{"id":8735,"date":"2025-05-21T14:31:05","date_gmt":"2025-05-21T14:31:05","guid":{"rendered":"https:\/\/premiumalu.com\/understanding-aluminum-5454-yield-strength-in-engineering\/"},"modified":"2026-07-27T12:39:22","modified_gmt":"2026-07-27T12:39:22","slug":"pochopeni-pevnosti-v-tahu-hliniku-5454-ve-strojirenstvi","status":"publish","type":"post","link":"https:\/\/premiumalu.com\/cs\/understanding-aluminum-5454-yield-strength-in-engineering\/","title":{"rendered":"Zkoum\u00e1n\u00ed hlin\u00edku 5454 v in\u017een\u00fdrstv\u00ed - Linsy Aluminum"},"content":{"rendered":"<h2>\u00davod<\/h2>\n<p><a href=\"https:\/\/premiumalu.com\/cs\/produkt\/5454-aluminum\/\">5454 hlin\u00edk<\/a> Slitina \u0159ady 5xxx je specificky klasifikov\u00e1na pro pou\u017eit\u00ed p\u0159i zv\u00fd\u0161en\u00fdch teplot\u00e1ch v mo\u0159sk\u00e9m a chemick\u00e9m prost\u0159ed\u00ed \u2014 jej\u00ed obsah ho\u0159\u010d\u00edku (2,4\u20133,0 %) je z\u00e1m\u011brn\u011b udr\u017eov\u00e1n pod hranic\u00ed 3 % pro n\u00e1chylnost k mezikrystalov\u00e9 korozi pod nap\u011bt\u00edm, tak\u017ee odol\u00e1v\u00e1 mezikrystalov\u00e9mu napaden\u00ed p\u0159i teplot\u00e1ch a\u017e do p\u0159ibli\u017en\u011b 150 \u00b0C, kde slitiny 5083 a 5456 za\u010d\u00ednaj\u00ed b\u00fdt n\u00e1chyln\u00e9. Tato p\u0159\u00edru\u010dka se zab\u00fdv\u00e1 t\u00edm, kam 5454 zapad\u00e1 ve srovn\u00e1n\u00ed se slitinami 5052, 5083 a 6061, co znamenaj\u00ed mo\u017enosti tepeln\u00e9ho zpracov\u00e1n\u00ed pro tlakov\u00e9 n\u00e1doby a jak rozhodnout, zda je spr\u00e1vnou volbou pro hork\u00e9 chemick\u00e9 nebo tepl\u00e9 mo\u0159sk\u00e9 aplikace.<\/p>\n<h2>Chemick\u00e9 slo\u017een\u00ed<\/h2>\n<ul>\n<li>Ho\u0159\u010d\u00edk: 2,4\u20133,0 %<\/li>\n<li>Mangan: 0,5\u20131,0 %<\/li>\n<li>\u017delezo: \u22640,4 %<\/li>\n<li>K\u0159em\u00edk: \u22640,25%<\/li>\n<li>M\u011b\u010f: \u22640,1 %<\/li>\n<li>Chrom: 0,05\u20130,2 %<\/li>\n<li>Zinek: \u22640,25%<\/li>\n<li>Titan: \u22640,2 %<\/li>\n<li>Zbytek: <a href=\"https:\/\/premiumalu.com\/cs\/produkt\/5454-aluminum\/\">Hlin\u00edk<\/a><\/li>\n<\/ul>\n<h2>Kl\u00ed\u010dov\u00e9 vlastnosti<\/h2>\n<h3>Pevnost a tepeln\u00e1 stabilita<\/h3>\n<p>Slitina 5454 nen\u00ed tepeln\u011b vytvrditeln\u00e1. Ve stavu H32 je pevnost v tahu p\u0159ibli\u017en\u011b 250\u2013305 MPa s mez\u00ed kluzu v rozsahu 180\u2013230 MPa. Ve stavu H34 dosahuje pevnost v tahu p\u0159ibli\u017en\u011b 270\u2013330 MPa. Definuj\u00edc\u00ed v\u00fdhodou slitiny 5454 oproti 5083 NEN\u00cd vy\u0161\u0161\u00ed pevnost p\u0159i pokojov\u00e9 teplot\u011b \u2014 je j\u00ed schopnost udr\u017eet tuto pevnost bez mezikrystalov\u00e9 koroze pod nap\u011bt\u00edm p\u0159i teplot\u00e1ch nad 65 \u00b0C, kde slitiny 5xxx s vysok\u00fdm obsahem Mg (5083 se 4,5 % Mg, 5456 s 5 % Mg) za\u010d\u00ednaj\u00ed b\u00fdt n\u00e1chyln\u00e9 k mezikrystalov\u00e9mu napaden\u00ed. Pro chemick\u00e9 procesy a hork\u00e9 mo\u0159sk\u00e9 aplikace \u010din\u00ed toto tepeln\u00e9 okno slitinu 5454 standardn\u00ed jakost\u00ed pro tlakov\u00e9 n\u00e1doby v rodin\u011b 5xxx.