{"id":3935,"date":"2024-06-27T13:37:40","date_gmt":"2024-06-27T13:37:40","guid":{"rendered":"https:\/\/machining-quote.com\/?p=3935"},"modified":"2024-07-01T01:11:32","modified_gmt":"2024-07-01T01:11:32","slug":"ss303-and-ss420","status":"publish","type":"post","link":"https:\/\/machining-quote.com\/cs\/bolg\/ss303-and-ss420\/","title":{"rendered":"Jak\u00fd je rozd\u00edl mezi SS303 a SS420?"},"content":{"rendered":"<h4>Obsah<\/h4>\n<ul>\n<li><a href=\"#overview-of-ss303-and-ss420-stainless-steel-grades\">P\u0159ehled t\u0159\u00edd nerezov\u00e9 oceli SS303 a SS420<\/a><\/li>\n<li><a href=\"#ss303-and-ss420-equivalent-material\">Ekvivalentn\u00ed materi\u00e1l SS303 a SS420<\/a><\/li>\n<li><a href=\"#pros-and-cons-303-vs-420-stainless-steel\">Klady a z\u00e1pory: Nerezov\u00e1 ocel 303 VS 420<\/a><\/li>\n<li><a href=\"#chemical-composition-differences-between-ss303-and-ss420\">Rozd\u00edly chemick\u00e9ho slo\u017een\u00ed mezi SS303 a SS420<\/a><\/li>\n<li><a href=\"#corrosion-resistance-of-aisi-303-vs-aisi-420\">Odolnost proti korozi AISI 303 vs. AISI 420<\/a><\/li>\n<li><a href=\"#mechanical-properties-comparing-ss303-and-ss420\">Mechanick\u00e9 vlastnosti: Porovn\u00e1n\u00ed SS303 a SS420<\/a><\/li>\n<li><a href=\"#heat-treatment-processes-for-en-1-4303-and-en-1-4028\">Procesy tepeln\u00e9ho zpracov\u00e1n\u00ed pro EN 1.4303 a EN 1.4028<\/a><\/li>\n<li><a href=\"#machinability-of-ss303-and-ss420\">Obrobitelnost SS303 a SS420<\/a><\/li>\n<li><a href=\"#applications-where-to-use-ss303-and-ss420\">Aplikace: Kde pou\u017e\u00edvat SS303 a SS420<\/a><\/li>\n<li><a href=\"#conclusion\">Z\u00e1v\u011br<\/a><\/li>\n<\/ul>\n<h2 id=\"overview-of-ss303-and-ss420-stainless-steel-grades\">P\u0159ehled t\u0159\u00edd nerezov\u00e9 oceli SS303 a SS420<\/h2>\n<p>Nerezov\u00e1 ocel, slitina slo\u017een\u00e1 p\u0159ev\u00e1\u017en\u011b ze \u017eeleza, chr\u00f3mu a uhl\u00edku, je zn\u00e1m\u00e1 svou odolnost\u00ed proti korozi a pevnost\u00ed. Mezi mnoha druhy nerezov\u00e9 oceli vynikaj\u00ed SS303 a SS420 sv\u00fdmi odli\u0161n\u00fdmi vlastnostmi a aplikacemi, kter\u00e9 jsou prim\u00e1rn\u011b poh\u00e1n\u011bny jejich odli\u0161n\u00fdm chemick\u00fdm slo\u017een\u00edm a mechanick\u00fdmi vlastnostmi. Pochopen\u00ed rozd\u00edl\u016f mezi t\u011bmito dv\u011bma t\u0159\u00eddami je z\u00e1sadn\u00ed pro in\u017een\u00fdry a konstrukt\u00e9ry p\u0159i v\u00fdb\u011bru vhodn\u00e9ho materi\u00e1lu pro konkr\u00e9tn\u00ed aplikace.