{"id":3961,"date":"2026-06-30T08:16:37","date_gmt":"2026-06-30T08:16:37","guid":{"rendered":"https:\/\/manufactorhinge.com\/?p=3961"},"modified":"2026-06-30T08:20:02","modified_gmt":"2026-06-30T08:20:02","slug":"sus-304-vs-sus-316-stainless-steel-hinges","status":"publish","type":"post","link":"https:\/\/manufactorhinge.com\/fr\/sus-304-vs-sus-316-stainless-steel-hinges\/","title":{"rendered":"Charni\u00e8res en acier inoxydable SUS 304 et SUS 316 | Guide des nuances d'acier inoxydable"},"content":{"rendered":"<p class=\"wp-block-paragraph\"><strong>Optez pour l'acier inoxydable SUS 304 pour les charni\u00e8res destin\u00e9es \u00e0 un usage g\u00e9n\u00e9ral en ext\u00e9rieur, aux zones soumises \u00e0 un lavage \u00e0 haute pression et \u00e0 l'industrie agroalimentaire, et privil\u00e9giez le SUS 316 en cas de pr\u00e9sence de chlorures \u2014 sites c\u00f4tiers, \u00e9quipements maritimes, sel de d\u00e9neigement et de nombreux environnements chimiques \u2014 car c\u2019est la teneur en molybd\u00e8ne suppl\u00e9mentaire du 316 qui lui permet de r\u00e9sister \u00e0 la corrosion par piq\u00fbres, ce dont le 304 est incapable.<\/strong> Ces deux nuances sont des aciers inoxydables r\u00e9sistants \u00e0 la corrosion et d'aspect identique ; la diff\u00e9rence r\u00e9side dans leur comportement en pr\u00e9sence de sel ou de produits chimiques dans l'air ou dans l'eau. Ce guide explique la v\u00e9ritable distinction entre ces deux nuances et comment choisir la nuance adapt\u00e9e \u00e0 une charni\u00e8re en fonction de l'environnement, afin que vous ne sous-dimensionniez pas une porte en zone c\u00f4ti\u00e8re et que vous ne payiez pas trop cher pour une nuance 316 alors qu'une nuance 304 suffit amplement.<\/p><div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_1 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table des mati\u00e8res<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table des mati\u00e8res\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/manufactorhinge.com\/fr\/sus-304-vs-sus-316-stainless-steel-hinges\/#What_actually_differs_between_304_and_316\" >Quelles sont les diff\u00e9rences concr\u00e8tes entre les nuances 304 et 316 ?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/manufactorhinge.com\/fr\/sus-304-vs-sus-316-stainless-steel-hinges\/#Why_a_hinge_corrodes_earlier_than_flat_stainless\" >Pourquoi une charni\u00e8re se corrode-t-elle plus rapidement que l'acier inoxydable plat ?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/manufactorhinge.com\/fr\/sus-304-vs-sus-316-stainless-steel-hinges\/#How_to_choose_the_grade_by_environment\" >Comment choisir la qualit\u00e9 en fonction de l'environnement<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/manufactorhinge.com\/fr\/sus-304-vs-sus-316-stainless-steel-hinges\/#From_the_field_316_hinges_on_a_boat_hatch\" >Sur le terrain : 316 charni\u00e8res sur une trappe de bateau<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/manufactorhinge.com\/fr\/sus-304-vs-sus-316-stainless-steel-hinges\/#Beyond_the_grade_finish_and_dissimilar_metals\" >Au-del\u00e0 de la nuance : finition et m\u00e9taux dissemblables<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/manufactorhinge.com\/fr\/sus-304-vs-sus-316-stainless-steel-hinges\/#RFQ_checklist_for_stainless_hinges\" >Liste de contr\u00f4le pour les demandes de devis concernant les charni\u00e8res en acier inoxydable<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/manufactorhinge.com\/fr\/sus-304-vs-sus-316-stainless-steel-hinges\/#FAQ\" >FAQ<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n\n<p class=\"wp-block-paragraph\"><strong>R\u00e9ponse rapide :<\/strong> 304 pour une utilisation industrielle g\u00e9n\u00e9rale, en ext\u00e9rieur et dans des environnements soumis \u00e0 des lavages fr\u00e9quents ; 316 lorsque l'exposition aux chlorures est r\u00e9elle \u2014 milieu c\u00f4tier, marin, sal\u00e9 ou chimique. En cas de doute \u00e0 proximit\u00e9 de l'eau de mer, le 316 constitue le choix le plus s\u00fbr. Le choix du mat\u00e9riau s'inscrit dans le cadre d'une s\u00e9lection plus large abord\u00e9e dans <a href=\"https:\/\/manufactorhinge.com\/fr\/how-to-choose-industrial-hinge\/\">Comment choisir une charni\u00e8re industrielle<\/a>; cette page traite sp\u00e9cifiquement de la d\u00e9cision relative aux notes.<\/p>\n\n\n\n<h2 id=\"what-actually-differs-between-304-and-316\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_actually_differs_between_304_and_316\"><\/span>Quelles sont les diff\u00e9rences concr\u00e8tes entre les nuances 304 et 316 ?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ces deux aciers sont des aciers inoxydables aust\u00e9nitiques contenant du chrome et du nickel, et tous deux forment une couche d'oxyde passive qui r\u00e9siste \u00e0 la rouille. La diff\u00e9rence essentielle r\u00e9side dans le fait que le 316 contient environ 2\u20133% <strong>molybd\u00e8ne<\/strong>, ce qui am\u00e9liore consid\u00e9rablement la r\u00e9sistance \u00e0 <em>corrosion par piq\u00fbres et corrosion interstitielle<\/em> face aux chlorures. En pratique, c\u2019est tout ce qu\u2019il y a \u00e0 savoir : dans un air pur, dans des environnements int\u00e9rieurs secs ou sous une pluie ordinaire, les aciers 304 et 316 offrent des performances quasi identiques, et le 304 constitue le choix le plus judicieux et le moins co\u00fbteux. Mais d\u00e8s qu\u2019il y a pr\u00e9sence de chlorures \u2014 embruns marins, humidit\u00e9 c\u00f4ti\u00e8re, sel de d\u00e9neigement, atmosph\u00e8re des piscines ou de nombreux produits chimiques industriels \u2014, le 304 peut pr\u00e9senter des piq\u00fbres et des traces de rouille, tandis que le 316 conserve une surface intacte. Une charni\u00e8re est particuli\u00e8rement expos\u00e9e dans ce cas, car elle comporte des pi\u00e8ces mobiles et des interstices \u00e9troits autour de la goupille et des battants, l\u00e0 o\u00f9 la corrosion caverneuse a tendance \u00e0 se d\u00e9velopper.<\/p>\n\n\n\n<h2 id=\"why-a-hinge-corrodes-earlier-than-flat-stainless\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Why_a_hinge_corrodes_earlier_than_flat_stainless\"><\/span>Pourquoi une charni\u00e8re se corrode-t-elle plus rapidement que l'acier inoxydable plat ?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Un panneau plat en acier inoxydable et une charni\u00e8re en acier inoxydable de la m\u00eame nuance ne vieillissent pas de la m\u00eame mani\u00e8re, et il est utile d\u2019en comprendre les raisons avant de choisir une nuance. Une charni\u00e8re pr\u00e9sente toutes les caract\u00e9ristiques que la corrosion exploite : la goupille et l\u2019articulation forment des interstices \u00e9troits qui se chevauchent, les vantaux se chevauchent avec une fine pellicule d\u2019humidit\u00e9 entre eux, et les trous de vis ainsi que les logements des fixations retiennent l\u2019eau et les contaminants. Ce sont l\u00e0 des interstices, et la corrosion interstitielle n\u2019a besoin que d\u2019un peu d\u2019humidit\u00e9 charg\u00e9e en chlorure pour se d\u00e9clencher \u2014 \u00e0 un endroit o\u00f9 elle ne peut \u00eatre ni rinc\u00e9e ni s\u00e9ch\u00e9e. Ainsi, une charni\u00e8re peut pr\u00e9senter de la rouille l\u00e0 o\u00f9 un panneau lisse du m\u00eame acier reste propre. Sur l\u2019acier 304 dans un environnement chlorur\u00e9, les premiers signes sont pr\u00e9visibles : taches de rouille et stries brunes pr\u00e8s des trous de vis, piq\u00fbres autour de la zone de l\u2019axe, et un joint qui se raidit progressivement \u00e0 mesure que les produits de corrosion s\u2019accumulent dans la rotule. Cette vuln\u00e9rabilit\u00e9 au niveau du joint est la v\u00e9ritable raison pour laquelle le choix de la nuance est plus important pour une charni\u00e8re que pour la t\u00f4le qui l\u2019entoure.