<\/p>\n<h3>Odolnost proti korozi<\/h3>\n<p>Slitina 5454 odol\u00e1v\u00e1 slan\u00e9 vod\u011b, mo\u0159sk\u00e9 atmosf\u00e9\u0159e, m\u00edrn\u00e9mu chemick\u00e9mu p\u016fsoben\u00ed a pr\u016fmyslov\u00fdm odpad\u016fm. M\u00edrn\u00e1 hladina Mg udr\u017euje silnou odolnost proti korozi a z\u00e1rove\u0148 z\u016fst\u00e1v\u00e1 pod hranic\u00ed n\u00e1chylnosti k SCC. Je jednou z m\u00e1la hlin\u00edkov\u00fdch slitin klasifikovan\u00fdch pro skladov\u00e1n\u00ed dusi\u010dnanu amonn\u00e9ho a n\u011bkter\u00fdch petrochemick\u00fdch produkt\u016f p\u0159i m\u00edrn\u00fdch teplot\u00e1ch.<\/p>\n<h3>Sva\u0159itelnost<\/h3>\n<p>Slitina 5454 se sva\u0159uje metodami GTAW (TIG) a GMAW (MIG) s p\u0159\u00eddavn\u00fdm materi\u00e1lem 5356 nebo 5554. P\u0159\u00eddavn\u00fd materi\u00e1l 5356 poskytuje vy\u0161\u0161\u00ed pevnost svaru, ale m\u00edrn\u011b sni\u017euje odolnost proti SCC ve svarov\u00e9 z\u00f3n\u011b p\u0159i zv\u00fd\u0161en\u00fdch teplot\u00e1ch; 5554 odpov\u00edd\u00e1 z\u00e1kladn\u00ed hladin\u011b Mg a zachov\u00e1v\u00e1 pln\u00e9 tepeln\u00e9 hodnocen\u00ed. Pro pr\u00e1ci podle p\u0159edpis\u016f pro tlakov\u00e9 n\u00e1doby je t\u0159eba volbu p\u0159\u00eddavn\u00e9ho materi\u00e1lu potvrdit podle konstruk\u010dn\u00ed teploty a po\u017eadavk\u016f p\u0159edpis\u016f.<\/p>\n<h3>Tvarovatelnost<\/h3>\n<p>Ve stavech O (\u017e\u00edh\u00e1no) a H32 se slitina 5454 dob\u0159e oh\u00fdb\u00e1, tv\u00e1\u0159\u00ed v\u00e1lcov\u00e1n\u00edm a lisuje. Rychlost zpev\u0148ov\u00e1n\u00ed za studena je m\u00edrn\u00e1 \u2014 vy\u0161\u0161\u00ed ne\u017e u 5052, ale ni\u017e\u0161\u00ed ne\u017e u 5083, co\u017e ji \u010din\u00ed praktickou pro tv\u00e1\u0159en\u00ed tlakov\u00fdch n\u00e1dob a v\u00fdrobu n\u00e1dr\u017e\u00ed bez mezistup\u0148\u016f \u017e\u00edh\u00e1n\u00ed.<\/p>\n<h2>Srovn\u00e1n\u00ed slitiny 5454 s jin\u00fdmi slitinami<\/h2>\n<h3>5454 vs. 5052<\/h3>\n<p>Slitina 5052 je z\u00e1kladn\u00ed n\u00edzkon\u00e1kladov\u00e1 hlin\u00edkov\u00e1 plechov\u00e1 slitina Al-Mg (2,2\u20132,8 % Mg) \u2014 pro v\u0161eobecn\u00e9 mo\u0159sk\u00e9 a plechov\u00e9 pr\u00e1ce. Slitina 5454 p\u0159id\u00e1v\u00e1 mangan (0,5\u20131,0 %) pro vy\u0161\u0161\u00ed pevnost p\u0159i srovnateln\u00fdch hladin\u00e1ch Mg a je specificky klasifikov\u00e1na pro provoz p\u0159i zv\u00fd\u0161en\u00fdch teplot\u00e1ch. Volba: 5052 pro standardn\u00ed plechov\u00e9 a v\u0161eobecn\u00e9 kryc\u00ed pr\u00e1ce; 5454 tam, kde bude d\u00edl vystaven teplu nebo agresivn\u00edmu chemick\u00e9mu p\u016fsoben\u00ed a je vy\u017eadov\u00e1no hodnocen\u00ed podle p\u0159edpis\u016f pro tlakov\u00e9 n\u00e1doby nebo n\u00e1dr\u017ee.