<\/p>\n<h3>SS303 Nerezov\u00e1 ocel<\/h3>\n<ul>\n<li>Austenitick\u00fd typ<\/li>\n<li>V\u00fdborn\u00e1 obrobitelnost<\/li>\n<li>Nemagnetick\u00e9<\/li>\n<li>Obsahuje s\u00edru (0,15% a\u017e 0,35%)<\/li>\n<li>Ni\u017e\u0161\u00ed odolnost proti korozi ne\u017e jin\u00e9 austenitick\u00e9 t\u0159\u00eddy<\/li>\n<\/ul>\n<h3>Nerezov\u00e1 ocel SS420<\/h3>\n<ul>\n<li>Martenzitick\u00fd typ<\/li>\n<li>Vy\u0161\u0161\u00ed obsah uhl\u00edku (0,15% a\u017e 0,40%)<\/li>\n<li>Lze vytvrdit tepeln\u00fdm zpracov\u00e1n\u00edm<\/li>\n<li>Vy\u0161\u0161\u00ed pevnost a tvrdost<\/li>\n<li>Dobr\u00e1 odolnost proti korozi, ale m\u00e9n\u011b ne\u017e austenitick\u00e9 t\u0159\u00eddy<\/li>\n<li>Magnetick\u00fd<\/li>\n<\/ul>\n<h2 id=\"ss303-and-ss420-equivalent-material\">Ekvivalentn\u00ed materi\u00e1l SS303 a SS420<\/h2>\n<p>Pochopen\u00ed ekvivalentn\u00edch materi\u00e1l\u016f pro SS303 a SS420 pom\u00e1h\u00e1 p\u0159i v\u00fdb\u011bru alternativ v p\u0159\u00edpad\u011b pot\u0159eby.<\/p>\n<h3>Ekvivalentn\u00ed materi\u00e1ly SS303<\/h3>\n<ul>\n<li>AISI 303<\/li>\n<li>EN 1.4305<\/li>\n<\/ul>\n<h3>Ekvivalentn\u00ed materi\u00e1ly SS420<\/h3>\n<ul>\n<li>AISI 420<\/li>\n<li>EN 1.4021<\/li>\n<\/ul>\n<h2 id=\"pros-and-cons-303-vs-420-stainless-steel\">Klady a z\u00e1pory: Nerezov\u00e1 ocel 303 VS 420<\/h2>\n<p>V\u00fdb\u011br mezi SS303 a SS420 z\u00e1vis\u00ed na konkr\u00e9tn\u00edch pot\u0159eb\u00e1ch va\u0161\u00ed aplikace.<\/p>\n<h3>SS303<\/h3>\n<h4>Klady<\/h4>\n<ul>\n<li>V\u00fdborn\u00e1 obrobitelnost<\/li>\n<li>Nemagnetick\u00e9<\/li>\n<li>Dobr\u00e1 odolnost proti korozi pro v\u0161eobecn\u00e9 pou\u017eit\u00ed<\/li>\n<\/ul>\n<h4>Nev\u00fdhody<\/h4>\n<ul>\n<li>Ni\u017e\u0161\u00ed odolnost proti korozi v chloridov\u00e9m prost\u0159ed\u00ed<\/li>\n<li>Nen\u00ed tak siln\u00fd nebo tvrd\u00fd jako SS420<\/li>\n<\/ul>\n<h3>SS420<\/h3>\n<h4>Klady<\/h4>\n<ul>\n<li>Vysok\u00e1 pevnost a tvrdost<\/li>\n<li>Lze vytvrdit tepeln\u00fdm zpracov\u00e1n\u00edm<\/li>\n<li>Dobr\u00e1 odolnost proti opot\u0159eben\u00ed<\/li>\n<\/ul>\n<h4>Nev\u00fdhody<\/h4>\n<ul>\n<li>Ni\u017e\u0161\u00ed obrobitelnost<\/li>\n<li>Vy\u017eaduje v\u00edce \u00fadr\u017eby v korozivn\u00edm prost\u0159ed\u00ed<\/li>\n<\/ul>\n<h2 id=\"chemical-composition-differences-between-ss303-and-ss420\">Rozd\u00edly chemick\u00e9ho slo\u017een\u00ed mezi SS303 a SS420<\/h2>\n<p>Chemick\u00e9 slo\u017een\u00ed SS303 a SS420 definuje jejich jedine\u010dn\u00e9 vlastnosti a vhodn\u00e9 aplikace.