<\/p>\n\n\n\n<h2 id=\"how-to-choose-the-grade-by-environment\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_to_choose_the_grade_by_environment\"><\/span>Comment choisir la qualit\u00e9 en fonction de l'environnement<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Environnement<\/th><th>Niveau recommand\u00e9<\/th><th>Pourquoi<\/th><\/tr><\/thead><tbody><tr><td>Industriel en int\u00e9rieur, \u00e0 sec<\/td><td>304 (ou rev\u00eatu\/zingu\u00e9 pour des raisons de co\u00fbt)<\/td><td>Pas de charge en chlorure ; l'acier 316 n'est pas n\u00e9cessaire<\/td><\/tr><tr><td>Utilisation g\u00e9n\u00e9rale en ext\u00e9rieur, exposition \u00e0 la pluie<\/td><td>304<\/td><td>R\u00e9siste bien aux intemp\u00e9ries sans chlorures<\/td><\/tr><tr><td>Nettoyage au jet d'eau \/ secteur agroalimentaire<\/td><td>304 (316 pour les d\u00e9sinfectants agressifs)<\/td><td>Le 304 convient \u00e0 la plupart des applications n\u00e9cessitant un lavage \u00e0 haute pression ; le 316 est destin\u00e9 aux produits chimiques agressifs<\/td><\/tr><tr><td>En bord de mer \/ \u00e0 proximit\u00e9 de l'air marin<\/td><td>316<\/td><td>L'air charg\u00e9 en chlorure attaque l'acier 304 au fil du temps<\/td><\/tr><tr><td>Marine \/ sur l'eau<\/td><td>316<\/td><td>L'exposition directe au sel n\u00e9cessite du molybd\u00e8ne<\/td><\/tr><tr><td>Produit chimique \/ sel de d\u00e9neigement<\/td><td>316<\/td><td>Les chlorures agressifs attaquent l'acier 304<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">La r\u00e8gle de base que la plupart des ing\u00e9nieurs appliquent est la suivante : opter par d\u00e9faut pour le 304, et passer au 316 d\u00e8s que des chlorures entrent en jeu. Le surco\u00fbt li\u00e9 au 316 est bien r\u00e9el ; ce n\u2019est donc pas automatiquement le \u201c meilleur \u201d choix, mais c\u2019est le choix appropri\u00e9 dans les environnements o\u00f9 le 304 pr\u00e9senterait une d\u00e9faillance pr\u00e9matur\u00e9e. L\u2019erreur la plus co\u00fbteuse est l\u2019inverse : installer une charni\u00e8re en 304 sur une porte situ\u00e9e en bord de mer ou dans un environnement marin pour faire des \u00e9conomies, puis remplacer les charni\u00e8res rouill\u00e9es au bout d\u2019un an ou deux.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Une mise en garde dans l'autre sens : le 316 est plus r\u00e9sistant au chlorure, mais pas inoxydable. Il peut tout de m\u00eame se corroder si sa surface est contamin\u00e9e ou mal finie, si de l'eau de mer reste emprisonn\u00e9e dans une fissure sans jamais s\u00e9cher, ou s'il est boulonn\u00e9 avec des fixations inadapt\u00e9es dans un joint humide. Opter pour le 316 est le bon choix dans les environnements chlor\u00e9s, mais cela ne dispense pas d\u2019une finition soign\u00e9e, d\u2019un bon drainage et de fixations adapt\u00e9es.