<\/p>\n<h3>5454 vs. 5083<\/h3>\n<p>Slitina 5083 m\u00e1 vy\u0161\u0161\u00ed obsah Mg (4,0\u20134,9 %) a poskytuje vy\u0161\u0161\u00ed pevnost v tahu p\u0159i pokojov\u00e9 teplot\u011b (~305 MPa UTS ve stavu H116 vs. ~275 MPa u 5454-H32). Slitina 5083 se v\u0161ak NEDOPORU\u010cUJE pro teploty nad 65 \u00b0C z d\u016fvodu rizika SCC. Slitina 5454 je standardn\u00ed alternativou, kdy\u017e provozn\u00ed teplota p\u0159ekro\u010d\u00ed tuto hranici \u2014 chemick\u00e9 p\u0159epravn\u00ed n\u00e1dr\u017ee, n\u00e1doby pro tepl\u00e9 procesy a mo\u0159sk\u00e9 v\u00fdfukov\u00e9 komponenty jsou klasick\u00fdmi aplikacemi slitiny 5454.<\/p>\n<h3>5454 vs. 6061<\/h3>\n<p>Slitina 6061-T6 je tepeln\u011b vytvrditeln\u00e1, obrobiteln\u00e1 a pevn\u011bj\u0161\u00ed p\u0159i pokojov\u00e9 teplot\u011b \u2014 ale nen\u00ed standardn\u00ed jakost\u00ed pro tlakov\u00e9 n\u00e1doby nebo chemick\u00fd provoz. Hol\u00e1 slitina 6061 koroduje ve slan\u00e9 vod\u011b a mnoha chemik\u00e1li\u00edch. Slitina 5454 je p\u0159edpisov\u011b kvalifikovanou volbou z \u0159ady 5xxx pro sva\u0159ovan\u00e9 tlakov\u00e9 n\u00e1doby, chemick\u00e9 skladov\u00e1n\u00ed a mo\u0159sk\u00fd provoz p\u0159i zv\u00fd\u0161en\u00fdch teplot\u00e1ch, kde integrita proti korozi je d\u016fle\u017eit\u011bj\u0161\u00ed ne\u017e \u0161pi\u010dkov\u00e1 pevnost v tahu.<\/p>\n<h2>B\u011b\u017en\u00e9 stavy zpracov\u00e1n\u00ed<\/h2>\n<ul>\n<li><strong>O:<\/strong> \u017d\u00edh\u00e1no \u2014 maxim\u00e1ln\u00ed tv\u00e1\u0159itelnost. Pou\u017e\u00edv\u00e1 se, kdy\u017e bude d\u00edl tv\u00e1\u0159en a pot\u00e9 sva\u0159ov\u00e1n bez pot\u0159eby vysok\u00e9 pevnosti v dodan\u00e9m stavu.<\/li>\n<li><strong>H32:<\/strong> Zpevn\u011bno za studena a stabilizov\u00e1no na \u010dtvrt tvrd\u00fd stav. Nej\u010dast\u011bji specifikovan\u00fd stav pro tlakov\u00e9 n\u00e1doby a chemick\u00e9 n\u00e1dr\u017ee \u2014 vyva\u017euje pevnost a tv\u00e1\u0159itelnost.<\/li>\n<li><strong>H34:<\/strong> Polotvrd\u00fd stabilizovan\u00fd stav. Vy\u0161\u0161\u00ed pevnost tam, kde jsou po\u017eadavky na tv\u00e1\u0159en\u00ed m\u00e9n\u011b n\u00e1ro\u010dn\u00e9. Typick\u00e9 pro ploch\u00e9 a m\u00edrn\u011b tv\u00e1\u0159en\u00e9 komponenty tlakov\u00fdch n\u00e1dob.<\/li>\n<\/ul>\n<h2>Krit\u00e9ria pou\u017eit\u00ed \/ nepou\u017eit\u00ed<\/h2>\n<p>Pou\u017eijte tento rychl\u00fd p\u0159ehled k rozhodnut\u00ed, zda slitina 5454 vyhovuje va\u0161\u00ed aplikaci.