{"id":2619,"date":"2025-09-18T01:36:06","date_gmt":"2025-09-18T01:36:06","guid":{"rendered":"https:\/\/greenyellow-gerbil-196913.hostingersite.com\/?post_type=product&#038;p=2619"},"modified":"2025-09-18T01:39:44","modified_gmt":"2025-09-18T01:39:44","slug":"large-square-billet-300x300mm-q345b","status":"publish","type":"product","link":"https:\/\/baosteelmaterials.com\/es\/producto\/large-square-billet-300x300mm-q345b\/","title":{"rendered":"Palanquilla cuadrada grande 300x300mm Q345B"},"content":{"rendered":"<table>\n<thead>\n<tr>\n<th>Par\u00e1metro<\/th>\n<th>Valor<\/th>\n<th>Observaciones<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Est\u00e1ndar<\/strong><\/td>\n<td>GB\/T 1591-2008<\/td>\n<td>Norma de acero estructural de alta resistencia y baja aleaci\u00f3n<\/td>\n<\/tr>\n<tr>\n<td><strong>Grado<\/strong><\/td>\n<td>Q345B<\/td>\n<td>Prueba de impacto a 20\u2103<\/td>\n<\/tr>\n<tr>\n<td><strong>Composici\u00f3n qu\u00edmica (wt%)<\/strong><\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>- Carbono (C)<\/td>\n<td>\u22640.20<\/td>\n<td>Para garantizar la soldabilidad y conformabilidad de los tochos de gran secci\u00f3n<\/td>\n<\/tr>\n<tr>\n<td>- Silicio (Si)<\/td>\n<td>\u22640.55<\/td>\n<td>Ayuda a la desoxidaci\u00f3n e influye en las propiedades de resistencia y tenacidad<\/td>\n<\/tr>\n<tr>\n<td>- Manganeso (Mn)<\/td>\n<td>\u22641.70<\/td>\n<td>Mejora la resistencia y la tenacidad en toda la secci\u00f3n gruesa<\/td>\n<\/tr>\n<tr>\n<td>- F\u00f3sforo (P)<\/td>\n<td>\u22640.040<\/td>\n<td>Se mantiene a un nivel bajo para evitar la fragilizaci\u00f3n en palanquillas grandes<\/td>\n<\/tr>\n<tr>\n<td>- Azufre (S)<\/td>\n<td>\u22640.040<\/td>\n<td>Minimizado para reducir el riesgo de agrietamiento durante el procesamiento<\/td>\n<\/tr>\n<tr>\n<td>- Niobio (Nb)<\/td>\n<td>\u22640.07<\/td>\n<td>Elemento de microaleaci\u00f3n para el refinamiento del grano y la mejora de las propiedades mec\u00e1nicas<\/td>\n<\/tr>\n<tr>\n<td>- Vanadio (V)<\/td>\n<td>\u22640.15<\/td>\n<td>Ayuda a reforzar y mejorar la resistencia al calor en secciones gruesas<\/td>\n<\/tr>\n<tr>\n<td>- Titanio (Ti)<\/td>\n<td>\u22640.20<\/td>\n<td>Ayuda a mejorar la tenacidad y la estabilidad estructural<\/td>\n<\/tr>\n<tr>\n<td>- Nitr\u00f3geno (N)<\/td>\n<td>\u22640.012<\/td>\n<td>Controlado para evitar problemas como la porosidad y la fragilizaci\u00f3n<\/td>\n<\/tr>\n<tr>\n<td><strong>Propiedades mec\u00e1nicas<\/strong><\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>- L\u00edmite el\u00e1stico (ReL)<\/td>\n<td>\u2265345 MPa<\/td>\n<td>Para la gama de espesores pertinente aplicable a la secci\u00f3n de 300x300 mm; ajustado seg\u00fan los requisitos de la norma.<\/td>\n<\/tr>\n<tr>\n<td>- Resistencia a la tracci\u00f3n (Rm)<\/td>\n<td>470 - 630 MPa<\/td>\n<td>Garantiza la capacidad de soportar cargas pesadas en aplicaciones estructurales<\/td>\n<\/tr>\n<tr>\n<td>- Alargamiento (A)<\/td>\n<td>\u226521%<\/td>\n<td>Proporciona la ductilidad necesaria para la fabricaci\u00f3n y el funcionamiento<\/td>\n<\/tr>\n<tr>\n<td>- Energ\u00eda de impacto (Akv)<\/td>\n<td>\u226534 J<\/td>\n<td>A 20\u2103 (esp\u00e9cimen longitudinal), importante para resistir impactos repentinos y mantener la integridad.<\/td>\n<\/tr>\n<tr>\n<td>- Prueba de flexi\u00f3n<\/td>\n<td>180\u00b0<\/td>\n<td>Di\u00e1metro de curvatura: 3a (donde \"a\" representa la longitud del lado del tocho cuadrado o la dimensi\u00f3n pertinente, aqu\u00ed para tocho de 300x300mm)<\/td>\n<\/tr>\n<tr>\n<td><strong>Dimensiones<\/strong><\/td>\n<td>300 x 300 mm (secci\u00f3n cuadrada)<\/td>\n<td>Dimensi\u00f3n nominal; con m\u00e1rgenes de tolerancia admisibles seg\u00fan las normas de fabricaci\u00f3n.