<\/p>\n\n\n\n<h2 id=\"from-the-field-316-hinges-on-a-boat-hatch\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"From_the_field_316_hinges_on_a_boat_hatch\"><\/span>Sur le terrain : 316 charni\u00e8res sur une trappe de bateau<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/manufactorhinge.com\/wp-content\/uploads\/2026\/06\/316-stainless-steel-hinge-boat-hatch-1024x768.webp\" alt=\"Charni\u00e8res en acier inoxydable SUS 316 sur une trappe de bateau dans un environnement marin en eau sal\u00e9e\" class=\"wp-image-3962\" style=\"width:791px;height:auto\" srcset=\"https:\/\/manufactorhinge.com\/wp-content\/uploads\/2026\/06\/316-stainless-steel-hinge-boat-hatch-1024x768.webp 1024w, https:\/\/manufactorhinge.com\/wp-content\/uploads\/2026\/06\/316-stainless-steel-hinge-boat-hatch-300x225.webp 300w, https:\/\/manufactorhinge.com\/wp-content\/uploads\/2026\/06\/316-stainless-steel-hinge-boat-hatch-768x576.webp 768w, https:\/\/manufactorhinge.com\/wp-content\/uploads\/2026\/06\/316-stainless-steel-hinge-boat-hatch-16x12.webp 16w, https:\/\/manufactorhinge.com\/wp-content\/uploads\/2026\/06\/316-stainless-steel-hinge-boat-hatch.webp 1448w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">La trappe illustr\u00e9e ici est un exemple parfait d'utilisation de l'acier 316. Il s'agit de <strong>Charni\u00e8res en acier inoxydable 316 sur une trappe de bateau<\/strong> \u2014 la porte d\u2019un compartiment de rangement situ\u00e9 sur un pont d\u00e9couvert, directement expos\u00e9e chaque jour aux embruns sal\u00e9s et \u00e0 l\u2019air marin humide. C\u2019est un environnement que l\u2019acier 304 ne peut supporter longtemps : la charge en chlorure commencerait \u00e0 piquer la surface et \u00e0 s\u2019infiltrer dans les interstices entre la goupille et la lame ; or, sur un navire, une charni\u00e8re de trappe corrod\u00e9e pose \u00e0 la fois un probl\u00e8me d\u2019entretien et de s\u00e9curit\u00e9. Le molybd\u00e8ne pr\u00e9sent dans l\u2019acier 316 remplit parfaitement sa fonction, en pr\u00e9servant l\u2019int\u00e9grit\u00e9 de la surface et de l\u2019articulation mobile malgr\u00e9 une exposition continue au sel. C\u2019est l\u2019illustration la plus simple de la r\u00e8gle : lorsque l\u2019application se trouve dans ou \u00e0 proximit\u00e9 de l\u2019eau de mer, le choix de la nuance est d\u00e9j\u00e0 tout trouv\u00e9.<\/p>\n\n\n\n<h2 id=\"beyond-the-grade-finish-and-dissimilar-metals\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Beyond_the_grade_finish_and_dissimilar_metals\"><\/span>Au-del\u00e0 de la nuance : finition et m\u00e9taux dissemblables<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Deux \u00e9l\u00e9ments li\u00e9s d\u00e9terminent si m\u00eame une bonne note est durable. Premi\u00e8rement, <strong>terminer<\/strong>: une surface propre, passiv\u00e9e ou polie, r\u00e9siste mieux \u00e0 la corrosion qu\u2019une surface rugueuse ou contamin\u00e9e, car les piq\u00fbres se forment \u00e0 partir des d\u00e9fauts de surface et des particules de fer incrust\u00e9es \u2014 ainsi, un acier 304 bien fini peut offrir de meilleures performances qu\u2019un acier mal fini, et la passivation est importante pour ces deux nuances. Deuxi\u00e8mement, <strong>m\u00e9taux dissemblables<\/strong>: l'association d'une charni\u00e8re en acier inoxydable avec des fixations ou un cadre en m\u00e9tal tr\u00e8s diff\u00e9rent, dans un environnement humide et salin, peut favoriser la corrosion galvanique ; il convient donc d'harmoniser le mat\u00e9riau des fixations avec celui de la charni\u00e8re et de pr\u00eater attention au support sur lequel la charni\u00e8re est viss\u00e9e. Pour les portes les plus lourdes dans ces environnements, v\u00e9rifiez conjointement la charge et la classe de r\u00e9sistance \u2014 la <a href=\"https:\/\/manufactorhinge.com\/fr\/products\/industrial-hinges\/heavy-duty-hinges\/\">gamme de charni\u00e8res \u00e0 usage intensif<\/a> est disponible en acier inoxydable pour les environnements corrosifs.