\u00e1 z\u00f3na ovlivn\u011bn\u00e1 tepeln\u00fdm zpracov\u00e1n\u00edm, kter\u00e1 by m\u011bkla. To je trup, paluba a n\u00e1dr\u017ee.<\/li>\n\n\n\n<li><strong>\u0158ada 6000 (Al-Mg-Si).<\/strong> Tepeln\u011b zpracovateln\u00e1; dosahuje vy\u0161\u0161\u00ed pevnosti ve stavu T6 a lze ji protla\u010dovat do slo\u017eit\u00fdch tvar\u016f, ale jej\u00ed odolnost proti korozi v mo\u0159sk\u00e9 vod\u011b je ni\u017e\u0161\u00ed a m\u016f\u017ee trp\u011bt mezikrystalovou koroz\u00ed v prost\u0159ed\u00ed s chloridy. Z\u016fst\u00e1v\u00e1 nad \u010darou ponoru \u2014 st\u011b\u017en\u011b, r\u00e1my, z\u00e1bradl\u00ed.<\/li>\n<\/ul>\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\/2025\/02\/What-Marine-Grade-Aluminum-Actually-Means.jpg\" alt=\"\" class=\"wp-image-10399\" srcset=\"https:\/\/premiumalu.com\/wp-content\/uploads\/2025\/02\/What-Marine-Grade-Aluminum-Actually-Means.jpg 800w, https:\/\/premiumalu.com\/wp-content\/uploads\/2025\/02\/What-Marine-Grade-Aluminum-Actually-Means-300x225.jpg 300w, https:\/\/premiumalu.com\/wp-content\/uploads\/2025\/02\/What-Marine-Grade-Aluminum-Actually-Means-768x576.jpg 768w, https:\/\/premiumalu.com\/wp-content\/uploads\/2025\/02\/What-Marine-Grade-Aluminum-Actually-Means-600x450.jpg 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0158ady 2000 (Al-Cu) a 7000 (Al-Zn-Mg) jsou z\u00e1m\u011brn\u011b vylou\u010deny z mo\u0159sk\u00e9ho pou\u017eit\u00ed, pokud nejsou speci\u00e1ln\u011b pl\u00e1tovan\u00e9 a povlakovan\u00e9: jejich m\u011b\u010f nebo vysok\u00fd obsah zinku je \u010din\u00ed n\u00e1chyln\u00fdmi ke korozi ve slan\u00e9 vod\u011b. Spr\u00e1vn\u00e1 mo\u0159sk\u00e1 specifikace je t\u00e9m\u011b\u0159 v\u017edy \u010d\u00edslo z \u0159ady 5000, s v\u00fdjimkou 6061-T6 jako konstruk\u010dn\u00ed v\u00fdjimky.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pro\u010d \u0159ada 5000 dominuje v mo\u0159sk\u00fdch aplikac\u00edch<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">D\u016fvod, pro\u010d se slitin\u00e1m 5xxx \u0159\u00edk\u00e1 \u201cstr\u00e1\u017eci mo\u0159\u00ed\u201d, je kombinace t\u0159\u00ed vlastnost\u00ed, kter\u00e9 slitiny 6xxx pouze \u010d\u00e1ste\u010dn\u011b dosahuj\u00ed:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Odolnost proti korozi v mo\u0159sk\u00e9 vod\u011b.<\/strong> Ho\u0159\u010d\u00edk v tuh\u00e9m roztoku d\u00e1v\u00e1 slitin\u00e1m 5xxx vynikaj\u00edc\u00ed odolnost proti bodov\u00e9 a \u0161t\u011brbinov\u00e9 korozi v prost\u0159ed\u00ed s chloridy, bez nutnosti speci\u00e1ln\u00edho tepeln\u00e9ho zpracov\u00e1n\u00ed. Slitiny \u0159ady 6000 jsou dobr\u00e9 v atmosf\u00e9\u0159e a p\u0159i m\u00edrn\u00e9m mo\u0159sk\u00e9m zat\u00ed\u017een\u00ed, ale v trval\u00e9 slan\u00e9 vod\u011b zaost\u00e1vaj\u00ed.<\/li>\n\n\n\n<li><strong>Integrita svaru.<\/strong> Proto\u017ee slitiny 5xxx nejsou tepeln\u011b zpracovateln\u00e9, z\u00f3na ovlivn\u011bn\u00e1 teplem svaru nep\u0159est\u00e1rne a neztr\u00e1c\u00ed pevnost jako u tepeln\u011b zpracovan\u00e9 slitiny. \u00da\u010dinnost spoje po sva\u0159en\u00ed z\u016fst\u00e1v\u00e1 kolem 70\u201380% (vy\u0161\u0161\u00ed u 5083), co\u017e je d\u016fvod, pro\u010d se sva\u0159ovan\u00e9 trupy a n\u00e1dr\u017ee stav\u00ed z 5xxx.<\/li>\n\n\n\n<li><strong>Hou\u017eevnatost p\u0159i n\u00edzk\u00fdch teplot\u00e1ch.<\/strong> Zejm\u00e9na 5083 si zachov\u00e1v\u00e1 ta\u017enost a\u017e do kryogenn\u00edch teplot (p\u0159ibli\u017en\u011b \u2212196 \u00b0C), co\u017e je d\u016fvod, pro\u010d je celosv\u011btov\u00fdm standardem pro n\u00e1dr\u017ee LNG p\u0159epravc\u016f.