{"id":165,"date":"2018-01-03T09:47:15","date_gmt":"2018-01-03T06:47:15","guid":{"rendered":"https:\/\/metallsmaster.ru\/?p=165"},"modified":"2020-11-02T12:00:49","modified_gmt":"2020-11-02T09:00:49","slug":"stal","status":"publish","type":"post","link":"https:\/\/metallsmaster.pro\/es\/acero\/","title":{"rendered":"Acero: propiedades, marcados, normas GOST y tipos de acero."},"content":{"rendered":"<p>El acero, como uno de los metales m\u00e1s comunes, ha recibido la aplicaci\u00f3n m\u00e1s amplia en la actualidad. Procesamiento y <a href=\"https:\/\/metallsmaster.pro\/es\/todo-tipo-de-corte-de-metales\/\">corte<\/a> Este material es una tarea que puede resolverse utilizando una amplia variedad de herramientas y tecnolog\u00edas. <strong>Propiedades del acero <\/strong>permitir un procesamiento preciso y de alta velocidad utilizando los siguientes tipos de procesamiento:<\/p>\n<ul>\n<li><a href=\"https:\/\/metallsmaster.pro\/es\/gilotina-po-metallu\/\">corte mec\u00e1nico<\/a>;<\/li>\n<li>chorro de agua;<\/li>\n<li><a href=\"https:\/\/metallsmaster.pro\/es\/soldadura-por-arco-de-argon\/\">arco de arg\u00f3n<\/a>;<\/li>\n<li><a href=\"https:\/\/metallsmaster.pro\/es\/soldadura-por-arco-electrico-de-metal\/\">arco voltaico<\/a>;<\/li>\n<li><a href=\"https:\/\/metallsmaster.pro\/es\/equipo-de-corte-de-gas\/\">gas<\/a>;<\/li>\n<li><a href=\"https:\/\/metallsmaster.pro\/es\/corte-por-arco-de-plasma\/\">plasma<\/a>;<\/li>\n<li><a href=\"https:\/\/metallsmaster.pro\/es\/corte-por-laser\/\">l\u00e1ser<\/a>.<\/li>\n<\/ul>\n<p>Dependiendo de <strong>grados de acero<\/strong> y los resultados requeridos, utilice la tecnolog\u00eda de procesamiento de metales m\u00e1s adecuada.<\/p>\n<h2>Propiedades del acero<\/h2>\n<p>\n\t<!--<div class='top-banner-pages'>\t\n\n\t<\/div>--->\n\t<br \/>\nHay 4 \u00e1reas principales de indicadores que distinguen al acero y sus aleaciones.<\/p>\n<p>Entre estas \u00e1reas:<\/p>\n<ul>\n<li>Propiedades qu\u00edmicas del acero;<\/li>\n<li>tecnol\u00f3gico;<\/li>\n<li>propiedades mec\u00e1nicas del acero;<\/li>\n<li>Propiedades magn\u00e9ticas del acero.<\/li>\n<\/ul>\n<p>Ahora hablemos de cada uno con m\u00e1s detalle.<\/p>\n<h3>Propiedades qu\u00edmicas del acero<\/h3>\n<ul>\n<li><strong>Oxidabilidad.<\/strong>\u00a0Esta es una medida de la capacidad de combinarse con el ox\u00edgeno. La oxidaci\u00f3n aumenta con el aumento de la temperatura del metal. Los aceros con bajo contenido de carbono se oxidan para formar \u00f3xido (\u00f3xidos de hierro) al exponerse al agua o al aire h\u00famedo.<\/li>\n<li><strong>Resistencia a la corrosi\u00f3n.\u00a0<\/strong>Por lo tanto, esto significa que la sustancia no experimenta reacciones qu\u00edmicas ni se oxida. Sin embargo, es importante destacar que esta propiedad no se encuentra en todas las aleaciones de acero y es m\u00e1s caracter\u00edstica de grados excepcionales.<\/li>\n<li><strong>Resistencia al calor.<\/strong>\u00a0La resistencia al calor caracteriza la capacidad de un material de no oxidarse bajo la influencia de altas temperaturas y no formar incrustaciones;<\/li>\n<li><strong>Resistencia al calor.