<\/p>\n<p><strong>Pou\u017eijte \u2014 pou\u017eijte slitinu 5454, kdy\u017e:<\/strong><\/p>\n<ul>\n<li>Provozn\u00ed teplota je mezi 65 \u00b0C a 150 \u00b0C a prost\u0159ed\u00ed zahrnuje slanou vodu, chemik\u00e1lie nebo pr\u016fmyslov\u00e9 odpady \u2014 slitina 5454 je slitina \u0159ady 5xxx specificky navr\u017een\u00e1 tak, aby v tomto tepeln\u00e9m okn\u011b nepodl\u00e9hala mezikrystalov\u00e9 korozi pod nap\u011bt\u00edm. Typick\u00e9 aplikace: chemick\u00e9 p\u0159epravn\u00ed n\u00e1dr\u017ee, tlakov\u00e9 n\u00e1doby pro tepl\u00e9 procesy, mo\u0159sk\u00e9 v\u00fdfukov\u00e9 a chladic\u00ed syst\u00e9my.<\/li>\n<li>Aplikac\u00ed je sva\u0159ovan\u00e1 tlakov\u00e1 n\u00e1doba nebo skladovac\u00ed n\u00e1dr\u017e vy\u017eaduj\u00edc\u00ed p\u0159edpisovou kvalifikaci \u2014 slitina 5454 je uzn\u00e1v\u00e1na v p\u0159edpisech ASME pro tlakov\u00e9 n\u00e1doby pro hlin\u00edkov\u00e9 konstrukce p\u0159i m\u00edrn\u00fdch teplot\u00e1ch. Typick\u00e9 aplikace: skladov\u00e1n\u00ed dusi\u010dnanu amonn\u00e9ho, petrochemick\u00e9 procesn\u00ed n\u00e1doby, t\u011bla silni\u010dn\u00edch cisteren.<\/li>\n<li>Odolnost proti korozi plus sva\u0159itelnost plus tepeln\u00e1 stabilita jsou v\u0161echny po\u017eadov\u00e1ny v jedn\u00e9 slitin\u011b \u2014 slitina 5454 pokr\u00fdv\u00e1 pr\u016fnik, kter\u00fd slitiny 5083 (riziko SCC nad 65 \u00b0C), 6061 (koroze v chemik\u00e1li\u00edch) a nerezov\u00e1 ocel 304 (hmotnostn\u00ed penalizace) ka\u017ed\u00e1 jednotliv\u011b nespl\u0148uj\u00ed.<\/li>\n<\/ul>\n<p><strong>Nepou\u017e\u00edvejte \u2014 nepou\u017e\u00edvejte slitinu 5454, kdy\u017e:<\/strong><\/p>\n<ul>\n<li>Prim\u00e1rn\u00edm po\u017eadavkem je pevnost v tahu p\u0159i pokojov\u00e9 teplot\u011b nad 330 MPa \u2014 slitina 5083-H116 poskytuje vy\u0161\u0161\u00ed pevnost p\u0159i pokojov\u00e9 teplot\u011b; 6061-T6 nebo 7075-T6 jsou je\u0161t\u011b pevn\u011bj\u0161\u00ed, pokud jsou tepeln\u011b vytvrditeln\u00e9 slitiny p\u0159ijateln\u00e9.<\/li>\n<li>Provozn\u00ed teplota trvale p\u0159esahuje 150 \u00b0C \u2014 hlin\u00edk ztr\u00e1c\u00ed pevnost rychle nad p\u0159ibli\u017en\u011b 200 \u00b0C bez ohledu na slitinu; nerezov\u00e1 ocel nebo niklov\u00e9 slitiny se st\u00e1vaj\u00ed standardn\u00ed volbou materi\u00e1lu.<\/li>\n<li>Kvalita eloxov\u00e1n\u00ed je kosmetick\u00fdm nebo specifika\u010dn\u00edm po\u017eadavkem \u2014 jako v\u0161echny slitiny \u0159ady 5xxx vytv\u00e1\u0159\u00ed slitina 5454 m\u00e9n\u011b rovnom\u011brn\u00fd eloxovan\u00fd povrch ne\u017e jakosti \u0159ady 6xxx.<\/li>\n<li>Vysoceobjemov\u00e9 CNC obr\u00e1b\u011bn\u00ed je prim\u00e1rn\u00ed v\u00fdrobn\u00ed metodou \u2014 slitiny \u0159ady 5xxx jsou v\u00edce \u201emazlav\u00e9\" ne\u017e \u0159ada 6xxx; 6061-T6 nebo 7075-T6 jsou standardn\u00ed obr\u00e1b\u011bc\u00ed hlin\u00edkov\u00e9 jakosti.