{"id":4506,"date":"2026-06-23T14:12:33","date_gmt":"2026-06-23T14:12:33","guid":{"rendered":"https:\/\/beiyutitanium.com\/grade-12-titanium-ti-0-3mo-0-8ni-uns-r53400\/"},"modified":"2026-08-19T03:29:00","modified_gmt":"2026-08-19T03:29:00","slug":"grade-12-titanium-ti-0-3mo-0-8ni-uns-r53400","status":"publish","type":"post","link":"https:\/\/beiyutitanium.com\/fr\/grade-12-titanium-ti-0-3mo-0-8ni-uns-r53400\/","title":{"rendered":"Titane Grade 12 (Ti-0.3Mo-0.8Ni, UNS R53400) : propri\u00e9t\u00e9s, corrosion caverneuse et quand l'utiliser"},"content":{"rendered":"

<\/p>\n

Le titane Grade 12 est Ti-0.3Mo-0.8Ni, UNS R53400, Werkstoff 3.7105. ASTM B265 sp\u00e9cifie 0.2 \u00e0 0.4 wt% de molybd\u00e8ne avec 0.6 \u00e0 0.9 wt% de nickel, offrant environ 483 MPa de r\u00e9sistance \u00e0 la traction minimale et un seuil de corrosion caverneuse plus \u00e9lev\u00e9 que Grade 2 dans la saumure chaude, \u00e0 un co\u00fbt inf\u00e9rieur \u00e0 celui des nuances au palladium.<\/p>\n

<\/p>\n

Le titane Grade 12 est la nuance d'am\u00e9lioration anticorrosion. C'est du titane commercialement pur avec de faibles ajouts de molybd\u00e8ne et de nickel qui am\u00e9liorent la r\u00e9sistance \u00e0 la corrosion caverneuse en pr\u00e9sence de chlorures et de saumures chauds, \u00e0 un co\u00fbt inf\u00e9rieur \u00e0 celui des nuances au palladium. Cette page pr\u00e9sente ce qu'est le Grade 12, ses performances, sa comparaison avec le Grade 2 et le Grade 7, et quand le sp\u00e9cifier.<\/p>\n

<\/p>\n

D\u00e9signation europ\u00e9enne :<\/strong> Dans le syst\u00e8me EN et DIN, il s'agit de Werkstoff 3.7105 (Ti-0.3Mo-0.8Ni); selon ASTM, il s'agit d'UNS R53400 (Grade 12).<\/p>\n

Ce qu'est le titane Grade 12<\/h2>\n

Le Grade 12 est l'alliage Ti-0.3Mo-0.8Ni, UNS R53400 : du titane avec environ 0,3 % de molybd\u00e8ne et 0,8 % de nickel. Ces ajouts augmentent la r\u00e9sistance \u00e0 la corrosion caverneuse et \u00e0 haute temp\u00e9rature par rapport au titane CP tout en gardant le m\u00e9tal soudable et formable. Beiyu Titanium fournit le Grade 12 en t\u00f4le, plaque, tube et barre selon les normes ASTM, avec un certificat mati\u00e8re de r\u00e9ception 3.1 selon EN 10204 et une tra\u00e7abilit\u00e9 par num\u00e9ro de coul\u00e9e sur la commande.<\/p>\n\n\n\n\n\n\n\n\n\n\n
Champ<\/th>\nValeur indiqu\u00e9e par le guide<\/th>\n<\/tr>\n<\/thead>\n
Alliage<\/td>\nTi-0.3Mo-0.8Ni<\/td>\n<\/tr>\n
UNS<\/td>\nR53400<\/td>\n<\/tr>\n
Molybd\u00e8ne<\/td>\n0.2 \u00e0 0.4 pour cent, selon le tableau 1 d'ASTM B265<\/td>\n<\/tr>\n
Nickel<\/td>\n0.6 \u00e0 0.9 pour cent, selon le tableau 1 d'ASTM B265<\/td>\n<\/tr>\n
R\u00e9sistance \u00e0 la traction minimale, recuit<\/td>\n483 MPa (70 ksi), selon le tableau 2 d'ASTM B265<\/td>\n<\/tr>\n
Limite d'\u00e9lasticit\u00e9 minimale, recuit<\/td>\n345 MPa, selon le tableau 2 d'ASTM B265<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Propri\u00e9t\u00e9s m\u00e9caniques<\/h2>\n

