{"id":7463,"date":"2024-12-27T04:01:07","date_gmt":"2024-12-27T04:01:07","guid":{"rendered":"https:\/\/premiumalu.com\/aluminium-5083-h321-a-comprehensive-guide\/"},"modified":"2026-08-30T13:36:19","modified_gmt":"2026-08-30T13:36:19","slug":"hlinik-5083-h321-komplexni-pruvodce","status":"publish","type":"post","link":"https:\/\/premiumalu.com\/cs\/aluminium-5083-h321-a-comprehensive-guide\/","title":{"rendered":"Hlin\u00edk 5083-H321: Stav H321, vlastnosti a n\u00e1mo\u0159n\u00ed aplikace"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Co je 5083-H321 hlin\u00edk?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">H321 je temper mo\u0159sk\u00e9 konstruk\u010dn\u00ed desky slitiny 5083, netepeln\u011b zpracovateln\u00e9 slitiny Al-Mg postaven\u00e9 na 4,0\u20134,9 % ho\u0159\u010d\u00edku s manganem a chromem. Zpevn\u011bn\u00ed deformac\u00ed, nikoli precipita\u010dn\u00ed zpracov\u00e1n\u00ed, zaji\u0161\u0165uje pevnost, a slitina pat\u0159\u00ed mezi nejpevn\u011bj\u0161\u00ed a nejodoln\u011bj\u0161\u00ed v\u016f\u010di mo\u0159sk\u00e9 vod\u011b z b\u011b\u017en\u00fdch netepeln\u011b zpracovateln\u00fdch t\u0159\u00edd.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tato \u00farove\u0148 ho\u0159\u010d\u00edku tak\u00e9 \u010din\u00ed slitinu 5083 n\u00e1chylnou k senzibilizaci \u2014 precipitaci \u03b2-f\u00e1ze na hranic\u00edch zrn \u2014 p\u0159i dr\u017een\u00ed nad p\u0159ibli\u017en\u011b 65 \u00b0C, tak\u017ee pevnost a korozn\u00ed chov\u00e1n\u00ed z\u00e1vis\u00ed na p\u0159edepsan\u00e9m temperu. Pro trupy a pob\u0159e\u017en\u00ed konstrukce je n\u00e1mo\u0159n\u011b kvalifikovan\u00fd temper H321, nikoli univerz\u00e1ln\u00ed temper zpevn\u011bn\u00fd deformac\u00ed, verz\u00ed, kter\u00e1 nese p\u0159\u00edslu\u0161nou kvalifikaci.<\/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\/2024\/12\/5083-H321-Aluminum-Properties-Marine-Use-Temper-Guide-1.png\" alt=\"\" class=\"wp-image-10377\" srcset=\"https:\/\/premiumalu.com\/wp-content\/uploads\/2024\/12\/5083-H321-Aluminum-Properties-Marine-Use-Temper-Guide-1.png 800w, https:\/\/premiumalu.com\/wp-content\/uploads\/2024\/12\/5083-H321-Aluminum-Properties-Marine-Use-Temper-Guide-1-300x225.png 300w, https:\/\/premiumalu.com\/wp-content\/uploads\/2024\/12\/5083-H321-Aluminum-Properties-Marine-Use-Temper-Guide-1-768x576.png 768w, https:\/\/premiumalu.com\/wp-content\/uploads\/2024\/12\/5083-H321-Aluminum-Properties-Marine-Use-Temper-Guide-1-600x450.png 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Pochopen\u00ed temperu H321<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">H321 znamen\u00e1, \u017ee deska je zpevn\u011bna deformac\u00ed a pot\u00e9 stabilizov\u00e1na n\u00edzkoteplotn\u00edm zpracov\u00e1n\u00edm. Pro slitinu 5083 je H321 standardn\u00edm temperem mo\u0159sk\u00e9 konstruk\u010dn\u00ed desky: dosahuje p\u0159ibli\u017en\u011b pevnosti \u00farovn\u011b H32, ale je vyr\u00e1b\u011bn a testov\u00e1n pro provoz v mo\u0159sk\u00e9 vod\u011b, se zlep\u0161enou odolnost\u00ed proti exfoliaci a mezikrystalov\u00e9 korozi pod nap\u011bt\u00edm (SCC) a dobrou rozm\u011brovou stabilitou p\u0159i sva\u0159ov\u00e1n\u00ed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Krok stabilizace odli\u0161uje H321 od b\u011b\u017en\u00e9ho H32. Udr\u017euje vlastnosti zpevn\u011bn\u00e9 deformac\u00ed stabiln\u00ed, tak\u017ee deska nem\u011bkne p\u0159i pokojov\u00e9 teplot\u011b b\u011bhem \u017eivotnosti, a podporuje odolnost desky proti SCC v mo\u0159sk\u00e9m provozu a jej\u00ed rovinnost p\u0159i sva\u0159ov\u00e1n\u00ed a mont\u00e1\u017ei.