<\/li>\n<\/ul>\n<h2>Aplikace<\/h2>\n<p>Krit\u00e9ria Pou\u017eijte\/Nepou\u017e\u00edvejte v\u00fd\u0161e pokr\u00fdvaj\u00ed logiku v\u00fdb\u011bru. N\u00ed\u017ee uveden\u00fd seznam mapuje konkr\u00e9tn\u00ed syst\u00e9my, kde je slitina 5454 standardn\u00ed prax\u00ed:<\/p>\n<ul>\n<li>Chemick\u00e9 zpracov\u00e1n\u00ed \u2014 skladovac\u00ed n\u00e1dr\u017ee, p\u0159epravn\u00ed n\u00e1doby, potrub\u00ed pro dusi\u010dnan amonn\u00fd a petrochemick\u00fd provoz<\/li>\n<li>Mo\u0159sk\u00e9 aplikace \u2014 komponenty v\u00fdfukov\u00fdch syst\u00e9m\u016f, potrub\u00ed chladic\u00ed vody, n\u00e1dr\u017ee pro tepl\u00e9 procesy<\/li>\n<li>Tlakov\u00e9 n\u00e1doby \u2014 sva\u0159ovan\u00e9 hlin\u00edkov\u00e9 n\u00e1doby podle p\u0159edpis\u016f ASME pro provoz p\u0159i m\u00edrn\u00fdch teplot\u00e1ch<\/li>\n<li>Doprava \u2014 t\u011bla silni\u010dn\u00edch cisteren, \u017eelezni\u010dn\u00ed cisternov\u00e9 vozy pro chemickou a palivovou p\u0159epravu<\/li>\n<li>Pr\u016fmysl \u2014 pl\u00e1\u0161t\u011b v\u00fdm\u011bn\u00edk\u016f tepla, procesn\u00ed potrub\u00ed, komponenty pra\u010dek<\/li>\n<\/ul>\n<h2>Z\u00e1v\u011br<\/h2>\n<p>Slitina 5454 nen\u00ed nejpevn\u011bj\u0161\u00ed slitinou \u0159ady 5xxx \u2014 slitiny 5083 i 5456 poskytuj\u00ed vy\u0161\u0161\u00ed pevnost v tahu p\u0159i pokojov\u00e9 teplot\u011b. Co slitina 5454 m\u00edsto toho nab\u00edz\u00ed, je pracovn\u00ed teplotn\u00ed okno mezi 65 \u00b0C a 150 \u00b0C, kde se slitiny 5xxx s vysok\u00fdm obsahem Mg st\u00e1vaj\u00ed nespolehliv\u00fdmi. Pro chemickou p\u0159epravu, n\u00e1doby pro tepl\u00e9 procesy a hork\u00fd mo\u0159sk\u00fd provoz je tato tepeln\u00e1 stabilita d\u016fvodem, pro\u010d se slitina 5454 objevuje v p\u0159edpisech pro tlakov\u00e9 n\u00e1doby tam, kde slitina 5083 nikoli. Kompromisem je m\u00edrn\u00e1 pevnost a cenov\u00e1 p\u0159ir\u00e1\u017eka za u\u017e\u0161\u00ed dostupnost specializovan\u00e9 jakosti s \u0159\u00edzen\u00fdm stavem zpracov\u00e1n\u00ed.<\/p>\n<p>Spole\u010dnost Linsy Aluminum skladuje slitinu 5454 ve form\u011b desek, plech\u016f a na zak\u00e1zku \u0159ezan\u00fdch rozm\u011br\u016f, s mo\u017enost\u00ed v\u00fdroby s n\u00edzk\u00fdm minim\u00e1ln\u00edm mno\u017estv\u00edm objedn\u00e1vky pro nestandardn\u00ed specifikace. Pln\u00e1 dokumentace MTC, certifikace chemick\u00e9ho slo\u017een\u00ed a zpr\u00e1vy o mechanick\u00fdch zkou\u0161k\u00e1ch SGS jsou k dispozici pro ka\u017edou objedn\u00e1vku. Pokud projekt zahrnuje specifick\u00fd stav zpracov\u00e1n\u00ed, p\u0159edpisovou kvalifikaci nebo po\u017eadavek na chemick\u00fd provoz, za\u0161lete specifikaci k technick\u00e9mu posouzen\u00ed.<\/p>\n<h2>\u010casto kladen\u00e9 ot\u00e1zky<\/h2>\n<h3>Co \u010din\u00ed slitinu 5454 vhodnou pro provoz p\u0159i zv\u00fd\u0161en\u00fdch teplot\u00e1ch?