{"id":14770,"date":"2026-04-22T10:10:05","date_gmt":"2026-04-22T02:10:05","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=14770"},"modified":"2026-06-25T10:09:31","modified_gmt":"2026-06-25T02:09:31","slug":"440c-stainless-steel-properties","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/es\/440c-stainless-steel-properties\/","title":{"rendered":"Propiedades, composici\u00f3n, dureza, propiedades mec\u00e1nicas y usos del acero inoxidable 440C"},"content":{"rendered":"<section class=\"aobo-440c-properties-page\">\n  <style>\n    .aobo-440c-properties-page {\n      --aobo-blue: #0c56d0;\n      --aobo-blue-dark: #073b8e;\n      --aobo-blue-soft: #eaf2ff;\n      --aobo-border: #d7e5fb;\n      --aobo-text: #203044;\n      --aobo-muted: #617087;\n      --aobo-orange: #f59b23;\n      --aobo-white: #ffffff;\n      --aobo-shadow: 0 18px 45px rgba(12, 86, 208, 0.10);\n      --aobo-page-width: 1180px;\n      font-family: inherit;\n      color: var(--aobo-text);\n      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class=\"aobo-wrap\">\n    <header class=\"aobo-hero\">\n      <span class=\"aobo-eyebrow\">Propiedades del acero inoxidable 440C<\/span>\n      <h1>Propiedades del acero inoxidable 440C<\/h1>\n      <p>El acero inoxidable martens\u00edtico 440C, con alto contenido de carbono y cromo, est\u00e1 dise\u00f1ado para ofrecer la m\u00e1xima dureza y resistencia al desgaste entre los aceros resistentes a la corrosi\u00f3n. Tras un tratamiento t\u00e9rmico adecuado, alcanza hasta 60 HRC y se utiliza habitualmente entre 57 y 60 HRC, lo que le confiere una gran resistencia a la abrasi\u00f3n, al desgaste de los bordes y a la deformaci\u00f3n superficial bajo cargas de contacto.<\/p>\n      <p>Su alto contenido de carbono tambi\u00e9n implica baja ductilidad y resistencia al impacto limitada. Esto convierte al 440C en un material para piezas sometidas principalmente al desgaste bajo cargas estables, no para cargas de impacto ni para uso estructural. Todo lo que se menciona en esta p\u00e1gina se deriva de esta limitaci\u00f3n, por lo que conviene interpretar las propiedades como un equilibrio, en lugar de como una lista de ventajas.<\/p>\n    <\/header>\n\n    <main class=\"aobo-article\">\n      <section class=\"aobo-supply-block\" aria-label=\"Informaci\u00f3n sobre el producto y consultas relacionadas con el acero inoxidable 440C.\">\n        <div class=\"aobo-supply-image\">\n          <img decoding=\"async\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/04\/440C.avif\" alt=\"Acero inoxidable 440C suministrado por Aobo Steel.\" loading=\"lazy\">\n        <\/div>\n        <div class=\"aobo-supply-content\">\n          <h2>\u00bfNecesita acero 440C en barra o placa recocida?<\/h2>\n          <p>Aobo Steel dispone de acero inoxidable 440C con especificaciones industriales, listo para mecanizado y tratamiento t\u00e9rmico. Env\u00edenos sus medidas para obtener un presupuesto o consulte primero nuestra gama de productos est\u00e1ndar.<\/p>\n          <div class=\"aobo-supply-actions\">\n            <a class=\"aobo-btn aobo-btn-primary popmake-16052\" href=\"javascript:void(0);\">Enviar consulta<\/a>\n            <a class=\"aobo-btn aobo-btn-secondary\" href=\"https:\/\/aobosteel.com\/es\/440c-stainless-steel\/\">Ver detalles de suministro de 440C<\/a>\n          <\/div>\n        <\/div>\n      <\/section>\n\n      <h2>Composici\u00f3n qu\u00edmica del acero inoxidable 440C<\/h2>\n      <p>La composici\u00f3n del acero 440C (UNS S44004) est\u00e1 dise\u00f1ada para equilibrar la templabilidad, la formaci\u00f3n de carburos y la resistencia a la corrosi\u00f3n \u00fatil.<\/p>\n      <p>Composici\u00f3n t\u00edpica (wt%):<\/p>\n      <div class=\"aobo-table-wrap\">\n        <table class=\"aobo-table\">\n          <thead>\n            <tr><th>Elemento<\/th><th>Contenido (%)<\/th><\/tr>\n          <\/thead>\n          <tbody>\n            <tr><td>Carbono (C)<\/td><td>0,95 a 1,20<\/td><\/tr>\n            <tr><td>Cromo (Cr)<\/td><td>De 16:00 a 18:00<\/td><\/tr>\n            <tr><td>Molibdeno (Mo)<\/td><td>0,75 m\u00e1x.<\/td><\/tr>\n            <tr><td>Manganeso (Mn)<\/td><td>1,00 m\u00e1x.<\/td><\/tr>\n            <tr><td>Silicio (Si)<\/td><td>1,00 m\u00e1x.<\/td><\/tr>\n            <tr><td>F\u00f3sforo (P)<\/td><td>0,040 m\u00e1x.<\/td><\/tr>\n            <tr><td>Azufre (S)<\/td><td>0,030 m\u00e1x.<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n      <p>Los altos niveles de carbono y cromo generan una matriz martens\u00edtica con un gran volumen de carburos ricos en cromo. Esta estructura es la responsable de la dureza, la resistencia al desgaste y la resistencia a la compresi\u00f3n, y tambi\u00e9n explica su baja tenacidad. Analizar el resto de estas propiedades a trav\u00e9s de la estructura de los carburos es la forma m\u00e1s r\u00e1pida de comprender el acero 440C.