{"id":6249,"date":"2026-09-11T04:28:36","date_gmt":"2026-09-11T04:28:36","guid":{"rendered":"https:\/\/beiyutitanium.com\/titanium-facts\/"},"modified":"2026-09-11T12:24:23","modified_gmt":"2026-09-11T12:24:23","slug":"titanium-facts","status":"publish","type":"post","link":"https:\/\/beiyutitanium.com\/fr\/titanium-facts\/","title":{"rendered":"Faits sur le titane : les chiffres, leur dispersion et ce qu'un certificat confirme"},"content":{"rendered":"

La plupart des listes de faits sur le titane m\u00e9langent deux choses diff\u00e9rentes : des informations anecdotiques sur l'\u00e9l\u00e9ment et des chiffres qu'un ing\u00e9nieur va inscrire sur un plan. Il est utile d'\u00eatre pr\u00e9cis sur le second type, car plusieurs des valeurs qui circulent sont cit\u00e9es avec une pr\u00e9cision sup\u00e9rieure \u00e0 celle r\u00e9ellement \u00e9tay\u00e9e par les sources, et certaines des propri\u00e9t\u00e9s les plus souvent mentionn\u00e9es ne sont pas v\u00e9rifi\u00e9es par les sp\u00e9cifications selon lesquelles le titane est achet\u00e9.<\/p>\n

\"Batch<\/figure>\n

Les chiffres, avec la dispersion r\u00e9ellement indiqu\u00e9e par les sources<\/h2>\n

Voici les valeurs que Beiyu Titanium publie pour Grade 2, une nuance non alli\u00e9e. Lorsque les sources divergent, la divergence est indiqu\u00e9e au lieu d'\u00eatre \u00e9limin\u00e9e par une moyenne.<\/p>\n\n\n\n\n\n\n\n\n\n\n
Propri\u00e9t\u00e9<\/th>\nM\u00e9trique<\/th>\nImp\u00e9rial<\/th>\n<\/tr>\n
Densit\u00e9<\/td>\n4,51 g\/cm³<\/td>\n0.163 lb\/in³<\/td>\n<\/tr>\n
Point de fusion<\/td>\nEnviron 1660 °C; les sources indiquent 1649 \u00e0 1671 °C<\/td>\nEnviron 3020 °F; 3000 \u00e0 3040 °F<\/td>\n<\/tr>\n
Module d'\u00e9lasticit\u00e9<\/td>\n105 GPa<\/td>\n15,2 \u00d7 10\u2076 psi<\/td>\n<\/tr>\n
Coefficient de Poisson<\/td>\n0.32<\/td>\n0.32<\/td>\n<\/tr>\n
Conductivit\u00e9 thermique \u00e0 20 °C<\/td>\n20 \u00e0 22 W\/m·K<\/td>\n11.6 \u00e0 12.7 BTU\/hr·ft·°F<\/td>\n<\/tr>\n
Capacit\u00e9 thermique massique<\/td>\n520 J\/kg·K<\/td>\n0.124 BTU\/lb·°F<\/td>\n<\/tr>\n
Coefficient de dilatation thermique<\/td>\n8.6 × 10⁻\u2076 \/K (0 to 100 °C)<\/td>\n4.8 µin\/in·°F (68 \u00e0 212 °F)<\/td>\n<\/tr>\n
R\u00e9sistivit\u00e9 \u00e9lectrique<\/td>\n0.48 \u00e0 0.53 µΩ·m<\/td>\n19 \u00e0 21 µΩ·in<\/td>\n<\/tr>\n<\/table>\n

Deux de ces entr\u00e9es m\u00e9ritent une mise en garde plut\u00f4t qu'un chiffre net. Les 20 \u00e0 22 W\/m·K du tableau correspondent \u00e0 la valeur \u00e0 20 °C; selon les sources et les bases de temp\u00e9rature, la dispersion publi\u00e9e s'\u00e9largit \u00e0 environ 16 \u00e0 22 W\/m·K, et la r\u00e9sistivit\u00e9 \u00e9lectrique se comporte de la m\u00eame mani\u00e8re, de sorte que le dimensionnement devrait utiliser la valeur prise en charge par le code de conception. Le point de fusion est \u00e9galement cit\u00e9 diff\u00e9remment selon les r\u00e9f\u00e9rences, raison pour laquelle il est donn\u00e9 ici sous forme de plage plut\u00f4t que comme valeur unique. Un chiffre unique n'est pas plus pr\u00e9cis qu'une plage; il masque seulement l'emplacement de l'incertitude.<\/p>\n

