{"id":5586,"date":"2026-08-25T01:32:49","date_gmt":"2026-08-25T01:32:49","guid":{"rendered":"https:\/\/beiyutitanium.com\/choosing-a-refractory-metal\/"},"modified":"2026-09-11T05:07:18","modified_gmt":"2026-09-11T05:07:18","slug":"choosing-a-refractory-metal","status":"publish","type":"post","link":"https:\/\/beiyutitanium.com\/fr\/choosing-a-refractory-metal\/","title":{"rendered":"Choisir entre le niobium, le tantale, le molybd\u00e8ne, le tungst\u00e8ne et le zirconium"},"content":{"rendered":"

Beiyu Titanium fournit du niobium, du tantale, du molybd\u00e8ne, du tungst\u00e8ne et du zirconium sous forme de produits d'usine. Cette page porte sur le choix du m\u00e9tal \u00e0 sp\u00e9cifier. Les compromis deux \u00e0 deux se trouvent au niveau inf\u00e9rieur, dans niobium vs tantale<\/a> et molybd\u00e8ne vs tungst\u00e8ne<\/a>.<\/p>\n

Ce que sont les cinq m\u00e9taux, avant toute comparaison<\/h2>\n

Les demandes de prix pour ces m\u00e9taux arrivent g\u00e9n\u00e9ralement d\u00e9j\u00e0 restreintes, et souvent selon le mauvais crit\u00e8re. La densit\u00e9 et le point de fusion sont les deux constantes que les documents des gammes d'approvisionnement de Beiyu Titanium indiquent au niveau du m\u00e9tal, ce qui explique pourquoi elles sont les deux donn\u00e9es pr\u00e9sent\u00e9es ici ; les chiffres se rapportent \u00e0 l'entr\u00e9e du m\u00e9tal telle qu'imprim\u00e9e et ne sont pas indiqu\u00e9s pour les nuances individuelles qui la suivent. Tout le reste est d\u00e9fini par la commande.<\/p>\n\n\n\n\n\n\n\n\n\n
M\u00e9tal<\/th>\nDensit\u00e9<\/th>\nPoint de fusion<\/th>\nNuances dans les gammes d'approvisionnement de Beiyu Titanium<\/th>\n<\/tr>\n<\/thead>\n
Tungst\u00e8ne<\/td>\n19,25 g\/cm³<\/td>\n3410 °C<\/td>\nW1, W2, W-Ni-Fe, W-Mo, W-Cu and W-La<\/td>\n<\/tr>\n
Tantale<\/td>\n16,69 g\/cm³<\/td>\n2996 °C<\/td>\nR05200, avec les R05252 contenant du tungst\u00e8ne \u00e0 Ta-2.5W et R05255 \u00e0 Ta-10W<\/td>\n<\/tr>\n
Molybd\u00e8ne<\/td>\n10,22 g\/cm³<\/td>\n2610 °C<\/td>\nMo1, Mo2, MoLa and TZM<\/td>\n<\/tr>\n
Niobium<\/td>\n8,57 g\/cm³<\/td>\n2468 °C<\/td>\nR04200 and R04210<\/td>\n<\/tr>\n
Zirconium<\/td>\nNon publi\u00e9 dans les gammes d'approvisionnement de Beiyu Titanium<\/td>\nNon publi\u00e9 dans les gammes d'approvisionnement de Beiyu Titanium<\/td>\nR60702 sous ZR702 et R60705 sous ZR705<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Les deux cellules vides le sont intentionnellement. Cette page ne contient que les valeurs imprim\u00e9es dans les documents des gammes d'approvisionnement de Beiyu Titanium, et les entr\u00e9es relatives au zirconium y indiquent les nuances, les formes et les dimensions sans constantes physiques. Une valeur provenant d'une r\u00e9f\u00e9rence g\u00e9n\u00e9rale ne ferait pas partie de ces valeurs, elle est donc omise plut\u00f4t que m\u00e9lang\u00e9e aux autres.<\/p>\n