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">H321 a H116 jsou dva n\u00e1mo\u0159n\u011b kvalifikovan\u00e9 tempery slitiny 5083 \u2014 oba proch\u00e1zej\u00ed testem mezikrystalov\u00e9 koroze ASTM G67 \u2014 zat\u00edmco H32 a H34 jsou univerz\u00e1ln\u00ed tempery zpevn\u011bn\u00e9 deformac\u00ed bez t\u00e9to n\u00e1mo\u0159n\u00ed korozn\u00ed kvalifikace. Tato kvalifikace, nikoli rozd\u00edl v pevnosti, je d\u016fvodem, pro\u010d lod\u011bnice specifikuj\u00ed H321 nebo H116 pro pono\u0159en\u00e9 desky trupu.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Jak se H321 li\u0161\u00ed od H32<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">H32 je zpevn\u011bn deformac\u00ed na p\u0159ibli\u017en\u011b 1\/4 tvrdosti a stabilizov\u00e1n, s m\u00edrn\u011b vy\u0161\u0161\u00ed typickou mez\u00ed kluzu (p\u0159ibli\u017en\u011b 235 MPa) ne\u017e H321 (p\u0159ibli\u017en\u011b 215\u2013228 MPa), ale H32 je univerz\u00e1ln\u00ed temper plechu, nikoli n\u00e1mo\u0159n\u011b kvalifikovan\u00fd. H321 ob\u011btuje mal\u00e9 mno\u017estv\u00ed pevnosti ve prosp\u011bch n\u00e1mo\u0159n\u00edho korozn\u00edho testov\u00e1n\u00ed a rovinnosti desky, kter\u00e9 pono\u0159en\u00e9 konstrukce trupu pot\u0159ebuj\u00ed. H321 nebo H116 se vol\u00ed, kdy\u017e je sou\u010d\u00e1st v trval\u00e9m kontaktu s mo\u0159skou vodou; H32 nebo H34 se pou\u017e\u00edv\u00e1 pro nepono\u0159en\u00e9 konstrukce, kde vy\u0161\u0161\u00ed pevnost vede specifikaci. Viz\u00a0<a href=\"https:\/\/premiumalu.com\/cs\/odborne-tipy-pro-vyber-hlinikoveho-plechu-5083\/\">pr\u016fvodce v\u00fdb\u011brem plechu 5083<\/a>\u00a0pro podrobnosti o tlou\u0161\u0165ce a temperu.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Mechanick\u00e9 vlastnosti 5083-H321<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Majetek<\/th><th>5083-H321 (typick\u00e9)<\/th><\/tr><\/thead><tbody><tr><td>Hustota<\/td><td>2,66 g\/cm\u00b3<\/td><\/tr><tr><td>Pevnost v tahu<\/td><td>317 MPa (46 ksi)<\/td><\/tr><tr><td>Mez kluzu (0,2 % offset)<\/td><td>228 MPa (33 ksi)<\/td><\/tr><tr><td>Ta\u017enost p\u0159i p\u0159etr\u017een\u00ed<\/td><td>12-16%<\/td><\/tr><tr><td>Modul pru\u017enosti<\/td><td>70 GPa (10,2\u00d710\u2076 ksi)<\/td><\/tr><tr><td>Mez \u00fanavy (5\u00d710\u2078 cykl\u016f)<\/td><td>160 MPa (23 ksi)<\/td><\/tr><tr><td>Pevnost ve smyku<\/td><td>190 MPa (28 ksi)<\/td><\/tr><tr><td>Tvrdost podle Brinella<\/td><td>85\u201389 HB<\/td><\/tr><tr><td>Tepeln\u00e1 vodivost<\/td><td>117 W\/m\u00b7K<\/td><\/tr><tr><td>Rozsah taven\u00ed<\/td><td>570\u2013640 \u00b0C<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Mez kluzu \u0159\u00edd\u00ed v\u011bt\u0161inu v\u00fdb\u011br\u016f 5083-H321. P\u0159i p\u0159ibli\u017en\u011b 215\u2013228 MPa je to n\u00e1mo\u0159n\u011b kvalifikovan\u00fd temper \u0159ady 5xxx s nejvy\u0161\u0161\u00ed mez\u00ed kluzu, tak\u017ee nese zat\u00ed\u017een\u00ed trupu a tlakov\u00fdch n\u00e1dob p\u0159i m\u00edrn\u00e9 hmotnosti \u2014 a minimum podle ASTM B209 (215 MPa) slou\u017e\u00ed jako konstruk\u010dn\u00ed spodn\u00ed hranice, p\u0159i\u010dem\u017e skute\u010dn\u00e1 \u0161ar\u017ee je potvrzena proti jej\u00edmu MTC.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Kde se 5083-H321 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\/2024\/12\/Where-5083-H321-Is-Used.png\" alt=\"\" class=\"wp-image-10378\" srcset=\"https:\/\/premiumalu.com\/wp-content\/uploads\/2024\/12\/Where-5083-H321-Is-Used.png 800w, https:\/\/premiumalu.com\/wp-content\/uploads\/2024\/12\/Where-5083-H321-Is-Used-300x225.png 300w, https:\/\/premiumalu.com\/wp-content\/uploads\/2024\/12\/Where-5083-H321-Is-Used-768x576.png 768w, https:\/\/premiumalu.com\/wp-content\/uploads\/2024\/12\/Where-5083-H321-Is-Used-600x450.png 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Stavba lod\u00ed a pob\u0159e\u017en\u00ed