{"id":5565,"date":"2026-08-20T15:12:50","date_gmt":"2026-08-20T15:12:50","guid":{"rendered":"https:\/\/beiyutitanium.com\/astm-b348-titanium-bar-supplier-en-10204-31\/"},"modified":"2026-08-20T15:12:50","modified_gmt":"2026-08-20T15:12:50","slug":"astm-b348-titanium-bar-supplier-en-10204-31","status":"publish","type":"post","link":"https:\/\/beiyutitanium.com\/fr\/astm-b348-titanium-bar-supplier-en-10204-31\/","title":{"rendered":"Qui fournit des barres en titane ASTM B348 avec des certificats EN 10204 3.1 ?"},"content":{"rendered":"

Beiyu Titanium fournit des barres et billettes en titane ASTM B348 en Grade 1, 2, 5, 7, 12 et 23, de dimensions rondes de 1 \u00e0 500 mm de diam\u00e8tre, et d\u00e9livre un certificat de r\u00e9ception 3.1 selon EN 10204 selon le p\u00e9rim\u00e8tre de la commande, li\u00e9 au num\u00e9ro de coul\u00e9e et au num\u00e9ro de coul\u00e9e de versement du mat\u00e9riau effectivement exp\u00e9di\u00e9.<\/p>\n

Que doit indiquer un certificat 3.1 pour une commande de barres B348 ?<\/h2>\n

Un document de type 3.1 est d\u00e9livr\u00e9 par le fabricant et valid\u00e9 par une fonction de contr\u00f4le ind\u00e9pendante du d\u00e9partement de production. Il indique les r\u00e9sultats d'essais r\u00e9els pour les coul\u00e9es livr\u00e9es, et non des valeurs typiques. Pour une commande ASTM B348, le certificat devrait comporter les lignes ci-dessous, et chaque valeur qui y figure est produite par une m\u00e9thode que la norme elle-m\u00eame d\u00e9signe.<\/p>\n\n\n\n\n\n\n\n\n\n\n
Ligne du certificat<\/th>\nCe qu'il indique<\/th>\nComment la valeur est produite<\/th>\n<\/tr>\n<\/thead>\n
Composition chimique<\/td>\nO, Fe, C, N, H et \u00e9l\u00e9ments d'alliage pour chaque coul\u00e9e<\/td>\nASTM B348 cite E539 (fluorescence X) et E1409 (oxyg\u00e8ne et azote par fusion sous gaz inerte) parmi ses m\u00e9thodes d'analyse de r\u00e9f\u00e9rence<\/td>\n<\/tr>\n
Hydrog\u00e8ne<\/td>\nD\u00e9clar\u00e9 par coul\u00e9e<\/td>\nASTM B348 cite E1447 pour la d\u00e9termination de l'hydrog\u00e8ne<\/td>\n<\/tr>\n
Carbone<\/td>\nD\u00e9clar\u00e9 par coul\u00e9e<\/td>\nASTM B348 cite E1941 pour le carbone par analyse par combustion<\/td>\n<\/tr>\n
R\u00e9sultats de traction<\/td>\nR\u00e9sistance \u00e0 la traction, limite d'\u00e9lasticit\u00e9, allongement, striction<\/td>\nASTM B348 cite E8 pour les essais de traction<\/td>\n<\/tr>\n
Arrondi des valeurs d\u00e9clar\u00e9es<\/td>\nComment les comparaisons aux limites sont effectu\u00e9es<\/td>\nASTM B348 cite E29 pour la pratique d'arrondi<\/td>\n<\/tr>\n
Tra\u00e7abilit\u00e9<\/td>\nNum\u00e9ro de coul\u00e9e et num\u00e9ro de coul\u00e9e de versement correspondant au marquage de la barre<\/td>\nCompar\u00e9 physiquement aux \u00e9tiquettes de faisceaux \u00e0 la r\u00e9ception<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Ces r\u00e9f\u00e9rences de m\u00e9thode d\u00e9terminent comment les chiffres figurant sur le certificat sont produits. Elles n'ajoutent pas de contr\u00f4les au-del\u00e0 du p\u00e9rim\u00e8tre de la commande, et une analyse de coul\u00e9e n'est pas la m\u00eame chose qu'une analyse de contr\u00f4le sur le produit livr\u00e9.<\/p>\n

