{"id":8804,"date":"2025-06-15T02:00:13","date_gmt":"2025-06-15T02:00:13","guid":{"rendered":"https:\/\/premiumalu.com\/discover-7003-aluminum-key-facts-you-need-to-know\/"},"modified":"2026-10-08T02:13:50","modified_gmt":"2026-10-08T02:13:50","slug":"objevit-7003-hlinik-klicova-fakta-ktera-potrebujete-vedet","status":"publish","type":"post","link":"https:\/\/premiumalu.com\/cs\/discover-7003-aluminum-key-facts-you-need-to-know\/","title":{"rendered":"Slitina hlin\u00edku 7003: Vlastnosti, tepeln\u00e9 zpracov\u00e1n\u00ed a aplikace"},"content":{"rendered":"<p class=\"wp-block-paragraph\">7003 je sva\u0159iteln\u00e1 slitina pro v\u00fdrobu v\u00fdlisk\u016f ze skupiny 7xxx. Byla vyvinuta tak, aby svarov\u00fd spoj po dobu \u017eivotnosti z\u00edskal zp\u011bt v\u011bt\u0161inu sv\u00e9 pevnosti st\u00e1rnut\u00edm za provozu, m\u00edsto aby byl odeps\u00e1n v tepeln\u011b ovlivn\u011bn\u00e9 z\u00f3n\u011b \u2014 co\u017e je probl\u00e9m, kter\u00fd vylu\u010duje 7075 z konstrukc\u00ed ur\u010den\u00fdch ke sva\u0159ov\u00e1n\u00ed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Toho dosahuje t\u00edm, \u017ee se vzd\u00e1v\u00e1 m\u011bdi. M\u011b\u010f je to, co zvy\u0161uje pevnost 7075 a 7001 na jejich maxim\u00e1ln\u00ed \u00farove\u0148, a je tak\u00e9 to, co je \u010din\u00ed nesva\u0159iteln\u00fdmi a n\u00e1chyln\u00fdmi ke korozn\u00edmu prask\u00e1n\u00ed za nap\u011bt\u00ed; 7003 ji omezuje na 0,20% a m\u00edsto toho se op\u00edr\u00e1 o zinek, ho\u0159\u010d\u00edk a zirkonium. Jeho pevnostn\u00ed t\u0159\u00edda se nach\u00e1z\u00ed pod 7075 a nad 6061 \u2014 smyslem tohoto kompromisu je, \u017ee spoj p\u0159e\u017eije.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Co je hlin\u00edkov\u00e1 slitina 7003?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">7003 je vytvrditeln\u00e1 slitina ze s\u00e9rie 7000. Zinek je hlavn\u00edm leguj\u00edc\u00edm prvkem a ho\u0159\u010d\u00edk tvo\u0159\u00ed zpev\u0148uj\u00edc\u00ed f\u00e1zi MgZn\u2082, p\u0159i\u010dem\u017e m\u011b\u010f je udr\u017eov\u00e1na na dostate\u010dn\u011b n\u00edzk\u00e9 \u00farovni, aby slitina mohla b\u00fdt sva\u0159ov\u00e1na konven\u010dn\u00edmi postupy.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Zirkonium je ur\u010duj\u00edc\u00edm p\u0159\u00eddavkem. P\u0159i 0,05\u20130,25% zvy\u0161uje teplotu rekrystalizace a udr\u017euje jemnou strukturu zrn b\u011bhem vytla\u010dov\u00e1n\u00ed, co\u017e potla\u010duje vznik hork\u00fdch trhlin v tavn\u00e9 l\u00e1zni svaru a pom\u00e1h\u00e1 v\u00fdlisk\u016fm udr\u017eet pevnost po st\u00e1rnut\u00ed. \u017d\u00e1dn\u00e1 m\u011b\u010f plus \u0159\u00edzen\u00e1 struktura zrn je to, co odli\u0161uje 7003 od jakost\u00ed 7xxx obsahuj\u00edc\u00edch m\u011b\u010f.<\/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>5.0\u20136.5<\/td><td>Prim\u00e1rn\u00ed zpev\u0148uj\u00edc\u00ed prvek<\/td><\/tr><tr><td>Ho\u0159\u010d\u00edk (Mg)<\/td><td>0.5\u20131.0<\/td><td>Tvo\u0159\u00ed zpev\u0148uj\u00edc\u00ed f\u00e1zi MgZn\u2082<\/td><\/tr><tr><td>Zirkonium (Zr)<\/td><td>0.05\u20130.25<\/td><td>Zjemn\u011bn\u00ed zrn; odolnost v\u016f\u010di vzniku hork\u00fdch trhlin ve svaru<\/td><\/tr><tr><td>Chrom (Cr)<\/td><td>\u22640,20<\/td><td>\u0158\u00edzen\u00ed struktury zrn<\/td><\/tr><tr><td>Mangan (Mn)<\/td><td>\u22640,30<\/td><td>Kontrola