{"id":4393,"date":"2026-06-11T01:07:38","date_gmt":"2026-06-11T01:07:38","guid":{"rendered":"https:\/\/beiyutitanium.com\/titanium-bar-grade-selection-guide\/"},"modified":"2026-08-18T04:38:23","modified_gmt":"2026-08-18T04:38:23","slug":"titanium-bar-grade-selection-guide","status":"publish","type":"post","link":"https:\/\/beiyutitanium.com\/es\/titanium-bar-grade-selection-guide\/","title":{"rendered":"Elecci\u00f3n entre barra de titanio Grade 2 y Grade 5 para compras"},"content":{"rendered":"<style>\n      .by-c118-bar-grade {\n        --c118-blue: #087eb5;\n        --c118-navy: #0a3268;\n        --c118-ink: #24364d;\n        --c118-muted: #607087;\n        --c118-line: #dce4ed;\n        --c118-soft: #f3f7fa;\n        color: var(--c118-ink);\n        font-size: 16px;\n        line-height: 1.72;\n      }\n      .by-c118-bar-grade,\n      .by-c118-bar-grade * { box-sizing: border-box; }\n      .by-c118-bar-grade a { color: var(--c118-blue); }\n      .by-c118-bar-grade .c118-main-column p a,\n      .by-c118-bar-grade .c118-main-column li a,\n      .by-c118-bar-grade .c118-lead-intro a {\n        text-decoration: underline;\n        text-underline-offset: 3px;\n      }\n      .by-c118-bar-grade .c118-lead-intro {\n        color: var(--c118-ink);\n        font-size: 18px;\n        margin: 0;\n        padding: 0 20px 28px;\n      }\n      .by-c118-bar-grade .c118-answer-band {\n        background: var(--c118-navy);\n        color: #fff;\n        padding: 38px 20px;\n      }\n      .by-c118-bar-grade .c118-answer-inner {\n        display: grid;\n        gap: 26px;\n        grid-template-columns: 1fr 1fr;\n        margin: 0 auto;\n        max-width: 1130px;\n      }\n      .by-c118-bar-grade .c118-answer-inner > h2 {\n        color: #fff;\n        font-size: 24px;\n        line-height: 1.25;\n        margin: 0;\n        grid-column: 1 \/ -1;\n      }\n      .by-c118-bar-grade .c118-answer-choice {\n        border-left: 1px solid rgba(255, 255, 255, .28);\n        padding-left: 26px;\n      }\n      .by-c118-bar-grade .c118-answer-choice h3 {\n        color: #b9e7ff;\n        font-size: 18px;\n        margin: 0 0 8px;\n      }\n      .by-c118-bar-grade .c118-answer-choice p { margin: 0; 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}\n        .by-c118-bar-grade .c118-product-links,\n        .by-c118-bar-grade .c118-sidebar { grid-template-columns: 1fr; }\n        .by-c118-bar-grade .c118-rfq-list { columns: 1; }\n      }\n      @media (prefers-reduced-motion: reduce) {\n        .by-c118-bar-grade .c118-product-link { transition: none; }\n      }\n    <\/style>\n<div class=\"by-c118-bar-grade\">\n<p class=\"c118-lead-intro\">La barra Grade 2 es el punto de partida habitual cuando el servicio frente a la corrosi\u00f3n, el conformado o la soldadura determinan la elecci\u00f3n. La barra Grade 5 es la opci\u00f3n de mayor resistencia para piezas mecanizadas sometidas a carga. El plano, el entorno de servicio, la condici\u00f3n suministrada y la norma aplicable determinan la elecci\u00f3n entre ambas, por lo que detengo una solicitud de oferta que indique \u00fanicamente ASTM B348 y solicito la informaci\u00f3n faltante.<\/p>\n<section class=\"c118-answer-band\" aria-labelledby=\"direct-answer-title\">\n<div class=\"c118-answer-inner\">\n<h2 id=\"direct-answer-title\">\u00bfBarra Grade 2 o Grade 5?<\/h2>\n<div class=\"c118-answer-choice\">\n<h3>Comience con Grade 2<\/h3>\n<p>Utilice la calidad comercialmente pura cuando el dise\u00f1o aprobado est\u00e9 determinado por el servicio frente a la corrosi\u00f3n, el conformado o la soldadura. Indique el medio, la temperatura y la ruta de fabricaci\u00f3n.