{"id":14770,"date":"2026-04-22T10:10:05","date_gmt":"2026-04-22T02:10:05","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=14770"},"modified":"2026-06-13T10:33:59","modified_gmt":"2026-06-13T02:33:59","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>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 under contact loading.<\/p>\n      <p>Its high carbon content also means low ductility and limited impact toughness. This makes 440C a material for wear-dominated parts under stable loading, not for shock-loaded or structural service. Everything on this page follows from that single trade-off, so it helps to read the properties as a balance rather than as a list of strengths.<\/p>\n    <\/header>\n\n    <main class=\"aobo-article\">\n      <section class=\"aobo-supply-block\" aria-label=\"440C stainless steel inquiry and product details\">\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>Need 440C in annealed bar or plate?<\/h2>\n          <p>Aobo Steel stocks 440C stainless steel to industrial specifications, ready for machining and heat treatment. Send your sizes for a quote, or check our standard supply range first.<\/p>\n          <div class=\"aobo-supply-actions\">\n            <a class=\"aobo-btn aobo-btn-primary hs-cta-trigger-button hs-cta-trigger-button-230288465624\" href=\"javascript:void(0);\">Enviar consulta<\/a>\n            <a class=\"aobo-btn aobo-btn-secondary\" href=\"https:\/\/aobosteel.com\/es\/440c-stainless-steel\/\">View 440C Supply Details<\/a>\n          <\/div>\n        <\/div>\n      <\/section>\n\n      <h2>Composici\u00f3n qu\u00edmica del acero inoxidable 440C<\/h2>\n      <p>The composition of 440C (UNS S44004) is set to balance hardenability, carbide formation, and usable corrosion resistance.<\/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 to 1.20<\/td><\/tr>\n            <tr><td>Cromo (Cr)<\/td><td>16.00 to 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>The high carbon and chromium levels produce a martensitic matrix carrying a large volume of chromium-rich carbides. That structure is the source of the hardness, wear resistance, and compressive strength, and it is also the reason toughness is low. Reading the rest of these properties through the carbide structure is the fastest way to understand 440C.<\/p>\n\n      <h2>440A vs 440B vs 440C: How Carbon Changes the Grade<\/h2>\n      <p>The 440 family shares a chromium base and is separated mainly by carbon content. Carbon controls how hard the grade can become and how much toughness it sacrifices.<\/p>\n      <div class=\"aobo-table-wrap\">\n        <table class=\"aobo-table\">\n          <thead>\n            <tr><th>Grado<\/th><th>Carbon (%)<\/th><th>Dureza m\u00e1xima<\/th><th>Resistencia al desgaste<\/th><th>Relative Toughness<\/th><\/tr>\n          <\/thead>\n          <tbody>\n            <tr><td>440A<\/td><td>0.60 to 0.75<\/td><td>56 HRC<\/td><td>Medio<\/td><td>M\u00e1s alto<\/td><\/tr>\n            <tr><td>440B<\/td><td>0.75 to 0.95<\/td><td>58 HRC<\/td><td>Medium to high<\/td><td>Medio<\/td><\/tr>\n            <tr><td>440 \u00b0C<\/td><td>0.95 to 1.20<\/td><td>60 HRC<\/td><td>Alta<\/td><td>M\u00e1s bajo<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n      <p>More carbon forms chromium-rich carbides, which raise hardness and wear resistance but reduce ductility and impact strength. 440A is the choice when corrosion resistance and toughness matter more than edge life. 440C is the choice when hardness and wear resistance are the priority, and the part can be designed around limited toughness. 440B sits between the two.<\/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 (Bars and Shapes)<\/td><\/tr>\n            <tr><td>Metalurgia de polvos<\/td><td>MIM 440C<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n      <p>EN grade 1.4125 (X105CrMo17) is the closest European equivalent to AISI 440C, with a carbon range of roughly 0.95 to 1.20% and a chromium range of 16 to 18%.<\/p>\n\n      <h2>Propiedades mec\u00e1nicas del acero inoxidable 440C<\/h2>\n      <p>The mechanical behavior of 440C changes sharply between the annealed and hardened conditions. In practice, it is supplied annealed for machining, then heat-treated to reach its final performance.