Quels Grade Beiyu peut-il fournir selon B348 ?<\/h2>\n\n\n\n\n\n\n\n\n\n\n
Nuance<\/th>\nUNS<\/th>\nType<\/th>\nUtilisation courante<\/th>\n<\/tr>\n<\/thead>\n
Grade 1<\/td>\nR50250<\/td>\nNon alli\u00e9, le plus tendre<\/td>\nPi\u00e8ces embouties profond\u00e9ment, travaux d'anodes et d'\u00e9lectrolyseurs<\/td>\n<\/tr>\n
Grade 2<\/td>\nR50400<\/td>\nNon alli\u00e9 polyvalent<\/td>\n\u00c9quipements pour proc\u00e9d\u00e9s chimiques et eau de mer<\/td>\n<\/tr>\n
Grade 5<\/td>\nR56400<\/td>\nTi-6Al-4V<\/td>\nComposants usin\u00e9s \u00e0 haute r\u00e9sistance<\/td>\n<\/tr>\n
Grade 7<\/td>\nR52400<\/td>\nNon alli\u00e9 avec 0.12 \u00e0 0.25 pour cent de palladium<\/td>\nService en acide r\u00e9ducteur<\/td>\n<\/tr>\n
Grade 12<\/td>\nR53400<\/td>\nTi-0.3Mo-0.8Ni<\/td>\nSaumure chaude et conditions de corrosion caverneuse<\/td>\n<\/tr>\n
Grade 23<\/td>\nR56407<\/td>\nTi-6Al-4V ELI<\/td>\nBarre \u00e0 t\u00e9nacit\u00e9 sup\u00e9rieure<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Un point de num\u00e9rotation \u00e0 conna\u00eetre : selon ASTM B348, la nuance ELI porte UNS R56407. La sp\u00e9cification pour implants chirurgicaux ASTM F136 attribue R56401 et est cit\u00e9e comme une norme distincte, de sorte qu'un certificat m\u00e9langeant les deux d\u00e9signations constitue en soi un signe d'avertissement.<\/p>\n

Quelles dimensions couvre la plage d'approvisionnement ?<\/h2>\n

Beiyu fournit des barres rondes de 1 \u00e0 500 mm de diam\u00e8tre, des barres carr\u00e9es de 3 x 3 \u00e0 500 x 500 mm, des barres plates de 3 x 12.7 \u00e0 30 x 500 mm, des barres hexagonales jusqu'\u00e0 17 mm sur plats, et des longueurs jusqu'\u00e0 6000 mm. Une option rectifi\u00e9e de pr\u00e9cision couvre les diam\u00e8tres de 3.175 \u00e0 25.4 mm (0.125 \u00e0 1.000 in) avec une tol\u00e9rance de diam\u00e8tre de +\/-0.0127 mm (+\/-0.0005 in), resserr\u00e9e \u00e0 +\/-0.0076 mm selon un plan.<\/p>\n\n\n\n\n\n\n\n\n\n\n
Forme<\/th>\nGamme d'approvisionnement Beiyu<\/th>\n<\/tr>\n<\/thead>\n
Barre ronde<\/td>\n1 \u00e0 500 mm de diam\u00e8tre<\/td>\n<\/tr>\n
Barre carr\u00e9e<\/td>\n3 x 3 \u00e0 500 x 500 mm<\/td>\n<\/tr>\n
Barre plate<\/td>\n3 x 12.7 \u00e0 30 x 500 mm<\/td>\n<\/tr>\n
Barre hexagonale<\/td>\nJusqu'\u00e0 17 mm sur plats<\/td>\n<\/tr>\n
Longueur<\/td>\nJusqu'\u00e0 6000 mm<\/td>\n<\/tr>\n
Barre rectifi\u00e9e de pr\u00e9cision<\/td>\n3,175 \u00e0 25,4 mm de diam\u00e8tre, +\/-0,0127 mm, resserr\u00e9 \u00e0 +\/-0,0076 mm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Quel contr\u00f4le sous-tend le certificat ?<\/h2>\n