stopov\u00fdch prvk\u016f<\/td><\/tr><tr><td>M\u011b\u010f (Cu)<\/td><td>\u22640,20<\/td><td>Udr\u017eov\u00e1no na n\u00edzk\u00e9 \u00farovni kv\u016fli sva\u0159itelnosti a korozn\u00ed odolnosti<\/td><\/tr><tr><td>\u017delezo (Fe)<\/td><td>\u22640,35<\/td><td>Limit ne\u010distot<\/td><\/tr><tr><td>K\u0159em\u00edk (Si)<\/td><td>\u22640,30<\/td><td>Limit ne\u010distot<\/td><\/tr><tr><td>Titan (Ti)<\/td><td>\u22640,20<\/td><td>Zjem\u0148ova\u010d zrna<\/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>Bilance<\/td><td>Nobelmetal<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Rozsahy se \u0159\u00edd\u00ed EN 573-3 a registrac\u00ed AA \u2014 EN AW-7003, chemick\u00e9 ozna\u010den\u00ed AlZn6Mg0,8Zr, UNS A97003. Hustota je p\u0159ibli\u017en\u011b 2,78 g\/cm\u00b3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">P\u0159edev\u0161\u00edm je d\u016fle\u017eit\u00e9 zm\u00ednit jednu v\u011bc o form\u011b: 7003 je p\u0159edev\u0161\u00edm slitina pro vytla\u010dov\u00e1n\u00ed. Ty\u010de, trubky a profily jsou standardn\u00edm sortimentem podle ASTM B221 a EN 755-2 a nejedn\u00e1 se o b\u011b\u017en\u00e9 ozna\u010den\u00ed pro v\u00e1lcovan\u00e9 ploch\u00e9 v\u00fdrobky. Plechy a tenk\u00e9 plechy spadaj\u00ed pod jinou specifikaci, proto p\u0159i popt\u00e1vce uve\u010fte formu a p\u0159\u00edslu\u0161nou normu \u2014 a pokud profil nebo rozm\u011br spad\u00e1 mimo standardn\u00ed rozsah, vyr\u00e1b\u00ed se podle v\u00fdkresu.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Stavy a typick\u00e9 mechanick\u00e9 vlastnosti<\/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\/7003-t5-vs-t6.webp\" alt=\"7003-t5-vs-t6\" class=\"wp-image-10701\" srcset=\"https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7003-t5-vs-t6.webp 800w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7003-t5-vs-t6-300x225.webp 300w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7003-t5-vs-t6-768x576.webp 768w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7003-t5-vs-t6-16x12.webp 16w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7003-t5-vs-t6-600x450.webp 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Stav materi\u00e1lu m\u011bn\u00ed dod\u00e1van\u00fd d\u00edl v\u00edce ne\u017e volba slitiny.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>T5<\/strong> \u2014 ochlazeno z vytla\u010dovac\u00edho lisu a pot\u00e9 um\u011ble st\u00e1rnuto. Toto je obvykl\u00fd a nejekonomi\u010dt\u011bj\u0161\u00ed stav pro profily z 7003.<\/li>\n\n\n\n<li><strong>T6<\/strong> \u2014 rozpou\u0161t\u011bc\u00ed \u017e\u00edh\u00e1n\u00ed, kalen\u00ed a um\u011bl\u00e9 st\u00e1rnut\u00ed. Jeden procesn\u00ed krok nav\u00edc p\u0159in\u00e1\u0161\u00ed vy\u0161\u0161\u00ed pevnost; kalen\u00ed v lisu toho m\u016f\u017ee dos\u00e1hnout u vhodn\u00fdch profil\u016f.<\/li>\n\n\n\n<li><strong>T651<\/strong> \u2014 st\u00e1rnuto a pot\u00e9 odstran\u011bno vnit\u0159n\u00ed pnut\u00ed ta\u017een\u00edm. Nach\u00e1z\u00ed se na stran\u011b ASTM pro d\u00edly, kter\u00e9 budou obr\u00e1b\u011bny na t\u011bsn\u00e9 tolerance.