\u00c0 l'\u00e9tat recuit, le Grade 12 pr\u00e9sente une r\u00e9sistance \u00e0 la traction minimale ASTM proche de 483 MPa (70 ksi) et une limite d'\u00e9lasticit\u00e9 proche de 345 MPa (50 ksi), avec un allongement d'environ 18 %. Il est plus r\u00e9sistant que le Grade 2 tout en conservant un comportement au formage similaire. Les valeurs r\u00e9elles sont confirm\u00e9es par coul\u00e9e sur le certificat de r\u00e9ception 3.1 selon EN 10204.<\/p>\n\n\n\n\n\n\n\n\n
Propri\u00e9t\u00e9<\/th>\nGrade 12 (Ti-0.3Mo-0.8Ni, R53400)<\/th>\n<\/tr>\n<\/thead>\n
R\u00e9sistance \u00e0 la traction (min, recuit)<\/td>\n483 MPa \/ 70 ksi<\/td>\n<\/tr>\n
Limite d'\u00e9lasticit\u00e9 (min, recuit)<\/td>\n345 MPa \/ 50 ksi<\/td>\n<\/tr>\n
Allongement (min)<\/td>\n18 %<\/td>\n<\/tr>\n
Caract\u00e9ristique cl\u00e9<\/td>\nr\u00e9sistance \u00e0 la corrosion caverneuse en pr\u00e9sence de chlorures et de saumures chauds<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

R\u00e9sistance \u00e0 la corrosion<\/h2>\n

La corrosion caverneuse est la raison d'achat du Grade 12. Le Grade 2 CP peut subir une attaque caverneuse dans des solutions chlorur\u00e9es concentr\u00e9es et chaudes ; le molybd\u00e8ne et le nickel du Grade 12 repoussent cette limite plus haut, de sorte qu'il tient dans des saumures et des flux de proc\u00e9d\u00e9 plus chauds. Il conserve la r\u00e9sistance g\u00e9n\u00e9rale \u00e0 la corrosion du titane en milieux oxydants et neutres. Pour les acides fortement r\u00e9ducteurs, le palladium du Grade 7 reste la meilleure r\u00e9ponse.<\/p>\n

Grade 12 ou Grade 2<\/h2>\n

Le Grade 2 est la r\u00e9f\u00e9rence anticorrosion pour un service ambiant et mod\u00e9r\u00e9ment chaud, et il est moins cher. Le Grade 12 est l'am\u00e9lioration lorsque le m\u00eame chlorure ou la m\u00eame saumure devient assez chaud pour risquer une attaque caverneuse sur le Grade 2. Sp\u00e9cifier le Grade 12 plut\u00f4t que le Grade 2 lorsque la temp\u00e9rature et la concentration en chlorures augmentent ; conserver le Grade 2 lorsque le service reste dans ses limites.<\/p>\n\n\n\n\n\n\n
Compar\u00e9 \u00e0<\/th>\nCe que le guide indique<\/th>\n<\/tr>\n<\/thead>\n
Grade 2<\/td>\nGrade 2 est la nuance de r\u00e9f\u00e9rence pour la corrosion en service \u00e0 temp\u00e9rature ambiante et mod\u00e9r\u00e9ment chaude, et elle est moins co\u00fbteuse. Grade 12 constitue l'am\u00e9lioration lorsque le m\u00eame service aux chlorures ou \u00e0 la saumure devient suffisamment chaud pour risquer une attaque caverneuse sur Grade 2<\/td>\n<\/tr>\n
Grade 7<\/td>\nGrade 7 ajoute 0,15 pour cent de palladium pour la meilleure r\u00e9sistance aux acides r\u00e9ducteurs et \u00e0 la corrosion caverneuse, et il co\u00fbte davantage en raison du palladium. Grade 12 atteint une partie de cette r\u00e9sistance \u00e0 la corrosion caverneuse gr\u00e2ce au molybd\u00e8ne et au nickel \u00e0 un co\u00fbt inf\u00e9rieur<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Grade 12 ou Grade 7<\/h2>\n

Le Grade 7 ajoute 0,15 % de palladium pour la meilleure r\u00e9sistance aux acides r\u00e9ducteurs et \u00e0 la corrosion caverneuse, et co\u00fbte plus cher en raison du palladium. Le Grade 12 atteint une partie de cette r\u00e9sistance caverneuse gr\u00e2ce au molybd\u00e8ne et au nickel \u00e0 moindre co\u00fbt. Pour un service en saumure et chlorures chauds avec un budget limit\u00e9, le Grade 12 est le choix pratique ; pour les acides r\u00e9ducteurs agressifs, le Grade 7 justifie son co\u00fbt plus \u00e9lev\u00e9.<\/p>\n