<\/p>\n<\/p><\/div>\n<div class=\"c118-answer-choice\">\n<h3>Comience con Grade 5<\/h3>\n<p>Utilice Ti-6Al-4V cuando el plano requiera la aleaci\u00f3n de mayor resistencia para una pieza mecanizada sometida a carga. Indique la condici\u00f3n de la barra y la norma indicada en el plano.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n<section class=\"c118-content-shell\">\n<article class=\"c118-main-column\">\n<p class=\"c118-eyebrow\">Notas sobre barras de titanio<\/p>\n<h2 id=\"comparison\">Qu\u00e9 cambia en la l\u00ednea de pedido<\/h2>\n<p>Grade 2 es titanio comercialmente puro. Grade 5 es Ti-6Al-4V con una base de aceptaci\u00f3n mec\u00e1nica diferente. ASTM B348 cubre barras y tochos, pero no selecciona la aleaci\u00f3n. Indique la calidad, el tama\u00f1o y la condici\u00f3n en la descripci\u00f3n de compra. Si un plano aprobado cita AMS 4928 para barra Grade 5, util\u00edcelo. De lo contrario, no incluyo AMS 4928 en la oferta. Consulte la <a href=\"https:\/\/beiyutitanium.com\/es\/astm-b348-titanium-bar-billet-guide\/\">gu\u00eda de barras y tochos ASTM B348<\/a> para la especificaci\u00f3n y la <a href=\"https:\/\/beiyutitanium.com\/es\/grade-2-vs-grade-5-titanium\/\">comparaci\u00f3n a nivel de material entre Grade 2 y Grade 5<\/a> para otras formas de producto.<\/p>\n<div class=\"c118-comparison-wrap\" role=\"region\" aria-label=\"Comparaci\u00f3n entre barras de titanio Grade 2 y Grade 5\" tabindex=\"0\">\n<table class=\"c118-comparison\">\n<thead>\n<tr>\n<th scope=\"col\">Punto de decisi\u00f3n<\/th>\n<th scope=\"col\">Barra Grade 2<\/th>\n<th scope=\"col\">Barra Grade 5<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<th scope=\"row\">Material<\/th>\n<td>Titanio comercialmente puro<\/td>\n<td>Aleaci\u00f3n Ti-6Al-4V<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">L\u00ednea de especificaci\u00f3n en el pedido<\/th>\n<td>ASTM B348, m\u00e1s el plano aprobado<\/td>\n<td>ASTM B348, o AMS 4928 cuando el plano lo requiera<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Lo que normalmente lo determina<\/th>\n<td>Servicio de corrosi\u00f3n, con conformado o soldadura posteriores<\/td>\n<td>Una trayectoria de carga dimensionada para Ti-6Al-4V<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Aceptaci\u00f3n de resistencia<\/th>\n<td>Utilice los m\u00ednimos de Grade 2 para la condici\u00f3n solicitada y la norma aplicable<\/td>\n<td>Utilice los m\u00ednimos de Grade 5 recocido salvo que el plano controle otra ruta<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Selecci\u00f3n para corrosi\u00f3n<\/th>\n<td>Revise el medio, la concentraci\u00f3n, la temperatura y los resquicios<\/td>\n<td>Una mayor resistencia no aprueba el servicio de corrosi\u00f3n<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Conformado y soldadura<\/th>\n<td>A menudo se revisan para fabricaci\u00f3n conformada o soldada<\/td>\n<td>Confirme el conformado y la soldadura con respecto al plano<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Lo que prev\u00e9 el taller de mecanizado<\/th>\n<td>Embarrado y filo recrecido en la herramienta de corte<\/td>\n<td>El calor permanece cerca del corte y aumenta el desgaste de la herramienta<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">D\u00f3nde suele terminar la barra<\/th>\n<td>Equipos fabricados, conjuntos soldados, piezas para servicio corrosivo<\/td>\n<td>Ejes, preformas para elementos de fijaci\u00f3n y otras piezas mecanizadas sometidas a carga<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Comprobaci\u00f3n comercial y de disponibilidad<\/th>\n<td>Confirme la secci\u00f3n, el tama\u00f1o, la condici\u00f3n, la cantidad y los documentos<\/td>\n<td>Normalmente ofrece precios