{"id":3877,"date":"2024-06-26T13:55:20","date_gmt":"2024-06-26T13:55:20","guid":{"rendered":"https:\/\/machining-quote.com\/?p=3877"},"modified":"2024-06-27T10:13:50","modified_gmt":"2024-06-27T10:13:50","slug":"303-and-304-stainless-steel","status":"publish","type":"post","link":"https:\/\/machining-quote.com\/cs\/bolg\/303-and-304-stainless-steel\/","title":{"rendered":"10 kl\u00ed\u010dov\u00fdch rozd\u00edl\u016f mezi nerezovou ocel\u00ed 303 a 304"},"content":{"rendered":"

Na Nab\u00eddka obr\u00e1b\u011bn\u00ed<\/a>, we often encounter a range of materials in our manufacturing processes that each offer unique properties and challenges. Two such materials are stainless steel grades 303 and 304, which are commonly used in the industry but serve different purposes due to their distinct characteristics. In this blog post, we’ll explore the key differences between stainless steel 303 and 304, providing insights that can help you, as a professional in the manufacturing or mechanical design field, make informed decisions about the most suitable material for your projects.<\/p>\n\n\n\n

\u00davod<\/h2>\n\n\n\n

Nerezov\u00e1 ocel je v\u00fdjime\u010dn\u011b v\u0161estrann\u00fd materi\u00e1l \u0161iroce pou\u017e\u00edvan\u00fd v r\u016fzn\u00fdch pr\u016fmyslov\u00fdch odv\u011btv\u00edch d\u00edky sv\u00e9 pevnosti, odolnosti proti korozi a estetick\u00e9mu vzhledu. Obzvl\u00e1\u0161t\u011b t\u0159\u00eddy 303 a 304 jsou obl\u00edben\u00e9 pro svou rovnov\u00e1hu mezi zpracovatelnost\u00ed a trvanlivost\u00ed. Pochopen\u00ed jemn\u00fdch rozd\u00edl\u016f mezi t\u011bmito dv\u011bma t\u0159\u00eddami m\u016f\u017ee v\u00fdrazn\u011b ovlivnit v\u00fdkon a \u017eivotnost va\u0161ich projekt\u016f. Tento \u010dl\u00e1nek rozebere tyto rozd\u00edly jasn\u00fdm a podrobn\u00fdm zp\u016fsobem, aby v\u00e1s vedl p\u0159i procesu v\u00fdb\u011bru materi\u00e1lu.<\/p>\n\n\n\n

Kontextov\u00fd p\u0159ehled nerezov\u00e9 oceli 303 a 304<\/strong><\/h3>\n\n\n\n

Nerezov\u00e9 oceli 303 i 304 jsou sou\u010d\u00e1st\u00ed v\u011bt\u0161\u00ed rodiny austenitick\u00fdch nerezov\u00fdch ocel\u00ed \u0159ady 300, kter\u00e9 jsou prim\u00e1rn\u011b legov\u00e1ny chromem a niklem. Jemn\u00e9 rozd\u00edly v jejich slo\u017een\u00ed a vlastnostech je v\u0161ak \u010din\u00ed vhodn\u00fdmi pro r\u016fzn\u00e9 aplikace.<\/p>\n\n\n\n

Rozd\u00edly ve slo\u017een\u00ed<\/strong><\/h2>\n\n\n\n

Chemick\u00e9 slo\u017een\u00ed<\/strong><\/h3>\n\n\n\n

Nerezov\u00e1 ocel 303 obsahuje p\u0159idanou s\u00edru, kter\u00e1 zlep\u0161uje jej\u00ed obrobitelnost, ale m\u00edrn\u011b sni\u017euje jej\u00ed odolnost proti korozi ve srovn\u00e1n\u00ed s 304. Zde je rozpis prim\u00e1rn\u00edch chemick\u00fdch prvk\u016f v ka\u017ed\u00e9 z nich:<\/p>\n\n\n\n

    \n
  • Nerezov\u00e1 ocel 303<\/strong>: Obvykle obsahuje p\u0159ibli\u017en\u011b 17-19% chr\u00f3mu, 8-10% niklu a vy\u0161\u0161\u00ed obsah s\u00edry, p\u0159ibli\u017en\u011b 0,15% nebo v\u00edce.<\/li>\n\n\n\n
  • 304 Nerezov\u00e1 ocel<\/strong>: Tato t\u0159\u00edda obsahuje chrom 18-20% a nikl 8-12% s velmi n\u00edzk\u00fdm obsahem s\u00edry, obvykle m\u00e9n\u011b ne\u017e 0,03%.<\/li>\n<\/ul>\n\n\n\n