<\/strong>\u00a0La resistencia al calor determina la capacidad de una aleaci\u00f3n para mantener su resistencia a altas temperaturas. Esto permite utilizar el acero en la creaci\u00f3n de componentes y mecanismos sujetos a estr\u00e9s t\u00e9rmico.<\/li>\n<\/ul>\n<h3>\n<!---<div class='top-banner-pages'>\n\n<\/div>-->\n\n\t<\/h3>\n<h3>Propiedades tecnol\u00f3gicas del acero<\/h3>\n<p>Las propiedades tecnol\u00f3gicas del acero reflejan la capacidad de un metal o aleaci\u00f3n para someterse a diversos tipos de procesamiento. Estos incluyen:<\/p>\n<ul>\n<li>Maquinabilidad. Todos los aceros son bastante f\u00e1ciles de mecanizar, tanto a mano (con sierra para metales, cincel o lima) como con m\u00e1quinas herramienta (taladrado, torneado o fresado).<\/li>\n<li>Maleabilidad. Esta propiedad se tiene en cuenta durante el laminado, la forja y la estampaci\u00f3n. El acero presenta una maleabilidad bastante buena al calentarse.<\/li>\n<li>Soldabilidad. Este proceso es aplicable a todo tipo de acero.<\/li>\n<li>Fluidez. Esta propiedad es esencial para producir productos semiacabados: piezas fundidas que se asemejan a piezas terminadas y que solo requieren un mecanizado adicional m\u00ednimo.<\/li>\n<li>Templabilidad. La templabilidad depende del tama\u00f1o de las piezas y productos, as\u00ed como de la composici\u00f3n qu\u00edmica del acero. Para aumentarla, se a\u00f1aden al acero componentes de aleaci\u00f3n como el cromo y el tungsteno.<\/li>\n<li>Resistencia al desgaste. Para aumentar la resistencia al desgaste, las piezas de fricci\u00f3n (dientes de engranaje) se someten a un tratamiento t\u00e9rmico (templado) y un tratamiento qu\u00edmico-t\u00e9rmico (carburaci\u00f3n, nitruraci\u00f3n). Con el mismo fin, se a\u00f1aden al acero elementos de aleaci\u00f3n como el manganeso y el silicio.<\/li>\n<li>Resistencia a la corrosi\u00f3n. Para aumentar esta resistencia, se a\u00f1aden n\u00edquel, cromo y titanio al acero, obteniendo as\u00ed los llamados aceros inoxidables.<\/li>\n<\/ul>\n<h3>Propiedades mec\u00e1nicas del acero<\/h3>\n<ul>\n<li><strong>Fortaleza.<\/strong>\u00a0La capacidad de un metal para soportar cargas externas significativas. Esta propiedad se caracteriza por su l\u00edmite el\u00e1stico y su resistencia a la tracci\u00f3n.\n<ul>\n<li><strong>Resistencia a la tracci\u00f3n.<\/strong>\u00a0La tensi\u00f3n mec\u00e1nica m\u00e1xima por encima de la cual el acero falla.<\/li>\n<li><strong>L\u00edmite el\u00e1stico.<\/strong>\u00a0Este par\u00e1metro muestra la tensi\u00f3n mec\u00e1nica por encima de la cual el material contin\u00faa alarg\u00e1ndose en condiciones sin carga.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Pl\u00e1stico.<\/strong>\u00a0La capacidad de cambiar de forma bajo carga y mantenerla sin carga. Se cuantifica mediante el alargamiento relativo y el \u00e1ngulo de flexi\u00f3n.<\/li>\n<li><strong>Tenacidad al impacto.<\/strong>\u00a0La capacidad de un metal para resistir cargas din\u00e1micas. Esta caracter\u00edstica se eval\u00faa cuantitativamente mediante el trabajo necesario para fracturar una muestra, dividido entre su \u00e1rea de secci\u00f3n transversal.