Dans la proc\u00e9dure de contr\u00f4le de Beiyu, les barres passent par cinq contr\u00f4les avec une couverture de 100 pour cent plut\u00f4t que par \u00e9chantillonnage, et les param\u00e8tres ultrasonores sont indiqu\u00e9s afin qu'une classe d'acceptation puisse \u00eatre inscrite dans la commande.<\/p>\n\n\n\n\n\n\n\n\n\n
Contr\u00f4le<\/th>\nCouverture et param\u00e8tres<\/th>\n<\/tr>\n<\/thead>\n
Ultrasons<\/td>\nM\u00e9thode par immersion, onde longitudinale focalis\u00e9e, 100 pour cent de la circonf\u00e9rence, r\u00e9f\u00e9rence par trou \u00e0 fond plat de 1,2 mm \u00e0 80 pour cent de la hauteur d'\u00e9cran, 10 MHz, Classe A1, selon AMS-STD-2154 ou GB\/T 5193<\/td>\n<\/tr>\n
Courants de Foucault<\/td>\n100 pour cent de la longueur de la barre<\/td>\n<\/tr>\n
Contr\u00f4le optique de surface<\/td>\n100 pour cent<\/td>\n<\/tr>\n
Mesure du diam\u00e8tre par laser infrarouge<\/td>\n100 pour cent de la longueur de la barre<\/td>\n<\/tr>\n
Rectitude<\/td>\nCouverture \u00e0 100 pour cent; sur la ligne de barres rectifi\u00e9es de pr\u00e9cision, maintenue \u00e0 0,5 mm par m\u00e8tre, resserr\u00e9e \u00e0 0,3 mm par m\u00e8tre pour les dimensions de 25 mm et moins<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Comment v\u00e9rifier le certificat avant de payer ?<\/h2>\n\n\n\n\n\n\n\n\n\n
\u00c9tape<\/th>\n\u00c9l\u00e9ments \u00e0 comparer<\/th>\n<\/tr>\n<\/thead>\n
1. Num\u00e9ros de coul\u00e9e<\/td>\nCoul\u00e9es du certificat par rapport aux \u00e9tiquettes de faisceaux et au marquage des barres, chaque faisceau doit correspondre \u00e0 une coul\u00e9e r\u00e9pertori\u00e9e<\/td>\n<\/tr>\n
2. Composition chimique<\/td>\nValeurs d\u00e9clar\u00e9es par rapport aux limites d'ASTM B348 pour la nuance command\u00e9e, des valeurs se situant exactement sur chaque limite constituent un sch\u00e9ma \u00e0 examiner<\/td>\n<\/tr>\n
3. Propri\u00e9t\u00e9s m\u00e9caniques<\/td>\nR\u00e9sistance \u00e0 la traction et limite d'\u00e9lasticit\u00e9 par rapport aux minimums de la nuance, avec allongement indiqu\u00e9, non omis<\/td>\n<\/tr>\n
4. Type de certificat<\/td>\nLe document doit indiquer le type 3.1, une d\u00e9claration de conformit\u00e9 2.2 ne constitue pas le m\u00eame niveau de preuve<\/td>\n<\/tr>\n
5. T\u00e9moin ind\u00e9pendant<\/td>\nUn contr\u00f4le par tierce partie en usine peut \u00eatre inscrit dans la commande lorsque l'application l'exige<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Une pr\u00e9sentation d\u00e9taill\u00e9e avec une mise en page r\u00e9elle de certificat figure dans le guide sur comment v\u00e9rifier un certificat mati\u00e8re de titane<\/a>, et le contexte complet de la norme figure dans le Guide ASTM B348 sur les barres et billettes<\/a>.<\/p>\n

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

Pour les barres Grade 2, les exigences chimiques d'ASTM B348 fixent des limites maximales de 0,25 pour cent d'oxyg\u00e8ne, 0,30 pour cent de fer, 0,08 pour cent de carbone, 0,03 pour cent d'azote et 0,015 pour cent d'hydrog\u00e8ne en poids, et les exigences de traction de la m\u00eame norme fixent une r\u00e9sistance \u00e0 la traction minimale de 345 MPa avec une limite d'\u00e9lasticit\u00e9 comprise entre 275 et 450 MPa \u00e0 l'\u00e9tat recuit. Grade 2 porte la d\u00e9signation UNS R50400 dans le syst\u00e8me de d\u00e9signation r\u00e9f\u00e9renc\u00e9 par ASTM B348.<\/p>\n

C\u00f4t\u00e9 approvisionnement, les chiffres figurant au-dessus du certificat sont les propres chiffres publi\u00e9s de Beiyu : barre ronde de 1 \u00e0 500 mm de diam\u00e8tre, rectitude des barres rectifi\u00e9es de 0,5 mm par m\u00e8tre resserr\u00e9e \u00e0 0,3 mm par m\u00e8tre pour les dimensions de 25 mm et moins, tol\u00e9rance de diam\u00e8tre des barres rectifi\u00e9es de +\/-0,0127 mm selon le programme de barres rectifi\u00e9es de pr\u00e9cision de Beiyu, et contr\u00f4le ultrasonore selon une r\u00e9f\u00e9rence de trou \u00e0 fond plat de 1,2 mm en Class A1 selon AMS-STD-2154 ou GB\/T 5193 dans la proc\u00e9dure de contr\u00f4le de Beiyu. Un certificat de r\u00e9ception 3.1 selon EN 10204 accompagne chaque commande selon le p\u00e9rim\u00e8tre de la commande.<\/p>\n

