{"id":546,"date":"2025-06-16T08:04:03","date_gmt":"2025-06-16T08:04:03","guid":{"rendered":"https:\/\/dura-alloy.com\/?post_type=product&p=546"},"modified":"2025-06-16T08:04:03","modified_gmt":"2025-06-16T08:04:03","slug":"c4-nitric-acid-resistant-stainless-steel","status":"publish","type":"product","link":"https:\/\/www.dura-alloy.com\/fr\/produit\/c4-nitric-acid-resistant-stainless-steel\/","title":{"rendered":"Acier inoxydable r\u00e9sistant \u00e0 l'acide nitrique C4"},"content":{"rendered":"

L'offre de notre soci\u00e9t\u00e9 comprend<\/span><\/strong><\/p>\n

Pi\u00e8ces forg\u00e9es non standard, barres rondes, plaques\/ceintures en acier, raccords de tuyauterie \u00e0 bride, tuyaux sans soudure, capillaires, etc. N'h\u00e9sitez pas \u00e0 vous renseigner !<\/span><\/strong><\/p>\n

1.<\/span><\/strong>\u00a0Introduction au C4\u00a0<\/span>Mat\u00e9riaux<\/span><\/strong><\/p>\n

\u00a0 \u00a0 \u00a0 La nuance correspondante de l'acier inoxydable C4 est 00Cr14Ni14Si4. Il s'agit d'un acier inoxydable aust\u00e9nitique \u00e0 tr\u00e8s faible teneur en carbone et \u00e0 haute teneur en silicium, tr\u00e8s r\u00e9sistant aux acides et pr\u00e9sentant une excellente r\u00e9sistance \u00e0 la corrosion dans les milieux fortement oxydants, bien sup\u00e9rieure \u00e0 l'acier inoxydable g\u00e9n\u00e9ral (tel que 304, 316L, 321, etc.). Par rapport au ferrosilicium de haute puret\u00e9 et \u00e0 l'aluminium de haute puret\u00e9, sa r\u00e9sistance \u00e0 la corrosion est meilleure que celle de l'aluminium de haute puret\u00e9 et similaire \u00e0 celle du ferrosilicium de haute puret\u00e9, mais sa r\u00e9sistance m\u00e9canique et ses performances d'usinage sont incomparables \u00e0 celles de l'aluminium de haute puret\u00e9 et du ferrosilicium de haute puret\u00e9. Par cons\u00e9quent, l'acier C4 est actuellement reconnu comme le mat\u00e9riau pr\u00e9sentant les meilleures performances globales parmi les mat\u00e9riaux m\u00e9diatiques, en particulier l'acide nitrique concentr\u00e9.<\/span><\/p>\n

\u00a0 \u00a0 \u00a0 L'acier C4 a remport\u00e9 le premier prix des progr\u00e8s scientifiques et technologiques du minist\u00e8re de l'armement. Il est similaire \u00e0 l'Uranuss Durcomet5, \u00e0 l'ancien Zu654^ de l'Union sovi\u00e9tique, au VEWA611 allemand, \u00e0 l'Uranuss fran\u00e7ais et \u00e0 d'autres Uranuss. En 1984, il a \u00e9t\u00e9 inclus dans la norme nationale GB2100-80, et son nom de code \u00e9tait 300.<\/span><\/p>\n

2. Composition chimique du C4<\/span><\/strong><\/p>\n\n\n\n\n\n
alliage<\/span><\/td>\n%<\/td>\nC<\/td>\nEt<\/span><\/td>\nMn<\/td>\nP<\/td>\nS<\/td>\nEn<\/span><\/td>\nCr<\/td>\n<\/tr>\n
C4\uff0800Cr14Ni14Si4\uff09<\/td>\nValeur minimale<\/span><\/td>\n-<\/td>\n3.0<\/td>\n-<\/span><\/td>\n-<\/span><\/td>\n-<\/span><\/td>\n13.0<\/td>\n13.0<\/span><\/td>\n<\/tr>\n
Valeur maximale<\/span><\/td>\n0.03<\/td>\n5.0<\/td>\n1.0<\/td>\n0.035<\/td>\n0.030<\/td>\n15.0<\/td>\n15.0<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

3.<\/span><\/strong>\u00a0C4\u00a0<\/span>caract\u00e9ristiques des mat\u00e9riaux<\/span><\/strong><\/p>\n

\u00a0 \u00a0 \u00a0 Le C4 (00Cr14Ni14Si4) est un acier inoxydable \u00e0 haute teneur en silicium et \u00e0 tr\u00e8s faible teneur en carbone, id\u00e9al pour r\u00e9sister \u00e0 l'acide nitrique. Il est particuli\u00e8rement adapt\u00e9 \u00e0 une utilisation en milieu acide nitrique concentr\u00e9 et r\u00e9siste \u00e9galement \u00e0 la corrosion de divers acides nitriques concentr\u00e9s m\u00e9lang\u00e9s. Il poss\u00e8de d'excellentes propri\u00e9t\u00e9s m\u00e9caniques et les propri\u00e9t\u00e9s de traitement de l'acier inoxydable aust\u00e9nitique, une bonne performance de soudage, aucun pr\u00e9chauffage avant le soudage, et ses joints soud\u00e9s ont des propri\u00e9t\u00e9s m\u00e9caniques et une r\u00e9sistance \u00e0 la corrosion comparables \u00e0 celles du mat\u00e9riau de base.<\/span><\/p>\n

