{"id":2262,"date":"2021-08-12T09:00:38","date_gmt":"2021-08-12T09:00:38","guid":{"rendered":"https:\/\/wldstainless.com\/?p=2262"},"modified":"2021-08-12T09:01:17","modified_gmt":"2021-08-12T09:01:17","slug":"is-304-stainless-steel-medical-grade","status":"publish","type":"post","link":"https:\/\/wldstainless.com\/pl\/is-304-stainless-steel-medical-grade\/","title":{"rendered":"Czy stal nierdzewna typu 304 jest przeznaczona do u\u017cytku medycznego?"},"content":{"rendered":"<p>W por\u00f3wnaniu z stal\u0105 nierdzewn\u0105 przemys\u0142ow\u0105, stal nierdzewna medyczna ma bardziej rygorystyczne wymagania co do sk\u0142adu chemicznego ze wzgl\u0119du na jej g\u0142\u00f3wne w\u0142a\u015bciwo\u015bci: redukcja rozpuszczania jon\u00f3w metalu oraz unikanie lokalnej korozji, takiej jak korozja mi\u0119dzycz\u0105steczkowa i korozja napr\u0119\u017ceniowa. Zawarto\u015b\u0107 element\u00f3w stopowych, takich jak Ni i Cr, jest wy\u017csza ni\u017c w przypadku zwyk\u0142ej stali nierdzewnej (zazwyczaj powy\u017cej granicy dopuszczalnej dla zwyk\u0142ej stali nierdzewnej), podczas gdy zawarto\u015b\u0107 pierwiastk\u00f3w zanieczyszczaj\u0105cych, takich jak S i P, jest ni\u017csza ni\u017c w przypadku zwyk\u0142ej stali nierdzewnej. Od lat stal nierdzewna medyczna jest preferowanym materia\u0142em do zastosowa\u0144 chirurgicznych, zw\u0142aszcza w sytuacjach krytycznej opieki medycznej i chirurgii. Element Ni i Cr charakteryzuje si\u0119 wy\u017csz\u0105 odporno\u015bci\u0105 na korozj\u0119, co pozwala na jej zastosowanie w miejscach, gdzie wymagane s\u0105 implanty ortopedyczne, jamy ustne oraz urz\u0105dzenia medyczne. Stal nierdzewna, rodzaj stop\u00f3w Ni-Cr, oferuje wiele zalet w por\u00f3wnaniu z standardow\u0105 stal\u0105 nierdzewn\u0105. Rodzaj stopu stosowanego w medycznym stali nierdzewnej u\u017cywanej w instrumentach chirurgicznych ma kluczowe znaczenie dla zdolno\u015bci tego narz\u0119dzia do odporno\u015bci na korozj\u0119 oraz jego niezawodno\u015bci w przypadku braku b\u0142\u0119d\u00f3w wewn\u0119trznych i szczelin.<\/p>\n<p>Wiele stali nierdzewnych mo\u017ce by\u0107 u\u017cywane do cel\u00f3w medycznych; najcz\u0119\u015bciej spotykanym z nich jest stal austenitowa 316 (AISI 316L), znana jako \u201estali chirurgicznej\u201d. AISI 301 jest najcz\u0119\u015bciej u\u017cywanym metalem do produkcji spr\u0119\u017cyn medycznych. Inne powszechnie u\u017cywane stalowe rodzaje stali nierdzewnej do cel\u00f3w medycznych to 420, 440 i 17-4PH. Te stalowe rodzaje stali nierdzewnej Martensita nie s\u0105 tak odporne na korozj\u0119 jak stalowe rodzaje austenitowe 316, ale charakteryzuj\u0105 si\u0119 wy\u017csz\u0105 twardo\u015bci\u0105. Dlatego zak\u0142ady produkuj\u0105ce stalowe rodzaje stali nierdzewnej Martensita s\u0105 u\u017cywane do produkcji narz\u0119dzi tn\u0105cych lub innych urz\u0105dze\u0144 nieimplantuowanych. Stal nierdzewna Martensita osi\u0105gn\u0119\u0142a powszechn\u0105 popularno\u015b\u0107 ze wzgl\u0119du na niezr\u00f3wnan\u0105 trwa\u0142o\u015b\u0107, odporno\u015b\u0107 na obr\u00f3bk\u0119 ciepln\u0105, funkcjonalno\u015b\u0107 chirurgiczn\u0105 oraz odporno\u015b\u0107 na korozj\u0119. Stosowana jest w wielu zastosowaniach, w tym w ramach \u0142aw szpitalnych, \u0142\u00f3\u017ckach, p\u0142ytach ko\u0144cowych, r\u0119kawicach chirurgicznych, s\u0142upkach do wlewu p\u0142ynu oraz zszywach. Ze wzgl\u0119du na jej wyj\u0105tkow\u0105 odporno\u015b\u0107 oraz konieczno\u015b\u0107 jej stosowania w specjalistycznych aplikacjach, niezwykle wa\u017cne jest, aby producenci stosuj\u0105cy t\u0119 klas\u0119 stali nierdzewnej zwracali szczeg\u00f3ln\u0105 uwag\u0119 na kontrol\u0119 jako\u015bci i specyfikacj\u0119 produkcji. Najpopularniejszym rodzajem stali nierdzewnej medycznej stosowanej w produkcji narz\u0119dzi chirurgicznych jest <a href=\"https:\/\/wldstainless.com\/materials\/austenitic-stainless-steel\/304-304l-stainless-steel\/\">304<\/a> 316. Jednak najlepsze stopy maj\u0105 ni\u017csz\u0105 zawarto\u015b\u0107 w\u0119gla oraz dodatkow\u0105 stop\u0119 molibdenu, jak w przypadku stali 316L i 317L.