L'\u00e9cart entre le tungst\u00e8ne et le niobium est un probl\u00e8me de manutention, pas une note de bas de page<\/h2>\n

Le tungst\u00e8ne est \u00e0 19,25 g\/cm³ contre le niobium \u00e0 8,57 g\/cm³, de sorte que la m\u00eame pi\u00e8ce \u00e9tir\u00e9e dans les deux m\u00e9taux diff\u00e8re de plus d'un facteur deux en masse. Cela d\u00e9termine l'exp\u00e9dition, le montage sur outillage et la n\u00e9cessit\u00e9 de r\u00e9\u00e9quilibrer un assemblage, et il convient de le r\u00e9gler avant la discussion sur la nuance plut\u00f4t qu'apr\u00e8s. Le point de fusion suit la m\u00eame tendance entre ces deux m\u00e9taux, le tungst\u00e8ne \u00e0 3410 °C et le niobium \u00e0 2468 °C, soit une diff\u00e9rence d'environ 940 °C. Les deux comparaisons concernent uniquement le tungst\u00e8ne et le niobium, et non l'ensemble du groupe, car la ligne du zirconium ci-dessus ne comporte aucune valeur publi\u00e9e permettant une comparaison.<\/p>\n

\n\"Twelve
Tungst\u00e8ne sous forme de tige fine. Image illustrative, pas une photographie de stock.<\/figcaption><\/figure>\n

Les formes dans lesquelles chaque m\u00e9tal est r\u00e9ellement disponible<\/h2>\n

Un m\u00e9tal n'est candidat que s'il est disponible dans la forme requise par la pi\u00e8ce, et les cinq ne proposent pas les m\u00eames formes dans les m\u00eames dimensions. Voici les gammes d'approvisionnement de Beiyu Titanium. Les articles command\u00e9s correspondant \u00e0 ces gammes sont barre et t\u00f4le en niobium<\/a> et tube en niobium<\/a>, barre et tige en molybd\u00e8ne<\/a>, barre et tige en tungst\u00e8ne<\/a>, et barre et fil de zirconium<\/a>, et plaque et t\u00f4le de zirconium<\/a>.<\/p>\n\n\n\n\n\n\n\n\n\n
M\u00e9tal<\/th>\nBarre<\/th>\nT\u00f4le ou plaque<\/th>\nFil<\/th>\nTube<\/th>\n<\/tr>\n<\/thead>\n
Tungst\u00e8ne<\/td>\nØ1,6 mm \u00e0 70 mm<\/td>\n1,0 mm \u00e0 25 mm d'\u00e9paisseur, largeur adapt\u00e9e \u00e0 la demande<\/td>\nØ0,1 mm \u00e0 1,6 mm<\/td>\nØ80 mm, \u00e9paisseur de paroi 3 mm \u00e0 5 mm, longueur 3000 mm<\/td>\n<\/tr>\n
Tantale<\/td>\nØ3,0 mm \u00e0 100 mm, longueur jusqu'\u00e0 3000 mm<\/td>\n0,03 mm \u00e0 10 mm d'\u00e9paisseur, largeur 30 mm \u00e0 1000 mm, longueur 30 mm \u00e0 2000 mm<\/td>\nØ0,3 mm \u00e0 3,0 mm<\/td>\nØ1,0 mm \u00e0 100 mm, longueur jusqu'\u00e0 12000 mm<\/td>\n<\/tr>\n
Molybd\u00e8ne<\/td>\nØ3,0 mm \u00e0 150 mm, longueur jusqu'\u00e0 3000 mm<\/td>\n0,1 mm \u00e0 40 mm d'\u00e9paisseur, largeur 10 mm \u00e0 800 mm, longueur 10 mm \u00e0 2000 mm<\/td>\nØ0,1 mm \u00e0 6,0 mm<\/td>\nØ10 mm \u00e0 80 mm, longueur jusqu'\u00e0 3000 mm<\/td>\n<\/tr>\n
Niobium<\/td>\nØ3 mm \u00e0 100 mm, longueur 6000 mm<\/td>\n0,03 mm \u00e0 10 mm d'\u00e9paisseur, largeur 30 mm \u00e0 1000 mm, longueur 50 mm \u00e0 2000 mm<\/td>\nØ0,3 mm \u00e0 3,0 mm<\/td>\nØ2,0 mm \u00e0 100 mm, longueur jusqu'\u00e0 8000 mm<\/td>\n<\/tr>\n
Zirconium<\/td>\nØ5 mm \u00e0 150 mm, longueur jusqu'\u00e0 6000 mm<\/td>\nT\u00f4le de 0,02 mm \u00e0 0,3 mm et de 0,5 mm \u00e0 3 mm d'\u00e9paisseur ; plaque de 3 mm \u00e0 70 mm d'\u00e9paisseur, largeur jusqu'\u00e0 2500 mm<\/td>\nØ0,5 mm \u00e0 6 mm, longueur jusqu'\u00e0 6000 mm<\/td>\nDiam\u00e8tre ext\u00e9rieur sans soudure 5 mm \u00e0 152 mm ; diam\u00e8tre ext\u00e9rieur soud\u00e9 6,35 mm \u00e0 1219 mm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Deux lignes de ce tableau m\u00e9ritent une lecture attentive. Le tube en tungst\u00e8ne est indiqu\u00e9 dans une seule dimension standard, Ø80 mm avec une \u00e9paisseur de paroi de 3 mm \u00e0 5 mm pour une longueur de 3000 mm, plut\u00f4t que sous forme de plage ; une exigence de tube en tungst\u00e8ne \u00e0 un autre diam\u00e8tre doit donc faire l'objet d'une offre plut\u00f4t que d'\u00eatre recherch\u00e9e dans le tableau. Et le zirconium est le seul des cinq dont la plage de tubes indiqu\u00e9e d\u00e9passe 152 mm, allant jusqu'\u00e0 1219 mm de diam\u00e8tre ext\u00e9rieur pour les tubes soud\u00e9s, ce qui place les travaux de tubes soud\u00e9s de grand diam\u00e8tre dans la colonne du zirconium.<\/p>\n