<\/p>\n\n\n\n<h2 id=\"rfq-checklist-for-stainless-hinges\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"RFQ_checklist_for_stainless_hinges\"><\/span>Liste de contr\u00f4le pour les demandes de devis concernant les charni\u00e8res en acier inoxydable<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Lorsque vous demandez un devis, la d\u00e9termination de la nuance est plus rapide si vous pr\u00e9cisez l'environnement et le type de porte, et pas seulement \u201c inox \u201d. Copiez et compl\u00e9tez :<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>DEMANDE DE DEVIS POUR CHARNI\u00c8RES EN ACIER INOXYDABLE\n-------------------\nEnvironnement d'utilisation (int\u00e9rieur \/ ext\u00e9rieur \/ lavage \/ littoral \/ marin \/ chimique) :\nExposition au sel ou aux chlorures (aucune \/ occasionnelle \/ constante) :\nNuance requise ou recommand\u00e9e (304 \/ 316) :\nFinition (passiv\u00e9e \/ polie \/ bross\u00e9e) :\nMat\u00e9riau des fixations (adapt\u00e9 \u00e0 la nuance de la charni\u00e8re) :\nPoids de la porte :\nNombre de charni\u00e8res :\n\u00c9chantillon \/ essai au brouillard salin requis (oui \/ non) :<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Une fois que vous connaissez l'environnement, la porte et la charge, le choix du mod\u00e8le s'impose de lui-m\u00eame. Indiquez-nous l'application \u2014 en int\u00e9rieur, en ext\u00e9rieur, en milieu soumis \u00e0 des lavages fr\u00e9quents, en zone c\u00f4ti\u00e8re, en milieu maritime ou en milieu chimique \u2014 et <a href=\"https:\/\/manufactorhinge.com\/fr\/contact-us\/\">notre \u00e9quipe d'ing\u00e9nieurs<\/a> peut vous indiquer si le 304 ou le 316 convient et quel mod\u00e8le choisir.<\/p>\n\n\n\n<h2 id=\"faq\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"FAQ\"><\/span>FAQ<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1782700010001\"><strong class=\"schema-faq-question\">Quelle est la diff\u00e9rence entre les charni\u00e8res en SUS 304 et celles en SUS 316 ?<\/strong> <p class=\"schema-faq-answer\">Ces deux aciers inoxydables aust\u00e9nitiques r\u00e9sistent \u00e0 la corrosion, mais le 316 contient environ 2 \u00e0 3% de molybd\u00e8ne, ce qui am\u00e9liore consid\u00e9rablement sa r\u00e9sistance \u00e0 la corrosion par piq\u00fbres et \u00e0 la corrosion interstitielle provoqu\u00e9e par les chlorures. Dans des environnements secs ou exempts de chlorures, leurs performances sont similaires et le 304 constitue le choix le plus \u00e9conomique ; \u00e0 proximit\u00e9 du sel ou de produits chimiques, le 316 r\u00e9siste l\u00e0 o\u00f9 le 304 se piquette.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1782700010002\"><strong class=\"schema-faq-question\">Dans quels cas vaut-il mieux choisir l'acier 316 plut\u00f4t que l'acier 304 pour une charni\u00e8re ?<\/strong> <p class=\"schema-faq-answer\">Optez pour l'acier 316 en cas de pr\u00e9sence de chlorures : sites c\u00f4tiers ou proches du littoral, \u00e9quipements maritimes et utilis\u00e9s sur l'eau, sel de voirie ou de d\u00e9neigement, environnements de piscines et nombreux produits chimiques industriels. Pour les environnements int\u00e9rieurs secs, les environnements ext\u00e9rieurs g\u00e9n\u00e9raux et la plupart des applications n\u00e9cessitant un lavage \u00e0 haute pression, l'acier 304 est suffisant et plus \u00e9conomique.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1782700010003\"><strong class=\"schema-faq-question\">L'acier inoxydable 316 est-il toujours meilleur que le 304 ?