Applications typiques<\/h2>\n

Le Grade 12 est sp\u00e9cifi\u00e9 pour les \u00e9changeurs de chaleur, les condenseurs et les \u00e9quipements de proc\u00e9d\u00e9 en service chlorur\u00e9 ou en saumure chauds : traitement chimique, installations g\u00e9othermiques, autoclaves d'hydrom\u00e9tallurgie et syst\u00e8mes en eau de mer o\u00f9 le Grade 2 risquerait la corrosion caverneuse. Il est choisi pour sa performance anticorrosion en temp\u00e9rature, pas pour sa r\u00e9sistance m\u00e9canique.<\/p>\n\n\n\n\n\n\n
L\u00e0 o\u00f9 le guide indique qu'elle est sp\u00e9cifi\u00e9e<\/th>\nD\u00e9tail<\/th>\n<\/tr>\n<\/thead>\n
\u00c9changeurs de chaleur, condenseurs et \u00e9quipements de proc\u00e9d\u00e9<\/td>\nEn service chaud aux chlorures ou \u00e0 la saumure<\/td>\n<\/tr>\n
Traitement chimique, installation g\u00e9othermique, autoclaves d'hydrom\u00e9tallurgie et syst\u00e8mes d'eau de mer<\/td>\nLorsque Grade 2 risquerait la corrosion caverneuse<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Formes et normes<\/h2>\n

Beiyu fournit le Grade 12 en t\u00f4le et plaque selon ASTM B265, en tube selon ASTM B338, et en barre selon ASTM B348. Associer la nuance \u00e0 la forme dans la demande : \u00e9paisseur ou diam\u00e8tre ext\u00e9rieur et \u00e9paisseur de paroi, largeur ou longueur, \u00e9tat de surface, et \u00e9tendue des certificats. Pour le tube utilis\u00e9 dans les \u00e9changeurs de chaleur, voir le gamme de tubes en titane<\/a>.<\/p>\n\n\n\n\n\n\n\n
Forme<\/th>\nNorme cit\u00e9e par le guide<\/th>\n<\/tr>\n<\/thead>\n
T\u00f4le et plaque<\/td>\nASTM B265<\/td>\n<\/tr>\n
Tube<\/td>\nASTM B338<\/td>\n<\/tr>\n
Barre<\/td>\nASTM B348<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Co\u00fbt et comment le sp\u00e9cifier<\/h2>\n

Grade 12 co\u00fbte l\u00e9g\u00e8rement plus que Grade 2 en raison des ajouts d'alliage, et moins que le Grade 7 contenant du palladium. Pour obtenir une offre pr\u00e9cise, indiquez la nuance, la norme, les dimensions, l'\u00e9tat et le p\u00e9rim\u00e8tre du certificat. Le mat\u00e9riau est fourni avec un certificat de r\u00e9ception 3.1 selon EN 10204 et une tra\u00e7abilit\u00e9 par num\u00e9ro de coul\u00e9e selon le p\u00e9rim\u00e8tre de la commande.<\/p>\n

Questions courantes<\/h2>\n

\u00c0 quoi sert le titane Grade 12 ?<\/strong> \u00c9changeurs de chaleur et \u00e9quipements de proc\u00e9d\u00e9 en service dans des chlorures chauds ou des saumures, o\u00f9 le Grade 2 CP pr\u00e9sente un risque de corrosion caverneuse.<\/p>\n

Grade 12 est-il plus r\u00e9sistant que Grade 2 ?<\/strong> Oui, modestement : environ 483 MPa de r\u00e9sistance \u00e0 la traction minimale contre 345 MPa pour Grade 2, avec une aptitude au formage similaire.<\/p>\n

Grade 12 ou Grade 7 pour la corrosion caverneuse ?<\/strong> Grade 12 convient aux saumures chaudes et aux applications en interstice chlorur\u00e9e \u00e0 moindre co\u00fbt ; Grade 7 est plus adapt\u00e9 aux acides r\u00e9ducteurs forts et co\u00fbte davantage.<\/p>\n

Quelles normes couvrent Grade 12 ?<\/strong> ASTM B265 pour la t\u00f4le et la plaque, B338 pour le tube et B348 pour la barre.<\/p>\n

Beiyu Titanium est la marque internationale d'exportation de titane de Jiaxing Beiyu New Materials Technology Co., Ltd., fournisseur et exportateur de titane & avec une production directe \u00e0 Baoji, Shaanxi. Pour une offre de titane Grade 12 avec un certificat de r\u00e9ception 3.1 selon EN 10204, envoyez la forme, les dimensions et la norme \u00e0 penn@beiyutitanium.com. Pour comparer d'abord les nuances, consultez le guide de comparaison des nuances de titane<\/a> et le page sur le titane Grade 7<\/a>.<\/p>\n