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Kompromis, kter\u00fd \u0159ada 6xxx m\u00edsto toho nab\u00edz\u00ed, je pevnost na jednotku protla\u010dov\u00e1n\u00ed a povrchov\u00e1 \u00faprava: 6061-T6 se v\u00fdborn\u011b obr\u00e1b\u00ed a eloxuje a dosahuje vy\u0161\u0161\u00ed meze kluzu, ale pat\u0159\u00ed do n\u00e1staveb a armatur, ne do pono\u0159en\u00fdch sko\u0159epin.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">B\u011b\u017en\u00e9 mo\u0159sk\u00e9 slitiny<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0160est slitin pokr\u00fdv\u00e1 t\u00e9m\u011b\u0159 v\u0161echny mo\u0159sk\u00e9 \u00falohy. N\u00ed\u017ee uveden\u00e1 tabulka je rychl\u00fd p\u0159ehled; \u010d\u00e1sti za n\u00ed vysv\u011btluj\u00ed, kdy je ka\u017ed\u00e1 z nich spr\u00e1vnou volbou.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th class=\"has-text-align-left\" data-align=\"left\">Slitina<\/th><th class=\"has-text-align-left\" data-align=\"left\">S\u00e9rie<\/th><th class=\"has-text-align-left\" data-align=\"left\">Mg (%)<\/th><th class=\"has-text-align-left\" data-align=\"left\">Typick\u00e1 pevnost v tahu UTS (MPa)<\/th><th class=\"has-text-align-left\" data-align=\"left\">B\u011b\u017en\u00e9 mo\u0159sk\u00e9 tempery<\/th><th class=\"has-text-align-left\" data-align=\"left\">Nejlep\u0161\u00ed pro<\/th><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">5052<\/td><td class=\"has-text-align-left\" data-align=\"left\">5xxx<\/td><td class=\"has-text-align-left\" data-align=\"left\">2.2\u20132.8<\/td><td class=\"has-text-align-left\" data-align=\"left\">~210\u2013260 (H32 \u2248 228)<\/td><td class=\"has-text-align-left\" data-align=\"left\">H32, H34, O<\/td><td class=\"has-text-align-left\" data-align=\"left\">Palivov\u00e9 n\u00e1dr\u017ee, vnit\u0159n\u00ed panely, n\u00e1stavby, trupy mal\u00fdch lod\u00ed<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">5083<\/td><td class=\"has-text-align-left\" data-align=\"left\">5xxx<\/td><td class=\"has-text-align-left\" data-align=\"left\">4.0\u20134.9<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u2265303 (H116); ~310\u2013315<\/td><td class=\"has-text-align-left\" data-align=\"left\">H116, H321, H111, O<\/td><td class=\"has-text-align-left\" data-align=\"left\">Trupov\u00e9 plechy, paluby, pob\u0159e\u017en\u00ed konstrukce, n\u00e1dr\u017ee LNG<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">5086<\/td><td class=\"has-text-align-left\" data-align=\"left\">5xxx<\/td><td class=\"has-text-align-left\" data-align=\"left\">3.5\u20134.5<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u2265275 (H32); ~290<\/td><td class=\"has-text-align-left\" data-align=\"left\">H32, H34, H116<\/td><td class=\"has-text-align-left\" data-align=\"left\">Rychl\u00e1 plavidla, balastn\u00ed a palivov\u00e9 n\u00e1dr\u017ee, d\u00edly citliv\u00e9 na korozi<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">5454<\/td><td class=\"has-text-align-left\" data-align=\"left\">5xxx<\/td><td class=\"has-text-align-left\" data-align=\"left\">2.4\u20133.0<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u2265250 (H32)<\/td><td class=\"has-text-align-left\" data-align=\"left\">H32, H34, O<\/td><td class=\"has-text-align-left\" data-align=\"left\">Strojovny, potrub\u00ed mo\u0159sk\u00e9 vody, tlakov\u00e9 n\u00e1doby<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">5456<\/td><td class=\"has-text-align-left\" data-align=\"left\">5xxx<\/td><td class=\"has-text-align-left\" data-align=\"left\">4.7\u20135.5<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u2265315 (H321)<\/td><td class=\"has-text-align-left\" data-align=\"left\">H321, H116, O<\/td><td class=\"has-text-align-left\" data-align=\"left\">T\u011b\u017ek\u00e9 