m\u00e1s altos, confirme los mismos campos del pedido<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Campos de la solicitud de oferta que cambian<\/th>\n<td>Indique el servicio de corrosi\u00f3n, la fabricaci\u00f3n, las dimensiones y la inspecci\u00f3n<\/td>\n<td>Indique la base del plano, las dimensiones, la condici\u00f3n y la especificaci\u00f3n<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<p class=\"c118-table-note\">Tome los valores de aceptaci\u00f3n de la revisi\u00f3n de ASTM B348 indicada en el pedido y del plano aprobado. Nuestra <a href=\"https:\/\/beiyutitanium.com\/es\/astm-b348-titanium-bar-billet-guide\/\">gu\u00eda de barras y tochos ASTM B348<\/a> summarizes the standard&#8217;s structure; it is not an acceptance document, and values must not be copied between sizes, conditions or product forms.<\/p>\n<h2>Resistencia, dureza y condici\u00f3n de la barra<\/h2>\n<p>Grade 5 tiene el nivel de resistencia m\u00e1s alto, por lo que aparece en piezas mecanizadas portantes en lugar de como una mejora general de Grade 2. El di\u00e1metro, la condici\u00f3n de suministro y la tabla de la norma aplicable controlan la aceptaci\u00f3n. El plano sigue siendo responsable de la carga.<\/p>\n<table data-c189=\"1\">\n<thead>\n<tr>\n<th>Calidad<\/th>\n<th>Qu\u00e9 indica la gu\u00eda<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Grade 2<\/td>\n<td>Utilice la calidad comercialmente pura cuando el dise\u00f1o aprobado est\u00e9 determinado por el servicio corrosivo, el conformado o la soldadura<\/td>\n<\/tr>\n<tr>\n<td>Grade 5<\/td>\n<td>Ofrece el nivel de resistencia m\u00e1s alto, por lo que se utiliza en piezas mecanizadas que soportan cargas y no como una mejora general de Grade 2<\/td>\n<\/tr>\n<tr>\n<td>Grade 23<\/td>\n<td>La variante de Ti-6Al-4V con contenido extrabajo de intersticiales. Una calidad distinta con sus propios l\u00edmites de intersticiales y requisitos de aceptaci\u00f3n seg\u00fan la norma de barras indicada en el pedido<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>La ruta ASTM B348 Grade 5 tratada aqu\u00ed utiliza una base de aceptaci\u00f3n recocida. <a href=\"https:\/\/beiyutitanium.com\/es\/ams-4928-titanium-bar\/\">AMS 4928<\/a> tambi\u00e9n cubre barra, alambre, piezas forjadas y anillos de Ti-6Al-4V recocido. Un requisito STA necesita su propia especificaci\u00f3n de tratamiento t\u00e9rmico o una indicaci\u00f3n en plano aprobada; no lo a\u00f1ada a una l\u00ednea de especificaci\u00f3n recocida. Si la dureza es un elemento de aceptaci\u00f3n, indique el m\u00e9todo de ensayo y el rango. El taller tambi\u00e9n necesita la condici\u00f3n de suministro y el margen de mecanizado.<\/p>\n<p>Grade 2 tiende a embadurnar el filo de corte y puede acumular material en la herramienta. Grade 5 mantiene m\u00e1s calor cerca del corte y normalmente aumenta el riesgo de desgaste de la herramienta. La <a href=\"https:\/\/beiyutitanium.com\/es\/machining-titanium-bar-stock-guide\/\">gu\u00eda de mecanizado de barras de titanio<\/a> abarca la discusi\u00f3n sobre el corte; esta p\u00e1gina no prescribe velocidades, avances ni vida \u00fatil de la herramienta.<\/p>\n<h2>Las condiciones de servicio detr\u00e1s de una consulta de barra Grade 2<\/h2>\n<p>&#8220;Chemical service&#8221; still leaves the specification blank. I ask for the medium, concentration and temperature, then whether exposure is continuous or cyclic. Wet-dry duty differs from a flooded line. Crevices, deposits and dissimilar-metal contact change the review again. Load stays on the drawing. Grade 2 often comes up for corrosion-service parts that will be formed or welded, subject to the approved design. Welding needs clean titanium practice and adequate inert gas shielding. Put post-weld requirements in the drawing or qualified procedure.