    Tabulka chemick\u00fdch rozd\u00edl\u016f<\/strong><\/h3>\n\n\n\n
    Prvek<\/th>Nerezov\u00e1 ocel 303<\/th>304 Nerezov\u00e1 ocel<\/th><\/tr><\/thead>
    Chrom<\/td>17-19%<\/td>18-20%<\/td><\/tr>
    Nikl<\/td>8-10%<\/td>8-12%<\/td><\/tr>
    S\u00edra<\/td>0.15%<\/td><0,03%<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

    Odolnost proti korozi<\/strong><\/h2>\n\n\n\n

    Vliv chemick\u00e9ho slo\u017een\u00ed<\/strong><\/h3>\n\n\n\n

    Ni\u017e\u0161\u00ed obsah s\u00edry z nerezov\u00e9 oceli 304 ji \u010din\u00ed odoln\u011bj\u0161\u00ed v\u016f\u010di korozi, zejm\u00e9na oxidaci, kter\u00e1 je kl\u00ed\u010dov\u00e1 v prost\u0159ed\u00edch vystaven\u00fdch kyselin\u00e1m nebo tam, kde je prioritou sanitace.<\/p>\n\n\n\n

    Praktick\u00e9 implikace v pr\u016fmyslov\u00e9m pou\u017eit\u00ed<\/strong><\/h3>\n\n\n\n

    Pro prost\u0159ed\u00ed, jako je zpracov\u00e1n\u00ed potravin nebo n\u00e1mo\u0159n\u00ed aplikace, je typ 304 obvykle preferov\u00e1n kv\u016fli jeho zv\u00fd\u0161en\u00e9 odolnosti proti korozi. Na druhou stranu je obrobitelnost 303 ide\u00e1ln\u00ed pro projekty vy\u017eaduj\u00edc\u00ed rozs\u00e1hl\u00e9 obr\u00e1b\u011bn\u00ed.<\/p>\n\n\n\n

    Obrobitelnost<\/strong><\/h2>\n\n\n\n

    Role s\u00edry<\/strong><\/h3>\n\n\n\n

    P\u0159\u00eddavek s\u00edry v 303 p\u016fsob\u00ed jako mazivo, kter\u00e9 sni\u017euje odpor \u0159ezn\u00fdch n\u00e1stroj\u016f a zvy\u0161uje rychlost, kterou lze prov\u00e1d\u011bt obr\u00e1b\u011bn\u00ed bez po\u0161kozen\u00ed oceli.<\/p>\n\n\n\n

    \u00davahy pro projekty obr\u00e1b\u011bn\u00ed<\/strong><\/h3>\n\n\n\n

    Pro projekty vy\u017eaduj\u00edc\u00ed vysokorychlostn\u00ed obr\u00e1b\u011bn\u00ed je 303 nejlep\u0161\u00ed volbou. D\u00edky tomu je obzvl\u00e1\u0161t\u011b popul\u00e1rn\u00ed p\u0159i vytv\u00e1\u0159en\u00ed armatur, \u0161roub\u016f a dal\u0161\u00edch sou\u010d\u00e1st\u00ed, kde je kritick\u00e1 p\u0159esnost a rychlost v\u00fdroby.<\/p>\n\n\n\n

    Cena a dostupnost<\/strong><\/h2>\n\n\n\n

    Tr\u017en\u00ed faktory ovliv\u0148uj\u00edc\u00ed cenu<\/strong><\/h3>\n\n\n\n

    Zat\u00edmco ob\u011b t\u0159\u00eddy jsou obecn\u011b \u0161iroce dostupn\u00e9, 303 m\u00e1 tendenci b\u00fdt o n\u011bco dra\u017e\u0161\u00ed kv\u016fli sv\u00fdm specializovan\u00fdm obr\u00e1b\u011bc\u00edm vlastnostem.<\/p>\n\n\n\n

    Rozpo\u010dtov\u00e1n\u00ed materi\u00e1lov\u00fdch n\u00e1klad\u016f<\/strong><\/h3>\n\n\n\n