<\/p>\n\n      <h2>440A vs 440B vs 440C: C\u00f3mo el carbono cambia la calidad<\/h2>\n      <p>La familia 440 comparte una base de cromo y se diferencia principalmente por su contenido de carbono. El carbono controla la dureza que puede alcanzar el grado y la tenacidad que se pierde.<\/p>\n      <div class=\"aobo-table-wrap\">\n        <table class=\"aobo-table\">\n          <thead>\n            <tr><th>Grado<\/th><th>Carbono (%)<\/th><th>Dureza m\u00e1xima<\/th><th>Resistencia al desgaste<\/th><th>Resistencia relativa<\/th><\/tr>\n          <\/thead>\n          <tbody>\n            <tr><td>440A<\/td><td>0,60 a 0,75<\/td><td>56 HRC<\/td><td>Medio<\/td><td>M\u00e1s alto<\/td><\/tr>\n            <tr><td>440B<\/td><td>0,75 a 0,95<\/td><td>58 HRC<\/td><td>De medio a alto<\/td><td>Medio<\/td><\/tr>\n            <tr><td>440 \u00b0C<\/td><td>0,95 a 1,20<\/td><td>60 HRC<\/td><td>Alta<\/td><td>M\u00e1s bajo<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n      <p>Un mayor contenido de carbono forma carburos ricos en cromo, que aumentan la dureza y la resistencia al desgaste, pero reducen la ductilidad y la resistencia al impacto. El acero 440A es la opci\u00f3n ideal cuando la resistencia a la corrosi\u00f3n y la tenacidad son m\u00e1s importantes que la vida \u00fatil del filo. El acero 440C es la opci\u00f3n ideal cuando la dureza y la resistencia al desgaste son prioritarias y la pieza puede dise\u00f1arse con una tenacidad limitada. El acero 440B se sit\u00faa entre ambos.<\/p>\n\n      <h2>Grados equivalentes al acero inoxidable 440C<\/h2>\n      <div class=\"aobo-table-wrap\">\n        <table class=\"aobo-table\">\n          <thead>\n            <tr><th>Sistema est\u00e1ndar<\/th><th>Designaci\u00f3n<\/th><\/tr>\n          <\/thead>\n          <tbody>\n            <tr><td>AISI \/ SAE<\/td><td>440 \u00b0C \/ 51440 \u00b0C<\/td><\/tr>\n            <tr><td>ONU<\/td><td>S44004<\/td><\/tr>\n            <tr><td>EN \/ DIN<\/td><td>1.4125<\/td><\/tr>\n            <tr><td>Nombre EN<\/td><td>X105CrMo17<\/td><\/tr>\n            <tr><td>ASTM<\/td><td>A276 (Barras y formas)<\/td><\/tr>\n            <tr><td>Metalurgia de polvos<\/td><td>MIM 440C<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n      <p>El grado EN 1.4125 (X105CrMo17) es el equivalente europeo m\u00e1s cercano al AISI 440C, con un rango de carbono de aproximadamente 0,95 a 1,20% y un rango de cromo de 16 a 18%.<\/p>\n\n      <h2>Propiedades mec\u00e1nicas del acero inoxidable 440C<\/h2>\n      <p>El comportamiento mec\u00e1nico del acero 440C var\u00eda notablemente entre el estado recocido y el endurecido. En la pr\u00e1ctica, se suministra recocido para su mecanizado y posteriormente se somete a un tratamiento t\u00e9rmico para alcanzar su rendimiento final.<\/p>\n      <div class=\"aobo-table-wrap\">\n        <table class=\"aobo-table\">\n          <thead>\n            <tr><th>Propiedad<\/th><th>Estado recocido<\/th><th>Estado endurecido y templado<\/th><\/tr>\n          <\/thead>\n          <tbody>\n            <tr><td>Dureza<\/td><td>Aproximadamente 230 HB (270 HB m\u00e1ximo)<\/td><td>57 a 60 HRC<\/td><\/tr>\n            <tr><td>Resistencia a la tracci\u00f3n<\/td><td>Aproximadamente 758 MPa<\/td><td>Aproximadamente 1970 MPa<\/td><\/tr>\n            <tr><td>l\u00edmite el\u00e1stico<\/td><td>Aproximadamente de 430 a 450 MPa<\/td><td>Aproximadamente de 1896 a 1900 MPa<\/td><\/tr>\n            <tr><td>Alargamiento<\/td><td>13 a 14%<\/td><td>Acerca de 2%<\/td><\/tr>\n            <tr><td>Reducci\u00f3n de \u00e1rea<\/td><td>Acerca de 25%<\/td><td>Acerca de 10%<\/td><\/tr>\n            <tr><td>Resistencia (entalla en V Charpy)<\/td><td>No se suele informar<\/td><td>De 3 a 5 ft\u00b7lbf<\/td><\/tr>\n            <tr><td>Maquinabilidad<\/td><td>Acerca del 40% (frente al AISI 1212)<\/td><td>Muy pobre<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n      <p>El m\u00f3dulo de elasticidad es de aproximadamente 200 GPa, similar al de la mayor\u00eda de los aceros y no un factor de selecci\u00f3n. Tras el tratamiento t\u00e9rmico, el acero adquiere una resistencia y dureza muy elevadas, mientras que la ductilidad y la resistencia al impacto disminuyen. Los valores de elongaci\u00f3n 2% y los bajos valores de Charpy son los datos clave: el acero 440C soporta bien la carga, pero no la redistribuye, por lo que la falla bajo sobrecarga o impacto es repentina en lugar de gradual.<\/p>\n\n      <h2>Descripci\u00f3n general del tratamiento t\u00e9rmico del acero inoxidable 440C<\/h2>\n      <p>El rendimiento del acero 440C depende en gran medida del tratamiento t\u00e9rmico. Su dureza, resistencia al desgaste y estabilidad dimensional se logran mediante un endurecimiento y revenido controlados.