\n\"Three
Tantale sous forme de t\u00f4le fine. Image illustrative, pas une photographie de stock.<\/figcaption><\/figure>\n

Le zirconium est le seul m\u00e9tal pour lequel la norme suit la forme<\/h2>\n

Il s'agit d'une diff\u00e9rence structurelle \u00e0 conna\u00eetre avant de r\u00e9diger une commande. Pour le tungst\u00e8ne, le tantale, le molybd\u00e8ne et le niobium, les gammes d'approvisionnement de Beiyu Titanium indiquent les normes une seule fois pour le m\u00e9tal dans son ensemble : ASTM B760 et B777 pour le tungst\u00e8ne, B386 et B387 pour le molybd\u00e8ne, B365, B521 et B708 pour le tantale, et B392, B393 et B394 pour le niobium. Ces entr\u00e9es couvrent toutes les formes ensemble, aucune n'est donc associ\u00e9e ici sp\u00e9cifiquement \u00e0 une barre ou \u00e0 un tube.<\/p>\n

Le zirconium est r\u00e9pertori\u00e9 \u00e0 l'inverse, avec un document pour chaque forme : ASTM B550 pour les barres, B551 pour les t\u00f4les et plaques, B658 et B523 pour tube<\/a>, B493 pour les pi\u00e8ces forg\u00e9es, et AWS A5.24 (ASME SFA-5.24) pour le fil. Cette derni\u00e8re ligne m\u00e9rite d'\u00eatre lue deux fois, car l'entr\u00e9e relative au fil renvoie \u00e0 autre chose qu'un document ASTM B alors que le reste de la gamme de zirconium ne le fait pas.<\/p>\n