<\/strong> <p class=\"schema-faq-answer\">Pas toujours : le 316 r\u00e9siste mieux aux chlorures, mais il co\u00fbte plus cher, et dans les environnements exempts de chlorures, le 304 offre des performances \u00e0 peu pr\u00e8s \u00e9quivalentes. Le choix appropri\u00e9 d\u00e9pend de l'environnement : le 304 par d\u00e9faut, le 316 en pr\u00e9sence de sel ou de produits chimiques agressifs. Opter pour le 316 alors que le 304 suffirait revient \u00e0 d\u00e9penser inutilement, et non \u00e0 b\u00e9n\u00e9ficier d'une am\u00e9lioration.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1782700010004\"><strong class=\"schema-faq-question\">Quelle nuance d'acier inoxydable est la mieux adapt\u00e9e aux charni\u00e8res destin\u00e9es \u00e0 un usage maritime ou c\u00f4tier ?<\/strong> <p class=\"schema-faq-answer\">316. L'exposition prolong\u00e9e au brouillard salin et \u00e0 l'air c\u00f4tier charg\u00e9 en chlorures provoque une corrosion par piq\u00fbres (304) au fil du temps, en particulier dans les interstices \u00e9troits autour de l'axe de charni\u00e8re et des vantaux. Le molybd\u00e8ne pr\u00e9sent dans l'alliage 316 r\u00e9siste \u00e0 cette corrosion par piq\u00fbres et \u00e0 la corrosion caverneuse, ce qui en fait la nuance standard pour les applications de charni\u00e8res en milieu marin et c\u00f4tier.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1782700010005\"><strong class=\"schema-faq-question\">Les charni\u00e8res en acier inoxydable 304 risquent-elles de rouiller \u00e0 l'ext\u00e9rieur ?<\/strong> <p class=\"schema-faq-answer\">Les charni\u00e8res en acier inoxydable 304 r\u00e9sistent g\u00e9n\u00e9ralement bien aux intemp\u00e9ries en ext\u00e9rieur. Elles peuvent toutefois pr\u00e9senter des taches de rouille ou des piq\u00fbres dans des environnements riches en chlorure, tels que l'air c\u00f4tier, le sel de d\u00e9neigement, l'atmosph\u00e8re des piscines ou les lavages \u00e0 grand renfort de produits chimiques \u2013 souvent d'abord au niveau des trous de vis et de la zone des goupilles, o\u00f9 l'humidit\u00e9 s'accumule dans les interstices.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1782700010006\"><strong class=\"schema-faq-question\">Les charni\u00e8res en acier inoxydable 316 peuvent-elles quand m\u00eame se corroder ?<\/strong> <p class=\"schema-faq-answer\">Oui. L'acier 316 r\u00e9siste bien mieux \u00e0 la corrosion par piq\u00fbres au chlorure que l'acier 304, mais il peut tout de m\u00eame se corroder si sa surface est contamin\u00e9e ou mal finie, si de l'eau de mer reste emprisonn\u00e9e dans une fissure, ou s'il est associ\u00e9 \u00e0 des fixations incompatibles dans un assemblage expos\u00e9 \u00e0 l'humidit\u00e9. Il est plus r\u00e9sistant, mais pas inoxydable.<\/p> <\/div> <\/div>","protected":false},"excerpt":{"rendered":"<p>Choose SUS 304 stainless for general outdoor, washdown, and food-industry hinges, and step up to SUS 316 when chlorides are present \u2014 coastal sites, marine equipment, de-icing salt, and many chemical environments \u2014 because 316&#8217;s added molybdenum is what resists the pitting that 304 cannot. Both grades are corrosion-resistant stainless steels and look identical; the [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3962,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_gspb_post_css":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-3961","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"blocksy_meta":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>SUS 304 vs SUS 316 Hinges | Stainless Grade Guide - HSP Industrial Hinges<\/title>\n<meta name=\"description\" content=\"Compare SUS 304 and SUS 316 stainless steel hinges by corrosion resistance, chloride exposure, coastal and marine use, washdown, finish, and cost.