\u00a0 \u00a0 \u00a0 C4 traitement thermique : La coul\u00e9e est chauff\u00e9e \u00e0 1050\u2103, puis chauff\u00e9e dans l'eau et refroidie, puis un traitement en solution solide est effectu\u00e9 pour obtenir la meilleure r\u00e9sistance \u00e0 la corrosion.<\/span>
\nSoudage : Il pr\u00e9sente de bonnes performances de soudage. Le soudage \u00e0 l'arc manuel est utilis\u00e9 avec une baguette de soudage au silicium Ao 0,12. Les pi\u00e8ces moul\u00e9es doivent \u00eatre soumises \u00e0 une solution solide apr\u00e8s le soudage.<\/span>
\nR\u00e9sistance \u00e0 la corrosion : L'acier C4 est un mat\u00e9riau fortement oxydant. Il peut r\u00e9sister \u00e0 la pleine concentration d'acide nitrique \u00e0 temp\u00e9rature ambiante. Il pr\u00e9sente \u00e9galement une excellente r\u00e9sistance \u00e0 la corrosion dans l'acide chromique et est \u00e9galement meilleur que l'acier inoxydable de type 18-8 dans d'autres milieux corrosifs.<\/span><\/p>\n

C4\u00a0<\/span><\/strong>L'acier pr\u00e9sente les avantages suivants :<\/span><\/strong><\/p>\n

    \n
  • \u00a0 \u00a0 \u00a0 Il n'y a pas de corrosion des fraises apr\u00e8s le soudage, et il pr\u00e9sente une bonne r\u00e9sistance \u00e0 la corrosion des petits trous et une excellente r\u00e9sistance \u00e0 la corrosion sous contrainte ;<\/span><\/li>\n
  • \u00a0 \u00a0 \u00a0 Le plastique en acier C4 a une bonne t\u00e9nacit\u00e9, ce qui augmente la s\u00e9curit\u00e9 et la fiabilit\u00e9, et \u00e9vite le danger d'incendie et d'explosion du titane pur industriel dans l'acide nitrique fum\u00e9 ;<\/span><\/li>\n
  • \u00a0 \u00a0 \u00a0 La r\u00e9sistance \u00e0 la corrosion de l'acier C4 est bien sup\u00e9rieure \u00e0 celle de l'aluminium de haute puret\u00e9, et ses propri\u00e9t\u00e9s m\u00e9caniques sont incomparables \u00e0 celles de la fonte \u00e0 haute teneur en silicium. Ses joints soud\u00e9s ont des propri\u00e9t\u00e9s m\u00e9caniques et une r\u00e9sistance \u00e0 la corrosion comparables \u00e0 celles du mat\u00e9riau de base.<\/span><\/li>\n<\/ul>\n

    \u00a0<\/strong>4. Champs d'application du C4<\/span><\/strong><\/p>\n

      \n
    1. L'acier C4 est utilis\u00e9 dans l'\u00e9quipement de concentration de l'acide nitrique par m\u00e9thode indirecte (m\u00e9thode du nitrate de magn\u00e9sium) avec de tr\u00e8s bons r\u00e9sultats.<\/span><\/li>\n
    2. L'acier C4 est un acier inoxydable aust\u00e9nitique \u00e0 tr\u00e8s faible teneur en carbone : 00Cr14Ni14Si4 acier inoxydable aust\u00e9nitique \u00e0 tr\u00e8s faible teneur en carbone, pr\u00e9sentant une excellente r\u00e9sistance \u00e0 la corrosion intergranulaire et \u00e0 la corrosion sous contrainte.<\/span><\/li>\n<\/ol>","protected":false},"excerpt":{"rendered":"

      Our company’s scope of supply includes Non-standard forgings, round rods, steel plates\/steel belts, flange pipe fittings, seamless pipes, capillaries, etc. […]<\/p>","protected":false},"featured_media":547,"template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}}},"product_brand":[],"product_cat":[30],"product_tag":[],"class_list":{"0":"post-546","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-advanced-stainless-steel","7":"desktop-align-left","8":"tablet-align-left","9":"mobile-align-left","11":"first","12":"instock","13":"shipping-taxable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/www.dura-alloy.com\/fr\/wp-json\/wp\/v2\/product\/546","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.dura-alloy.com\/fr\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.dura-alloy.com\/fr\/wp-json\/wp\/v2\/types\/product"}],"version-history":[{"count":0,"href":"https:\/\/www.dura-alloy.com\/fr\/wp-json\/wp\/v2\/product\/546\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.dura-alloy.com\/fr\/wp-json\/wp\/v2\/media\/547"}],"wp:attachment":[{"href":"https:\/\/www.dura-alloy.com\/fr\/wp-json\/wp\/v2\/media?parent=546"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.dura-alloy.com\/fr\/wp-json\/wp\/v2\/product_brand?post=546"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.dura-alloy.com\/fr\/wp-json\/wp\/v2\/product_cat?post=546"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.dura-alloy.com\/fr\/wp-json\/wp\/v2\/product_tag?post=546"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}