Ce qu'une demande doit comporter une fois le m\u00e9tal choisi<\/h2>\n

Le choix du m\u00e9tal est le premier des cinq champs, et non l'ensemble de la sp\u00e9cification. La nuance avec sa d\u00e9signation UNS vient ensuite, car R05252 et R05255 sont des tantales diff\u00e9rents et R60702 et R60705 sont des zirconiums diff\u00e9rents. Viennent ensuite la forme et ses dimensions avec tol\u00e9rances, la condition de livraison, ainsi que le p\u00e9rim\u00e8tre de contr\u00f4le et de documentation, o\u00f9 sont indiqu\u00e9s EN 10204 3.1 et la tra\u00e7abilit\u00e9 par num\u00e9ro de coul\u00e9e s'ils sont demand\u00e9s. Beiyu Titanium les examine ensemble, et une demande de prix qui ne mentionne qu'un m\u00e9tal et une quantit\u00e9 se situe au d\u00e9but de cet examen plut\u00f4t qu'\u00e0 sa fin.<\/p>\n

Pour voir qui d'autre publie ce mat\u00e9riau et ce que chacun indique, voir Fournisseurs de barres en zirconium : comparaison de cinq pages d'entreprises<\/a>.<\/p>\n

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

Chaque valeur de cette page a \u00e9t\u00e9 relev\u00e9e ligne par ligne, selon une r\u00e8gle de lecture \u00e9tablie avant de remplir le tableau : une cellule ne comporte un nombre que lorsqu'une source en indique un pour ce m\u00e9tal, et elle pr\u00e9cise clairement le cas o\u00f9 il n'y en a pas. C'est pourquoi les cellules de densit\u00e9 et de point de fusion du zirconium indiquent non publi\u00e9 dans les gammes d'approvisionnement de Beiyu Titanium, au lieu de comporter un nombre emprunt\u00e9 \u00e0 une r\u00e9f\u00e9rence g\u00e9n\u00e9rale.<\/p>\n

Les normes ont \u00e9t\u00e9 lues selon la m\u00eame r\u00e8gle. Le tungst\u00e8ne, le molybd\u00e8ne, le tantale et le niobium comportent chacun une entr\u00e9e de normes couvrant le m\u00e9tal et toutes ses formes, cette page les pr\u00e9sente donc au niveau du m\u00e9tal. Le zirconium comporte une entr\u00e9e pour chaque forme, et cette asym\u00e9trie est indiqu\u00e9e plut\u00f4t que liss\u00e9e, car l'aplanir donnerait \u00e0 quatre m\u00e9taux une pr\u00e9cision au niveau de la forme que leurs documents ne fournissent pas.<\/p>","protected":false},"excerpt":{"rendered":"