konstrukce<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">5083-H321 je v\u00fdchoz\u00ed deska pro trupy a n\u00e1stavby plavidel a pob\u0159e\u017en\u00edch platforem. Jej\u00ed kombinace pevnosti, odolnosti proti korozi v mo\u0159sk\u00e9 vod\u011b a odolnosti proti SCC z n\u00ed \u010din\u00ed standard pro desky trupu, paluby, p\u0159ep\u00e1\u017eky a konzoly v trval\u00e9m kontaktu s mo\u0159skou vodou, kde by nemo\u0159sk\u00fd temper p\u0159edstavoval riziko mezikrystalov\u00e9ho napaden\u00ed. Pro \u0161ir\u0161\u00ed v\u00fdb\u011br slitiny si prohl\u00e9dn\u011bte pr\u016fvodce v\u00fdb\u011brem slitin pro n\u00e1mo\u0159n\u00ed t\u0159\u00eddy.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Tlakov\u00e9 n\u00e1doby a kryogenn\u00ed provoz<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Slitina si zachov\u00e1v\u00e1 hou\u017eevnatost a\u017e do kryogenn\u00edch teplot, tak\u017ee H321 se pou\u017e\u00edv\u00e1 pro n\u00e1dr\u017ee LNG, kryogenn\u00ed tlakov\u00e9 n\u00e1doby a \u017eelezni\u010dn\u00ed nebo cisternov\u00e9 korby, kde z\u00e1le\u017e\u00ed na ta\u017enosti p\u0159i n\u00edzk\u00fdch teplot\u00e1ch. Jej\u00ed sva\u0159itelnost umo\u017e\u0148uje velk\u00fdm sva\u0159ovan\u00fdm konstrukc\u00edm udr\u017eet pevnost ve spoji, co\u017e je tak\u00e9 d\u016fvod, pro\u010d se objevuje v chemick\u00e9m a dopravn\u00edm za\u0159\u00edzen\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">V\u00fdb\u011br temperu 5083<\/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\/2024\/12\/How-H321-Differs-from-H32-H116.png\" alt=\"\" class=\"wp-image-10380\" srcset=\"https:\/\/premiumalu.com\/wp-content\/uploads\/2024\/12\/How-H321-Differs-from-H32-H116.png 800w, https:\/\/premiumalu.com\/wp-content\/uploads\/2024\/12\/How-H321-Differs-from-H32-H116-300x225.png 300w, https:\/\/premiumalu.com\/wp-content\/uploads\/2024\/12\/How-H321-Differs-from-H32-H116-768x576.png 768w, https:\/\/premiumalu.com\/wp-content\/uploads\/2024\/12\/How-H321-Differs-from-H32-H116-600x450.png 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Temperament<\/th><th>Zpracov\u00e1n\u00ed<\/th><th>Mez pevnosti v tahu (typick\u00e1)<\/th><th>Mez kluzu (typick\u00e1)<\/th><th>N\u00e1mo\u0159n\u011b kvalifikovan\u00fd<\/th><th>Nejlep\u0161\u00ed pro<\/th><\/tr><\/thead><tbody><tr><td>O<\/td><td>\u017d\u00edh\u00e1no, pln\u011b m\u011bkk\u00e9<\/td><td>275 MPa<\/td><td>125 MPa<\/td><td>Ne<\/td><td>Hlubok\u00e9 ta\u017een\u00ed, slo\u017eit\u00e9 ohyby<\/td><\/tr><tr><td>H116<\/td><td>Zpevn\u011bn deformac\u00ed, n\u00e1mo\u0159n\u011b testov\u00e1n<\/td><td>305 MPa<\/td><td>215 MPa<\/td><td>Ano (ASTM G67)<\/td><td>Pono\u0159en\u00e9 desky trupu<\/td><\/tr><tr><td>H321<\/td><td>Zpevn\u011bn deformac\u00ed + stabilizov\u00e1n<\/td><td>305\u2013317 MPa<\/td><td>215\u2013228 MPa<\/td><td>Ano (ASTM G67)<\/td><td>N\u00e1mo\u0159n\u00ed konstruk\u010dn\u00ed deska, rozm\u011brov\u00e1 stabilita<\/td><\/tr><tr><td>H32<\/td><td>1\/4 tvrd\u00fd + stabilizovan\u00fd<\/td><td>315 MPa<\/td><td>235 MPa<\/td><td>Ne<\/td><td>Nepono\u0159en\u00e9 konstrukce, vy\u0161\u0161\u00ed pevnost<\/td><\/tr><tr><td>H34<\/td><td>1\/2 tvrd\u00fd + stabilizovan\u00fd<\/td><td>340 MPa<\/td><td>270 MPa<\/td><td>Ne<\/td><td>Ploch\u00e9 tuh\u00e9 sou\u010d\u00e1sti, maxim\u00e1ln\u00ed pevnost<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Typick\u00e9 hodnoty dle katalogu Linsy \/ AA; potvr\u010fte proti MTC pro konkr\u00e9tn\u00ed \u0161ar\u017ei.<\/em><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Aplikace, kde H321 vyhovuje<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Sou\u010d\u00e1st je v nebo v bl\u00edzkosti trval\u00e9ho kontaktu s mo\u0159skou vodou (desky trupu, paluby, pob\u0159e\u017en\u00ed konstrukce) a vy\u017eaduje n\u00e1mo\u0159n\u00ed korozn\u00ed kvalifikaci plus rovinnost desky.