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/manufactorhinge.com\/fr\/sus-304-vs-sus-316-stainless-steel-hinges\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"SUS 304 vs SUS 316 Hinges | Stainless Grade Guide - 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In dry or chloride-free settings they perform similarly and 304 is the lower-cost choice; near salt or chemicals, 316 lasts where 304 pits.\",\"inLanguage\":\"fr-FR\"},\"inLanguage\":\"fr-FR\"},{\"@type\":\"Question\",\"@id\":\"https:\/\/manufactorhinge.com\/sus-304-vs-sus-316-stainless-steel-hinges\/#faq-question-1782700010002\",\"position\":2,\"url\":\"https:\/\/manufactorhinge.com\/sus-304-vs-sus-316-stainless-steel-hinges\/#faq-question-1782700010002\",\"name\":\"When should I choose 316 instead of 304 for a hinge?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Choose 316 when chlorides are present - coastal or near-shore sites, marine and on-water equipment, road or de-icing salt, swimming-pool atmospheres, and many process chemicals. 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Paying for 316 where 304 would do is overspending, not an upgrade.\",\"inLanguage\":\"fr-FR\"},\"inLanguage\":\"fr-FR\"},{\"@type\":\"Question\",\"@id\":\"https:\/\/manufactorhinge.com\/sus-304-vs-sus-316-stainless-steel-hinges\/#faq-question-1782700010004\",\"position\":4,\"url\":\"https:\/\/manufactorhinge.com\/sus-304-vs-sus-316-stainless-steel-hinges\/#faq-question-1782700010004\",\"name\":\"Which stainless grade is best for marine or coastal hinges?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"316. Direct salt spray and chloride-laden coastal air pit 304 over time, especially in the tight crevices around a hinge pin and leaves. The molybdenum in 316 resists that pitting and crevice corrosion, making it the standard grade for marine and coastal hinge applications.\",\"inLanguage\":\"fr-FR\"},\"inLanguage\":\"fr-FR\"},{\"@type\":\"Question\",\"@id\":\"https:\/\/manufactorhinge.com\/sus-304-vs-sus-316-stainless-steel-hinges\/#faq-question-1782700010005\",\"position\":5,\"url\":\"https:\/\/manufactorhinge.com\/sus-304-vs-sus-316-stainless-steel-hinges\/#faq-question-1782700010005\",\"name\":\"Will 304 stainless hinges rust outdoors?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"304 stainless hinges usually perform well in general outdoor weather. 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In dry or chloride-free settings they perform similarly and 304 is the lower-cost choice; near salt or chemicals, 316 lasts where 304 pits.","inLanguage":"fr-FR"},"inLanguage":"fr-FR"},{"@type":"Question","@id":"https:\/\/manufactorhinge.com\/sus-304-vs-sus-316-stainless-steel-hinges\/#faq-question-1782700010002","position":2,"url":"https:\/\/manufactorhinge.com\/sus-304-vs-sus-316-stainless-steel-hinges\/#faq-question-1782700010002","name":"Dans quels cas vaut-il mieux choisir l'acier 316 plut\u00f4t que l'acier 304 pour une charni\u00e8re ?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Choose 316 when chlorides are present - coastal or near-shore sites, marine and on-water equipment, road or de-icing salt, swimming-pool atmospheres, and many process chemicals. For dry indoor, general outdoor, and most washdown use, 304 is sufficient and more economical.","inLanguage":"fr-FR"},"inLanguage":"fr-FR"},{"@type":"Question","@id":"https:\/\/manufactorhinge.com\/sus-304-vs-sus-316-stainless-steel-hinges\/#faq-question-1782700010003","position":3,"url":"https:\/\/manufactorhinge.com\/sus-304-vs-sus-316-stainless-steel-hinges\/#faq-question-1782700010003","name":"L'acier inoxydable 316 est-il toujours meilleur que le 304 ?