<\/p>\n<h3>SS303 Chemick\u00e9 slo\u017een\u00ed<\/h3>\n<table border=\"1\">\n<tbody>\n<tr>\n<th>Prvek<\/th>\n<th>Procento<\/th>\n<\/tr>\n<tr>\n<td>Chrom<\/td>\n<td>17-19%<\/td>\n<\/tr>\n<tr>\n<td>Nikl<\/td>\n<td>8-10%<\/td>\n<\/tr>\n<tr>\n<td>S\u00edra<\/td>\n<td>0.15-0.35%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Chemick\u00e9 slo\u017een\u00ed SS420<\/h3>\n<table border=\"1\">\n<tbody>\n<tr>\n<th>Prvek<\/th>\n<th>Procento<\/th>\n<\/tr>\n<tr>\n<td>Chrom<\/td>\n<td>12-14%<\/td>\n<\/tr>\n<tr>\n<td>Uhl\u00edk<\/td>\n<td>0.15-0.40%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2 id=\"corrosion-resistance-of-aisi-303-vs-aisi-420\">Odolnost proti korozi AISI 303 vs. AISI 420<\/h2>\n<p>Odolnost proti korozi je kritick\u00fdm faktorem p\u0159i v\u00fdb\u011bru mezi AISI 303 a AISI 420 pro r\u016fzn\u00e9 aplikace.<\/p>\n<h3>Odolnost proti korozi AISI 303<\/h3>\n<ul>\n<li>Dobr\u00e9 v m\u00e9n\u011b agresivn\u00edm prost\u0159ed\u00ed<\/li>\n<li>V chloridov\u00e9m prost\u0159ed\u00ed n\u00e1chyln\u00fd k d\u016flkov\u00e9 a \u0161t\u011brbinov\u00e9 korozi<\/li>\n<\/ul>\n<h3>Odolnost proti korozi AISI 420<\/h3>\n<ul>\n<li>Dobr\u00e9 proti atmosf\u00e9rick\u00fdm podm\u00ednk\u00e1m, vod\u011b a m\u00edrn\u00fdm kyselin\u00e1m<\/li>\n<li>Zraniteln\u00fd v\u016f\u010di chlorid\u016fm a agresivn\u00edm podm\u00ednk\u00e1m prost\u0159ed\u00ed<\/li>\n<\/ul>\n<h2 id=\"mechanical-properties-comparing-ss303-and-ss420\">Mechanick\u00e9 vlastnosti: Porovn\u00e1n\u00ed SS303 a SS420<\/h2>\n<p>Pochopen\u00ed mechanick\u00fdch vlastnost\u00ed SS303 a SS420 je z\u00e1sadn\u00ed pro v\u00fdb\u011br spr\u00e1vn\u00e9ho materi\u00e1lu pro konkr\u00e9tn\u00ed aplikace.<\/p>\n<h3>SS303 Mechanick\u00e9 vlastnosti<\/h3>\n<ul>\n<li>Pevnost v tahu: 620-850 MPa<\/li>\n<li>Mez kluzu: 240-450 MPa<\/li>\n<li>Ta\u017enost p\u0159i p\u0159etr\u017een\u00ed: ~50%<\/li>\n<\/ul>\n<h3>SS420 Mechanick\u00e9 vlastnosti<\/h3>\n<ul>\n<li>Pevnost v tahu: 700-1500 MPa<\/li>\n<li>Mez kluzu: 500-1000 MPa<\/li>\n<li>Ta\u017enost p\u0159i p\u0159etr\u017een\u00ed: 10-25%<\/li>\n<\/ul>\n<h2 id=\"heat-treatment-processes-for-en-1-4303-and-en-1-4028\">Procesy tepeln\u00e9ho zpracov\u00e1n\u00ed pro EN 1.4303 a EN 1.4028<\/h2>\n<p>Procesy tepeln\u00e9ho zpracov\u00e1n\u00ed jsou \u017eivotn\u011b d\u016fle\u017eit\u00e9 pro dosa\u017een\u00ed po\u017eadovan\u00fdch vlastnost\u00ed nerezov\u00fdch ocel\u00ed EN 1.4303 (SS303) a EN 1.4028 (SS420).