konstrukce, n\u00e1mo\u0159n\u00ed panc\u00ed\u0159, ledoborce<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">6061-T6<\/td><td class=\"has-text-align-left\" data-align=\"left\">6xxx<\/td><td class=\"has-text-align-left\" data-align=\"left\">0.8\u20131.2<\/td><td class=\"has-text-align-left\" data-align=\"left\">~310<\/td><td class=\"has-text-align-left\" data-align=\"left\">T6, T651<\/td><td class=\"has-text-align-left\" data-align=\"left\">St\u011b\u017en\u011b, r\u00e1my, z\u00e1bradl\u00ed, n\u00e1stavby (nepono\u0159en\u00e9)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Slitina po slitin\u011b: Kterou vybrat<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>5083 \u2014 standard pro trup.<\/strong> Nejvy\u0161\u0161\u00ed pevnost z netepeln\u011b zpracovateln\u00fdch slitin a referen\u010dn\u00ed mo\u0159sk\u00e1 t\u0159\u00edda. V temper\u00e1ch H116 nebo H321 je stabilizovan\u00e1 proti korozi pod nap\u011bt\u00edm, co\u017e je d\u016fvod, pro\u010d ji klasifika\u010dn\u00ed spole\u010dnosti p\u0159edepisuj\u00ed pro komer\u010dn\u00ed a vojensk\u00e9 trupov\u00e9 plechy. Zachov\u00e1v\u00e1 si tak\u00e9 hou\u017eevnatost p\u0159i kryogenn\u00edch teplot\u00e1ch, tak\u017ee slou\u017e\u00ed z\u00e1rove\u0148 jako slitina pro n\u00e1dr\u017ee LNG. Podrobn\u00fd pr\u016fvodce: n\u00e1\u0161 <a href=\"https:\/\/premiumalu.com\/cs\/zvladnuti-5083-hlinikovych-slitin-odborna-prirucka\/\">pr\u016fvodce slitinami hlin\u00edku 5083<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>5052 \u2014 tvarovateln\u00fd univerz\u00e1l.<\/strong> Ni\u017e\u0161\u00ed obsah ho\u0159\u010d\u00edku znamen\u00e1 st\u0159edn\u00ed pevnost, ale nejlep\u0161\u00ed tvarovatelnost a \u00fanavovou odolnost v rodin\u011b. Oh\u00fdb\u00e1 se, ta\u017e\u00ed a lisuje s mal\u00fdm rizikem prask\u00e1n\u00ed, co\u017e je d\u016fvod, pro\u010d se objevuje v palivov\u00fdch n\u00e1dr\u017e\u00edch, kabinov\u00fdch panelech a nekonstruk\u010dn\u00edch interi\u00e9rech. Pro mal\u00e9 sladkovodn\u00ed nebo rekrea\u010dn\u00ed lod\u011b \u010dasto sta\u010d\u00ed sama o sob\u011b. Podrobn\u00fd pr\u016fvodce: n\u00e1\u0161 <a href=\"https:\/\/premiumalu.com\/cs\/konecny-pruvodce-hlinikem-5052\/\">pr\u016fvodce hlin\u00edkem 5052<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>5086 \u2014 specialista na korozi.<\/strong> Pevnost\u00ed se nach\u00e1z\u00ed mezi 5052 a 5083, ale \u010dasto je hodnocena se stejnou nebo lep\u0161\u00ed odolnost\u00ed proti bodov\u00e9 a \u0161t\u011brbinov\u00e9 korozi, plus dobrou \u017eivotnost\u00ed p\u0159i vibra\u010dn\u00ed \u00fanav\u011b v rozbou\u0159en\u00e9m mo\u0159i. To z n\u00ed \u010din\u00ed silnou volbu pro rychl\u00e1 plavidla, balastn\u00ed n\u00e1dr\u017ee a sou\u010d\u00e1sti, kde by 5052 byla m\u00edrn\u011b pod specifikac\u00ed. Podrobn\u00fd pr\u016fvodce: n\u00e1\u0161 <a href=\"https:\/\/premiumalu.com\/cs\/zakladni-pruvodce-vlastnostmi-a-pouzitim-hliniku-5086\/\">pr\u016fvodce hlin\u00edkem 5086<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>5454 \u2014 volba pro tepl\u00e9 prost\u0159ed\u00ed.<\/strong> P\u0159ibli\u017en\u011b o 22 % pevn\u011bj\u0161\u00ed ne\u017e 5052 s dobrou sva\u0159itelnost\u00ed, ale kl\u00ed\u010dov\u00fd je ni\u017e\u0161\u00ed obsah ho\u0159\u010d\u00edku: vysoce ho\u0159\u010d\u00edkov\u00e9 slitiny \u0159ady 5xxx senzibilizuj\u00ed (precipitace \u03b2-f\u00e1ze na hranic\u00edch zrn) p\u0159i dlouhodob\u00e9m vystaven\u00ed teplot\u00e1m nad p\u0159ibli\u017en\u011b 65 \u00b0C (150 \u00b0F), co\u017e vyvol\u00e1v\u00e1 n\u00e1chylnost k mezikrystalov\u00e9mu korozn\u00edmu prask\u00e1n\u00ed. Slitina 5454 z\u016fst\u00e1v\u00e1 bezpe\u010dn\u00e1 ve strojovn\u00e1ch a v okol\u00ed hork\u00e9ho mo\u0159sk\u00e9ho potrub\u00ed. Podrobn\u00fd pr\u016fvodce: n\u00e1\u0161 <a href=\"https:\/\/premiumalu.com\/cs\/pochopeni-pevnosti-v-tahu-hliniku-5454-ve-strojirenstvi\/\">pr\u016fvodce hlin\u00edkem 5454<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>5456 \u2014 t\u011b\u017ek\u00e1 varianta s vysokou pevnost\u00ed.