<\/p>\n      <div class=\"aobo-table-wrap\">\n        <table class=\"aobo-table\">\n          <thead>\n            <tr><th>Proceso<\/th><th>Temperatura<\/th><th>Prop\u00f3sito clave<\/th><\/tr>\n          <\/thead>\n          <tbody>\n            <tr><td>Recocido<\/td><td>845 a 900 \u00b0C<\/td><td>Estructura blanda para el mecanizado<\/td><\/tr>\n            <tr><td>Precalentamiento<\/td><td>Aproximadamente 790 \u00b0C (varios pasos para piezas grandes)<\/td><td>Reduzca el estr\u00e9s t\u00e9rmico y la distorsi\u00f3n.<\/td><\/tr>\n            <tr><td>Austenitizaci\u00f3n<\/td><td>De 1010 a 1065 \u00b0C (hasta 1095 \u00b0C)<\/td><td>Disuelve los carburos y permite el endurecimiento.<\/td><\/tr>\n            <tr><td>Enfriamiento<\/td><td>Aire o aceite<\/td><td>Formar martensita y alcanzar dureza<\/td><\/tr>\n            <tr><td>Tratamiento bajo cero<\/td><td>Aproximadamente -75 \u00b0C o inferior<\/td><td>Reducir la austenita retenida<\/td><\/tr>\n            <tr><td>Templado<\/td><td>Entre 150 y 370 \u00b0C (t\u00edpicamente 315 \u00b0C)<\/td><td>Ajusta la dureza y alivia la tensi\u00f3n.<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n      <p>La temperatura de revenido es la principal variable de control para el resultado final. Para un desglose completo de los valores en estado templado versus revenido y por qu\u00e9 var\u00edan los n\u00fameros informados, consulte la <a href=\"https:\/\/aobosteel.com\/es\/440c-stainless-steel-hardened-hardness\/\">P\u00e1gina de dureza del endurecido 440C<\/a>.<\/p>\n\n      <h2>C\u00f3mo se traducen las propiedades del 440C en rendimiento<\/h2>\n      <p>Las propiedades principales solo importan en su contexto. En condiciones reales de uso, el comportamiento del acero 440C viene determinado por el equilibrio entre dureza, resistencia al desgaste, resistencia a la corrosi\u00f3n y tenacidad. Ninguna de estas propiedades puede considerarse de forma aislada, ya que la misma estructura de carburo que mejora una suele perjudicar otra.<\/p>\n\n      <h3>Resistencia al desgaste<\/h3>\n      <p>El acero 440C ofrece una alta resistencia al desgaste gracias a una matriz martens\u00edtica dura combinada con un alto volumen de carburos ricos en cromo. Con una dureza de 57-60 HRC, soporta tanto el desgaste adhesivo como el abrasivo. La matriz dura limita la deformaci\u00f3n superficial, la adhesi\u00f3n, el rayado y el agarrotamiento, mientras que los carburos resisten el corte y el arado durante el contacto deslizante o rodante. Por ello, el 440C mantiene una superficie y un filo estables durante m\u00e1s tiempo que la mayor\u00eda de los aceros inoxidables.<\/p>\n      <p>Los mismos carburos establecen el l\u00edmite. Cuando son gruesos o est\u00e1n distribuidos de forma irregular, crean puntos de tensi\u00f3n local que pueden iniciar microfisuras bajo contacto c\u00edclico o rodante. En esa situaci\u00f3n, el modo de fallo cambia de desgaste constante a fatiga superficial. El tratamiento a temperaturas bajo cero mejora la estabilidad dimensional al reducir la austenita retenida, pero no modifica este mecanismo. El acero 440C es fiable bajo carga estable, pero se vuelve menos predecible cuando la fatiga por contacto es el factor determinante.<\/p>\n\n      <h3>Resistencia a la corrosi\u00f3n<\/h3>\n      <p>El acero 440C ofrece una resistencia a la corrosi\u00f3n moderada y es adecuado para aplicaciones de servicio ligero, como exposici\u00f3n atmosf\u00e9rica, sistemas lubricados y condiciones industriales suaves. La limitaci\u00f3n reside, una vez m\u00e1s, en los carburos. Parte del cromo queda atrapado en los carburos y no puede sostener la capa de \u00f3xido pasiva, por lo que la pel\u00edcula protectora es m\u00e1s d\u00e9bil que en los aceros austen\u00edticos.<\/p>\n      <p>El tratamiento t\u00e9rmico modifica a\u00fan m\u00e1s esta propiedad. Las altas temperaturas de austenizaci\u00f3n ponen m\u00e1s aleaci\u00f3n en soluci\u00f3n y mejoran la resistencia a la corrosi\u00f3n, mientras que el revenido puede reducirla al alterar la composici\u00f3n local. Por lo tanto, la optimizaci\u00f3n del rendimiento mec\u00e1nico puede ir en detrimento de la estabilidad frente a la corrosi\u00f3n. El acero 440C no debe utilizarse en entornos ricos en cloruros, medios qu\u00edmicos agresivos ni en ambientes con alta temperatura de corrosi\u00f3n.<\/p>\n\n      <h3>Resistencia y comportamiento mec\u00e1nico<\/h3>\n      <p>En estado endurecido, el acero 440C es resistente pero de muy baja ductilidad, con una elongaci\u00f3n de aproximadamente 21 TP3T. Bajo carga, no puede redistribuir la tensi\u00f3n, por lo que, una vez que un punto local supera su l\u00edmite, la pieza falla con poca advertencia. Los modos de falla t\u00edpicos son el astillamiento de los bordes, la iniciaci\u00f3n de grietas en concentradores de tensi\u00f3n y la fractura fr\u00e1gil repentina por impacto o flexi\u00f3n. Estos se deben a la baja ductilidad y a que los carburos act\u00faan como iniciadores de grietas.