<\/p>\n<h3>EN 1.4303 (SS303) Tepeln\u00e9 zpracov\u00e1n\u00ed<\/h3>\n<ul>\n<li>\u017d\u00edh\u00e1n\u00ed: 1010-1120\u00b0C, pot\u00e9 rychl\u00e9 ochlazen\u00ed<\/li>\n<li>Uvol\u0148uje nap\u011bt\u00ed, zlep\u0161uje tvarovatelnost a sva\u0159itelnost<\/li>\n<\/ul>\n<h3>EN 1.4028 (SS420) Tepeln\u00e9 zpracov\u00e1n\u00ed<\/h3>\n<ul>\n<li>Kalen\u00ed: 950-1050\u00b0C, pot\u00e9 kalen\u00ed v oleji nebo na vzduchu<\/li>\n<li>Popou\u0161t\u011bn\u00ed: 100-400\u00b0C pro \u00fapravu tvrdosti a hou\u017eevnatosti<\/li>\n<\/ul>\n<h2 id=\"machinability-of-ss303-and-ss420\">Obrobitelnost SS303 a SS420<\/h2>\n<p>Obrobitelnost nerezov\u00fdch ocel\u00ed SS303 a SS420 se v\u00fdrazn\u011b li\u0161\u00ed, co\u017e ovliv\u0148uje jejich vhodnost pro r\u016fzn\u00e9 v\u00fdrobn\u00ed procesy.<\/p>\n<h3>SS303 Obrobitelnost<\/h3>\n<ul>\n<li>Vylep\u0161eno p\u0159id\u00e1n\u00edm s\u00edry<\/li>\n<li>Sni\u017euje opot\u0159eben\u00ed n\u00e1stroje a zvy\u0161uje rychlost obr\u00e1b\u011bn\u00ed<\/li>\n<li>Ide\u00e1ln\u00ed pro d\u00edly vy\u017eaduj\u00edc\u00ed rozs\u00e1hl\u00e9 obr\u00e1b\u011bn\u00ed<\/li>\n<\/ul>\n<h3>Obrobitelnost SS420<\/h3>\n<ul>\n<li>T\u011b\u017e\u0161\u00ed opracov\u00e1n\u00ed kv\u016fli vy\u0161\u0161\u00edmu obsahu uhl\u00edku<\/li>\n<li>Vy\u017eaduje robustn\u00ed n\u00e1stroje odoln\u00e9 proti opot\u0159eben\u00ed<\/li>\n<li>\u017d\u00edh\u00e1n\u00ed p\u0159ed obr\u00e1b\u011bn\u00edm m\u016f\u017ee zlep\u0161it zpracovatelnost<\/li>\n<\/ul>\n<h2 id=\"applications-where-to-use-ss303-and-ss420\">Aplikace: Kde pou\u017e\u00edvat SS303 a SS420<\/h2>\n<p>V\u00fdb\u011br spr\u00e1vn\u00e9 nerezov\u00e9 oceli pro konkr\u00e9tn\u00ed aplikace zaji\u0161\u0165uje optim\u00e1ln\u00ed v\u00fdkon a dlouhou \u017eivotnost.<\/p>\n<h3>Aplikace SS303<\/h3>\n<ul>\n<li>Kov\u00e1n\u00ed<\/li>\n<li>\u0160rouby<\/li>\n<li>\u010c\u00e1sti stroj\u016f<\/li>\n<li>Nen\u00ed ide\u00e1ln\u00ed pro drsn\u00e1 korozivn\u00ed prost\u0159ed\u00ed<\/li>\n<\/ul>\n<h3>Aplikace SS420<\/h3>\n<ul>\n<li>P\u0159\u00edbory<\/li>\n<li>Chirurgick\u00e9 n\u00e1stroje<\/li>\n<li>\u010cepele<\/li>\n<li>Aplikace vy\u017eaduj\u00edc\u00ed vysokou odolnost proti opot\u0159eben\u00ed<\/li>\n<\/ul>\n<h2 id=\"conclusion\">Z\u00e1v\u011br<\/h2>\n<p>Hlavn\u00ed rozd\u00edl mezi nerezovou ocel\u00ed SS303 a SS420 spo\u010d\u00edv\u00e1 v jejich slo\u017een\u00ed