<\/strong> Nejsiln\u011bj\u0161\u00ed z mo\u0159sk\u00fdch slitin \u0159ady 5xxx, pou\u017e\u00edvan\u00e1 pro n\u00e1mo\u0159n\u00ed panc\u00e9\u0159ov\u00e1n\u00ed a konstrukce s extr\u00e9mn\u00edm zat\u00ed\u017een\u00edm. Vysok\u00fd obsah ho\u0159\u010d\u00edku vy\u017eaduje stabilizovan\u00e9 temperov\u00e1n\u00ed H321, aby byla udr\u017eena n\u00edzk\u00e1 citlivost na korozn\u00ed prask\u00e1n\u00ed, proto se jedn\u00e1 o materi\u00e1l s p\u0159edepsanou jakost\u00ed, nikoli o univerz\u00e1ln\u00ed n\u00e1hradu za 5083. Podrobn\u00fd pr\u016fvodce: n\u00e1\u0161 <a href=\"https:\/\/premiumalu.com\/cs\/5456-hlinik-vas-komplexni-pruvodce-slitinou\/\">pr\u016fvodce hlin\u00edkem 5456<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>6061-T6 \u2014 konstruk\u010dn\u00ed profily.<\/strong> Tepeln\u011b zpracovateln\u00fd, vysokopevnostn\u00ed a nejlep\u0161\u00ed ze skupiny pro obr\u00e1b\u011bn\u00ed a eloxov\u00e1n\u00ed, proto je standardem pro st\u011b\u017en\u011b, r\u00e1my, z\u00e1bradl\u00ed a n\u00e1stavbov\u00e9 armatury. Jeho slabinou je mo\u0159sk\u00e1 voda: m\u016f\u017ee trp\u011bt mezikrystalovou a \u0161t\u011brbinovou koroz\u00ed, proto se p\u0159edepisuje pro konstrukce nad vodou a mus\u00ed b\u00fdt opat\u0159en povlakem a katodickou ochranou, pokud se nach\u00e1z\u00ed v bl\u00edzkosti vody nebo ve vod\u011b. Podrobn\u00fd pr\u016fvodce: n\u00e1\u0161 <a href=\"https:\/\/premiumalu.com\/cs\/premiove-hlinikove-plechy-6061-t6-pruvodce-zdroji\/\">pr\u016fvodce 6061-T6<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Jak vybrat: Podle aplikace<\/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\/2025\/02\/Marine-Grade-Aluminum-Application.jpg\" alt=\"\" class=\"wp-image-10397\" srcset=\"https:\/\/premiumalu.com\/wp-content\/uploads\/2025\/02\/Marine-Grade-Aluminum-Application.jpg 800w, https:\/\/premiumalu.com\/wp-content\/uploads\/2025\/02\/Marine-Grade-Aluminum-Application-300x225.jpg 300w, https:\/\/premiumalu.com\/wp-content\/uploads\/2025\/02\/Marine-Grade-Aluminum-Application-768x576.jpg 768w, https:\/\/premiumalu.com\/wp-content\/uploads\/2025\/02\/Marine-Grade-Aluminum-Application-600x450.jpg 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Nejrychlej\u0161\u00ed cesta ke spr\u00e1vn\u00e9 specifikaci je p\u0159izp\u016fsobit d\u00edl slitin\u011b, nikoli naopak.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th class=\"has-text-align-left\" data-align=\"left\">D\u00edl \/ stav<\/th><th class=\"has-text-align-left\" data-align=\"left\">Specifikace<\/th><th class=\"has-text-align-left\" data-align=\"left\">D\u016fvod<\/th><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Hlavn\u00ed trup, slan\u00e1 voda, klasifikovan\u00e9 plavidlo<\/td><td class=\"has-text-align-left\" data-align=\"left\">5083-H116 \/ H321<\/td><td class=\"has-text-align-left\" data-align=\"left\">Nejvy\u0161\u0161\u00ed pevnost \u0159ady 5xxx, certifikovan\u00e1 odolnost proti SCC<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Mal\u00e9 rekrea\u010dn\u00ed plavidlo (&lt;10 m)<\/td><td class=\"has-text-align-left\" data-align=\"left\">5052-H32 nebo 5083<\/td><td class=\"has-text-align-left\" data-align=\"left\">5052 pro cenu\/tv\u00e1\u0159en\u00ed; 