La r\u00e9sistivit\u00e9 \u00e9lectrique est le domaine o\u00f9 cette dispersion est la plus large et o\u00f9 la nuance importe le plus, car Grade 5 est environ trois fois plus r\u00e9sistif que Grade 2. Les chiffres nuance par nuance, ainsi que les divergences entre sources publi\u00e9es pr\u00e9sent\u00e9es c\u00f4te \u00e0 c\u00f4te plut\u00f4t que moyenn\u00e9es, figurent dans le titane est-il conducteur<\/a>.<\/p>\n

Lesquels de ces \u00e9l\u00e9ments sont r\u00e9ellement confirm\u00e9s par un certificat mati\u00e8re<\/h2>\n

C'est la partie qui distingue un fait utile \u00e0 citer d'un fait utile pour agir. ASTM B265 et ASTM B348, les sp\u00e9cifications selon lesquelles sont command\u00e9es la plupart des t\u00f4les, plaques et barres en titane, fixent la composition chimique, les propri\u00e9t\u00e9s m\u00e9caniques et les tol\u00e9rances dimensionnelles. Elles ne couvrent pas les propri\u00e9t\u00e9s physiques du tableau ci-dessus.<\/p>\n\n\n\n\n\n\n
Type de valeur<\/th>\n\u00c9l\u00e9ment de rapport courant selon B265 ou B348 ?<\/th>\nCe que cela signifie pour un plan<\/th>\n<\/tr>\n
Composition chimique et propri\u00e9t\u00e9s de traction<\/td>\nOui, exig\u00e9 et rapport\u00e9<\/td>\nPeut \u00eatre sp\u00e9cifi\u00e9 et peut faire l'objet d'un rejet<\/td>\n<\/tr>\n
Densit\u00e9, point de fusion, valeurs thermiques et \u00e9lectriques<\/td>\nNon<\/td>\nDonn\u00e9es de conception; une limite d'acceptation n\u00e9cessite un accord distinct sur la commande<\/td>\n<\/tr>\n
Duret\u00e9<\/td>\nNon. La fiche technique Grade 2 indique des valeurs publi\u00e9es typiques proches de 150 HB et s\u00e9par\u00e9ment 160 \u00e0 200 HV<\/td>\nN\u00e9cessite un essai suppl\u00e9mentaire convenu s'il s'agit d'une exigence<\/td>\n<\/tr>\n
Perm\u00e9abilit\u00e9 magn\u00e9tique<\/td>\nNon<\/td>\nVoir le titane est-il magn\u00e9tique<\/a> pour les chiffres et la clause<\/td>\n<\/tr>\n<\/table>\n

La cons\u00e9quence pratique est qu'une sp\u00e9cification qui r\u00e9p\u00e8te une densit\u00e9 de manuel ou un point de fusion nominal comme si la norme le v\u00e9rifiait s'appuie sur un \u00e9l\u00e9ment que ces sp\u00e9cifications ne rapportent pas. Une telle limite n'est pas impossible \u00e0 commander, mais elle doit faire l'objet d'un accord distinct, avec la m\u00e9thode et l'exigence de rapport inscrites sur la commande. Sinon, le chiffre rel\u00e8ve du calcul plut\u00f4t que de la clause d'acceptation.<\/p>\n