a mechanick\u00fdch vlastnostech. SS303 je nerezov\u00e1 ocel austenitick\u00e9ho typu zn\u00e1m\u00e1 pro svou dobrou obrobitelnost a pou\u017e\u00edv\u00e1 se hlavn\u011b tam, kde je po\u017eadov\u00e1no snadn\u00e9 obr\u00e1b\u011bn\u00ed. Obsahuje s\u00edru pro zlep\u0161en\u00ed jeho obrobitelnosti, ale m\u00e1 ni\u017e\u0161\u00ed odolnost proti korozi ve srovn\u00e1n\u00ed s jin\u00fdmi austenitick\u00fdmi druhy. Na druh\u00e9 stran\u011b je SS420 martenzitick\u00e1 nerezov\u00e1 ocel s vy\u0161\u0161\u00edm obsahem uhl\u00edku, kter\u00fd j\u00ed poskytuje vynikaj\u00edc\u00ed pevnost a tvrdost, ale ni\u017e\u0161\u00ed odolnost proti korozi ne\u017e SS303. SS420 se \u010dasto pou\u017e\u00edv\u00e1 v aplikac\u00edch vy\u017eaduj\u00edc\u00edch vysokou pevnost a st\u0159edn\u00ed odolnost proti korozi, jako jsou p\u0159\u00edbory a chirurgick\u00e9 n\u00e1stroje.<\/p>","protected":false},"excerpt":{"rendered":"<p>Obsah P\u0159ehled t\u0159\u00edd nerezov\u00e9 oceli SS303 a SS420 Ekvivalentn\u00ed materi\u00e1l SS303 a SS420 Klady a z\u00e1pory: Nerezov\u00e1 ocel 303 VS 420 Rozd\u00edly chemick\u00e9ho slo\u017een\u00ed mezi SS303 a SS420 Odolnost proti korozi AISI 303 vs. Mechanick\u00e9 vlastnosti AISI 420: Porovn\u00e1n\u00ed proces\u016f tepeln\u00e9ho zpracov\u00e1n\u00ed SS303 a SS420 pro obrobitelnost podle EN 1.4303 a EN 1.4028 [\u2026]<\/p>","protected":false},"author":1,"featured_media":4017,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_gspb_post_css":"","content-type":"","footnotes":""},"categories":[3],"tags":[],"class_list":["post-3935","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\/3935","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=3935"}],"version-history":[{"count":2,"href":"https:\/\/machining-quote.com\/cs\/wp-json\/wp\/v2\/posts\/3935\/revisions"}],"predecessor-version":[{"id":3938,"href":"https:\/\/machining-quote.com\/cs\/wp-json\/wp\/v2\/posts\/3935\/revisions\/3938"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/machining-quote.com\/cs\/wp-json\/wp\/v2\/media\/4017"}],"wp:attachment":[{"href":"https:\/\/machining-quote.com\/cs\/wp-json\/wp\/v2\/media?parent=3935"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/machining-quote.com\/cs\/wp-json\/wp\/v2\/categories?post=3935"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/machining-quote.com\/cs\/wp-json\/wp\/v2\/tags?post=3935"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}