    P\u0159i pl\u00e1nov\u00e1n\u00ed projektu je d\u016fle\u017eit\u00e9 vz\u00edt v \u00favahu dlouhodob\u00e9 v\u00fdhody pou\u017eit\u00ed jakosti odoln\u011bj\u0161\u00ed proti korozi oproti kr\u00e1tkodob\u00fdm \u00faspor\u00e1m, kter\u00fdch by bylo mo\u017en\u00e9 dos\u00e1hnout s obrobiteln\u011bj\u0161\u00ed jakost\u00ed.<\/p>\n\n\n\n

    Sva\u0159itelnost<\/strong><\/h2>\n\n\n\n

    V\u00fdzvy se sva\u0159ov\u00e1n\u00edm 303<\/strong><\/h3>\n\n\n\n

    S\u00edra, kter\u00e1 zlep\u0161uje obrobitelnost 303, tak\u00e9 p\u0159edstavuje probl\u00e9my pro sva\u0159ov\u00e1n\u00ed, co\u017e vede k prask\u00e1n\u00ed za tepla. Proto je 304 \u010dasto preferovanou volbou pro aplikace vy\u017eaduj\u00edc\u00ed sva\u0159ov\u00e1n\u00ed.<\/p>\n\n\n\n

    Sva\u0159ovac\u00ed techniky pro 304<\/strong><\/h3>\n\n\n\n

    304 lze sva\u0159ovat pomoc\u00ed v\u011bt\u0161iny b\u011b\u017en\u00fdch technik, v\u010detn\u011b TIG, MIG a odporov\u00e9ho sva\u0159ov\u00e1n\u00ed, bez pot\u0159eby p\u0159edsva\u0159ovac\u00edch p\u0159\u00edprav.<\/p>\n\n\n\n

    Tvarovatelnost<\/strong><\/h2>\n\n\n\n

    Porovn\u00e1n\u00ed tvarovatelnosti<\/strong><\/h3>\n\n\n\n

    304 je obecn\u011b ta\u017en\u011bj\u0161\u00ed ne\u017e 303, co\u017e umo\u017e\u0148uje jeho tvarov\u00e1n\u00ed do slo\u017eit\u011bj\u0161\u00edch tvar\u016f bez prask\u00e1n\u00ed.<\/p>\n\n\n\n

    Aplikace vy\u017eaduj\u00edc\u00ed vysokou tvarovatelnost<\/strong><\/h3>\n\n\n\n

    V aplikac\u00edch, kde je kl\u00ed\u010dov\u00e9 tvarov\u00e1n\u00ed kov\u016f, jako jsou zak\u00e1zkov\u00e9 sk\u0159\u00edn\u011b nebo kuchy\u0148sk\u00e9 vybaven\u00ed, bude vynikaj\u00edc\u00ed tvarovatelnost 304 p\u0159\u00ednosem.<\/p>\n\n\n\n

    Pr\u016fmyslov\u00e9 aplikace<\/strong><\/h2>\n\n\n\n

    Optim\u00e1ln\u00ed pou\u017eit\u00ed pro 303 a 304<\/strong><\/h3>\n\n\n\n
      \n
    • 303 Aplikace<\/strong>: Nejvhodn\u011bj\u0161\u00ed pro d\u00edly vy\u017eaduj\u00edc\u00ed vysokorychlostn\u00ed obr\u00e1b\u011bn\u00ed, jako jsou matice, \u0161rouby a spojovac\u00ed prvky.<\/li>\n\n\n\n
    • 304 Aplikace<\/strong>: Ide\u00e1ln\u00ed pro pou\u017eit\u00ed v aplikac\u00edch, kde je vy\u017eadov\u00e1na vynikaj\u00edc\u00ed odolnost proti korozi, jako jsou kuchy\u0148sk\u00e9 spot\u0159ebi\u010de, n\u00e1doby na chemik\u00e1lie a mo\u0159sk\u00e9 prost\u0159ed\u00ed.<\/li>\n<\/ul>\n\n\n\n

      Tepeln\u00e1 odolnost<\/strong><\/h2>\n\n\n\n

      Teplotn\u00ed prahy<\/strong><\/h3>\n\n\n\n

      Nerezov\u00e1 ocel 304 odol\u00e1 vy\u0161\u0161\u00edm teplot\u00e1m ne\u017e ocel 303 a zachov\u00e1v\u00e1 si svou struktur\u00e1ln\u00ed integritu v extr\u00e9mn\u011bj\u0161\u00edch podm\u00ednk\u00e1ch.<\/p>\n\n\n\n