<\/p>\n      <p>La conclusi\u00f3n pr\u00e1ctica es la misma para las tres propiedades. El acero 440C funciona bien cuando la carga es estable y est\u00e1 bien distribuida, pero se vuelve poco fiable cuando el impacto, el choque o la concentraci\u00f3n de tensiones determinan el resultado.<\/p>\n\n      <h2>Acero 440C frente a otros aceros inoxidables y para herramientas<\/h2>\n      <p>Elegir el acero 440C es m\u00e1s f\u00e1cil cuando se observa c\u00f3mo equilibra la dureza, la resistencia al desgaste, la resistencia a la corrosi\u00f3n y la tenacidad en comparaci\u00f3n con los aceros con los que suele competir.<\/p>\n      <div class=\"aobo-table-wrap\">\n        <table class=\"aobo-table\">\n          <thead>\n            <tr><th>Propiedad<\/th><th>440 \u00b0C<\/th><th>420<\/th><th>440A \/ 440B<\/th><th>D2<\/th><th>316<\/th><\/tr>\n          <\/thead>\n          <tbody>\n            <tr><td>Tipo de acero<\/td><td>Acero inoxidable martens\u00edtico<\/td><td>Acero inoxidable martens\u00edtico<\/td><td>Acero inoxidable martens\u00edtico<\/td><td>Acero para herramientas<\/td><td>Acero inoxidable austen\u00edtico<\/td><\/tr>\n            <tr><td>Dureza m\u00e1xima<\/td><td>Aproximadamente 60 HRC<\/td><td>46 a 54 HRC<\/td><td>56 a 58 HRC<\/td><td>60 a 62 HRC<\/td><td>No se puede endurecer<\/td><\/tr>\n            <tr><td>Resistencia al desgaste<\/td><td>Alta<\/td><td>Medio<\/td><td>Medio<\/td><td>Muy alto<\/td><td>Bajo<\/td><\/tr>\n            <tr><td>Resistencia a la corrosi\u00f3n<\/td><td>Medio<\/td><td>Medio<\/td><td>De medio a alto<\/td><td>Bajo<\/td><td>Excelente<\/td><\/tr>\n            <tr><td>Dureza<\/td><td>Bajo<\/td><td>Medio<\/td><td>Medio<\/td><td>Muy bajo<\/td><td>Alta<\/td><\/tr>\n            <tr><td>Maquinabilidad<\/td><td>Pobre<\/td><td>Moderado<\/td><td>Moderado<\/td><td>Pobre<\/td><td>Bien<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n      <p>El acero 440C equilibra la resistencia al desgaste con la resistencia a la corrosi\u00f3n. En comparaci\u00f3n con el 420 o el 440A, ofrece mayor dureza y una vida \u00fatil m\u00e1s prolongada. En comparaci\u00f3n con el D2, sacrifica algo de resistencia al desgaste en favor de un mejor rendimiento frente a la corrosi\u00f3n. En comparaci\u00f3n con el 316, ofrece mucha mayor resistencia y dureza, pero una resistencia a la corrosi\u00f3n mucho menor.<\/p>\n\n      <h2>Cu\u00e1ndo usar acero inoxidable 440C<\/h2>\n      <p>El acero 440C es el m\u00e1s adecuado para aplicaciones que requieren alta dureza y resistencia al desgaste, resistencia moderada a la corrosi\u00f3n y carga estable.<\/p>\n      <p>Es com\u00fan en herramientas de corte de precisi\u00f3n, como cuchillos, instrumental quir\u00fargico y hojas finas, donde la retenci\u00f3n del filo es fundamental. Ofrece un buen rendimiento en piezas de contacto rodante, como bolas y pistas de rodamientos, especialmente donde la resistencia a la corrosi\u00f3n supera la de los aceros para rodamientos est\u00e1ndar. En sistemas de fluidos, se utiliza para asientos de v\u00e1lvulas, v\u00e1lvulas de aguja y componentes de bombas que operan en agua dulce o fluidos industriales suaves. Tambi\u00e9n sirve como inserto de molde de pl\u00e1stico para pol\u00edmeros abrasivos o ligeramente corrosivos, donde la dureza superficial y la estabilidad dimensional son importantes. Para obtener un desglose completo por tipo de componente, consulte la p\u00e1gina de aplicaciones del 440C.<\/p>\n\n      <h2>Cu\u00e1ndo NO usar acero inoxidable 440C<\/h2>\n      <p>El acero 440C no es la opci\u00f3n adecuada cuando la tenacidad, la alta resistencia a la corrosi\u00f3n o la facilidad de fabricaci\u00f3n son los requisitos principales.<\/p>\n      <p>Su comportamiento ante impactos o flexiones es deficiente debido a su baja tenacidad, lo que lo hace inadecuado para piezas estructurales o sometidas a cargas din\u00e1micas. Su resistencia a la corrosi\u00f3n es limitada en ambientes ricos en cloruros o marinos, donde los aceros austen\u00edticos como el 316 son m\u00e1s fiables. Su alto contenido de carbono y su comportamiento de endurecimiento al aire dificultan la soldadura. Pierde dureza a temperaturas elevadas y no es apto para servicio a altas temperaturas. El mecanizado es dif\u00edcil incluso despu\u00e9s del recocido, y el desgaste de la herramienta es elevado, por lo que los aceros de f\u00e1cil mecanizado suelen ser m\u00e1s pr\u00e1cticos para piezas complejas o de gran volumen.