5083 p\u0159i vy\u0161\u0161\u00edm zat\u00ed\u017een\u00ed<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Palubn\u00ed a n\u00e1stavbov\u00e9 konstrukce<\/td><td class=\"has-text-align-left\" data-align=\"left\">5083 (konstruk\u010dn\u00ed) + 5052 (nekonstruk\u010dn\u00ed)<\/td><td class=\"has-text-align-left\" data-align=\"left\">Pevnost tam, kde je pot\u0159eba, tv\u00e1\u0159itelnost jinde<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Palivov\u00e9 a vodn\u00ed n\u00e1dr\u017ee<\/td><td class=\"has-text-align-left\" data-align=\"left\">5052-H32 nebo 5086<\/td><td class=\"has-text-align-left\" data-align=\"left\">Tv\u00e1\u0159itelnost (5052) nebo korozn\u00ed rezerva (5086)<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Rychl\u00e1 plavidla, cyklick\u00e9 zat\u00ed\u017een\u00ed<\/td><td class=\"has-text-align-left\" data-align=\"left\">5086<\/td><td class=\"has-text-align-left\" data-align=\"left\">Lep\u0161\u00ed odolnost proti vibra\u010dn\u00ed \u00fanav\u011b ne\u017e 5083<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Strojovna, zv\u00fd\u0161en\u00e1 teplota<\/td><td class=\"has-text-align-left\" data-align=\"left\">5454<\/td><td class=\"has-text-align-left\" data-align=\"left\">Bezpe\u010dn\u00e9 nad 65 \u00b0C tam, kde vysoce ho\u0159\u010d\u00edkov\u00e9 5xxx senzibilizuj\u00ed<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">N\u00e1mo\u0159n\u00ed panc\u00e9\u0159ov\u00e1n\u00ed, extr\u00e9mn\u00ed zat\u00ed\u017een\u00ed<\/td><td class=\"has-text-align-left\" data-align=\"left\">5456-H321<\/td><td class=\"has-text-align-left\" data-align=\"left\">Nejvy\u0161\u0161\u00ed pevnost \u0159ady 5xxx, stabilizovan\u00e9 temperov\u00e1n\u00ed<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">St\u011b\u017en\u011b, r\u00e1my, z\u00e1bradl\u00ed (nad vodou)<\/td><td class=\"has-text-align-left\" data-align=\"left\">6061-T6<\/td><td class=\"has-text-align-left\" data-align=\"left\">Pevnost + eloxov\u00e1n\u00ed; opat\u0159it povlakem v bl\u00edzkosti vody<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Pod \u010darou ponoru<\/td><td class=\"has-text-align-left\" data-align=\"left\">Pouze 5xxx<\/td><td class=\"has-text-align-left\" data-align=\"left\">Nikdy nep\u0159edepisovat 6xxx pro pono\u0159en\u00e9 aplikace<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Mo\u0159sk\u00e1 temperov\u00e1n\u00ed: H116\/H321 vs H32 vs O<\/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\/2025\/02\/Marine-Aluminum-Temper-Selection-1.jpg\" alt=\"\" class=\"wp-image-10398\" srcset=\"https:\/\/premiumalu.com\/wp-content\/uploads\/2025\/02\/Marine-Aluminum-Temper-Selection-1.jpg 800w, https:\/\/premiumalu.com\/wp-content\/uploads\/2025\/02\/Marine-Aluminum-Temper-Selection-1-300x225.jpg 300w, https:\/\/premiumalu.com\/wp-content\/uploads\/2025\/02\/Marine-Aluminum-Temper-Selection-1-768x576.jpg 768w, https:\/\/premiumalu.com\/wp-content\/uploads\/2025\/02\/Marine-Aluminum-Temper-Selection-1-600x450.jpg 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Temperov\u00e1n\u00ed \u0159\u00edd\u00ed pevnost i korozn\u00ed chov\u00e1n\u00ed a pro mo\u0159sk\u00e9 aplikace maj\u00ed stabilizovan\u00e1 temperov\u00e1n\u00ed z\u00e1sadn\u00ed v\u00fdznam:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>H116 \/ H321.<\/strong> Specificky stabilizovan\u00e1 pro mo\u0159sk\u00e9 pou\u017eit\u00ed; odol\u00e1vaj\u00ed mezikrystalov\u00e9 korozi a delaminaci a jsou standardem pro kritick\u00e9 trupov\u00e9 konstrukce. H116 je tv\u00e1\u0159en\u00fd za studena a pot\u00e9 stabilizovan\u00fd; H321 p\u0159id\u00e1v\u00e1 mal\u00e9 p\u011bchov\u00e1n\u00ed za studena po roztokov\u00e9m \u017e\u00edh\u00e1n\u00ed. Vlastnosti jsou podobn\u00e9; H116 je b\u011b\u017en\u00e9 v Evrop\u011b a Asii, H321 v Severn\u00ed Americe.