<\/p>\n<table data-c189=\"1\">\n<thead>\n<tr>\n<th>Qu\u00e9 solicita la revisi\u00f3n<\/th>\n<th>Qu\u00e9 indica la gu\u00eda<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Medio, concentraci\u00f3n y temperatura<\/td>\n<td>&#8220;Chemical service&#8221; still leaves the specification blank<\/td>\n<\/tr>\n<tr>\n<td>Si la exposici\u00f3n es continua o c\u00edclica<\/td>\n<td>El servicio con alternancia de humedad y sequedad difiere de una l\u00ednea inundada<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>La barra Grade 5 y el plano que la respalda<\/h2>\n<p>Un plano completado que especifica Ti-6Al-4V resuelve la cuesti\u00f3n de la aleaci\u00f3n. La revisi\u00f3n pasa a la revisi\u00f3n de la norma, el estado, la superficie, las dimensiones y la inspecci\u00f3n. En un plano sin terminar, Grade 5 utilizado como margen general a\u00f1ade dificultad de mecanizado y conformado mientras la cuesti\u00f3n de la corrosi\u00f3n sigue abierta. El dise\u00f1ador debe aceptar esa contrapartida antes de que comience el corte. Una solicitud para sustituir Grade 5 por Grade 2 tambi\u00e9n vuelve a ingenier\u00eda porque la pieza fue dise\u00f1ada en torno a un nivel de resistencia diferente.<\/p>\n<h2>El coste y la disponibilidad corresponden a la l\u00ednea de pedido exacta<\/h2>\n<p>La barra Grade 5 normalmente se cotiza por encima de Grade 2 cuando el tama\u00f1o, el estado y la cantidad son iguales. La diferencia no es una relaci\u00f3n fija; la secci\u00f3n y el alcance documental la modifican. Compruebe existencias para la misma combinaci\u00f3n. Un precio inferior no autoriza una sustituci\u00f3n. Si ingenier\u00eda acepta otra calidad, revise el plano o la descripci\u00f3n de compra antes de realizar el pedido.<\/p>\n<table data-c189=\"1\">\n<thead>\n<tr>\n<th>Punto<\/th>\n<th>Qu\u00e9 indica la gu\u00eda<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Precio relativo<\/td>\n<td>La barra Grade 5 normalmente se oferta por encima de Grade 2 cuando el tama\u00f1o, el estado y la cantidad son iguales<\/td>\n<\/tr>\n<tr>\n<td>Cu\u00e1nto m\u00e1s<\/td>\n<td>La diferencia no es una proporci\u00f3n fija; la secci\u00f3n y el alcance documental la modifican<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div class=\"c118-caution\">\n          <strong>La sustituci\u00f3n vuelve a pasar por ingenier\u00eda<\/strong><\/p>\n<p>Neither grade drops into the other&#8217;s place, and the mill certificate cannot close the gap. The certificate confirms what was supplied against the order that was placed. It carries no authority over a change that never went back to the drawing.<\/p>\n<\/p><\/div>\n<h2>Si ni Grade 2 ni Grade 5 son adecuados<\/h2>\n<p>Dos opciones de aleaciones para corrosi\u00f3n quedan fuera de esta comparaci\u00f3n. Cuando una revisi\u00f3n de corrosi\u00f3n descarta la barra comercialmente pura para el medio en cuesti\u00f3n, la siguiente revisi\u00f3n puede pasar a <a href=\"https:\/\/beiyutitanium.com\/es\/grade-7-titanium-reducing-acids\/\">Grade 7 para servicio con \u00e1cidos reductores<\/a> o <a href=\"https:\/\/beiyutitanium.com\/es\/grade-12-titanium-hot-brine-crevice-corrosion\/\">Grade 12 para salmuera caliente y condiciones de resquicio<\/a>. La <a href=\"https:\/\/beiyutitanium.com\/es\/titanium-grades-comparison-guide\/\">tabla de calidades de titanio<\/a> incluye la comparaci\u00f3n completa entre calidades.