<\/h3>\n<p>Obsah ho\u0159\u010d\u00edku je z\u00e1m\u011brn\u011b udr\u017eov\u00e1n pod 3 % (rozsah: 2,4\u20133,0 %). Nad p\u0159ibli\u017en\u011b 3 % Mg se slitiny \u0159ady 5xxx st\u00e1vaj\u00ed n\u00e1chyln\u00fdmi k mezikrystalov\u00e9 korozi pod nap\u011bt\u00edm p\u0159i teplot\u00e1ch nad 65 \u00b0C, proto\u017ee se na hranic\u00edch zrn vylu\u010duje f\u00e1ze bohat\u00e1 na Mg (beta-f\u00e1ze). Omezen\u00edm obsahu Mg na 3 % slitina 5454 minimalizuje toto vylu\u010dov\u00e1n\u00ed \u2014 co\u017e ji \u010din\u00ed pou\u017eitelnou a\u017e do p\u0159ibli\u017en\u011b 150 \u00b0C p\u0159i zachov\u00e1n\u00ed odolnosti proti korozi.<\/p>\n<h3>Lze slitinu 5454 sva\u0159ovat?<\/h3>\n<p>Ano \u2014 GTAW (TIG) a GMAW (MIG) s p\u0159\u00eddavn\u00fdm materi\u00e1lem 5356 nebo 5554 jsou standardem. P\u0159\u00eddavn\u00fd materi\u00e1l 5356 poskytuje vy\u0161\u0161\u00ed pevnost ve svarov\u00e9m stavu, ale m\u00edrn\u011b sni\u017euje odolnost proti SCC p\u0159i zv\u00fd\u0161en\u00fdch teplot\u00e1ch ve svarov\u00e9 z\u00f3n\u011b. P\u0159\u00eddavn\u00fd materi\u00e1l 5554 odpov\u00edd\u00e1 ni\u017e\u0161\u00edmu obsahu Mg a zachov\u00e1v\u00e1 pln\u00e9 tepeln\u00e9 hodnocen\u00ed. Pro p\u0159edpisov\u011b kvalifikovanou pr\u00e1ci na tlakov\u00fdch n\u00e1dob\u00e1ch potvr\u010fte specifikaci p\u0159\u00eddavn\u00e9ho materi\u00e1lu podle konstruk\u010dn\u00ed teploty.<\/p>\n<h3>Jak si stoj\u00ed slitina 5454 ve srovn\u00e1n\u00ed se slitinou 5083 v aplikac\u00edch tlakov\u00fdch n\u00e1dob?<\/h3>\n<p>Slitina 5083 je pevn\u011bj\u0161\u00ed p\u0159i pokojov\u00e9 teplot\u011b (~305 MPa UTS vs. ~275 MPa u 5454) a je standardn\u00ed jakost\u00ed pro stavbu lod\u00ed. Slitina 5083 se v\u0161ak nedoporu\u010duje pro teploty nad 65 \u00b0C z d\u016fvodu rizika SCC, zat\u00edmco slitina 5454 si zachov\u00e1v\u00e1 sv\u00e9 p\u0159edpisov\u00e9 hodnocen\u00ed pro tlakov\u00e9 n\u00e1doby a\u017e do ~150 \u00b0C. Volba z\u00e1vis\u00ed na tom, zda konstruk\u010dn\u00ed teplota p\u0159ekra\u010duje hranici 65 \u00b0C \u2014 pokud ano, slitina 5454 je specifikovanou slitinou \u0159ady 5xxx.<\/p>\n<h3>Jak\u00fd je hlavn\u00ed rozd\u00edl mezi stavy 5454-H32 a H34?<\/h3>\n<p>Stav H32 je \u010dtvrt tvrd\u00fd a stabilizovan\u00fd \u2014 m\u00edrn\u011b m\u011bk\u010d\u00ed a l\u00e9pe tv\u00e1\u0159iteln\u00fd, standardn\u00ed volba pro sva\u0159ovan\u00e9 tlakov\u00e9 n\u00e1doby, kde je tv\u00e1\u0159en\u00ed sou\u010d\u00e1st\u00ed v\u00fdroby. Stav H34 je polotvrd\u00fd \u2014 vy\u0161\u0161\u00ed pevnost s pon\u011bkud ni\u017e\u0161\u00ed tv\u00e1\u0159itelnost\u00ed, pou\u017e\u00edvan\u00fd pro plo\u0161\u0161\u00ed komponenty s m\u00e9n\u011b n\u00e1ro\u010dn\u00fdmi po\u017eadavky na tv\u00e1\u0159en\u00ed. Oba stavy jsou stabilizov\u00e1ny pro zaji\u0161t\u011bn\u00ed vlastnost\u00ed zpevn\u011bn\u00fdch za studena.