<\/li>\n\n\n\n<li><strong>H32 \/ H34.<\/strong> Zpevn\u011bno tv\u00e1\u0159en\u00edm a stabilizov\u00e1no \u2014 rovnov\u00e1ha mezi pevnost\u00ed a tv\u00e1\u0159itelnost\u00ed pro plechy vy\u017eaduj\u00edc\u00ed oh\u00fdb\u00e1n\u00ed nebo v\u00e1lcov\u00e1n\u00ed.<\/li>\n\n\n\n<li><strong>H111 \/ H112.<\/strong> \u010c\u00e1ste\u010dn\u00e9 \u017e\u00edh\u00e1n\u00ed nebo stav po v\u00fdrob\u011b; pou\u017e\u00edv\u00e1 se tam, kde kone\u010dn\u00e9 temperov\u00e1n\u00ed nen\u00ed kritick\u00e9 a rozhoduj\u00edc\u00ed je tv\u00e1\u0159itelnost.<\/li>\n\n\n\n<li><strong>O.<\/strong> Pln\u011b \u017e\u00edh\u00e1no; maxim\u00e1ln\u00ed tv\u00e1\u0159itelnost pro hlubokota\u017en\u00e9 d\u00edly, jako jsou p\u0159ep\u00e1\u017eky n\u00e1dr\u017e\u00ed.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Jedno upozorn\u011bn\u00ed plat\u00ed pro v\u0161echny vysoce ho\u0159\u010d\u00edkov\u00e9 slitiny 5xxx: vyvarujte se dlouhodob\u00e9ho provozu nad p\u0159ibli\u017en\u011b 65 \u00b0C (150 \u00b0F), kde precipitace \u03b2-f\u00e1ze naru\u0161uje korozn\u00ed odolnost. P\u0159esn\u011b proto se aplikace ve strojovn\u00e1ch a u hork\u00e9ho potrub\u00ed p\u0159ikl\u00e1n\u011bj\u00ed ke slitin\u011b 5454.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pr\u00e1ce s mo\u0159sk\u00fdm hlin\u00edkem<\/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\/2025\/02\/Risk-od-marine-grade.jpg\" alt=\"\" class=\"wp-image-10400\" srcset=\"https:\/\/premiumalu.com\/wp-content\/uploads\/2025\/02\/Risk-od-marine-grade.jpg 800w, https:\/\/premiumalu.com\/wp-content\/uploads\/2025\/02\/Risk-od-marine-grade-300x225.jpg 300w, https:\/\/premiumalu.com\/wp-content\/uploads\/2025\/02\/Risk-od-marine-grade-768x576.jpg 768w, https:\/\/premiumalu.com\/wp-content\/uploads\/2025\/02\/Risk-od-marine-grade-600x450.jpg 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Sva\u0159ov\u00e1n\u00ed.<\/strong> Pro z\u00e1kladn\u00ed materi\u00e1l 5xxx pou\u017eijte p\u0159\u00eddavn\u00fd materi\u00e1l 5xxx \u2014 ER5356 je obecn\u00e1 volba, ER5183 tam, kde 5083 vy\u017eaduje shodnou pevnost svaru, ER5554 pro barevn\u00fd soulad 5454 po eloxov\u00e1n\u00ed. Pro 6061 se pou\u017e\u00edv\u00e1 ER4043 nebo ER5356. Nesva\u0159ujte z\u00e1kladn\u00ed materi\u00e1ly 5xxx a 6xxx dohromady s o\u010dek\u00e1v\u00e1n\u00edm shodn\u00e9ho svaru; pokud je mus\u00edte spojit, ER5356 je kompromisn\u00ed p\u0159\u00eddavn\u00fd materi\u00e1l a svar bude p\u0159edimenzovan\u00fd na jedn\u00e9 stran\u011b a poddimenzovan\u00fd na druh\u00e9. Zachov\u00e1n\u00ed pevnosti po sva\u0159ov\u00e1n\u00ed je p\u0159ibli\u017en\u011b 70\u201380 % u slitin 5xxx a ni\u017e\u0161\u00ed u 6xxx.<\/li>\n\n\n\n<li><strong>Tv\u00e1\u0159en\u00ed.<\/strong> Slitina 5052 se tv\u00e1\u0159\u00ed nejt\u011bsn\u011bji; 5083 a 5456 vy\u017eaduj\u00ed v\u011bt\u0161\u00ed polom\u011bry ohybu a \u0159\u00edzen\u00e9 n\u00e1stroje. P\u0159ed schv\u00e1len\u00edm n\u00e1vrhu ov\u011b\u0159te minim\u00e1ln\u00ed polom\u011br ohybu na z\u00e1klad\u011b tlou\u0161\u0165ky a temperov\u00e1n\u00ed.<\/li>\n\n\n\n<li><strong>Protikorozn\u00ed ochrana.<\/strong> Eloxov\u00e1n\u00ed slitin \u0159ady 5xxx je omezen\u00e9 (m\u016f\u017ee ze\u0161ednout a povrch bohat\u00fd na ho\u0159\u010d\u00edk je problematick\u00fd), tak\u017ee ochrana pro mo\u0159sk\u00e9 prost\u0159ed\u00ed je obvykle kvalitn\u00ed epoxidov\u00fd n\u00e1t\u011br plus ob\u011btovan\u00e9 anody \u2014 katodick\u00e1 ochrana je to, co skute\u010dn\u011b zastavuje d\u016flkovou korozi na trupu. Slitina 6061-T6 v bl\u00edzkosti vody nebo ve vod\u011b rovn\u011b\u017e vy\u017eaduje n\u00e1t\u011br a katodickou ochranu a mus\u00ed b\u00fdt elektricky izolov\u00e1na od oceli, m\u011bdi a nerezov\u00e9 oceli, aby se p\u0159ede\u0161lo z\u00e1va\u017en\u00e9mu galvanick\u00e9mu napaden\u00ed.