<\/p>\n

Ce qu'il faut indiquer lors de la commande de Grade 12<\/h2>\n

Grade 12 est command\u00e9 moins souvent que Grade 2, de sorte que moins d'acheteurs disposent d'un mod\u00e8le interne pour cette nuance et que les champs laiss\u00e9s vides sont pr\u00e9visibles. L'alliage est d\u00e9fini par de faibles ajouts d\u00e9lib\u00e9r\u00e9s, molybd\u00e8ne 0.2 \u00e0 0.4 pour cent et nickel 0.6 \u00e0 0.9 pour cent, avec un maximum de 0.25 pour cent d'oxyg\u00e8ne et de 0.30 pour cent de fer pour les barres (ASTM B348, exigences chimiques). Il s'agit de limites d'analyse de coul\u00e9e, ce qui importe lorsqu'une analyse de produit ult\u00e9rieure leur est compar\u00e9e.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n
Ligne sur la commande<\/th>\nSp\u00e9cificit\u00e9s de Grade 12<\/th>\n<\/tr>\n<\/thead>\n
Nuance et UNS<\/td>\nGrade 12, UNS R53400, indiqu\u00e9s ensemble afin que l'alliage ne soit pas interpr\u00e9t\u00e9 comme du titane non alli\u00e9<\/td>\n<\/tr>\n
Classification du produit<\/td>\nBarre ou billette, ce qui d\u00e9termine l'ensemble d'exigences applicable<\/td>\n<\/tr>\n
Norme applicable<\/td>\nD\u00e9sign\u00e9e \u00e0 c\u00f4t\u00e9 de la nuance, puisque la m\u00eame nuance figure dans plus d'une sp\u00e9cification de produit<\/td>\n<\/tr>\n
Exigences chimiques<\/td>\nSelon quelle table de composition l'analyse est d\u00e9clar\u00e9e<\/td>\n<\/tr>\n
Exigences m\u00e9caniques<\/td>\nQuels minimums de r\u00e9sistance et d'allongement sont indiqu\u00e9s<\/td>\n<\/tr>\n
\u00c9tat de surface<\/td>\nL'\u00e9tat de surface \u00e0 la livraison, indiqu\u00e9 s\u00e9par\u00e9ment de l'\u00e9tat m\u00e9tallurgique<\/td>\n<\/tr>\n
Rapports requis<\/td>\nLe p\u00e9rim\u00e8tre de rapport, au-del\u00e0 des r\u00e9sultats d\u00e9j\u00e0 exig\u00e9s par la sp\u00e9cification<\/td>\n<\/tr>\n
Sort des mat\u00e9riaux rejet\u00e9s<\/td>\nConvenus \u00e0 l'avance plut\u00f4t que n\u00e9goci\u00e9s apr\u00e8s un r\u00e9sultat<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Sept de ces lignes figurent parmi les \u00e9l\u00e9ments que la sp\u00e9cification des barres et billettes ASTM B348 pr\u00e9voit dans une commande, laquelle d\u00e9signe \u00e9galement le marquage et l'emballage que le tableau ci-dessus omet ; la norme applicable ne figure pas dans cette liste, et elle est incluse ici parce que la m\u00eame nuance appara\u00eet dans plus d'une sp\u00e9cification de produit (ASTM B348, informations de commande). Beiyu Titanium examine la combinaison command\u00e9e de nuance, norme, dimensions, tol\u00e9rance, \u00e9tat de surface et p\u00e9rim\u00e8tre de contr\u00f4le avant offre, de sorte qu'une demande qui les contient peut recevoir une r\u00e9ponse sans phase de clarification.<\/p>\n

D\u00e9tails des sp\u00e9cifications avec sources<\/h2>\n

Grade 12 (UNS R53400) ajoute 0.2 \u00e0 0.4% de molybd\u00e8ne et 0.6 \u00e0 0.9% de nickel au titane non alli\u00e9, selon ASTM B265, Tableau 1. Les ajouts portent les minimums \u00e0 l'\u00e9tat recuit \u00e0 483 MPa (70 ksi) en traction et \u00e0 une limite d'\u00e9lasticit\u00e9 de 345 MPa, selon ASTM B265, Tableau 2, contre 345 MPa et 275 MPa pour Grade 2.<\/p>\n