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Temperament<\/td><td>Pevnost v tahu, Rm (MPa)<\/td><td>Mez kluzu, Rp0,2 (MPa)<\/td><td>Prodlou\u017een\u00ed (%)<\/td><td>Z\u00e1klad<\/td><\/tr><tr><td>T5<\/td><td>~350 typicky \/ 310 min<\/td><td>~300 typicky \/ 260 min<\/td><td>10 (A50)<\/td><td>Minim\u00e1ln\u00ed hodnoty podle EN 755-2; typick\u00e9 hodnoty v\u00fdrobce<\/td><\/tr><tr><td>T6<\/td><td>~370\u2013390<\/td><td>~300\u2013320<\/td><td>8\u201312<\/td><td>\u00dadaje v\u00fdrobce; ov\u011b\u0159te proti p\u0159\u00edslu\u0161n\u00e9 norm\u011b<\/td><\/tr><tr><td>T651<\/td><td>~370\u2013390<\/td><td>~300\u2013320<\/td><td>8\u201312<\/td><td>\u00dadaje v\u00fdrobce; stav na stran\u011b ASTM<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Pro n\u00e1vrh \u010dt\u011bte sloupec s minim\u00e1ln\u00edmi hodnotami a pro pl\u00e1nov\u00e1n\u00ed sloupec s typick\u00fdmi hodnotami. EN 755-2 stanovuje spodn\u00ed hranici pro T5 na 260 MPa meze kluzu a 310 MPa pevnosti v tahu, tabelov\u00e1no podle t\u0159\u00eddy tlou\u0161\u0165ky st\u011bny, a typick\u00fd vytla\u010dovan\u00fd materi\u00e1l p\u0159i zkou\u0161k\u00e1ch v\u00fdrazn\u011b p\u0159ekra\u010duje tuto spodn\u00ed hranici. Hodnoty, kter\u00e9 kupuj\u00edc\u00ed m\u016f\u017ee zapsat do v\u00fdkresu, jsou minim\u00e1ln\u00ed hodnoty pro p\u0159\u00edslu\u0161nou t\u0159\u00eddu tlou\u0161\u0165ky, potvrzen\u00e9 na MTC.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">7003 vs. 6061, 7005 a 7075<\/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\/7003-joining-method.webp\" alt=\"7003-joining-method\" class=\"wp-image-10703\" srcset=\"https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7003-joining-method.webp 800w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7003-joining-method-300x225.webp 300w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7003-joining-method-768x576.webp 768w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7003-joining-method-16x12.webp 16w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7003-joining-method-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>Pevnost v tahu, Rm (MPa)<\/td><td>Mez kluzu, Rp0,2 (MPa)<\/td><td>Sva\u0159itelnost<\/td><td>Koroze<\/td><td>Nejvhodn\u011bj\u0161\u00ed pou\u017eit\u00ed<\/td><\/tr><tr><td><a href=\"https:\/\/premiumalu.com\/cs\/kompletni-pruvodce-hlinikem-6061\/\">6061-T6<\/a><\/td><td>~310<\/td><td>~276<\/td><td>Vynikaj\u00edc\u00ed<\/td><td>Dobr\u00fd<\/td><td>Obecn\u00e9 konstruk\u010dn\u00ed pr\u00e1ce; snadn\u00e9 tv\u00e1\u0159en\u00ed a eloxov\u00e1n\u00ed<\/td><\/tr><tr><td>7003-T5<\/td><td>~350<\/td><td>~300<\/td><td>Dobr\u00e9; po sva\u0159ov\u00e1n\u00ed znovu st\u00e1rne<\/td><td>St\u0159edn\u00ed; citliv\u00e9 na korozn\u00ed prask\u00e1n\u00ed za nap\u011bt\u00ed<\/td><td>Vytla\u010dovan\u00e9 sva\u0159ovan\u00e9 r\u00e1my a profily<\/td><\/tr><tr><td><a href=\"https:\/\/premiumalu.com\/cs\/zvladnuti-hlinikove-slitiny-7005-komplexni-pruvodce\/\">7005-T5<\/a><\/td><td>~345<\/td><td>~290<\/td><td>Vynikaj\u00edc\u00ed<\/td><td>M\u00edrn\u00e1<\/td><td>Sva\u0159ovan\u00e9 vysoce pevn\u00e9 r\u00e1my<\/td><\/tr><tr><td><a href=\"https:\/\/premiumalu.com\/cs\/zvladnuti-hlinikove-slitiny-7075-t651-komplexni-pruvodce\/\">7075-T6<\/a><\/td><td>~572<\/td><td>~503<\/td><td>\u0160patn\u00fd<\/td><td>Omezen\u00e9<\/td><td>Leteck\u00e9 a jin\u00e9 d\u00edly s maxim\u00e1ln\u00ed pevnost\u00ed<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Nejprve si polo\u017ete jednu ot\u00e1zku: bude d\u00edl sva\u0159ov\u00e1n? Pokud ano, 7075 vypad\u00e1v\u00e1 ze hry, proto\u017ee v praxi nen\u00ed tavn\u011b sva\u0159iteln\u00e1, a volba se zu\u017euje na 7003, 7005 nebo 6061.