<\/li>\n<li><strong>Dureza.<\/strong>\u00a0Capacidad de resistir el impacto de objetos s\u00f3lidos. Se caracteriza cuantitativamente por la carga por \u00e1rea de la indentaci\u00f3n al presionarla con una pir\u00e1mide de diamante (m\u00e9todo Vickers) o una bola de acero (m\u00e9todo Brinell).<\/li>\n<\/ul>\n<h3>Propiedades magn\u00e9ticas del acero<\/h3>\n<p>Como es sabido, casi todos los aceros (excepto algunos aceros inoxidables) son magn\u00e9ticos.<\/p>\n<blockquote><p>Vale la pena decir de inmediato que el acero inoxidable es realmente magn\u00e9tico.<\/p><\/blockquote>\n<p>No todo el acero inoxidable es magn\u00e9tico, pero s\u00ed lo es. No hay una afirmaci\u00f3n definitiva, ya que las propiedades magn\u00e9ticas de las aleaciones se determinan por las propiedades de sus componentes estructurales. Por lo tanto, un tipo de acero inoxidable puede atraer un im\u00e1n con \u00e9xito, mientras que otro es completamente indiferente. Entonces, \u00bfc\u00f3mo funciona?<\/p>\n<p>Todo es cuesti\u00f3n de la composici\u00f3n estructural.<\/p>\n<p class=\"font_8\">La martensita, desde el punto de vista de las propiedades magn\u00e9ticas, es un ferroim\u00e1n puro.<\/p>\n<p class=\"font_8\">La ferrita puede presentar dos modificaciones. A temperaturas inferiores al punto de Curie, al igual que la martensita, es ferromagn\u00e9tica. La ferrita delta de alta temperatura es paramagn\u00e9tica.<\/p>\n<p class=\"font_8\">Por lo tanto, los aceros resistentes a la corrosi\u00f3n cuya estructura consiste en martensita se denominan aceros inoxidables magn\u00e9ticos. Estas aleaciones reaccionan a un im\u00e1n como el acero al carbono com\u00fan. Los aceros ferr\u00edticos o ferr\u00edtico-martens\u00edticos pueden presentar diferentes propiedades seg\u00fan la proporci\u00f3n de sus componentes de fase, pero suelen ser ferromagn\u00e9ticos.<\/p>\n<p>Como resultado, el cromo y algunas aleaciones de acero inoxidable al cromo-n\u00edquel se consideran magn\u00e9ticos.<\/p>\n<p>Las aleaciones no magn\u00e9ticas incluyen aceros al cromo-n\u00edquel y al cromo-manganeso-n\u00edquel.<\/p>\n<p>Es bastante f\u00e1cil determinar si el acero con el que se est\u00e1 tratando es acero inoxidable genuino. Limpie la superficie hasta que brille y luego aplique y frote dos o tres gotas de una soluci\u00f3n concentrada de sulfato de cobre. Si la capa de cobre se transparenta (el sulfato se convierte en una capa de cobre), no es acero inoxidable. Si no hay cambios ni impactos, se trata de acero inoxidable genuino.<\/p>\n<blockquote><p>Es importante tener en cuenta que es imposible determinar en casa si el acero inoxidable es apto para uso alimentario.<\/p><\/blockquote>\n<p>Por lo tanto, no se deben utilizar metales no probados para los utensilios de cocina.<\/p>\n<h4>Un poco m\u00e1s sobre las propiedades de los aceros.