      Tepeln\u00e9 aplikace<\/strong><\/h3>\n\n\n\n

      Pro projekty zahrnuj\u00edc\u00ed vysok\u00e9 teploty, jako jsou v\u00fdm\u011bn\u00edky tepla nebo v\u00fdfukov\u00e9 syst\u00e9my, je 304 v\u00fdhodn\u011bj\u0161\u00ed volbou.<\/p>\n\n\n\n

      Pevnost a odolnost<\/strong><\/h2>\n\n\n\n

      Srovn\u00e1vac\u00ed s\u00edla<\/strong><\/h3>\n\n\n\n

      Oba druhy jsou zn\u00e1m\u00e9 svou odolnost\u00ed, ale ni\u017e\u0161\u00ed obsah s\u00edry 304 obecn\u011b d\u00e1v\u00e1 m\u00edrn\u00fd n\u00e1skok, pokud jde o celkovou pevnost a odolnost.<\/p>\n\n\n\n

      Mechanick\u00e9 vlastnosti<\/strong><\/h3>\n\n\n\n
      Majetek<\/th>Nerezov\u00e1 ocel 303<\/th>304 Nerezov\u00e1 ocel<\/th><\/tr><\/thead>
      Pevnost v tahu (MPa)<\/td>620<\/td>620-650<\/td><\/tr>
      Mez kluzu (MPa)<\/td>240<\/td>290<\/td><\/tr>
      Prodlou\u017een\u00ed (%)<\/td>30<\/td>40<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

      Magnetick\u00e9 vlastnosti<\/strong><\/h2>\n\n\n\n

      Magnetismus v austenitick\u00fdch ocel\u00edch<\/strong><\/h3>\n\n\n\n

      Ani 303 ani 304 nejsou siln\u011b magnetick\u00e9 kv\u016fli jejich austenitick\u00e9 struktu\u0159e. Opracov\u00e1n\u00ed za studena nebo sva\u0159ov\u00e1n\u00ed v\u0161ak m\u016f\u017ee u obou vyvolat m\u00edrn\u00fd magnetismus.<\/p>\n\n\n\n

      Specifick\u00e9 aplikace<\/strong><\/h4>\n\n\n\n

      Pro aplikace vy\u017eaduj\u00edc\u00ed nemagnetick\u00e9 materi\u00e1ly lze obecn\u011b pou\u017e\u00edt ob\u011b jakosti, i kdy\u017e pro zachov\u00e1n\u00ed t\u00e9to vlastnosti je zapot\u0159eb\u00ed opatrn\u00e9 zach\u00e1zen\u00ed b\u011bhem zpracov\u00e1n\u00ed.<\/p>\n\n\n\n

      Soci\u00e1ln\u00ed d\u016fkaz a autorita<\/strong><\/h2>\n\n\n\n

      Znaleck\u00e9 posudky<\/strong><\/h3>\n\n\n\n

      Podle Dr. Jamese M. Lutze, materi\u00e1lov\u00e9ho v\u011bdce specializuj\u00edc\u00edho se na nerezov\u00e9 oceli, \u201eV\u00fdb\u011br mezi 303 a 304 by se m\u011bl \u0159\u00eddit specifick\u00fdmi po\u017eadavky aplikace, se zvl\u00e1\u0161tn\u00ed pozornost\u00ed na obrobitelnost a odolnost proti korozi.\u201c<\/p>\n\n\n\n

      Ohlasy v oboru<\/strong><\/h4>\n\n\n\n

      Mnoho na\u0161ich klient\u016f ve spole\u010dnosti Machining Quote zaznamenalo v\u00fdrazn\u00e9 zv\u00fd\u0161en\u00ed efektivity pou\u017e\u00edv\u00e1n\u00edm 303 pro velkoobjemov\u00e9 obr\u00e1b\u011bc\u00ed \u00falohy, zat\u00edmco jin\u00ed up\u0159ednost\u0148ovali 304 pro jeho odolnost v n\u00e1ro\u010dn\u00fdch prost\u0159ed\u00edch.<\/p>\n\n\n\n