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Mezi dv\u011bma mo\u017enostmi ze s\u00e9rie 7000 se typick\u00e9 hodnoty meze kluzu ve stavu T5 li\u0161\u00ed p\u0159ibli\u017en\u011b o 15 MPa, tak\u017ee rozhoduj\u00edc\u00edm faktorem je proces, nikoli pevnost. 7003 se snadn\u011bji vytla\u010duje do tenk\u00fdch, slo\u017eit\u00fdch profil\u016f a l\u00e9pe si tam udr\u017euje strukturu zrn; 7005 obsahuje mangan a je \u010dast\u011bj\u0161\u00ed volbou tam, kde sva\u0159ovan\u00fd r\u00e1m vy\u017eaduje nejvy\u0161\u0161\u00ed pevnost spoje. Pokud je d\u00edl obr\u00e1b\u011bn a nikdy nen\u00ed sva\u0159ov\u00e1n, 6061-T6 z\u016fst\u00e1v\u00e1 levn\u011bj\u0161\u00ed, sn\u00e1ze se tv\u00e1\u0159\u00ed a je mnohem dostupn\u011bj\u0161\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pr\u00e1ce s 7003<\/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\/7003-welding-and-aging.webp\" alt=\"7003-welding-and-aging\" class=\"wp-image-10702\" srcset=\"https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7003-welding-and-aging.webp 800w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7003-welding-and-aging-300x225.webp 300w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7003-welding-and-aging-768x576.webp 768w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7003-welding-and-aging-16x12.webp 16w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7003-welding-and-aging-600x450.webp 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Sva\u0159ov\u00e1n\u00ed<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">7003 se sva\u0159uje p\u0159\u00eddavn\u00fdm dr\u00e1tem 5xxx. ER5356 (EN ISO 18273 AlMg5Cr(A)) je v\u00fdchoz\u00ed volbou, ER5183 (AlMg4,5Mn0,7(A)) se hod\u00ed pro spoje vy\u017eaduj\u00edc\u00ed vy\u0161\u0161\u00ed pevnost ve stavu po sva\u0159ov\u00e1n\u00ed a ER5556 (AlMg4,5MnZr) se objevuje u t\u011b\u017e\u0161\u00edch konstruk\u010dn\u00edch prac\u00ed. M\u011b\u010f je udr\u017eov\u00e1na na n\u00edzk\u00e9 \u00farovni pr\u00e1v\u011b proto, aby se tyto p\u0159\u00eddavn\u00e9 materi\u00e1ly chovaly spr\u00e1vn\u011b.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sva\u0159ov\u00e1n\u00ed st\u00e1le zm\u011bk\u010duje tepeln\u011b ovlivn\u011bnou z\u00f3nu, ale 7003 z n\u00ed z\u00edsk\u00e1v\u00e1 zp\u011bt v\u00edce ne\u017e jakost 7xxx obsahuj\u00edc\u00ed m\u011b\u010f. Publikovan\u00e9 \u00fadaje o slitin\u011b 7003 uv\u00e1d\u011bj\u00ed, \u017ee spoje se vracej\u00ed a\u017e na p\u0159ibli\u017en\u011b 90% vlastnost\u00ed z\u00e1kladn\u00edho materi\u00e1lu, jakmile sva\u0159enec zest\u00e1rne \u2014 p\u0159irozen\u00fdm st\u00e1rnut\u00edm v \u010dase nebo dodate\u010dn\u00fdm um\u011bl\u00fdm st\u00e1rnut\u00edm. Navrhujte spoj na t\u011bchto zest\u00e1rl\u00fdch hodnot\u00e1ch ve stavu po sva\u0159ov\u00e1n\u00ed, nikoli na sloupci T6 z\u00e1kladn\u00edho materi\u00e1lu.