<\/h4>\n<p>El uso generalizado del metal se debe a diversas caracter\u00edsticas ventajosas. Entre ellas se encuentran las siguientes: <strong>Propiedades del acero:<\/strong><\/p>\n<ul>\n<li>Capacidad calor\u00edfica espec\u00edfica a 20 \u00b0C: 462 J\/(kg \u00b0C) (110 cal\/(kg \u00b0C));<\/li>\n<li>Densidad: 7700-7900 kg\/m\u00b3;<\/li>\n<li>Punto de fusi\u00f3n: 1450-1520 \u00b0C;<\/li>\n<li>Gravedad espec\u00edfica: 75500-77500 N\/m\u00b3 (7700-7900 kgf\/m\u00b3 en el sistema MKGSS);<\/li>\n<li>Calor espec\u00edfico de fusi\u00f3n: 84 kJ\/kg (20 kcal\/kg, 23 W h\/kg);<\/li>\n<li>El coeficiente de conductividad t\u00e9rmica var\u00eda dependiendo del tipo de acero y de las impurezas en su composici\u00f3n y puede oscilar entre 15,5 W\/(m K) y 54,4 W\/(m K);<\/li>\n<li>El coeficiente de expansi\u00f3n lineal t\u00e9rmica est\u00e1 dentro del rango de 11,9 \u00b7 10<sup>-6 <\/sup>1\/<sup>0<\/sup>De 11.0 a 10<sup>-6 <\/sup>1\/<sup>0<\/sup>C y depende de la marca y componentes adicionales de la aleaci\u00f3n.<\/li>\n<\/ul>\n<p>La resistencia a la tracci\u00f3n se determina para cada tipo de acero por separado y tiene los siguientes indicadores, que se detallan a continuaci\u00f3n:<\/p>\n<ul>\n<li>Estructural 373-412 MPa;<\/li>\n<li>Silicio-cromo-manganeso, utilizado en la producci\u00f3n de herramientas 1,52 GPa;<\/li>\n<li>Ingenier\u00eda de carbono 314-785 MPa;<\/li>\n<li>Riel 690-785 MPa.<\/li>\n<\/ul>\n<p>Las propiedades del material tambi\u00e9n var\u00edan seg\u00fan el contenido de carbono. Existen las siguientes: <strong>tipos de acero<\/strong>:<\/p>\n<ul>\n<li>bajo en carbono (menos de 0,25% de carbono);<\/li>\n<li>carbono medio (0,3 \u2013 0,551 carbono TP3T);<\/li>\n<li>alto contenido de carbono (0,6 \u2013 2% carbono).<\/li>\n<\/ul>\n<p>Para aumentar la utilidad del acero, se realiza una aleaci\u00f3n: la adici\u00f3n de metales al acero fundido altera las propiedades de la aleaci\u00f3n (aumentando la resistencia mec\u00e1nica, la conductividad el\u00e9ctrica, la resistencia a la corrosi\u00f3n y la conductividad magn\u00e9tica y t\u00e9rmica). Se utilizan molibdeno, aluminio, cromo, n\u00edquel y otros metales de aleaci\u00f3n. Se distinguen los siguientes: <strong>tipos de acero<\/strong> aleado:<\/p>\n<ul>\n<li>Baja aleaci\u00f3n: inclusiones de metales de aleaci\u00f3n no superiores a 4%;<\/li>\n<li>Aleaci\u00f3n media: los metales de aleaci\u00f3n no constituyen m\u00e1s que inclusiones 11%;<\/li>\n<li>Alta aleaci\u00f3n: m\u00e1s de 11%.<\/li>\n<\/ul>\n<h3>Grados de acero<\/h3>\n<p><strong>Marcado de acero seg\u00fan GOST<\/strong> se produce por designaci\u00f3n de letras. Gracias al orden de las reglas de designaci\u00f3n, es posible conocer y leer <strong>marcas de acero <\/strong>No es una tarea dif\u00edcil con tales designaciones. Hay varias designaciones establecidas que se utilizan. <strong>calificaci\u00f3n<\/strong> <strong>acero<\/strong> <strong>Por<\/strong> <strong>GOST<\/strong>:<\/p>\n<ul>\n<li>H \u2013 n\u00edquel;<\/li>\n<li>M \u2013 molibdeno;<\/li>\n<li>T \u2013 titanio;<\/li>\n<li>X \u2013 cromo;<\/li>\n<li>K \u2013 cobalto;<\/li>\n<li>B \u2013 tungsteno;<\/li>\n<li>T \u2013 titanio;<\/li>\n<li>D \u2013 cobre;<\/li>\n<li>G \u2013 manganeso;<\/li>\n<li>C \u2013 silicio;<\/li>\n<li>F \u2013 vanadio;<\/li>\n<li>R \u2013 boro;<\/li>\n<li>A \u2013 nitr\u00f3geno;<\/li>\n<li>B \u2013 niobio;<\/li>\n<li>E \u2013 selenio;<\/li>\n<li>C \u2013 circonio;<\/li>\n<li>U \u2013 aluminio;<\/li>\n<li>\u0427 \u2013 significa la presencia de metales de tierras raras.