<\/p>\n\n      <h2>Aplicaciones 440C basadas en propiedades<\/h2>\n      <p>El rango de aplicaciones se deriva directamente de la combinaci\u00f3n de alta dureza, resistencia al desgaste y resistencia moderada a la corrosi\u00f3n. El acero 440C se utiliza principalmente en piezas sometidas a fricci\u00f3n, contacto rodante o cargas superficiales repetidas, incluyendo cojinetes resistentes a la corrosi\u00f3n, componentes de v\u00e1lvulas, instrumentos de precisi\u00f3n, herramientas de corte y cuchillas industriales. Cuando se requiere tanto resistencia al desgaste como protecci\u00f3n b\u00e1sica contra la corrosi\u00f3n, se emplea en instrumentos m\u00e9dicos, equipos de procesamiento de alimentos y componentes selectos de la industria aeroespacial o petrolera. Los procesos de metalurgia de polvos, como el moldeo por inyecci\u00f3n de metal, se utilizan para producir piezas peque\u00f1as y complejas donde el mecanizado es ineficiente, incluyendo componentes automotrices de precisi\u00f3n, mecanismos de bloqueo y conjuntos miniatura resistentes al desgaste.<\/p>\n      <p>Debido a su baja tenacidad y limitada estabilidad t\u00e9rmica, el acero 440C generalmente se evita en aplicaciones estructurales, de alta temperatura y sometidas a cargas de impacto.<\/p>\n\n      <section class=\"aobo-related-pages\" aria-label=\"P\u00e1ginas relacionadas con el acero inoxidable 440C\">\n        <h2>P\u00e1ginas relacionadas<\/h2>\n        <div class=\"aobo-related-grid\">\n          <a class=\"aobo-related-card\" href=\"https:\/\/aobosteel.com\/es\/440c-stainless-steel-applications\/\">\n            <strong>Aplicaciones 440C<\/strong>\n            <span>Usos comunes del acero inoxidable 440C en funci\u00f3n de sus l\u00edmites de dureza, resistencia al desgaste, resistencia a la corrosi\u00f3n y tenacidad.<\/span>\n          <\/a>\n          <a class=\"aobo-related-card\" href=\"https:\/\/aobosteel.com\/es\/440c-stainless-steel-heat-treatment\/\">\n            <strong>Gu\u00eda de tratamiento t\u00e9rmico a 440 \u00b0C<\/strong>\n            <span>Gu\u00eda de recocido, endurecimiento, temple, tratamiento a temperaturas bajo cero y revenido para acero inoxidable 440C.<\/span>\n          <\/a>\n        <\/div>\n      <\/section>\n\n      <section class=\"aobo-final-cta\">\n        <div>\n          <h2>\u00bfNecesita acero inoxidable 440C para piezas resistentes al desgaste?<\/h2>\n          <p>Indique el grado, tama\u00f1o, cantidad, estado de la superficie y aplicaci\u00f3n. Aobo Steel puede suministrar barras y placas de acero inoxidable 440C recocido para mecanizado, tratamiento t\u00e9rmico, cojinetes, v\u00e1lvulas, herramientas de corte y piezas de desgaste de precisi\u00f3n.<\/p>\n        <\/div>\n        <a class=\"aobo-btn popmake-16052\" href=\"javascript:void(0);\">Enviar consulta<\/a>\n      <\/section>\n    <\/main>\n  <\/div>\n<\/section>\n\n\n\n\n<h2 id=\"h-faq\" class=\"wp-block-heading\">Preguntas frecuentes<\/h2>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1777472822389\"><strong class=\"schema-faq-question\"><strong>\u00bfCu\u00e1les son las propiedades clave del acero inoxidable 440C?<\/strong><\/strong> <p class=\"schema-faq-answer\">El acero 440C se caracteriza por su alta dureza (58\u201360 HRC), alta resistencia al desgaste, resistencia moderada a la corrosi\u00f3n y baja tenacidad. Se utiliza principalmente en aplicaciones donde predomina el desgaste, en lugar de en componentes estructurales.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1777472842441\"><strong class=\"schema-faq-question\"><strong>\u00bfEl acero inoxidable 440C es duro o quebradizo?<\/strong><\/strong> <p class=\"schema-faq-answer\">Tras el tratamiento t\u00e9rmico, el acero 440C se vuelve muy duro, pero tambi\u00e9n relativamente quebradizo. Su baja resistencia al impacto lo hace inadecuado para aplicaciones que impliquen cargas de choque, impacto o flexi\u00f3n.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1777472843195\"><strong class=\"schema-faq-question\"><strong>\u00bfEl acero inoxidable 440C tiene buena resistencia a la corrosi\u00f3n?<\/strong><\/strong> <p class=\"schema-faq-answer\">El acero 440C ofrece una resistencia a la corrosi\u00f3n fiable en entornos suaves, como agua dulce y exposici\u00f3n atmosf\u00e9rica. Sin embargo, es menos resistente que los aceros inoxidables austen\u00edticos como el 304 o el 316, especialmente en entornos marinos o ricos en cloruros.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1777472843896\"><strong class=\"schema-faq-question\"><strong>\u00bfPor qu\u00e9 se utiliza el acero 440C para los rodamientos?<\/strong><\/strong> <p class=\"schema-faq-answer\">El acero 440C se utiliza ampliamente en rodamientos debido a su combinaci\u00f3n de alta dureza, gran resistencia al desgaste y suficiente resistencia a la corrosi\u00f3n. Esto lo hace id\u00f3neo para componentes de contacto rodante que operan en entornos ligeramente corrosivos.