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Obr\u00e1b\u011bn\u00ed<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">7003 se obr\u00e1b\u00ed obt\u00ed\u017en\u011bji ne\u017e 6061, tak\u017ee o\u010dek\u00e1vejte v\u011bt\u0161\u00ed opot\u0159eben\u00ed n\u00e1stroje a po\u010d\u00edtejte s ostr\u00fdm n\u00e1strojem s velk\u00fdm \u00fahlem \u010dela a tuh\u00fdm upnut\u00edm. T5 a T6 dosahuj\u00ed \u010dist\u0161\u00edho povrchu ne\u017e m\u011bk\u010d\u00ed stavy. Zbytkov\u00e9 pnut\u00ed ve vytla\u010dovan\u00e9m polotovaru se m\u016f\u017ee projevit jako pohyb b\u011bhem obr\u00e1b\u011bn\u00ed nebo pozd\u011bji b\u011bhem sva\u0159ov\u00e1n\u00ed, proto udr\u017eujte rovnom\u011brn\u00fd \u00fab\u011br materi\u00e1lu po cel\u00e9m pr\u016f\u0159ezu. Tyto stavy jsou tak\u00e9 citliv\u00e9 na vruby, co\u017e znamen\u00e1, \u017ee d\u00edl tvarujte p\u0159ed st\u00e1rnut\u00edm a tepeln\u011b zpracujte a\u017e pot\u00e9 \u2014 ne naopak.<\/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\">Obecn\u00e1 odolnost proti atmosf\u00e9rick\u00e9 korozi je u jakosti 7xxx dobr\u00e1: v\u00fdrazn\u011b p\u0159ed 7075 obsahuj\u00edc\u00ed m\u011b\u010f, za rodinou 6xxx. Mo\u0159sk\u00e9 prost\u0159ed\u00ed je slab\u00fdm m\u00edstem a \u00fadaje o slitin\u011b 7003 hodnot\u00ed odolnost v mo\u0159sk\u00e9m prost\u0159ed\u00ed \u0161patn\u011b, tak\u017ee hol\u00e9 pono\u0159en\u00ed do slan\u00e9 vody nebo chloridov\u00e9ho roztoku nen\u00ed jej\u00ed \u00falohou. Eloxov\u00e1n\u00ed, n\u00e1t\u011br nebo ochrann\u00fd film pokr\u00fdvaj\u00ed v\u011bt\u0161inu venkovn\u00edho a pob\u0159e\u017en\u00edho prost\u0159ed\u00ed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Korozn\u00ed prask\u00e1n\u00ed za nap\u011bt\u00ed vy\u017eaduje samostatnou pozornost. 7003 je n\u00e1chyln\u00e1 k SCC p\u0159i trval\u00e9m tahov\u00e9m nap\u011bt\u00ed ve vlhk\u00e9m prost\u0159ed\u00ed nebo prost\u0159ed\u00ed obsahuj\u00edc\u00edm chloridy, proto ji berte jako n\u00e1vrhov\u00e9 omezen\u00ed, nikoli jako okrajov\u00fd p\u0159\u00edpad: udr\u017eujte trval\u00e9 nap\u011bt\u00ed v rozsahu, kter\u00fd \u00fadaje va\u0161eho dodavatele povoluj\u00ed pro dan\u00fd stav a pr\u016f\u0159ez, a chra\u0148te povrch v\u0161ude, kde je p\u0159\u00edtomna vlhkost.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Provozn\u00ed teplota<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Berte 7003 jako konstruk\u010dn\u00ed slitinu pro pokojovou teplotu. Jako ka\u017ed\u00e1 jakost vytvrzovan\u00e1 precipitac\u00ed p\u0159est\u00e1rne a ztr\u00e1c\u00ed pevnost s rostouc\u00ed provozn\u00ed teplotou, proto u ka\u017ed\u00e9 hork\u00e9 aplikace ov\u011b\u0159te \u00fadaje proti n\u00e1vrhov\u00fdm dat\u016fm specifick\u00fdm pro dan\u00fd stav, m\u00edsto abyste p\u0159edpokl\u00e1dali, \u017ee hodnoty p\u0159i pokojov\u00e9 teplot\u011b plat\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Aplikace<\/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\/7003-structural-applications.webp\" alt=\"7003-structural-applications\" class=\"wp-image-10704\" srcset=\"https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7003-structural-applications.webp 800w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7003-structural-applications-300x225.webp 300w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7003-structural-applications-768x576.webp 768w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7003-structural-applications-16x12.webp 16w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7003-structural-applications-600x450.webp 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Komponenty le\u0161en\u00ed, mont\u00e1\u017en\u00edch plo\u0161in a p\u0159\u00edstupov\u00fdch