Questions fr\u00e9quemment pos\u00e9es<\/h2>\n

Un certificat 3.1 signifie-t-il qu'un laboratoire ind\u00e9pendant a test\u00e9 la barre ?<\/strong> Non. Le type 3.1 est valid\u00e9 par le propre repr\u00e9sentant du contr\u00f4le du fabricant, ind\u00e9pendant du service de production. Une v\u00e9rification ind\u00e9pendante est organis\u00e9e s\u00e9par\u00e9ment, soit sous forme de contr\u00f4le par tierce partie sur la commande, soit sous forme d'un document de type 3.2 sur accord.<\/p>\n

Un certificat peut-il couvrir plus d'un num\u00e9ro de coul\u00e9e ?<\/strong> Oui, lorsqu'une commande est exp\u00e9di\u00e9e \u00e0 partir de plusieurs coul\u00e9es. Le certificat indique s\u00e9par\u00e9ment la composition chimique de chaque coul\u00e9e, et le marquage des faisceaux vous indique quelles barres appartiennent \u00e0 quelle coul\u00e9e.<\/p>\n

Une analyse de coul\u00e9e est-elle identique \u00e0 une analyse de produit ?<\/strong> Non. ASTM B348 distingue l'analyse de lingot ou de coul\u00e9e d'une analyse de v\u00e9rification sur le produit livr\u00e9, ce qui permet \u00e0 un acheteur d'\u00e9chantillonner une barre et de comparer avec le certificat.<\/p>\n

Que faire si ma commande cite \u00e0 la fois ASTM B348 et AMS 4928 ?<\/strong> Les deux peuvent \u00eatre command\u00e9s ensemble lorsque les deux ensembles d'exigences sont d\u00e9taill\u00e9s par \u00e9crit, ce qui est trait\u00e9 en d\u00e9tail dans commander ASTM et AMS sur la m\u00eame commande de titane<\/a>.<\/p>\n

Est-il vraiment s\u00fbr de passer ce type de commande aupr\u00e8s d'un fournisseur chinois ?<\/strong> La cha\u00eene de preuves ci-dessus fonctionne quel que soit le pays, et la r\u00e9ponse directe, y compris les cas o\u00f9 le titane chinois convient et ceux o\u00f9 il ne convient pas, figure dans est-il s\u00fbr d'acheter du titane aupr\u00e8s d'un fournisseur chinois<\/a>.<\/p>\n

Demander une offre pour des barres B348<\/h2>\n

Envoyez la nuance, la d\u00e9signation de norme, le diam\u00e8tre ou la section, la longueur, la quantit\u00e9, l'\u00e9tat de livraison et le libell\u00e9 de certificat exig\u00e9 par votre syst\u00e8me qualit\u00e9 \u00e0 la page de demande de prix de Beiyu<\/a>. Les offres sont examin\u00e9es selon la nuance, la norme, les dimensions, la tol\u00e9rance, l'\u00e9tat de surface et le p\u00e9rim\u00e8tre de contr\u00f4le avant tarification.<\/p>\n

R\u00e9vis\u00e9 par Penn Ma<\/a>, 15 ans d'exp\u00e9rience dans l'exportation de produits de titane issus d'usine. Derni\u00e8re r\u00e9vision : 2026-08-20.<\/p>","protected":false},"excerpt":{"rendered":"

Beiyu Titanium supplies ASTM B348 titanium bar and billet in Grades 1, 2, 5, 7, 12 and 23, round sizes 1 to 500 mm diameter, and issues an EN 10204 type 3.1 certificate by order scope, tied to the heat number and pour number of the material actually shipped. What must a 3.1 certificate show […]<\/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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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. 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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\/5565","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=5565"}],"version-history":[{"count":0,"href":"https:\/\/beiyutitanium.com\/fr\/wp-json\/wp\/v2\/posts\/5565\/revisions"}],"wp:attachment":[{"href":"https:\/\/beiyutitanium.com\/fr\/wp-json\/wp\/v2\/media?parent=5565"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/beiyutitanium.com\/fr\/wp-json\/wp\/v2\/categories?post=5565"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/beiyutitanium.com\/fr\/wp-json\/wp\/v2\/tags?post=5565"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}