<\/p>\n<p>Stal nierdzewna 304, czyli stal nierdzewna 18-8, seria stali nierdzewnej 304 obejmuje tak\u017ce stopie\u0144 w\u0119glowy ni\u017cszy ni\u017c 18%. <a href=\"https:\/\/wldstainless.com\/materials\/austenitic-stainless-steel\/304-304l-stainless-steel\/\">304L<\/a>W przypadku stali nierdzewnej 304H przeznaczonej do zastosowa\u0144 termicznych pojawia si\u0119 pytanie: czy stal nierdzewna 304 mo\u017ce by\u0107 stosowana w celach medycznych? Istnieje fakt, \u017ce w stali 1926,18% CR-8% Ni (<a href=\"https:\/\/wldstainless.com\/materials\/austenitic-stainless-steel\/304-304l-stainless-steel\/\">AISI 304<\/a>) zosta\u0142 po raz pierwszy zastosowany jako materia\u0142 implantologiczny, a p\u00f3\u017aniej w stomatologii. Dopiero w 1952 roku w klinice zacz\u0119to stosowa\u0107 stal nierdzewn\u0105 AISI 316 zawieraj\u0105c\u0105 2%Mo i stopniowo zast\u0119powa\u0107 j\u0105 stal\u0105 nierdzewn\u0105 AISI 304. W celu rozwi\u0105zania problemu korozji mi\u0119dzykrystalicznej stali nierdzewnej w latach 60. XX wieku zacz\u0119to stosowa\u0107 w medycynie stal nierdzewn\u0105 AISI 316L i AISI 317L o niskim st\u0119\u017ceniu w\u0119gla, o dobrej biokompatybilno\u015bci, w\u0142a\u015bciwo\u015bciach mechanicznych i lepszej odporno\u015bci na korozj\u0119. Jednak\u017ce ni jest potencjalnym czynnikiem uczulaj\u0105cym organizm cz\u0142owieka. W ostatnich latach wiele kraj\u00f3w ograniczy\u0142o zawarto\u015b\u0107 niklu w artyku\u0142ach codziennego u\u017cytku i materia\u0142ach medycznych, a maksymalne dopuszczalne st\u0119\u017cenie niklu zmniejsza si\u0119 coraz bardziej. Norma 94\/27\/WE Parlamentu Europejskiego, og\u0142oszona w 1994 roku, wymaga, aby st\u0119\u017cenie niklu w materia\u0142ach wszczepianych do cia\u0142a cz\u0142owieka (materia\u0142ach implantacyjnych, protezach ortodontycznych itp.) nie przekracza\u0142o 0,105%; dla materia\u0142\u00f3w metalowych (szmiesznik\u00f3w, zegark\u00f3w, pier\u015bcionk\u00f3w, bransoletek itp.), kt\u00f3re przez d\u0142ugi czas s\u0105 nara\u017cone na kontakt z ludzk\u0105 sk\u00f3r\u0105, maksymalne st\u0119\u017cenie niklu nie powinno przekracza\u0107 0,15 mg\/cm2 na tydzie\u0144. Obecnie 304 nadal jest stosowany w produkcji powszechnych narz\u0119dzi medycznych, takich jak strzykawki, no\u017cyczki medyczne, pi\u00f3rka i no\u017ce skalplowe.<\/p>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>Compared with industrial stainless steel, medical stainless steel has more strict requirements on chemical composition because of its main properties of reducing metal ion dissolution and avoiding local corrosion such as intergranular corrosion and stress corrosion. The content of alloy elements such as Ni and Cr is higher than that of ordinary stainless steel (usually [&hellip;]<\/p>","protected":false},"author":1,"featured_media":2263,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[23],"tags":[],"class_list":["post-2262","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"304 stainless steel, namely 18-8 stainless steel, 304 series stainless steel also includes lower carbon 304L, 304H for heat-resistant purposes, there is a question, 304 stainless steel can be used for medical purposes?\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"WLD Stainless\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/wldstainless.com\/pl\/is-304-stainless-steel-medical-grade\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.1.1\" \/>\n\t\t<script type=\"application\/ld+json\" class=\"aioseo-schema\">\n\t\t\t{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/wldstainless.com\\\/pl\\\/is-304-stainless-steel-medical-grade\\\/#article\",\"name\":\"Is 304 stainless steel medical grade? 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