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1777472845089\"><strong class=\"schema-faq-question\"><strong>\u00bfQu\u00e9 dureza puede alcanzar el acero 440C despu\u00e9s del tratamiento t\u00e9rmico?<\/strong><\/strong> <p class=\"schema-faq-answer\">El acero 440C puede alcanzar una dureza m\u00e1xima de aproximadamente 60 HRC tras el temple. En aplicaciones pr\u00e1cticas, se suele templar hasta alcanzar una dureza de entre 57 y 58 HRC para lograr un equilibrio entre dureza y estabilidad.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1777472871765\"><strong class=\"schema-faq-question\"><strong>\u00bfEs el acero inoxidable 440C mejor que el 420?<\/strong><\/strong> <p class=\"schema-faq-answer\">El acero 440C ofrece una dureza y resistencia al desgaste significativamente mayores que el 420, pero tiene menor tenacidad y es m\u00e1s dif\u00edcil de mecanizar. El 420 es el preferido cuando se requiere resistencia al impacto y un procesamiento m\u00e1s sencillo.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1777472881635\"><strong class=\"schema-faq-question\"><strong>\u00bfSe puede soldar el acero inoxidable 440C?<\/strong><\/strong> <p class=\"schema-faq-answer\">Generalmente, no se recomienda soldar acero 440C debido a su alto contenido de carbono y su tendencia a agrietarse. El mecanizado y el conformado deben realizarse en estado recocido antes del tratamiento t\u00e9rmico.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1777472897148\"><strong class=\"schema-faq-question\"><strong>\u00bfEs el acero 440C apto para el mecanizado?<\/strong><\/strong> <p class=\"schema-faq-answer\">El acero 440C se puede mecanizar en estado recocido, pero su maquinabilidad es relativamente baja en comparaci\u00f3n con los aceros al carbono est\u00e1ndar. Tras el endurecimiento, el mecanizado se vuelve extremadamente dif\u00edcil debido a su elevada dureza y contenido de carburos.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1777472905374\"><strong class=\"schema-faq-question\"><strong>\u00bfCu\u00e1les son las principales limitaciones del acero inoxidable 440C?<\/strong><\/strong> <p class=\"schema-faq-answer\">Las principales limitaciones incluyen baja tenacidad, mala soldabilidad, resistencia limitada a la corrosi\u00f3n en entornos hostiles y bajo rendimiento a altas temperaturas.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1777472913920\"><strong class=\"schema-faq-question\"><strong>\u00bfCu\u00e1ndo NO se debe utilizar acero inoxidable 440C?<\/strong><\/strong> <p class=\"schema-faq-answer\">Debe evitarse el uso de 440C en aplicaciones que impliquen cargas de impacto, corrosi\u00f3n severa (como en agua de mar), requisitos de soldadura, exposici\u00f3n a altas temperaturas o mecanizado complejo de alto volumen.<\/p> <\/div> <\/div>","protected":false},"excerpt":{"rendered":"<p>440C Stainless Steel Properties 440C Stainless Steel Properties 440C is a high-carbon, high-chromium martensitic stainless steel built for maximum hardness and wear resistance among corrosion-resistant steels. After proper heat treatment, it reaches up to 60 HRC and is typically used at 57 to 60 HRC, giving strong resistance to abrasion, edge wear, and surface deformation [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":15008,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"normal-width-container","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":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","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":"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":""}},"footnotes":""},"class_list":["post-14770","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.2 (Yoast SEO v28.2) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>440C Stainless Steel Properties, Composition, Hardness, Mechanical Properties &amp; 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It is primarily used in wear-dominated applications rather than structural components.\",\"inLanguage\":\"es\"},\"inLanguage\":\"es\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/440c-stainless-steel-properties\\\/#faq-question-1777472842441\",\"position\":2,\"url\":\"https:\\\/\\\/aobosteel.com\\\/440c-stainless-steel-properties\\\/#faq-question-1777472842441\",\"name\":\"Is 440C stainless steel hard or brittle?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"After heat treatment, 440C becomes very hard but also relatively brittle. Its low impact toughness makes it unsuitable for applications involving shock, impact, or bending loads.