platforem<\/li>\n\n\n\n<li>Mobiln\u00ed je\u0159\u00e1by, zdvihac\u00ed za\u0159\u00edzen\u00ed a dal\u0161\u00ed sva\u0159ovan\u00e9 nosn\u00e9 konstrukce<\/li>\n\n\n\n<li>Sk\u0159\u00edn\u011b \u017eelezni\u010dn\u00edch a metropolitn\u00edch voz\u016f a konstruk\u010dn\u00ed prvky<\/li>\n\n\n\n<li>R\u00e1my j\u00edzdn\u00edch kol a motocykl\u016f a sportovn\u00ed vybaven\u00ed<\/li>\n\n\n\n<li>Leteck\u00e9 n\u00e1kladn\u00ed kontejnery, r\u00e1my n\u00e1kladn\u00edch automobil\u016f a p\u0159\u00edv\u011bs\u016f<\/li>\n\n\n\n<li>R\u00e1my bateriov\u00fdch pack\u016f pro elektromobily a lehk\u00e9 konstruk\u010dn\u00ed v\u00fdlisky<\/li>\n<\/ul>\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\/7003-selection-limits.webp\" alt=\"7003-selection-limits\" class=\"wp-image-10705\" srcset=\"https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7003-selection-limits.webp 800w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7003-selection-limits-300x225.webp 300w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7003-selection-limits-768x576.webp 768w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7003-selection-limits-16x12.webp 16w, https:\/\/premiumalu.com\/wp-content\/uploads\/2026\/10\/7003-selection-limits-600x450.webp 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Zvolte \u2014 specifikujte 7003, kdy\u017e:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>D\u00edl pot\u0159ebuje vy\u0161\u0161\u00ed pevnost, ne\u017e poskytuje 6061-T6, a bude sva\u0159ov\u00e1n, proto\u017ee 7003 znovu st\u00e1rne sm\u011brem k hodnot\u00e1m z\u00e1kladn\u00edho materi\u00e1lu tam, kde 7075 nelze v\u016fbec sva\u0159ovat.<\/li>\n\n\n\n<li>D\u00edl je vytla\u010dovan\u00fd profil nebo trubka a pr\u016f\u0159ez je tenk\u00fd nebo slo\u017eit\u00fd, kde se chov\u00e1n\u00ed 7003 p\u0159i vytla\u010dov\u00e1n\u00ed vyplat\u00ed.<\/li>\n\n\n\n<li>Provoz je v interi\u00e9ru, nebo povrch bude eloxov\u00e1n, nat\u0159en nebo opat\u0159en filmem.<\/li>\n\n\n\n<li>Trval\u00e9 nap\u011bt\u00ed z\u016fst\u00e1v\u00e1 v mez\u00edch SCC, kter\u00e9 \u00fadaje va\u0161eho dodavatele povoluj\u00ed pro dan\u00fd stav a pr\u016f\u0159ez.<\/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>Je po\u017eadov\u00e1na \u0161pi\u010dkov\u00e1 leteck\u00e1 pevnost nad p\u0159ibli\u017en\u011b 500 MPa meze kluzu. To je dom\u00e9na 7075 nebo 7055.<\/li>\n\n\n\n<li>O\u010dek\u00e1v\u00e1 se hol\u00e9 pono\u0159en\u00ed do slan\u00e9 vody nebo chloridov\u00e9ho roztoku bez povlaku. Pou\u017eijte 5083 nebo jakost 6xxx.<\/li>\n\n\n\n<li>D\u00edl je obr\u00e1b\u011bn a nikdy nen\u00ed sva\u0159ov\u00e1n. 6061-T6 je levn\u011bj\u0161\u00ed, sn\u00e1ze se tv\u00e1\u0159\u00ed a je dostupn\u011bj\u0161\u00ed.<\/li>\n\n\n\n<li>Je pl\u00e1nov\u00e1no t\u011b\u017ek\u00e9 tv\u00e1\u0159en\u00ed za studena po st\u00e1rnut\u00ed. D\u00edl nejprve tvarujte, pot\u00e9 tepeln\u011b zpracujte.<\/li>\n\n\n\n<li>V\u00fdkres po\u017eaduje 7003 jako v\u00e1lcovan\u00fd plech podle normy pro v\u00e1lcovan\u00e9 ploch\u00e9 v\u00fdrobky. P\u0159ed nab\u00eddkou ov\u011b\u0159te formu a jej\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\">7003 je v prvn\u00ed \u0159ad\u011b extruzn\u00ed slitina. Ty\u010de, trubky a profily dle ASTM B221 nebo EN 755-2 tvo\u0159\u00ed standardn\u00ed rozsah a ploch\u00e9 v\u00e1lcovan\u00e9 v\u00fdrobky 7003 spadaj\u00ed pod jinou specifikaci \u2014 proto v popt\u00e1vce uve\u010fte formu a jej\u00ed \u0159\u00edd\u00edc\u00ed normu. Tvar nen\u00ed omezen\u00edm: nestandardn\u00ed pr\u016f\u0159ezy, rozm\u011bry a tvary v\u00fdrobk\u016f 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>\u0158\u00eddic\u00ed norma<\/strong> \u2014 ASTM B221 nebo EN 755-2.