Les additions de Mo et de Ni visent la corrosion caverneuse en service chlorur\u00e9 chaud. Le document Corrosion Resistance of Titanium de TIMET rapporte que, dans des interstices \u00e9troits en saumure de chlorure de sodium satur\u00e9e et de pH proche du neutre, la corrosion caverneuse du titane non alli\u00e9 devient possible \u00e0 partir d'environ 93 \u00b0C (200 \u00b0F), alors qu'elle est peu probable en dessous de 70 \u00b0C (158 \u00b0F) ; un pH plus bas ou de fortes concentrations d'ions calcium ou magn\u00e9sium peuvent abaisser la temp\u00e9rature d'amor\u00e7age. Le Grade 12 a \u00e9t\u00e9 mis au point pour tenir la r\u00e9sistance au-del\u00e0 de cette fen\u00eatre tout en restant plus sobre que le Grade 7 au palladium.<\/p>\n

<\/p>","protected":false},"excerpt":{"rendered":"

Grade 12 titanium is Ti-0.3Mo-0.8Ni, UNS R53400, Werkstoff 3.7105. ASTM B265 specifies 0.2 to 0.4 wt% molybdenum with 0.6 to 0.9 wt% nickel, giving about 483 MPa minimum tensile strength and a higher crevice corrosion threshold than Grade 2 in hot brine, at lower cost than the palladium grades. Grade 12 titanium is the corrosion-upgrade […]<\/p>\n","protected":false},"author":2,"featured_media":4762,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_templately_pack_id":"","_templately_imported_at":"","_templately_source":"","_templately_import_session_id":"","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":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","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 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Ce travail reposait sur des plans de contr\u00f4le et d'essais, la certification des mat\u00e9riaux et la tra\u00e7abilit\u00e9 par num\u00e9ro de coul\u00e9e, la coordination du contr\u00f4le par tierce partie, ainsi que le contr\u00f4le de la documentation et des dossiers de projet. Ce sont les quatre m\u00eames \u00e9l\u00e9ments qu'un acheteur de l'industrie des proc\u00e9d\u00e9s ou un acheteur soumis \u00e0 r\u00e9glementation exigera d'un fournisseur de titane, et le fait d'avoir d\u00fb les faire appliquer en tant que client explique qu'ils soient trait\u00e9s ici comme faisant partie de la fourniture plut\u00f4t que comme des documents produits ult\u00e9rieurement. Son travail quotidien couvre les questions auxquelles ce site est destin\u00e9 \u00e0 r\u00e9pondre : choisir entre des nuances de titane commercialement pur et alli\u00e9 pour un service corrosif, lire un certificat mati\u00e8re par rapport \u00e0 la norme command\u00e9e, et faire correspondre la d\u00e9signation d'un acheteur (nuance ASTM, UNS, num\u00e9ro Werkstoff allemand ou code NF fran\u00e7ais) au m\u00eame m\u00e9tal sur diff\u00e9rents march\u00e9s. Beiyu fournit des produits d'usine en titane, alliages de nickel et m\u00e9taux r\u00e9fractaires, notamment des barres, tiges, plaques, tubes, blocs, anneaux, bobines, lingots, pi\u00e8ces forg\u00e9es et pi\u00e8ces usin\u00e9es, avec documentation EN 10204 3.1 et tra\u00e7abilit\u00e9 par num\u00e9ro de coul\u00e9e.","url":"https:\/\/beiyutitanium.com\/fr\/author\/penn-ma\/"}]}},"_links":{"self":[{"href":"https:\/\/beiyutitanium.com\/fr\/wp-json\/wp\/v2\/posts\/4506","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/beiyutitanium.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/beiyutitanium.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/beiyutitanium.com\/fr\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/beiyutitanium.com\/fr\/wp-json\/wp\/v2\/comments?post=4506"}],"version-history":[{"count":8,"href":"https:\/\/beiyutitanium.com\/fr\/wp-json\/wp\/v2\/posts\/4506\/revisions"}],"predecessor-version":[{"id":5556,"href":"https:\/\/beiyutitanium.com\/fr\/wp-json\/wp\/v2\/posts\/4506\/revisions\/5556"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/beiyutitanium.com\/fr\/wp-json\/wp\/v2\/media\/4762"}],"wp:attachment":[{"href":"https:\/\/beiyutitanium.com\/fr\/wp-json\/wp\/v2\/media?parent=4506"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/beiyutitanium.com\/fr\/wp-json\/wp\/v2\/categories?post=4506"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/beiyutitanium.com\/fr\/wp-json\/wp\/v2\/tags?post=4506"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}