<\/td>\n<\/tr>\n<tr>\n<td><strong>Longitud<\/strong><\/td>\n<td>Normalmente 6 - 12 m (personalizable)<\/td>\n<td>Longitudes de entrega est\u00e1ndar, adaptables a las necesidades espec\u00edficas del proyecto<\/td>\n<\/tr>\n<tr>\n<td><strong>Calidad de la superficie<\/strong><\/td>\n<td>Debe estar libre de grietas, defectos superficiales significativos, como ara\u00f1azos profundos, y una escala de oxidaci\u00f3n excesiva.<\/td>\n<td>Garantizar la idoneidad para otras fases de procesamiento como la forja, el laminado, etc.<\/td>\n<\/tr>\n<tr>\n<td><strong>Condiciones de entrega<\/strong><\/td>\n<td>Laminado en caliente, normalizado o TMCP (Thermo-Mechanical Control Process)<\/td>\n<td>En funci\u00f3n de los requisitos espec\u00edficos para optimizar las propiedades mec\u00e1nicas y las necesidades de fabricaci\u00f3n<\/td>\n<\/tr>\n<tr>\n<td><strong>Aplicaciones t\u00edpicas<\/strong><\/td>\n<td>Componentes estructurales para grandes puentes, bastidores de maquinaria industrial pesada, tochos de fabricaci\u00f3n de tuber\u00edas de gran di\u00e1metro, estructuras de cimentaci\u00f3n para edificios de gran altura y componentes para recipientes a presi\u00f3n de gran tama\u00f1o.<\/td>\n<td>Ideal para aplicaciones que exigen materiales de acero de gran tama\u00f1o, alta resistencia y buena trabajabilidad.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>","protected":false},"excerpt":{"rendered":"<p>El tocho cuadrado grande 300x300mm Q345B es un acero estructural de baja aleaci\u00f3n y alto rendimiento dise\u00f1ado para satisfacer los requisitos m\u00e1s exigentes de las infraestructuras a gran escala, la maquinaria pesada y la fabricaci\u00f3n industrial. Conforme a las normas GB\/T 1591-2008, este tocho cuadrado de 300x300 mm combina una resistencia, una estabilidad dimensional y una procesabilidad excepcionales, lo que lo convierte en la piedra angular de megaproyectos en los que la fiabilidad y la integridad estructural no son negociables.<\/p>","protected":false},"featured_media":2570,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false,"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":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"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":""},"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-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":"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":""},"mobile":{"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":""}}},"product_brand":[],"product_cat":[27],"product_tag":[],"class_list":["post-2619","product","type-product","status-publish","has-post-thumbnail","product_cat-square-billets","desktop-align-left","tablet-align-left","mobile-align-left","first","instock","shipping-taxable","product-type-simple"],"acf":[],"_links":{"self":[{"href":"https:\/\/baosteelmaterials.com\/es\/wp-json\/wp\/v2\/product\/2619","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/baosteelmaterials.com\/es\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/baosteelmaterials.com\/es\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/baosteelmaterials.com\/es\/wp-json\/wp\/v2\/comments?post=2619"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/baosteelmaterials.com\/es\/wp-json\/wp\/v2\/media\/2570"}],"wp:attachment":[{"href":"https:\/\/baosteelmaterials.com\/es\/wp-json\/wp\/v2\/media?parent=2619"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/baosteelmaterials.com\/es\/wp-json\/wp\/v2\/product_brand?post=2619"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/baosteelmaterials.com\/es\/wp-json\/wp\/v2\/product_cat?post=2619"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/baosteelmaterials.com\/es\/wp-json\/wp\/v2\/product_tag?post=2619"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}