<\/li>\n\n\n\n<li><strong>Temperament<\/strong> \u2014 T5, T6 nebo T651, plus zp\u016fsob st\u00e1rnut\u00ed pro ka\u017ed\u00fd sva\u0159ovan\u00fd celek.<\/li>\n\n\n\n<li><strong>Rozhoduj\u00edc\u00ed tlou\u0161\u0165ka st\u011bny<\/strong> \u2014 minim\u00e1ln\u00ed mechanick\u00e9 hodnoty v EN 755-2 jsou tabelov\u00e1ny podle t\u0159\u00eddy tlou\u0161\u0165ky.<\/li>\n\n\n\n<li><strong>\u00darove\u0148 dokumentace<\/strong> \u2014 MTC jako standard; EN 10204 3.1 nebo zpr\u00e1vy SGS tam, kde projekt vy\u017eaduje nez\u00e1visl\u00e9 ov\u011b\u0159en\u00ed.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">K dokument\u016fm: MTC, kter\u00e9 je p\u0159ilo\u017eeno ke ka\u017ed\u00e9 objedn\u00e1vce, obsahuje chemick\u00e9 a mechanick\u00e9 v\u00fdsledky pro danou \u0161ar\u017ei. \u00darovn\u011b certifik\u00e1t\u016f je vhodn\u00e9 m\u00edt spr\u00e1vn\u011b: EN 10204 3.1 je podeps\u00e1n vlastn\u00edm autorizovan\u00fdm inspek\u010dn\u00edm z\u00e1stupcem v\u00fdrobce, zat\u00edmco 3.2 p\u0159id\u00e1v\u00e1 nez\u00e1vislou t\u0159et\u00ed stranu, jako je z\u00e1stupce z\u00e1kazn\u00edka nebo org\u00e1n jako T\u00dcV, BV, SGS \u010di DNV.<\/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-7003\/\" data-type=\"product\" data-id=\"8667\">7003 hlin\u00edk<\/a> v\u00e1m poskytne v\u011bt\u0161inu pevnostn\u00ed v\u00fdhody \u0159ady 7xxx ve form\u011b, kter\u00e1 se \u010dist\u011b extruuje a lze ji skute\u010dn\u011b sva\u0159ovat, ale kompromisy jsou re\u00e1ln\u00e9: korozn\u00ed odolnost je st\u0159edn\u00ed, nap\u011b\u0165ov\u00e1 korozn\u00ed praskavost je skute\u010dn\u00fdm konstruk\u010dn\u00edm limitem a ploch\u00e9 v\u00e1lcovan\u00e9 formy spadaj\u00ed pod jinou specifikaci ne\u017e extruzn\u00ed rozsah.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Dod\u00e1v\u00e1me 7003 v extrudovan\u00e9m profilu, ty\u010d\u00edch a trubk\u00e1ch a vyr\u00e1b\u00edme zak\u00e1zkov\u00e9 tvary, rozm\u011bry a stavy podle va\u0161eho v\u00fdkresu prost\u0159ednictv\u00edm v\u00fdroby s n\u00edzk\u00fdm MOQ s dodac\u00edmi lh\u016ftami 10\u201360 dn\u00ed. Ke ka\u017ed\u00e9 objedn\u00e1vce je p\u0159ilo\u017eeno MTC.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/premiumalu.com\/cs\/kontakt\/\" data-type=\"page\" data-id=\"350\">Po\u0161lete n\u00e1m v\u00fdkres<\/a> s stavem a zp\u016fsobem sva\u0159ov\u00e1n\u00ed pro ov\u011b\u0159en\u00ed formy, stavu a dostupnosti.<\/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\u00e9 je minim\u00e1ln\u00ed objednac\u00ed mno\u017estv\u00ed a dodac\u00ed lh\u016fta pro 7003?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Standardn\u00ed stavy a rozm\u011bry se dod\u00e1vaj\u00ed ze skladu. Nestandardn\u00ed stavy a zak\u00e1zkov\u00e9 rozm\u011bry se vyr\u00e1b\u011bj\u00ed jako v\u00fdroba s n\u00edzk\u00fdm MOQ, obvykle 10\u201360 dn\u00ed, v z\u00e1vislosti na slitin\u011b, rozm\u011bru a zpracov\u00e1n\u00ed. Po\u0161lete v\u00fdkres a mno\u017estv\u00ed, aby oboj\u00ed mohlo b\u00fdt potvrzeno.