\"Titanium<\/figure>\n

Trois faits qui modifient ce que fait un acheteur<\/h2>\n\n\n\n\n\n
Fait<\/th>\nPourquoi cela importe sur une commande<\/th>\n<\/tr>\n
Le titane Grade 2 a une densit\u00e9 de 4,51 g\/cm³<\/td>\nLe poids par m\u00e8tre est un calcul, non une valeur de catalogue ; il d\u00e9coule de la section et de cette densit\u00e9<\/td>\n<\/tr>\n
Le titane ne forme pas de rouille, car la rouille est un oxyde de fer<\/td>\nIl comporte \u00e0 la place un film passif de dioxyde de titane. La r\u00e9sistance \u00e0 la corrosion est g\u00e9n\u00e9ralement associ\u00e9e \u00e0 ce film et, dans certains milieux, le film peut perdre sa stabilit\u00e9, de sorte que ne pas rouiller n'est pas la m\u00eame chose que ne pas se corroder<\/td>\n<\/tr>\n
Le titane non alli\u00e9 n'est pas un mat\u00e9riau unique<\/td>\nGrade 1, 2, 3 et 4 sont tous non alli\u00e9s et pr\u00e9sentent des limites de composition chimique diff\u00e9rentes, l'oxyg\u00e8ne et d'autres \u00e9l\u00e9ments interstitiels figurant parmi les \u00e9l\u00e9ments qui les distinguent. D\u00e9signer du \u00ab titane CP \u00bb sans indiquer la nuance, la forme du produit et la norme applicable laisse les exigences chimiques et m\u00e9caniques applicables ind\u00e9termin\u00e9es<\/td>\n<\/tr>\n<\/table>\n

Pour les chiffres par nuance \u00e0 l'appui de ces \u00e9l\u00e9ments, voir les Grade 2<\/a> et Grade 5<\/a> fiches techniques, qui indiquent les limites de composition chimique, les minimums m\u00e9caniques et les normes selon lesquelles chacune est fournie.<\/p>\n

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

Les valeurs des propri\u00e9t\u00e9s physiques cit\u00e9es ci-dessus sont celles figurant dans la fiche technique Beiyu Titanium Grade 2, y compris le point de fusion d'environ 1660 \u00b0C (les sources indiquent 1649 \u00e0 1671 \u00b0C) et la plage de conductivit\u00e9 thermique d'environ 16 \u00e0 22 W\/m\u00b7K qui y est indiqu\u00e9e. L'affirmation selon laquelle ces propri\u00e9t\u00e9s sont absentes d'ASTM B265 et ASTM B348 refl\u00e8te le champ d'application de ces sp\u00e9cifications, qui couvrent la composition chimique, les propri\u00e9t\u00e9s m\u00e9caniques et les tol\u00e9rances dimensionnelles ; la densit\u00e9, le point de fusion, la duret\u00e9 et la perm\u00e9abilit\u00e9 magn\u00e9tique ne figurent pas parmi les \u00e9l\u00e9ments rapport\u00e9s, raison pour laquelle une limite sur l'une quelconque d'entre elles est convenue entre l'acheteur et le fournisseur et indiqu\u00e9e sur la commande plut\u00f4t que suppos\u00e9e \u00e0 partir de la norme.<\/p>\n

Commander selon les chiffres plut\u00f4t que selon les informations anecdotiques<\/h2>\n

Beiyu Titanium fournit des barres, plaques, t\u00f4les, tubes et pi\u00e8ces forg\u00e9es en titane dans les Grade 1, 2, 5, 7, 9, 12 et 23 selon les sp\u00e9cifications ASTM et AMS, avec un certificat de r\u00e9ception 3.1 selon EN 10204 selon le p\u00e9rim\u00e8tre de la commande. Indiquez la nuance, la sp\u00e9cification applicable, les dimensions avec tol\u00e9rance, l'\u00e9tat de livraison et de surface ainsi que le p\u00e9rim\u00e8tre de contr\u00f4le. Lorsqu'une propri\u00e9t\u00e9 physique doit \u00eatre maintenue dans une limite, indiquez la limite, la m\u00e9thode d'essai et l'exigence de rapport sur la commande afin qu'ils puissent \u00eatre convenus lors de l'offre.<\/p>","protected":false},"excerpt":{"rendered":"

