{"id":5431,"date":"2026-08-14T08:53:01","date_gmt":"2026-08-14T08:53:01","guid":{"rendered":"https:\/\/beiyutitanium.com\/titanium-bar-diameter-tolerance-how-to-specify\/"},"modified":"2026-08-15T01:47:35","modified_gmt":"2026-08-15T01:47:35","slug":"titanium-bar-diameter-tolerance-how-to-specify","status":"publish","type":"post","link":"https:\/\/beiyutitanium.com\/es\/titanium-bar-diameter-tolerance-how-to-specify\/","title":{"rendered":"Tolerancia del di\u00e1metro de barras de titanio: valor o clase ISO"},"content":{"rendered":"
\"Digital<\/figure>\n

Una tolerancia no es un \u00fanico n\u00famero para todo el rango de barras<\/h2>\n

La tolerancia del di\u00e1metro depende de c\u00f3mo se haya acabado la barra<\/a> y del propio di\u00e1metro. Solicitar una \u00fanica cifra para un rango de dimensiones suele dar lugar a una oferta que no significa lo que el comprador cre\u00eda.<\/p>\n\n\n\n\n\n\n\n
Qu\u00e9 modifica la tolerancia alcanzable<\/th>\n<\/tr>\n<\/thead>\n
El estado superficial final de la barra<\/td>\n<\/tr>\n
El di\u00e1metro solicitado<\/td>\n<\/tr>\n
Si el valor se necesita en cada barra o como promedio del lote<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Qu\u00e9 tolerancias mantiene Beiyu en el proceso de rectificado de precisi\u00f3n<\/h2>\n\n\n\n\n\n\n\n
Requisito<\/th>\nTolerancia de di\u00e1metro<\/th>\n<\/tr>\n<\/thead>\n
Barra rectificada sin centros con precisi\u00f3n est\u00e1ndar<\/td>\nM\u00e1s o menos 0,0127 mm<\/td>\n<\/tr>\n
M\u00e1s estricta, cuando lo exige el plano<\/td>\nM\u00e1s o menos 0,0076 mm<\/td>\n<\/tr>\n
Barra pelada o torneada<\/td>\nConforme a la tabla de tolerancias de la norma solicitada<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

El valor m\u00e1s estricto se establece conforme al plano en lugar de ofrecerse como una capacidad general, y se confirma para el di\u00e1metro solicitado antes de fijar el precio.<\/p>\n

Las calidades ISO h y los valores m\u00e1s-menos son lenguajes distintos<\/h2>\n

Los planos de mecanizado suelen indicar una clase de tolerancia ISO, mientras que las partidas de pedidos a f\u00e1brica suelen indicar un valor m\u00e1s-menos. No son intercambiables, porque una clase ISO depende del di\u00e1metro y una cifra m\u00e1s-menos no.<\/p>\n\n\n\n\n\n\n\n
C\u00f3mo se expresa<\/th>\nQu\u00e9 implica<\/th>\n<\/tr>\n<\/thead>\n
Clase ISO h<\/td>\nLa banda permitida cambia con el di\u00e1metro nominal<\/td>\n<\/tr>\n
M\u00e1s o menos un valor<\/td>\nLa misma banda para todos los di\u00e1metros del pedido<\/td>\n<\/tr>\n
Clase sin dimensi\u00f3n nominal<\/td>\nNo puede convertirse en un l\u00edmite de mecanizado<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

La tolerancia del di\u00e1metro se mide, no se presupone<\/h2>\n

El di\u00e1metro se mide mediante l\u00e1ser infrarrojo en cada pieza que sale del proceso de rectificado de precisi\u00f3n, por lo que la banda puede tratarse como un criterio de aceptaci\u00f3n y no como un objetivo.<\/p>\n\n\n\n\n\n\n\n\n\n
Inspecci\u00f3n al 100 por ciento en ese proceso<\/th>\n<\/tr>\n<\/thead>\n
Detecci\u00f3n de defectos por ultrasonidos<\/td>\n<\/tr>\n
Detecci\u00f3n de defectos por corrientes inducidas<\/td>\n<\/tr>\n
Inspecci\u00f3n \u00f3ptica superficial<\/td>\n<\/tr>\n
Medici\u00f3n del di\u00e1metro mediante l\u00e1ser infrarrojo<\/td>\n<\/tr>\n
Detecci\u00f3n de rectitud<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Los campos que acompa\u00f1an a la tolerancia<\/h2>\n