<\/li>\n<\/ul>\n<p>Para designar los diferentes tipos en funci\u00f3n de la composici\u00f3n y finalidad del acero se utilizan las siguientes series de designaciones de letras:<\/p>\n<ul>\n<li>PS \u2013 semi-calma;<\/li>\n<li>KP \u2013 hirviendo;<\/li>\n<li>SP \u2013 calma.<\/li>\n<\/ul>\n<p>En consecuencia, al ver las designaciones antes mencionadas en el marcado de la aleaci\u00f3n, podemos determinar su composici\u00f3n y comprender qu\u00e9 tipo de material tenemos delante de nosotros.<\/p>\n<p>Una buena ayuda ser\u00eda la mesa de marcado de acero.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-1278 aligncenter\" src=\"https:\/\/metallsmaster.pro\/wp-content\/uploads\/2018\/01\/\u0442\u0430\u0431\u043b\u0438\u0446\u0430-\u043c\u0430\u0440\u043a\u0438\u0440\u043e\u0432\u043a\u0438-\u0441\u0442\u0430\u043b\u0438.png\" alt=\"\" width=\"295\" height=\"171\" srcset=\"https:\/\/metallsmaster.pro\/wp-content\/uploads\/2018\/01\/\u0442\u0430\u0431\u043b\u0438\u0446\u0430-\u043c\u0430\u0440\u043a\u0438\u0440\u043e\u0432\u043a\u0438-\u0441\u0442\u0430\u043b\u0438.png 295w, https:\/\/metallsmaster.pro\/wp-content\/uploads\/2018\/01\/\u0442\u0430\u0431\u043b\u0438\u0446\u0430-\u043c\u0430\u0440\u043a\u0438\u0440\u043e\u0432\u043a\u0438-\u0441\u0442\u0430\u043b\u0438-254x147.png 254w\" sizes=\"auto, (max-width: 295px) 100vw, 295px\" \/><strong><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-168 size-full aligncenter\" src=\"https:\/\/metallsmaster.pro\/wp-content\/uploads\/2018\/01\/20_main.webp\" alt=\"aplicaci\u00f3n del acero\" width=\"660\" height=\"325\" srcset=\"https:\/\/metallsmaster.pro\/wp-content\/uploads\/2018\/01\/20_main.webp 660w, https:\/\/metallsmaster.pro\/wp-content\/uploads\/2018\/01\/20_main-300x148.webp 300w, https:\/\/metallsmaster.pro\/wp-content\/uploads\/2018\/01\/20_main-254x125.webp 254w\" sizes=\"auto, (max-width: 660px) 100vw, 660px\" \/><\/strong><\/p>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>El acero, como uno de los metales m\u00e1s comunes, ha recibido la aplicaci\u00f3n m\u00e1s amplia hoy en d\u00eda...<\/p>","protected":false},"author":1,"featured_media":166,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-165","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-metalls"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0421\u0442\u0430\u043b\u044c, \u0435\u0435 \u0442\u0438\u043f\u044b \u0438 \u0445\u0430\u0440\u0430\u043a\u0442\u0435\u0440\u0438\u0441\u0442\u0438\u043a\u0438, \u043e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u043e\u0441\u043d\u043e\u0432\u043d\u044b\u0445 \u0441\u0432\u043e\u0439\u0441\u0442\u0432 \u0434\u0430\u043d\u043d\u043e\u0433\u043e \u043c\u0435\u0442\u0430\u043b\u043b\u0430 \u0438 \u0435\u0433\u043e \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0430, \u043f\u0440\u0438\u043d\u0446\u0438\u043f\u044b 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