\",\"inLanguage\":\"es\"},\"inLanguage\":\"es\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/440c-stainless-steel-properties\\\/#faq-question-1777472843195\",\"position\":3,\"url\":\"https:\\\/\\\/aobosteel.com\\\/440c-stainless-steel-properties\\\/#faq-question-1777472843195\",\"name\":\"Does 440C stainless steel have good corrosion resistance?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"440C provides reliable corrosion resistance in mild environments such as fresh water and atmospheric exposure. However, it is less resistant than austenitic stainless steels such as 304 or 316, especially in chloride-rich or marine environments.\",\"inLanguage\":\"es\"},\"inLanguage\":\"es\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/440c-stainless-steel-properties\\\/#faq-question-1777472843896\",\"position\":4,\"url\":\"https:\\\/\\\/aobosteel.com\\\/440c-stainless-steel-properties\\\/#faq-question-1777472843896\",\"name\":\"Why is 440C used for bearings?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"440C is widely used for bearings because it combines high hardness, strong wear resistance, and sufficient corrosion resistance. This makes it suitable for rolling-contact components operating in mildly corrosive environments.\",\"inLanguage\":\"es\"},\"inLanguage\":\"es\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/440c-stainless-steel-properties\\\/#faq-question-1777472845089\",\"position\":5,\"url\":\"https:\\\/\\\/aobosteel.com\\\/440c-stainless-steel-properties\\\/#faq-question-1777472845089\",\"name\":\"What hardness can 440C reach after heat treatment?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"440C can reach a maximum hardness of about 60 HRC after quenching. In practical applications, it is usually tempered to around 57\u201358 HRC to balance hardness and stability.\",\"inLanguage\":\"es\"},\"inLanguage\":\"es\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/440c-stainless-steel-properties\\\/#faq-question-1777472871765\",\"position\":6,\"url\":\"https:\\\/\\\/aobosteel.com\\\/440c-stainless-steel-properties\\\/#faq-question-1777472871765\",\"name\":\"Is 440C better than 420 stainless steel?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"440C offers significantly higher hardness and wear resistance than 420, but has lower toughness and is more difficult to machine. 420 is preferred when impact resistance and easier processing are required.\",\"inLanguage\":\"es\"},\"inLanguage\":\"es\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/440c-stainless-steel-properties\\\/#faq-question-1777472881635\",\"position\":7,\"url\":\"https:\\\/\\\/aobosteel.com\\\/440c-stainless-steel-properties\\\/#faq-question-1777472881635\",\"name\":\"Can 440C stainless steel be welded?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"440C is generally not recommended for welding due to its high carbon content and tendency to crack. 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It is primarily used in wear-dominated applications rather than structural components.","inLanguage":"es"},"inLanguage":"es"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/440c-stainless-steel-properties\/#faq-question-1777472842441","position":2,"url":"https:\/\/aobosteel.com\/440c-stainless-steel-properties\/#faq-question-1777472842441","name":"\u00bfEl acero inoxidable 440C es duro o quebradizo?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"After heat treatment, 440C becomes very hard but also relatively brittle. Its low impact toughness makes it unsuitable for applications involving shock, impact, or bending loads.","inLanguage":"es"},"inLanguage":"es"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/440c-stainless-steel-properties\/#faq-question-1777472843195","position":3,"url":"https:\/\/aobosteel.com\/440c-stainless-steel-properties\/#faq-question-1777472843195","name":"\u00bfEl acero inoxidable 440C tiene buena resistencia a la corrosi\u00f3n?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"440C provides reliable corrosion resistance in mild environments such as fresh water and atmospheric exposure. However, it is less resistant than austenitic stainless steels such as 304 or 316, especially in chloride-rich or marine environments.","inLanguage":"es"},"inLanguage":"es"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/440c-stainless-steel-properties\/#faq-question-1777472843896","position":4,"url":"https:\/\/aobosteel.com\/440c-stainless-steel-properties\/#faq-question-1777472843896","name":"\u00bfPor qu\u00e9 se utiliza el acero 440C para los rodamientos?