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">V\u00fdhody a omezen\u00ed<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ve srovn\u00e1n\u00ed s ocel\u00ed sni\u017euje mo\u0159sk\u00fd hlin\u00edk hmotnost p\u0159ibli\u017en\u011b na jednu t\u0159etinu, co\u017e zvy\u0161uje rychlost, u\u017eite\u010dn\u00e9 zat\u00ed\u017een\u00ed a palivovou \u00fa\u010dinnost a odstra\u0148uje neust\u00e1l\u00fd cyklus p\u00edskov\u00e1n\u00ed a p\u0159et\u00edr\u00e1n\u00ed. Ve srovn\u00e1n\u00ed se sklolamin\u00e1tem je konstruk\u010dn\u00ed, opraviteln\u00fd sva\u0159ov\u00e1n\u00edm a pln\u011b recyklovateln\u00fd. Omezen\u00ed jsou re\u00e1ln\u00e1: po\u010d\u00e1te\u010dn\u00ed n\u00e1klady na materi\u00e1l jsou vy\u0161\u0161\u00ed, slitiny \u0159ady 5xxx s vysok\u00fdm obsahem ho\u0159\u010d\u00edku vy\u017eaduj\u00ed spr\u00e1vn\u00e9 tepeln\u00e9 zpracov\u00e1n\u00ed a kontrolu teploty, aby se p\u0159ede\u0161lo korozn\u00edmu prask\u00e1n\u00ed pod nap\u011bt\u00edm, a slitiny \u0159ady 6xxx nesm\u00ed b\u00fdt pou\u017e\u00edv\u00e1ny v pono\u0159en\u00e9m provozu. Pokud zvol\u00edte slitinu podle prost\u0159ed\u00ed, n\u00e1klady na \u017eivotn\u00ed cyklus obvykle hovo\u0159\u00ed ve prosp\u011bch hlin\u00edku.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Z\u00e1v\u011br<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Pro trupy, paluby a n\u00e1dr\u017ee pod vodou nebo v jej\u00ed bl\u00edzkosti je odpov\u011bd\u00ed slitina \u0159ady 5000 \u2014 5083-H116\/H321 pro prim\u00e1rn\u00ed konstrukce, 5052 tam, kde dominuje tv\u00e1\u0159en\u00ed a cena, 5086 pro v\u011bt\u0161\u00ed korozn\u00ed rezervu, 5454 pro tepl\u00e9 prostory, 5456 pro extr\u00e9mn\u00ed zat\u00ed\u017een\u00ed. Slitina 6061-T6 si sv\u00e9 m\u00edsto zaslou\u017e\u00ed nad vodoryskou, kde z\u00e1le\u017e\u00ed na pevnosti a vytla\u010ditelnosti, nikdy ne pod vodou. P\u0159izp\u016fsobte slitinu sou\u010d\u00e1sti a plavidlo z\u016fstane v dobr\u00e9m stavu po cel\u00e1 desetilet\u00ed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Spole\u010dnost Linsy Aluminum dod\u00e1v\u00e1 mo\u0159sk\u00e9 hlin\u00edkov\u00e9 plechy a desky \u2014 v\u010detn\u011b slitin 5083, 5086 a 5052 \u2014 pro stavbu lod\u00ed a pob\u0159e\u017en\u00ed projekty, s certifik\u00e1ty zkou\u0161ek z hut\u011b u ka\u017ed\u00e9 objedn\u00e1vky, voliteln\u00fdm testov\u00e1n\u00edm SGS a vlastn\u00edm \u0159ez\u00e1n\u00edm, sva\u0159ov\u00e1n\u00edm a povrchovou \u00fapravou. Za\u0161lete n\u00e1m sv\u016fj v\u00fdkres nebo specifikaci a my potvrd\u00edme skladov\u00e9 z\u00e1soby, dodac\u00ed lh\u016ftu a cenovou nab\u00eddku.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sd\u00edlejte sv\u016fj po\u017eadavek na mo\u0159sk\u00fd hlin\u00edk (slitina, tepeln\u00e9 zpracov\u00e1n\u00ed, tlou\u0161\u0165ka, mno\u017estv\u00ed) se spole\u010dnost\u00ed Linsy Aluminum pro kontrolu skladov\u00fdch z\u00e1sob a stanoven\u00ed ceny.<\/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\">Jak\u00e1 je nejlep\u0161\u00ed mo\u0159sk\u00e1 hlin\u00edkov\u00e1 slitina? <\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Neexistuje jedin\u00e1 nejlep\u0161\u00ed \u2014 z\u00e1le\u017e\u00ed na sou\u010d\u00e1sti. Slitina 5083-H116\/H321 je standardem pro trupy a prim\u00e1rn\u00ed konstrukce; 5052-H32 je spr\u00e1vnou volbou pro tv\u00e1\u0159en\u00e9, nekonstruk\u010dn\u00ed nebo mal\u00e9 lodn\u00ed sou\u010d\u00e1sti; 5086 poskytuje v\u011bt\u0161\u00ed korozn\u00ed rezervu. Pro konstrukce nad vodou je b\u011b\u017en\u00e1 slitina 6061-T6.