Les formes sous lesquelles chacun des cinq m\u00e9taux r\u00e9fractaires est fourni, les formes et dimensions disponibles pour chacun, et les normes d\u00e9sign\u00e9es par m\u00e9tal ou par forme.<\/p>","protected":false},"author":2,"featured_media":0,"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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industrial buyers worldwide. Production runs through the Beiyu titanium mill in Baoji, Shaanxi. 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Over 15 years in titanium export he has learned to review each specification line himself, checking grade, standard, dimensions, tolerance and certificate scope against mill capability before quoting, rather than routing enquiries through a sales desk. He came to titanium supply from the other side of the transaction. Before leading Beiyu's international business he worked at Koch (Koch-Glitsch) and was directly involved in delivering a SABIC petrochemical project in Fujian, China. That work was built on inspection and test plans, material certification and heat traceability, third party inspection coordination, and project documentation and dossier control. Those are the same four things a process industry or regulated buyer will hold a titanium supplier to, and having had to enforce them as a customer is why they are treated here as part of the supply rather than as paperwork produced afterwards. His day-to-day work spans the questions this site is written to answer: choosing between commercially pure and alloyed titanium grades for a corrosive service, reading a mill test certificate against the ordered standard, and matching a buyer's designation (ASTM grade, UNS, German Werkstoff number or French NF code) to the same metal across markets. Beiyu supplies titanium, nickel-alloy and refractory mill products across bar, rod, plate, tube, block, ring, coil, ingot, forgings and machined parts, with EN 10204 3.1 documentation and heat-number traceability.\",\"url\":\"https:\\\/\\\/beiyutitanium.com\\\/fr\\\/author\\\/penn-ma\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Choisir un m\u00e9tal r\u00e9fractaire : Nb, Ta, Mo, W ou Zr","description":"Les formes sous lesquelles chacun des cinq m\u00e9taux r\u00e9fractaires est fourni, les formes et dimensions disponibles pour chacun, et les normes d\u00e9sign\u00e9es par m\u00e9tal ou par forme.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/beiyutitanium.com\/fr\/choosing-a-refractory-metal\/","og_locale":"fr_FR","og_type":"article","og_title":"Choosing a Refractory Metal: Nb, Ta, Mo, W or 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Titanium"},"image":{"@id":"https:\/\/beiyutitanium.com\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.linkedin.com\/company\/113015050\/","https:\/\/www.youtube.com\/channel\/UC4Rr5qjUmKbbnROzU8zwluQ","https:\/\/www.instagram.com\/beiyutrade\/","https:\/\/www.facebook.com\/people\/Beiyu-Titanium-Group\/61580787646046\/","https:\/\/www.crunchbase.com\/organization\/beiyu-titanium","https:\/\/www.wikidata.org\/wiki\/Q140386451"],"contactPoint":{"@type":"ContactPoint","contactType":"sales","email":"penn@beiyutitanium.com","availableLanguage":["English","Chinese"]},"description":"Beiyu Titanium (entit\u00e9 juridique Jiaxing Beiyu New Materials Technology Co., Ltd.) est un fournisseur et exportateur chinois de barres, plaques, t\u00f4les, tubes, pi\u00e8ces forg\u00e9es, brides, \u00e9l\u00e9ments de fixation et pi\u00e8ces usin\u00e9es sur mesure en titane ASTM et AMS, ainsi que d'alliages de nickel et Inconel, destin\u00e9s aux acheteurs des secteurs chimique, maritime, 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La production est assur\u00e9e par l'usine de titane Beiyu \u00e0 Baoji, Shaanxi. 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Avec plus de 15 ans d'exp\u00e9rience dans l'exportation de titane, il a appris \u00e0 examiner lui-m\u00eame chaque ligne de sp\u00e9cification, en v\u00e9rifiant la nuance, la norme, les dimensions, la tol\u00e9rance et le p\u00e9rim\u00e8tre du certificat par rapport aux capacit\u00e9s de l'usine avant d'\u00e9tablir une offre, plut\u00f4t que d'orienter les demandes vers un service commercial. Il est venu \u00e0 l'approvisionnement en titane depuis l'autre c\u00f4t\u00e9 de la transaction. Avant de diriger les activit\u00e9s internationales de Beiyu, il a travaill\u00e9 chez Koch (Koch-Glitsch) et a particip\u00e9 directement \u00e0 la r\u00e9alisation d'un projet p\u00e9trochimique SABIC dans le Fujian, en Chine. 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\/5586","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=5586"}],"version-history":[{"count":2,"href":"https:\/\/beiyutitanium.com\/fr\/wp-json\/wp\/v2\/posts\/5586\/revisions"}],"predecessor-version":[{"id":6251,"href":"https:\/\/beiyutitanium.com\/fr\/wp-json\/wp\/v2\/posts\/5586\/revisions\/6251"}],"wp:attachment":[{"href":"https:\/\/beiyutitanium.com\/fr\/wp-json\/wp\/v2\/media?parent=5586"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/beiyutitanium.com\/fr\/wp-json\/wp\/v2\/categories?post=5586"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/beiyutitanium.com\/fr\/wp-json\/wp\/v2\/tags?post=5586"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}