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Not always - 316 resists chlorides better, but it costs more, and in chloride-free environments 304 performs about the same. The right choice is by environment: 304 by default, 316 where salt or aggressive chemicals are present. Paying for 316 where 304 would do is overspending, not an upgrade.","inLanguage":"fr-FR"},"inLanguage":"fr-FR"},{"@type":"Question","@id":"https:\/\/manufactorhinge.com\/sus-304-vs-sus-316-stainless-steel-hinges\/#faq-question-1782700010004","position":4,"url":"https:\/\/manufactorhinge.com\/sus-304-vs-sus-316-stainless-steel-hinges\/#faq-question-1782700010004","name":"Quelle nuance d'acier inoxydable est la mieux adapt\u00e9e aux charni\u00e8res destin\u00e9es \u00e0 un usage maritime ou c\u00f4tier ?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"316. Direct salt spray and chloride-laden coastal air pit 304 over time, especially in the tight crevices around a hinge pin and leaves. The molybdenum in 316 resists that pitting and crevice corrosion, making it the standard grade for marine and coastal hinge applications.","inLanguage":"fr-FR"},"inLanguage":"fr-FR"},{"@type":"Question","@id":"https:\/\/manufactorhinge.com\/sus-304-vs-sus-316-stainless-steel-hinges\/#faq-question-1782700010005","position":5,"url":"https:\/\/manufactorhinge.com\/sus-304-vs-sus-316-stainless-steel-hinges\/#faq-question-1782700010005","name":"Les charni\u00e8res en acier inoxydable 304 risquent-elles de rouiller \u00e0 l'ext\u00e9rieur ?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"304 stainless hinges usually perform well in general outdoor weather. They can show rust staining or pitting in chloride-rich environments such as coastal air, road salt, pool atmospheres, or chemical washdown - often first at the screw holes and pin area, where crevices trap moisture.","inLanguage":"fr-FR"},"inLanguage":"fr-FR"},{"@type":"Question","@id":"https:\/\/manufactorhinge.com\/sus-304-vs-sus-316-stainless-steel-hinges\/#faq-question-1782700010006","position":6,"url":"https:\/\/manufactorhinge.com\/sus-304-vs-sus-316-stainless-steel-hinges\/#faq-question-1782700010006","name":"Les charni\u00e8res en acier inoxydable 316 peuvent-elles quand m\u00eame se corroder ?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Yes. 316 resists chloride pitting far better than 304, but it can still corrode if the surface is contaminated or poorly finished, if saltwater stays trapped in a crevice, or if it is paired with incompatible fasteners in a wet joint. It is more resistant, not rust-proof.","inLanguage":"fr-FR"},"inLanguage":"fr-FR"}]}},"acf":[],"_links":{"self":[{"href":"https:\/\/manufactorhinge.com\/fr\/wp-json\/wp\/v2\/posts\/3961","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/manufactorhinge.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/manufactorhinge.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/manufactorhinge.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/manufactorhinge.com\/fr\/wp-json\/wp\/v2\/comments?post=3961"}],"version-history":[{"count":1,"href":"https:\/\/manufactorhinge.com\/fr\/wp-json\/wp\/v2\/posts\/3961\/revisions"}],"predecessor-version":[{"id":3963,"href":"https:\/\/manufactorhinge.com\/fr\/wp-json\/wp\/v2\/posts\/3961\/revisions\/3963"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/manufactorhinge.com\/fr\/wp-json\/wp\/v2\/media\/3962"}],"wp:attachment":[{"href":"https:\/\/manufactorhinge.com\/fr\/wp-json\/wp\/v2\/media?parent=3961"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/manufactorhinge.com\/fr\/wp-json\/wp\/v2\/categories?post=3961"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/manufactorhinge.com\/fr\/wp-json\/wp\/v2\/tags?post=3961"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}