Una tolerancia de di\u00e1metro por s\u00ed sola no hace que una barra sea apta para mecanizado. Estos son los campos que determinan si se comporta como se espera en la m\u00e1quina<\/a>.<\/p>\n\n\n\n\n\n\n\n\n
Campo<\/th>\nPor qu\u00e9 debe figurar en la misma l\u00ednea<\/th>\n<\/tr>\n<\/thead>\n
Condici\u00f3n superficial<\/td>\nDetermina qu\u00e9 banda de tolerancia es alcanzable<\/td>\n<\/tr>\n
Rectitud<\/td>\nUna barra dentro de la tolerancia de di\u00e1metro puede seguir aliment\u00e1ndose mal<\/td>\n<\/tr>\n
Longitud y tolerancia de corte<\/td>\nDetermina c\u00f3mo se carga la barra y cu\u00e1nto material se pierde por pieza<\/td>\n<\/tr>\n
Sobrematerial de mecanizado<\/td>\nIndica si se deja sobremetal para una pasada de acabado<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Qu\u00e9 escribir en el pedido<\/h2>\n
Di\u00e1metro nominal: ______ Tolerancia del di\u00e1metro: ______ (indique un valor m\u00e1s-menos, o una clase ISO con la dimensi\u00f3n nominal) Estado superficial: ______ (pelado, torneado, rectificado sin centros o pulido) Rectitud: ______ mm por metro Longitud y tolerancia de corte: ______ Sobremetal de mecanizado: ______ (indique si debe dejarse sobremetal para una pasada de acabado)<\/pre>\n
Una banda de tolerancia habitual en un di\u00e1metro puede exigir una operaci\u00f3n especial en otro. Beiyu confirma la banda en relaci\u00f3n con el di\u00e1metro y el estado superficial solicitados<\/a> antes de ofertar.<\/p>\n
\n
Detalles de especificaci\u00f3n con fuentes<\/h2>\n
La tolerancia de di\u00e1metro se consulta en una tabla de la norma de producto, no es un \u00fanico valor. ASTM B348<\/a> establece que las tolerancias del material cubierto por la especificaci\u00f3n deben ser las indicadas en sus tablas dimensionales (ASTM B348, dimensiones, peso y variaciones admisibles), por lo que una tolerancia indicada sin su di\u00e1metro y forma de producto no tiene un significado concreto.<\/p>\n\n\n\n\n\n\n\n
Qu\u00e9 indica usted<\/th>\nCon qu\u00e9 debe asociarse<\/th>\n<\/tr>\n<\/thead>\n
Un valor positivo y negativo<\/td>\nEl di\u00e1metro solicitado, ya que el valor no es independiente del di\u00e1metro<\/td>\n<\/tr>\n
Una clase de tolerancia ISO<\/td>\nLa dimensi\u00f3n a la que se aplica, ya que la clase var\u00eda con el tama\u00f1o<\/td>\n<\/tr>\n
Un intervalo m\u00e1s estrecho<\/td>\nEl plano que lo exige y el estado superficial al que se aplica<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
El l\u00edmite del producto tambi\u00e9n importa: ASTM B348 define la barra como una secci\u00f3n maciza de 16 square inches, 10 323 square millimetres, o menos de \u00e1rea transversal, con barra rectangular de no m\u00e1s de 10 inches, 254 millimetres, de ancho y m\u00e1s de 0.1875 inch, 4.8 millimetres, de espesor (ASTM B348, terminolog\u00eda). Una entrada de la tabla de tolerancias de barra no se aplica al tocho. En la pr\u00e1ctica de suministro de Beiyu, las bandas m\u00e1s estrechas ofertadas en esta p\u00e1gina corresponden al proceso de barra rectificada sin centros de precisi\u00f3n y se confirman para el di\u00e1metro y el estado superficial solicitados antes de fijar el precio.<\/p>\n
Env\u00ede una solicitud de oferta t\u00e9cnica<\/h2>\n
Para las solicitudes de oferta de barras de titanio, incluya la calidad, la norma, el di\u00e1metro solicitado, la tolerancia expresada como clase con su dimensi\u00f3n o como valor positivo y negativo, el estado superficial, la longitud, la cantidad y el certificado de materiales requerido.<\/p>\n
Enviar detalles de la solicitud de oferta<\/a><\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"