      Z\u00e1v\u011br<\/strong><\/h2>\n\n\n\n

      V\u00fdb\u011br mezi nerezovou ocel\u00ed 303 a 304 z\u00e1vis\u00ed do zna\u010dn\u00e9 m\u00edry na konkr\u00e9tn\u00edch pot\u0159eb\u00e1ch va\u0161eho projektu. 303 je bezkonkuren\u010dn\u00ed z hlediska obrobitelnosti, tak\u017ee je ide\u00e1ln\u00ed pro sou\u010d\u00e1sti, kter\u00e9 vy\u017eaduj\u00ed rozs\u00e1hl\u00e9 obr\u00e1b\u011bn\u00ed. Naproti tomu vynikaj\u00edc\u00ed odolnost proti korozi a tvarovatelnost 304 z n\u011bj \u010din\u00ed volbu pro \u0161ir\u0161\u00ed \u0161k\u00e1lu aplikac\u00ed, zejm\u00e9na t\u011bch, kter\u00e9 zahrnuj\u00ed drsn\u00e1 prost\u0159ed\u00ed nebo p\u0159\u00edsn\u00e9 hygienick\u00e9 po\u017eadavky.<\/p>\n\n\n\n

      Ve spole\u010dnosti Machining Quote jsme odhodl\u00e1ni poskytovat materi\u00e1ly nejvy\u0161\u0161\u00ed kvality a slu\u017eby obr\u00e1b\u011bn\u00ed, kter\u00e9 v\u00e1m pomohou dos\u00e1hnout va\u0161ich v\u00fdrobn\u00edch c\u00edl\u016f. A\u0165 u\u017e po\u017eadujete p\u0159esnou obrobitelnost 303 nebo robustn\u00ed odolnost 304, n\u00e1\u0161 t\u00fdm je tu, aby v\u00e1s podpo\u0159il odborn\u00fdm poradenstv\u00edm a \u0161pi\u010dkov\u00fdm servisem.<\/p>\n\n\n\n

      Nev\u00e1hejte n\u00e1s kontaktovat pro v\u00edce informac\u00ed nebo pro projedn\u00e1n\u00ed va\u0161ich konkr\u00e9tn\u00edch projektov\u00fdch pot\u0159eb. T\u011b\u0161\u00edme se na spolupr\u00e1ci s v\u00e1mi ve va\u0161em dal\u0161\u00edm \u00fasp\u011b\u0161n\u00e9m podniku.<\/p>","protected":false},"excerpt":{"rendered":"

      Ve spole\u010dnosti Machining Quote se v na\u0161ich v\u00fdrobn\u00edch procesech \u010dasto setk\u00e1v\u00e1me s \u0159adou materi\u00e1l\u016f, z nich\u017e ka\u017ed\u00fd nab\u00edz\u00ed jedine\u010dn\u00e9 vlastnosti a v\u00fdzvy. Dva takov\u00e9 materi\u00e1ly jsou nerezov\u00e9 oceli jakosti 303 a 304, kter\u00e9 se b\u011b\u017en\u011b pou\u017e\u00edvaj\u00ed v pr\u016fmyslu, ale slou\u017e\u00ed r\u016fzn\u00fdm \u00fa\u010del\u016fm d\u00edky sv\u00fdm odli\u0161n\u00fdm vlastnostem. V tomto p\u0159\u00edsp\u011bvku na blogu prozkoum\u00e1me kl\u00ed\u010dov\u00e9 [\u2026]<\/p>","protected":false},"author":1,"featured_media":3926,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_gspb_post_css":"","content-type":"","footnotes":""},"categories":[3],"tags":[],"class_list":["post-3877","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-material-selection-guide"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/machining-quote.com\/cs\/wp-json\/wp\/v2\/posts\/3877","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/machining-quote.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/machining-quote.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/machining-quote.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/machining-quote.com\/cs\/wp-json\/wp\/v2\/comments?post=3877"}],"version-history":[{"count":1,"href":"https:\/\/machining-quote.com\/cs\/wp-json\/wp\/v2\/posts\/3877\/revisions"}],"predecessor-version":[{"id":3878,"href":"https:\/\/machining-quote.com\/cs\/wp-json\/wp\/v2\/posts\/3877\/revisions\/3878"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/machining-quote.com\/cs\/wp-json\/wp\/v2\/media\/3926"}],"wp:attachment":[{"href":"https:\/\/machining-quote.com\/cs\/wp-json\/wp\/v2\/media?parent=3877"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/machining-quote.com\/cs\/wp-json\/wp\/v2\/categories?post=3877"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/machining-quote.com\/cs\/wp-json\/wp\/v2\/tags?post=3877"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}