<\/p>\n<h3>Jak\u00fd p\u0159\u00eddavn\u00fd materi\u00e1l by m\u011bl b\u00fdt pou\u017eit pro sva\u0159ov\u00e1n\u00ed slitiny 5454?<\/h3>\n<p>P\u0159\u00eddavn\u00fd materi\u00e1l 5356 (Al-5 % Mg) je nejb\u011b\u017en\u011bj\u0161\u00ed volbou a poskytuje vy\u0161\u0161\u00ed pevnost ve svarov\u00e9m stavu. P\u0159\u00eddavn\u00fd materi\u00e1l 5554 (Al-2,7 % Mg) odpov\u00edd\u00e1 t\u011bsn\u011bji z\u00e1kladn\u00ed hladin\u011b Mg a zachov\u00e1v\u00e1 plnou odolnost proti korozi p\u0159i zv\u00fd\u0161en\u00fdch teplot\u00e1ch. Volba z\u00e1vis\u00ed na tom, zda m\u00e1 v provozn\u00edch podm\u00ednk\u00e1ch vy\u0161\u0161\u00ed prioritu pevnost nebo tepeln\u00e1 odolnost proti SCC. Pro pr\u00e1ci podle p\u0159edpis\u016f potvr\u010fte p\u0159\u00eddavn\u00fd materi\u00e1l se specifikac\u00ed postupu sva\u0159ov\u00e1n\u00ed.<\/p>","protected":false},"excerpt":{"rendered":"<p>Introduction 5454 aluminum is the 5xxx alloy specifically rated for elevated-temperature marine and chemical service \u2014 its magnesium content (2.4\u20133.0%) stays deliberately below the 3% stress-corrosion-cracking threshold, so it resists intergranular attack at temperatures up to about 150\u00b0C, where 5083 and 5456 become susceptible. This guide covers where 5454 fits against 5052, 5083, and 6061, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":8729,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"5454 Aluminum Alloy Guide: Thermal Stability, Pressure Vessel Spec, and Comparisons (vs 5083, 5052, 6061)","_seopress_titles_desc":"Engineering guide to 5454 aluminum \u2014 elevated-temperature SCC resistance, H32\/H34\/O temper properties, and comparisons with 5083, 5052, and 6061. Includes Go\/No-Go limits for pressure vessels, chemical tanks, and warm-marine applications.","_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":[177],"tags":[],"class_list":["post-8735","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-5000_6000-series-aluminum"],"_links":{"self":[{"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/posts\/8735","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=8735"}],"version-history":[{"count":2,"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/posts\/8735\/revisions"}],"predecessor-version":[{"id":10222,"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/posts\/8735\/revisions\/10222"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/media\/8729"}],"wp:attachment":[{"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/media?parent=8735"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/categories?post=8735"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/tags?post=8735"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}