<\/p>\n<h2>D\u00f3nde Grade 23 se aparta de la ruta Grade 5<\/h2>\n<p>Grade 23 is the extra-low-interstitial Ti-6Al-4V variant. It is a distinct grade with its own interstitial limits and acceptance requirements under the bar standard named on the order, or under the medical specification when the approved drawing calls for one. The supplier should not treat &#8220;ELI&#8221; as a casual synonym for Grade 5 or quote it against an ordinary Grade 5 line. Implant, medical or other ELI requirements should be checked against the approved drawing and the <a href=\"https:\/\/beiyutitanium.com\/es\/grade-23-titanium\/\">Ficha t\u00e9cnica de titanio Grade 23<\/a>.<\/p>\n<h2 id=\"rfq\">Las l\u00edneas que devuelvo en una solicitud de oferta de barra incompleta<\/h2>\n<p>Dos calidades solo pueden cotizarse entre s\u00ed cuando ambas l\u00edneas se basan en los mismos supuestos, por lo que una consulta incompleta normalmente vuelve al comprador antes de llegar a la f\u00e1brica. Lo que solicito:<\/p>\n<ul class=\"c118-rfq-list\">\n<li>Calidad y norma aplicable, con la revisi\u00f3n si el plano indica una<\/li>\n<li>Forma y secci\u00f3n de la barra: di\u00e1metro, entre caras, o anchura y espesor<\/li>\n<li>Longitud de corte, y si ya incluye sobrematerial para serrado y refrentado<\/li>\n<li>Estado de suministro y ruta de superficie<\/li>\n<li>Cantidad desglosada por tama\u00f1o en lugar de un peso total \u00fanico<\/li>\n<li>Aplicaci\u00f3n y entorno de servicio<\/li>\n<li>Sobrematerial de mecanizado cuando la pieza se corta de la barra<\/li>\n<li>Alcance de inspecci\u00f3n y NDT<\/li>\n<li>Tipo de certificado y trazabilidad por n\u00famero de colada o lote<\/li>\n<li>Requisitos de marcado<\/li>\n<li>Destino, condiciones de entrega y embalaje<\/li>\n<\/ul>\n<p>The words &#8220;standard tolerance&#8221; do not settle diameter, cut length, straightness, surface route or finish-machining allowance. Those lines belong in the order, and the <a href=\"https:\/\/beiyutitanium.com\/es\/titanium-bar-forms-sizes-tolerances-guide\/\">gu\u00eda de formas, tama\u00f1os y tolerancias de barras<\/a> les proporciona un lugar independiente sin copiar cifras de una oferta no relacionada.<\/p>\n<p>Un plano responde a m\u00e1s aspectos de esto de lo que puede hacerlo un p\u00e1rrafo. La <a href=\"https:\/\/beiyutitanium.com\/es\/machining-titanium-bar-stock-guide\/\">gu\u00eda de mecanizado de barras de titanio<\/a> abarca el corte y el sobrematerial cuando el taller todav\u00eda est\u00e1 eligiendo material de partida. Utilice la <a href=\"https:\/\/beiyutitanium.com\/es\/titanium-bar-rfq-checklist\/\">lista de comprobaci\u00f3n para solicitud de oferta de barra de titanio<\/a> antes de enviar el correo electr\u00f3nico. Env\u00ede el plano y las condiciones de servicio a <a href=\"mailto:penn@beiyutitanium.com?subject=Titanium%20Bar%20RFQ\">penn@beiyutitanium.com<\/a> y responder\u00e9 sobre las l\u00edneas que todav\u00eda est\u00e9n abiertas.<\/p>\n<div class=\"c118-product-links\">\n          <a class=\"c118-product-link\" href=\"https:\/\/beiyutitanium.com\/es\/product\/grade-2-titanium-bar\/\"><br \/>\n            <img decoding=\"async\" src=\"https:\/\/beiyutitanium.com\/wp-content\/uploads\/2026\/05\/grade2-titanium-bar-astm-b348-rack-main-20260613.jpg\" alt=\"Grade 2 commercially pure titanium round bars\"><br \/>\n            <span><strong>Barra de titanio Grade 2<\/strong><small>Barra comercialmente pura cotizada conforme al pedido<\/small><\/span><br \/>\n          <\/a><br \/>\n          <a class=\"c118-product-link\" href=\"https:\/\/beiyutitanium.com\/es\/product\/6al4v-titanium-bar\/\"><br \/>\n            <img decoding=\"async\" src=\"https:\/\/beiyutitanium.com\/wp-content\/uploads\/2026\/03\/ti-6al4v-grade5-titanium-bar-ams4928.jpg\" alt=\"Grade 5 Ti-6Al-4V titanium round bar\"><br \/>\n            <span><strong>Barra de titanio Grade 5<\/strong><small>Barra Ti-6Al-4V conforme a la especificaci\u00f3n del pedido<\/small><\/span><br \/>\n          <\/a>\n        <\/div>\n<\/article>\n<aside class=\"c118-sidebar\">\n<div class=\"c118-side-block\">\n<p class=\"c118-eyebrow\">Antes de la liberaci\u00f3n<\/p>\n<h3>Lea el certificado frente al pedido<\/h3>\n<p>Los resultados de inspecci\u00f3n y la identidad de colada o lote deben corresponder a la calidad, la norma y el estado solicitados por el comprador. El documento no corrige una descripci\u00f3n de compra incompleta.<\/p>\n<\/p><\/div>\n<div class=\"c118-side-block\">\n<h3>Referencias de barras<\/h3>\n<p>          <a href=\"https:\/\/beiyutitanium.com\/es\/astm-b348-titanium-bar-billet-guide\/\">gu\u00eda de barras y tochos ASTM B348<\/a><br \/>\n          <a href=\"https:\/\/beiyutitanium.com\/es\/machining-titanium-bar-stock-guide\/\">Mecanizado de material en barra de titanio<\/a><br \/>\n          <a href=\"https:\/\/beiyutitanium.com\/es\/titanium-bar-forms-sizes-tolerances-guide\/\">Formas, tama\u00f1os y tolerancias de barra<\/a><br \/>\n          <a href=\"https:\/\/beiyutitanium.com\/es\/titanium-bar-rfq-checklist\/\">Lista de comprobaci\u00f3n para solicitud de oferta de barra de titanio<\/a><br \/>\n          <a href=\"https:\/\/beiyutitanium.com\/es\/titanium-grades-comparison-guide\/\">Tabla de calidades de titanio<\/a>\n        <\/div>\n<div class=\"c118-side-cta\">\n<h3>Env\u00ede el plano<\/h3>\n<p>Penn revisa las consultas sobre barras de titanio para Beiyu. Incluya las condiciones de servicio cuando la l\u00ednea de calidad todav\u00eda est\u00e9 abierta.<\/p>\n<p>          <a class=\"c118-button\" href=\"mailto:penn@beiyutitanium.com?subject=Titanium%20Bar%20RFQ\">Enviar un correo electr\u00f3nico a Penn<\/a>\n        <\/div>\n<\/aside>\n<\/section><\/div>\n<p><!--c143-cite-block--><\/p>\n<h2>Qu\u00e9 deja a\u00fan pendiente en el pedido la calidad seleccionada<\/h2>\n<p>Elegir la calidad resuelve la metalurgia. No resuelve los cuatro campos que determinan si la barra puede mecanizarse tal como se entrega, y una gu\u00eda de selecci\u00f3n que se limita a la calidad deja que el comprador los descubra en la recepci\u00f3n.<\/p>\n<table>\n<thead>\n<tr>\n<th>Campo que la calidad no determina<\/th>\n<th>Qu\u00e9 controla<\/th>\n<th>D\u00f3nde corresponde<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Tolerancia de di\u00e1metro<\/td>\n<td>Si la barra puede introducirse directamente en una pinza<\/td>\n<td>Indicado con el di\u00e1metro, como clase o valor<\/td>\n<\/tr>\n<tr>\n<td>Rectitud<\/td>\n<td>Alimentaci\u00f3n, vibraciones y comportamiento del cargador de barras<\/td>\n<td>Un valor con la longitud de medici\u00f3n a la que se aplica<\/td>\n<\/tr>\n<tr>\n<td>Condici\u00f3n superficial<\/td>\n<td>Sobremetal de mecanizado y eliminaci\u00f3n de la capa alfa<\/td>\n<td>Indicada por separado del estado de suministro<\/td>\n<\/tr>\n<tr>\n<td>Alcance de los ensayos<\/td>\n<td>Qu\u00e9 se inspecciona y conforme a qu\u00e9 clase de aceptaci\u00f3n<\/td>\n<td>Indicado en el pedido, no supuesto<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Qu\u00e9 publica Beiyu sobre la ruta de barras rectificadas de precisi\u00f3n<\/h2>\n<p>Estos valores se aplican al proceso documentado de rectificado sin centros que abarca di\u00e1metros de 3,175 mm a 25,4 mm. Constituyen una capacidad de producci\u00f3n frente a la que se eval\u00faan los requisitos, no una declaraci\u00f3n de existencias, y la combinaci\u00f3n solicitada se confirma al preparar la oferta.