<\/li>\n\n\n\n<li>Konstrukce je sva\u0159ovan\u00e1 a mus\u00ed udr\u017eet pevnost a rozm\u011brovou stabilitu ve spoji.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Kdy se hod\u00ed jin\u00e9 temperov\u00e1n\u00ed<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>H116 \u2014 stejn\u00e1 n\u00e1mo\u0159n\u00ed kvalifikace s m\u00edrn\u011b odli\u0161n\u00fdmi normami rovinnosti desky a dod\u00e1vek; obvykl\u00e1 alternativa pro pono\u0159en\u00e9 trupy.<\/li>\n\n\n\n<li>H32 \/ H34 \u2014 nepono\u0159en\u00e9 sou\u010d\u00e1sti, kde je vy\u017eadov\u00e1na vy\u0161\u0161\u00ed mez kluzu; H34 poskytuje nejvy\u0161\u0161\u00ed pevnost rodiny pro ploch\u00e9, tuh\u00e9 sou\u010d\u00e1sti.<\/li>\n\n\n\n<li>O \u2014 geometrie vy\u017eaduje hlubok\u00e9 ta\u017een\u00ed nebo t\u011bsn\u00e9 ohyby, p\u0159i kter\u00fdch by tempery zpevn\u011bn\u00e9 deformac\u00ed praskaly.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Processing and Fabrication of 5083-H321<\/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\/2024\/12\/Processing-and-Fabrication-of-5083-H321.png\" alt=\"\" class=\"wp-image-10379\" srcset=\"https:\/\/premiumalu.com\/wp-content\/uploads\/2024\/12\/Processing-and-Fabrication-of-5083-H321.png 800w, https:\/\/premiumalu.com\/wp-content\/uploads\/2024\/12\/Processing-and-Fabrication-of-5083-H321-300x225.png 300w, https:\/\/premiumalu.com\/wp-content\/uploads\/2024\/12\/Processing-and-Fabrication-of-5083-H321-768x576.png 768w, https:\/\/premiumalu.com\/wp-content\/uploads\/2024\/12\/Processing-and-Fabrication-of-5083-H321-600x450.png 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Machining 5083-H321 is only fair. The gummy, work-hardening structure tends to build up on the cutting edge (built-up edge \u2014 workpiece material that smears onto the tool and ruins finish), so sharp inserts, positive rake, and coolant are required, with moderate speeds and no dwell that lets the chip weld to the flute.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Welding is one of the alloy&#8217;s strengths. TIG and MIG both produce sound joints, with a 5xxx filler matched to the magnesium level (5183 or 5356) to avoid sensitization. The heat-affected zone (HAZ \u2014 the band beside the weld) does lose some strain hardening and reverts toward the annealed condition near the fusion line, but the drop is far milder than in a heat-treatable 6xxx-T6 joint: the weldment retains roughly 80\u201390% of base-plate strength.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Corrosion protection is largely built in, but two limits apply. Sustained service stays below about 65\u00b0C (150\u00b0F) to avoid \u03b2-phase sensitization that drives intergranular corrosion, and where H321 sits in continuous seawater, the marine qualification \u2014 not a plain H temper \u2014 is what the specification relies on. Contact with nobler metals such as stainless steel is isolated with seals or coatings to prevent galvanic attack.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Formability is good for a strain-hardened plate but not at the O level. Minimum bend radii are wider than annealed stock \u2014 roughly the same bend latitude as H32, larger than O \u2014 and the higher yield means more springback on formed features. Where the part is rolled or bent, the stabilized plate&#8217;s strength is accounted for in the press setup.