A tolerance is not one number for the whole bar range Diameter tolerance depends on how the bar was finished and on the diameter itself. Asking for a single figure across a size range usually produces a quotation that does not mean what the buyer thought it meant. What changes the achievable tolerance The surface […]<\/p>\n","protected":false},"author":2,"featured_media":5271,"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 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":""}},"footnotes":""},"categories":[27,137],"tags":[],"class_list":["post-5431","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","category-technical-guides"],"yoast_head":"\nTitanium Bar Diameter Tolerance: Value or ISO Class<\/title>\n<meta name=\"description\" content=\"A diameter tolerance is not one number across a size range. 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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\":\"es-ES\",\"@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\\\/es\\\/author\\\/penn-ma\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Tolerancia del di\u00e1metro de barras de titanio: valor o clase ISO","description":"Una tolerancia de di\u00e1metro no es un \u00fanico valor para todo un rango de tama\u00f1os. 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La producci\u00f3n se realiza en la f\u00e1brica de titanio de Beiyu en Baoji, Shaanxi. Los pedidos se basan en solicitudes de oferta, con certificados de inspecci\u00f3n 3.1 seg\u00fan EN 10204 y trazabilidad por n\u00famero de colada disponibles a petici\u00f3n.","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":"es-ES","@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 es la persona que responde a las solicitudes de oferta en Beiyu Titanium. Durante m\u00e1s de 15 a\u00f1os de exportaci\u00f3n de titanio, ha aprendido a revisar personalmente cada l\u00ednea de especificaci\u00f3n, comprobando calidad, norma, dimensiones, tolerancia y alcance del certificado frente a la capacidad de la f\u00e1brica antes de emitir una oferta, en lugar de canalizar las consultas a trav\u00e9s de un departamento comercial. Lleg\u00f3 al suministro de titanio desde el otro lado de la transacci\u00f3n. Antes de dirigir el negocio internacional de Beiyu, trabaj\u00f3 en Koch (Koch-Glitsch) y particip\u00f3 directamente en la entrega de un proyecto petroqu\u00edmico de SABIC en Fujian, China. Ese trabajo se basaba en planes de inspecci\u00f3n y ensayo, certificaci\u00f3n de materiales y trazabilidad por n\u00famero de colada, coordinaci\u00f3n de inspecci\u00f3n por tercera parte y control de la documentaci\u00f3n y los expedientes del proyecto. Esas son las mismas cuatro cosas que un comprador de la industria de procesos o regulada exigir\u00e1 a un proveedor de titanio, y haber tenido que aplicarlas como cliente es la raz\u00f3n por la que aqu\u00ed se tratan como parte del suministro y no como documentaci\u00f3n elaborada posteriormente. Su trabajo diario abarca las cuestiones que este sitio est\u00e1 concebido para responder: elegir entre calidades de titanio comercialmente puro y aleado para un servicio corrosivo, interpretar un certificado de materiales frente a la norma solicitada y relacionar la designaci\u00f3n de un comprador (calidad ASTM, UNS, n\u00famero Werkstoff alem\u00e1n o c\u00f3digo NF franc\u00e9s) con el mismo metal en distintos mercados. Beiyu suministra productos de f\u00e1brica de titanio, aleaciones de n\u00edquel y materiales refractarios en barra, varilla, chapa gruesa, tubo, bloque, anillo, bobina, lingote, piezas forjadas y piezas mecanizadas, con documentaci\u00f3n EN 10204 3.1 y trazabilidad por n\u00famero de colada.","url":"https:\/\/beiyutitanium.com\/es\/author\/penn-ma\/"}]}},"_links":{"self":[{"href":"https:\/\/beiyutitanium.com\/es\/wp-json\/wp\/v2\/posts\/5431","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/beiyutitanium.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/beiyutitanium.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/beiyutitanium.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/beiyutitanium.com\/es\/wp-json\/wp\/v2\/comments?post=5431"}],"version-history":[{"count":2,"href":"https:\/\/beiyutitanium.com\/es\/wp-json\/wp\/v2\/posts\/5431\/revisions"}],"predecessor-version":[{"id":5495,"href":"https:\/\/beiyutitanium.com\/es\/wp-json\/wp\/v2\/posts\/5431\/revisions\/5495"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/beiyutitanium.com\/es\/wp-json\/wp\/v2\/media\/5271"}],"wp:attachment":[{"href":"https:\/\/beiyutitanium.com\/es\/wp-json\/wp\/v2\/media?parent=5431"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/beiyutitanium.com\/es\/wp-json\/wp\/v2\/categories?post=5431"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/beiyutitanium.com\/es\/wp-json\/wp\/v2\/tags?post=5431"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}