Most titanium fact lists mix two different things: trivia about the element, and numbers an engineer is going to put on a drawing. The second kind is worth getting right, because several of the figures that circulate are quoted to more precision than the sources actually support, and a few of the properties most often […]<\/p>\n","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. Orders are RFQ-based, with EN 10204 3.1 mill test certificates and heat-number traceability available on request.\",\"areaServed\":\"Worldwide\",\"knowsAbout\":[\"Titanium\",\"Titanium alloy\",\"Titanium bar\",\"Titanium sheet and plate\",\"Titanium tube and pipe\",\"Titanium forgings\",\"Titanium wire\",\"Titanium anode\"],\"address\":{\"@type\":\"PostalAddress\",\"streetAddress\":\"Baotai Road Industrial Park, High-tech Development Zone\",\"addressLocality\":\"Baoji\",\"addressRegion\":\"Shaanxi\",\"addressCountry\":\"CN\"},\"legalName\":\"Jiaxing Beiyu New Materials Technology Co., Ltd.\"},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/beiyutitanium.com\\\/#\\\/schema\\\/person\\\/3560db17cf08813edf34f012735b971b\",\"name\":\"Penn Ma\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/0659bdefb633d0d8e567b06d2f8bffac2a369834e53e96c922a06fd8a96f3c72?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/0659bdefb633d0d8e567b06d2f8bffac2a369834e53e96c922a06fd8a96f3c72?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/0659bdefb633d0d8e567b06d2f8bffac2a369834e53e96c922a06fd8a96f3c72?s=96&d=mm&r=g\",\"caption\":\"Penn Ma\"},\"description\":\"Penn Ma is the person who answers the RFQs at Beiyu Titanium. 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":"Faits sur le titane : propri\u00e9t\u00e9s et v\u00e9rifications par les normes | Beiyu","description":"Propri\u00e9t\u00e9s du titane avec la dispersion r\u00e9ellement indiqu\u00e9e par les sources, ainsi que les valeurs rapport\u00e9es par ASTM B265 et B348 et celles qui n\u00e9cessitent un accord distinct dans la commande.","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\/titanium-facts\/","og_locale":"fr_FR","og_type":"article","og_title":"Titanium Facts: 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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, m\u00e9dical et industriel dans le monde entier. La production est assur\u00e9e par l'usine de titane Beiyu \u00e0 Baoji, Shaanxi. Les commandes sont trait\u00e9es sur demande de prix, avec des certificats de r\u00e9ception 3.1 selon EN 10204 et une tra\u00e7abilit\u00e9 par num\u00e9ro de coul\u00e9e disponibles sur demande.","areaServed":"Worldwide","knowsAbout":["Titanium","Titanium alloy","Titanium bar","Titanium sheet and plate","Titanium tube and pipe","Titanium forgings","Titanium wire","Titanium anode"],"address":{"@type":"PostalAddress","streetAddress":"Baotai Road Industrial Park, High-tech Development Zone","addressLocality":"Baoji","addressRegion":"Shaanxi","addressCountry":"CN"},"legalName":"Jiaxing Beiyu New Materials Technology Co., Ltd."},{"@type":"Person","@id":"https:\/\/beiyutitanium.com\/#\/schema\/person\/3560db17cf08813edf34f012735b971b","name":"Penn Ma","image":{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/secure.gravatar.com\/avatar\/0659bdefb633d0d8e567b06d2f8bffac2a369834e53e96c922a06fd8a96f3c72?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/0659bdefb633d0d8e567b06d2f8bffac2a369834e53e96c922a06fd8a96f3c72?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/0659bdefb633d0d8e567b06d2f8bffac2a369834e53e96c922a06fd8a96f3c72?s=96&d=mm&r=g","caption":"Penn Ma"},"description":"Penn Ma est la personne qui r\u00e9pond aux demandes de prix chez Beiyu Titanium. 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\/6249","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=6249"}],"version-history":[{"count":1,"href":"https:\/\/beiyutitanium.com\/fr\/wp-json\/wp\/v2\/posts\/6249\/revisions"}],"predecessor-version":[{"id":6256,"href":"https:\/\/beiyutitanium.com\/fr\/wp-json\/wp\/v2\/posts\/6249\/revisions\/6256"}],"wp:attachment":[{"href":"https:\/\/beiyutitanium.com\/fr\/wp-json\/wp\/v2\/media?parent=6249"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/beiyutitanium.com\/fr\/wp-json\/wp\/v2\/categories?post=6249"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/beiyutitanium.com\/fr\/wp-json\/wp\/v2\/tags?post=6249"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}