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Advantages and Limitations of 5083-H321<\/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\/2024\/12\/Corrosion-Protection-and-Service-Limits.png\" alt=\"\" class=\"wp-image-10381\" srcset=\"https:\/\/premiumalu.com\/wp-content\/uploads\/2024\/12\/Corrosion-Protection-and-Service-Limits.png 800w, https:\/\/premiumalu.com\/wp-content\/uploads\/2024\/12\/Corrosion-Protection-and-Service-Limits-300x225.png 300w, https:\/\/premiumalu.com\/wp-content\/uploads\/2024\/12\/Corrosion-Protection-and-Service-Limits-768x576.png 768w, https:\/\/premiumalu.com\/wp-content\/uploads\/2024\/12\/Corrosion-Protection-and-Service-Limits-600x450.png 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Majetek<\/th><th>V\u00fdhoda<\/th><th>Omezen\u00ed<\/th><\/tr><\/thead><tbody><tr><td>Strength (non-heat-treatable)<\/td><td>Highest-yield marine-qualified 5xxx (215\u2013228 MPa)<\/td><td>Yield strength below 6xxx-T6 grades<\/td><\/tr><tr><td>Corrosion (seawater)<\/td><td>Excellent; marine-qualified vs SCC and exfoliation<\/td><td>Sensitizes above ~65\u00b0C sustained<\/td><\/tr><tr><td>Sva\u0159itelnost<\/td><td>Excellent; HAZ softening far milder than 6xxx-T6<\/td><td>HAZ loses strain hardening near the fusion line; joint at ~80\u201390% of base strength<\/td><\/tr><tr><td>Tvarovatelnost<\/td><td>Good for a strain-hardened plate<\/td><td>Wider radii than O; more springback<\/td><\/tr><tr><td>Cryogenic toughness<\/td><td>Retains toughness to LNG temperatures<\/td><td>\u2014<\/td><\/tr><tr><td>Obr\u00e1b\u011bn\u00ed<\/td><td>\u2014<\/td><td>Only fair; gummy chip, sharp tools required<\/td><\/tr><tr><td>Dostupnost<\/td><td>Stocked as marine plate, sheet, bar<\/td><td>Not a decorative anodizing alloy<\/td><\/tr><tr><td>N\u00e1klady<\/td><td>Competitive marine grade<\/td><td>Not a low-cost substitute for 5052<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Z\u00e1v\u011br<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">5083-H321 pairs the highest strength of the common non-heat-treatable alloys with seawater-grade corrosion resistance and good weldability \u2014 the standard choice for hulls, offshore structures, and cryogenic pressure vessels. Its limits are clear: sustained service stays below about 65\u00b0C to avoid sensitization, and it machines only fairly, so the right downstream support matters as much as the alloy itself. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">That trade is easy to manage when the supplier covers the marine 5083 range and the processing around it: Linsy Aluminum supplies 5083-H321 in plate, sheet, and bar, with both stock and custom dimensions at low minimum order quantities, and provides in-house CNC machining, TIG and MIG welding, laser cutting, and surface treatments such as anodizing and powder coating; every order ships with an MTC, SGS test reports are available on request at extra cost, and custom 5083 orders typically run on a 10\u201360 day lead time. For 5083-H321 in a specific form, temper, or machined condition, see Linsy&#8217;s\u00a0<a href=\"http:\/\/premiumalu.com\/cs\/produkt\/slitina-hliniku-5083\/\" data-type=\"link\" data-id=\"http:\/\/premiumalu.com\/product\/5083-aluminum-alloy\/\">5083 aluminum products<\/a>; drawings and specifications can be sent to Linsy for a grade-fit and lead-time check.<\/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\">What makes 5083-H321 suitable for marine use?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;It resists seawater corrosion and keeps toughness at low temperatures without going brittle. As a marine-qualified temper (tested to ASTM G67 for intergranular corrosion), H321 resists stress-corrosion cracking in continuous seawater \u2014 the reason it is the default for hull plating and offshore structures.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">How does 5083-H321 compare with H116 and H32?