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Lze slitinu 6061-T6 pou\u017e\u00edt ve slan\u00e9 vod\u011b? <\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ano, pro konstrukce nad vodou, jako jsou st\u011b\u017en\u011b, r\u00e1my a z\u00e1bradl\u00ed, kde se vyplat\u00ed jej\u00ed pevnost a eloxovan\u00e1 povrchov\u00e1 \u00faprava. Nem\u011bla by b\u00fdt pou\u017e\u00edv\u00e1na pro pono\u0159en\u00e9 konstrukce nebo konstrukce pod vodoryskou, proto\u017ee je n\u00e1chyln\u00e1 k mezikrystalov\u00e9 a \u0161t\u011brbinov\u00e9 korozi v prost\u0159ed\u00ed s chloridy \u2014 pokud se nach\u00e1z\u00ed v bl\u00edzkosti vody, je t\u0159eba ji opat\u0159it n\u00e1t\u011brem a katodickou ochranou.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Jak\u00fd je rozd\u00edl mezi slitinami 5083-H116 a H321? <\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ob\u011b jsou stabilizovan\u00e9 mo\u0159sk\u00e9 tempery s podobn\u00fdmi vlastnostmi a certifikovanou odolnost\u00ed proti korozn\u00edmu prask\u00e1n\u00ed. H116 je tv\u00e1\u0159ena za studena a pot\u00e9 stabilizov\u00e1na; H321 p\u0159id\u00e1v\u00e1 mal\u00e9 studen\u00e9 prota\u017een\u00ed po roztokov\u00e9m \u017e\u00edh\u00e1n\u00ed. H116 je b\u011b\u017en\u011bj\u0161\u00ed v Evrop\u011b a Asii, H321 v Severn\u00ed Americe; ob\u011b jsou p\u0159ijateln\u00e9 pro mo\u0159sk\u00e9 plechy trup\u016f.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Je slitina 5052 vhodn\u00e1 pro lodn\u00ed trupy? <\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Pro mal\u00e9 rekrea\u010dn\u00ed lod\u011b (obvykle do 10 m) ve sladk\u00e9 vod\u011b nebo m\u00edrn\u00e9m provozu je slitina 5052-H32 \u0161iroce pou\u017e\u00edv\u00e1na a n\u00e1kladov\u011b efektivn\u00ed. Pro v\u011bt\u0161\u00ed plavidla, komer\u010dn\u00ed pracovn\u00ed lod\u011b nebo charterov\u00e9 lod\u011b v\u011bt\u0161ina klasifika\u010dn\u00edch spole\u010dnost\u00ed vy\u017eaduje slitinu 5083-H116\/H321 pro oplechov\u00e1n\u00ed trupu.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Jak chr\u00e1nit mo\u0159sk\u00fd hlin\u00edk p\u0159ed koroz\u00ed? <\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Pou\u017e\u00edvejte kvalitn\u00ed mo\u0159sk\u00fd n\u00e1t\u011br plus ob\u011btovan\u00e9 anody (katodickou ochranu) na trupech a n\u00e1dr\u017e\u00edch \u2014 to je to, co skute\u010dn\u011b zastavuje d\u016flkovou korozi v mo\u0159sk\u00e9 vod\u011b. Samotn\u00e9 eloxov\u00e1n\u00ed je u slitin \u0159ady 5xxx omezen\u00e9. Udr\u017eujte rozd\u00edln\u00e9 kovy (ocel, m\u011b\u010f, nerezovou ocel) elektricky izolovan\u00e9, aby se p\u0159ede\u0161lo galvanick\u00e9 korozi.<\/p>","protected":false},"excerpt":{"rendered":"<p>&#8220;Marine grade aluminum&#8221; is not one alloy \u2014 it is a job description. Any aluminum that can survive decades of salt spray, sustained tensile load, and constant wave pounding without losing structural integrity earns the label, and the alloys that earn it share one thing: they resist chloride attack and weld cleanly, because a boat [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":10394,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"Marine Grade Aluminum: Complete Selection Guide","_seopress_titles_desc":"Marine grade aluminum explained: compare 5052, 5083, 5086, 5454, 5456 and 6061-T6 by part and temper. 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