<\/p>\n<table>\n<thead>\n<tr>\n<th>Campo<\/th>\n<th>Valor publicado<\/th>\n<th>Reducida a<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Tolerancia de di\u00e1metro<\/td>\n<td>&plusmn;0,0127 mm (&plusmn;0,0005 in)<\/td>\n<td>&plusmn;0,0076 mm bajo petici\u00f3n<\/td>\n<\/tr>\n<tr>\n<td>Rectitud<\/td>\n<td>0,5 mm por metro<\/td>\n<td>0,3 mm por metro en di\u00e1metros de hasta 25 mm, un umbral distinto del l\u00edmite del proceso de 25,4 mm<\/td>\n<\/tr>\n<tr>\n<td>Examen<\/td>\n<td>Ultrasonidos, corrientes inducidas, inspecci\u00f3n \u00f3ptica de superficie, di\u00e1metro por l\u00e1ser y rectitud, cada uno en el 100 por ciento del lote<\/td>\n<td>Clase de aceptaci\u00f3n indicada en el pedido<\/td>\n<\/tr>\n<tr>\n<td>Certificado<\/td>\n<td>Certificado de inspecci\u00f3n 3.1 seg\u00fan EN 10204 con trazabilidad por n\u00famero de colada<\/td>\n<td>Alcance de la informaci\u00f3n documentada fijado por el pedido<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Estos controles corresponden al programa de precisi\u00f3n ofertado y no se extienden a todo el intervalo de barras redondas de 1 mm a 500 mm. Una calidad bien elegida y un proceso sin especificar siguen dando lugar a una oferta que no sirve para el plano.<\/p>\n<h2>Detalles de especificaci\u00f3n con fuentes<\/h2>\n<p>Los datos de propiedades del ASM Handbook y las <a href=\"https:\/\/store.astm.org\/standards\/b348\" target=\"_blank\" rel=\"noopener\">ASTM B348<\/a> acceptance tables make the Grade 2 versus Grade 5 titanium bar decision concrete. On strength, B348 sets annealed Grade 5 bar at 828 MPa minimum yield against 275 MPa for Grade 2, 3 times the acceptance floor; on mass, the handbook densities sit within 2 percent of each other at 4.51 g\/cm&sup3; for Grade 2 and 4.43 g\/cm&sup3; for Ti-6Al-4V, so nearly the whole 3-to-1 strength advantage survives on a per-kilogram basis. On heat, ASM Handbook thermal-conductivity values place Ti-6Al-4V near 6.7 W\/m&middot;K against roughly 16 to 22 W\/m&middot;K for the commercially pure grades, which is the measured property behind this page&#8217;s note that Grade 5 keeps cutting heat concentrated at the tool edge.<\/p>\n<p>Beiyu Titanium quotes both grades from one bar envelope, round bar from 1 to 500 mm diameter in lengths to 6,000 mm with tolerance classes h6 to h9 and H6 to H9 on request, so a Grade 2 line and a Grade 5 line can be priced side by side at the same section, length and condition. In Beiyu&#8217;s supply practice the two grades travel as 2 separate order lines, each stating grade, condition and section, because a certificate issued against one line cannot be read across to the other.<\/p>\n<p><!--\/c143-cite-block--><\/p>","protected":false},"excerpt":{"rendered":"<p>Grade 2 bar is the usual starting point when corrosion service, forming or welding drives the choice. Grade 5 bar is the higher-strength route for loaded machined parts. The drawing, service environment, supplied condition and governing standard decide between them, so I stop an RFQ that names only ASTM B348 and ask for the missing [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":4231,"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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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-4393","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","category-technical-guides"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Grade 2 vs Grade 5 Titanium Bar: Selection Guide | Beiyu<\/title>\n<meta name=\"description\" content=\"Choose Grade 2 or Grade 5 titanium bar by service, strength, fabrication, machining, condition and RFQ requirements, with ASTM B348 ordering context.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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