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"440C is widely used for bearings because it combines high hardness, strong wear resistance, and sufficient corrosion resistance. This makes it suitable for rolling-contact components operating in mildly corrosive environments.","inLanguage":"es"},"inLanguage":"es"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/440c-stainless-steel-properties\/#faq-question-1777472845089","position":5,"url":"https:\/\/aobosteel.com\/440c-stainless-steel-properties\/#faq-question-1777472845089","name":"\u00bfQu\u00e9 dureza puede alcanzar el acero 440C despu\u00e9s del tratamiento t\u00e9rmico?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"440C can reach a maximum hardness of about 60 HRC after quenching. In practical applications, it is usually tempered to around 57\u201358 HRC to balance hardness and stability.","inLanguage":"es"},"inLanguage":"es"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/440c-stainless-steel-properties\/#faq-question-1777472871765","position":6,"url":"https:\/\/aobosteel.com\/440c-stainless-steel-properties\/#faq-question-1777472871765","name":"\u00bfEs el acero inoxidable 440C mejor que el 420?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"440C offers significantly higher hardness and wear resistance than 420, but has lower toughness and is more difficult to machine. 420 is preferred when impact resistance and easier processing are required.","inLanguage":"es"},"inLanguage":"es"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/440c-stainless-steel-properties\/#faq-question-1777472881635","position":7,"url":"https:\/\/aobosteel.com\/440c-stainless-steel-properties\/#faq-question-1777472881635","name":"\u00bfSe puede soldar el acero inoxidable 440C?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"440C is generally not recommended for welding due to its high carbon content and tendency to crack. Machining and forming should be completed in the annealed condition before heat treatment.","inLanguage":"es"},"inLanguage":"es"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/440c-stainless-steel-properties\/#faq-question-1777472897148","position":8,"url":"https:\/\/aobosteel.com\/440c-stainless-steel-properties\/#faq-question-1777472897148","name":"\u00bfEs el acero 440C apto para el mecanizado?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"440C can be machined in the annealed condition, but it has relatively poor machinability compared to standard carbon steels. After hardening, machining becomes extremely difficult due to high hardness and carbide content.","inLanguage":"es"},"inLanguage":"es"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/440c-stainless-steel-properties\/#faq-question-1777472905374","position":9,"url":"https:\/\/aobosteel.com\/440c-stainless-steel-properties\/#faq-question-1777472905374","name":"\u00bfCu\u00e1les son las principales limitaciones del acero inoxidable 440C?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"The main limitations include low toughness, poor weldability, limited corrosion resistance in harsh environments, and poor high-temperature performance.","inLanguage":"es"},"inLanguage":"es"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/440c-stainless-steel-properties\/#faq-question-1777472913920","position":10,"url":"https:\/\/aobosteel.com\/440c-stainless-steel-properties\/#faq-question-1777472913920","name":"\u00bfCu\u00e1ndo NO se debe utilizar acero inoxidable 440C?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"440C should be avoided in applications involving impact loading, severe corrosion (such as seawater), welding requirements, high-temperature exposure, or complex high-volume machining.","inLanguage":"es"},"inLanguage":"es"}]}},"uagb_featured_image_src":{"full":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/440C-properties-AD.avif",1254,1254,false],"thumbnail":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/440C-properties-AD-150x150.avif",150,150,true],"medium":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/440C-properties-AD-300x300.avif",300,300,true],"medium_large":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/440C-properties-AD-768x768.avif",768,768,true],"large":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/440C-properties-AD-1024x1024.avif",1024,1024,true],"1536x1536":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/440C-properties-AD.avif",1254,1254,false],"2048x2048":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/440C-properties-AD.avif",1254,1254,false],"trp-custom-language-flag":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/440C-properties-AD-12x12.avif",12,12,true]},"uagb_author_info":{"display_name":"Evan","author_link":"https:\/\/aobosteel.com\/es\/blog\/author\/admin\/"},"uagb_comment_info":0,"uagb_excerpt":"440C Stainless Steel Properties 440C Stainless Steel Properties 440C is a high-carbon, high-chromium martensitic stainless steel built for maximum hardness and wear resistance among corrosion-resistant steels. 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