\u00a0<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">H321 and H116 are both marine-qualified 5083 plate tempers; H32 is a general-purpose strain-hardened temper without the marine corrosion test, with slightly higher typical yield (about 235 MPa vs 215\u2013228 MPa). H116 or H321 is selected for immersed seawater service; H32 or H34 is used for non-immersed structures where strength leads.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Can 5083-H321 be welded, and how?\u00a0<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Yes. H321 is welded with TIG or MIG using a 5xxx filler matched to the base magnesium level \u2014 typically 5183 or 5356. Because 5083 is non-heat-treatable, the heat-affected zone does not soften the way a 6061-T6 joint would, so welded strength stays close to the parent plate.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Does 5083-H321 anodize well?\u00a0<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">5083-H321 is not used for decorative appearance anodizing. Its high magnesium content anodizes to a gray, uneven finish rather than the bright decorative look of 6061, so most buyers paint or powder-coat H321 for color and abrasion resistance, and rely on the native oxide for corrosion protection.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">What temperature limit applies to 5083-H321 service?\u00a0<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Sustained service stays below about 65\u00b0C (150\u00b0F). Above that, the high magnesium content can precipitate \u03b2-phase at grain boundaries and trigger sensitization \u2014 intergranular corrosion and stress-corrosion cracking \u2014 so the service temperature is stated in the design.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">What lead time applies to custom 5083-H321 orders?\u00a0<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">For non-stock sizes and tempers, custom 5083 production typically runs 10\u201360 days depending on alloy, dimensions, and processing. Linsy ships an MTC with every order and can arrange SGS reports on request.<\/p>","protected":false},"excerpt":{"rendered":"<p>What Is 5083-H321 Aluminum? H321 is the marine structural plate temper of 5083, a non-heat-treatable Al-Mg alloy built around 4.0\u20134.9% magnesium with manganese and chromium. Strain hardening, not precipitation treatment, supplies the strength, and the alloy ranks among the strongest and most seawater-resistant of the common non-heat-treatable grades. That magnesium level also makes 5083 susceptible [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":10376,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"5083-H321 Aluminum: Properties, Uses & Comparison","_seopress_titles_desc":"5083-H321 is the strain-hardened 5083 plate temper \u2014 high strength and seawater corrosion resistance. See properties, uses, and how it compares with H116.","_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-7463","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\/7463","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\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/comments?post=7463"}],"version-history":[{"count":3,"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/posts\/7463\/revisions"}],"predecessor-version":[{"id":10393,"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/posts\/7463\/revisions\/10393"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/media\/10376"}],"wp:attachment":[{"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/media?parent=7463"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/categories?post=7463"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/premiumalu.com\/cs\/wp-json\/wp\/v2\/tags?post=7463"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}