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Jak\u00e9 dokumenty doprov\u00e1zej\u00ed objedn\u00e1vku 7003?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Certifik\u00e1t zkou\u0161ky z v\u00fdroby (mill test certificate) uv\u00e1d\u011bj\u00edc\u00ed chemick\u00e9 a mechanick\u00e9 v\u00fdsledky pro danou \u0161ar\u017ei, p\u0159ilo\u017een\u00fd ke ka\u017ed\u00e9 objedn\u00e1vce. Chemick\u00e9, mechanick\u00e9 nebo 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 nez\u00e1visl\u00fd spolupodpis.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">M\u016f\u017eete dodat 7003 \u0159ezan\u00e9 na d\u00e9lku nebo obroben\u00e9 podle v\u00fdkresu?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ano. Extrudovan\u00e9 ty\u010de, trubky a profily se \u0159e\u017eou na kone\u010dn\u00e9 d\u00e9lky a vlastn\u00ed CNC obr\u00e1b\u011bn\u00ed zahrnuje vrtan\u00e9, z\u00e1vitovan\u00e9 a fr\u00e9zovan\u00e9 prvky. Za\u0161lete v\u00fdkres s povrchov\u00fdmi \u00fapravami a tolerancemi, aby bylo mo\u017en\u00e9 materi\u00e1l a zpracov\u00e1n\u00ed nacenit spole\u010dn\u011b.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">M\u016f\u017ee 7003 nahradit 6061 ve sva\u0159ovan\u00e9m r\u00e1mu?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u016f\u017ee, a p\u0159in\u00e1\u0161\u00ed pevnost, nikoli \u00fasporu n\u00e1klad\u016f. 7003 se sva\u0159uje s p\u0159\u00eddavn\u00fdm materi\u00e1lem \u0159ady 5xxx a n\u00e1sledn\u011b se p\u0159est\u00e1rne sm\u011brem k hodnot\u00e1m z\u00e1kladn\u00edho materi\u00e1lu, zat\u00edmco 6061 ztr\u00e1c\u00ed pevnost v tepeln\u011b ovlivn\u011bn\u00e9 z\u00f3n\u011b trvale. Tam, kde r\u00e1m nepot\u0159ebuje vy\u0161\u0161\u00ed pevnost, z\u016fst\u00e1v\u00e1 6061 levn\u011bj\u0161\u00ed cestou.<\/p>","protected":false},"excerpt":{"rendered":"<p>7003 is a weldable 7xxx extrusion alloy. It was developed so that a welded joint recovers most of its strength during service aging instead of being written off in the heat-affected zone \u2014 the problem that keeps 7075 out of welded structure. It gets there by giving up copper. Copper is what lifts 7075 and [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":10700,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"7003 Aluminum Alloy: Properties, Tempers and Weldability","_seopress_titles_desc":"7003 aluminum is the weldable, extrudable 7xxx grade: Zn-Mg-Zr chemistry, EN 755-2 minimums, typical T5 and T6 data, filler choice, corrosion limits and sourcing notes.","_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-8804","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\/8804","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=8804"}],"version-history":[{"count":2,"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/posts\/8804\/revisions"}],"predecessor-version":[{"id":10706,"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/posts\/8804\/revisions\/10706"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/media\/10700"}],"wp:attachment":[{"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/media?parent=8804"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/categories?post=8804"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/tags?post=8804"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}