<\/p>\n      <div class=\"aobo-table-wrap\">\n        <table class=\"aobo-table\">\n          <thead>\n            <tr><th>Propiedad<\/th><th>Estado recocido<\/th><th>Hardened and Tempered Condition<\/th><\/tr>\n          <\/thead>\n          <tbody>\n            <tr><td>Dureza<\/td><td>About 230 HB (270 HB max)<\/td><td>57 to 60 HRC<\/td><\/tr>\n            <tr><td>Resistencia a la tracci\u00f3n<\/td><td>About 758 MPa<\/td><td>About 1970 MPa<\/td><\/tr>\n            <tr><td>l\u00edmite el\u00e1stico<\/td><td>About 430 to 450 MPa<\/td><td>About 1896 to 1900 MPa<\/td><\/tr>\n            <tr><td>Alargamiento<\/td><td>13 to 14%<\/td><td>About 2%<\/td><\/tr>\n            <tr><td>Reducci\u00f3n de \u00e1rea<\/td><td>About 25%<\/td><td>About 10%<\/td><\/tr>\n            <tr><td>Resistencia (entalla en V Charpy)<\/td><td>Not typically reported<\/td><td>3 to 5 ft&middot;lbf<\/td><\/tr>\n            <tr><td>Maquinabilidad<\/td><td>About 40% (vs AISI 1212)<\/td><td>Muy pobre<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n      <p>The modulus of elasticity is about 200 GPa, similar to most steels and not a selection factor. After heat treatment, the steel gains very high strength and hardness, while ductility and impact resistance fall away. The 2% elongation and low Charpy values are the numbers to keep in mind: 440C carries load well but does not redistribute it, so failure under overload or impact is sudden rather than gradual.<\/p>\n\n      <h2>Descripci\u00f3n general del tratamiento t\u00e9rmico del acero inoxidable 440C<\/h2>\n      <p>The performance of 440C depends heavily on heat treatment. Its hardness, wear resistance, and dimensional stability are achieved through controlled hardening and tempering.<\/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 to 900&deg;C<\/td><td>Estructura blanda para el mecanizado<\/td><\/tr>\n            <tr><td>Precalentamiento<\/td><td>About 790&deg;C (multi-step for large parts)<\/td><td>Reduzca el estr\u00e9s t\u00e9rmico y la distorsi\u00f3n.<\/td><\/tr>\n            <tr><td>Austenitizaci\u00f3n<\/td><td>1010 to 1065&deg;C (up to 1095&deg;C)<\/td><td>Disuelve los carburos y permite el endurecimiento.<\/td><\/tr>\n            <tr><td>Enfriamiento<\/td><td>Aire o aceite<\/td><td>Form martensite and reach hardness<\/td><\/tr>\n            <tr><td>Tratamiento bajo cero<\/td><td>About -75&deg;C or lower<\/td><td>Reducir la austenita retenida<\/td><\/tr>\n            <tr><td>Templado<\/td><td>About 150 to 370&deg;C (typical 315&deg;C)<\/td><td>Ajusta la dureza y alivia la tensi\u00f3n.<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n      <p>Tempering temperature is the main control variable for the final result. For a full breakdown of as-quenched versus tempered values and why reported numbers vary, see the <a href=\"https:\/\/aobosteel.com\/es\/440c-stainless-steel-hardened-hardness\/\">440C hardened hardness page<\/a>.<\/p>\n\n      <h2>How 440C Properties Translate to Performance<\/h2>\n      <p>The headline properties only matter in context. In real service, 440C behavior is decided by the trade-off among hardness, wear resistance, corrosion resistance, and toughness. None of these can be read in isolation, because the same carbide structure that raises one usually lowers another.<\/p>\n\n      <h3>Resistencia al desgaste<\/h3>\n      <p>440C delivers high wear resistance through a hard martensitic matrix combined with a high volume of chromium-rich carbides. At 57-60 HRC, it withstands both adhesive and abrasive wear. The hard matrix limits surface deformation, adhesion, scuffing, and galling, while the carbides resist cutting and plowing during sliding or rolling contact. This is why 440C keeps a stable surface and edge longer than most stainless steels.<\/p>\n      <p>The same carbides set the limit. When they are coarse or unevenly distributed, they create local stress points that can start microcracks under cyclic or rolling contact. In that situation, the failure mode shifts from steady wear to surface fatigue. Sub-zero treatment improves dimensional stability by reducing retained austenite, but it does not change this mechanism. 440C is reliable under stable loading but becomes less predictable when contact fatigue is the driver.<\/p>\n\n      <h3>Resistencia a la corrosi\u00f3n<\/h3>\n      <p>440C offers moderate corrosion resistance and is suitable for mild service, such as atmospheric exposure, lubricated systems, and light industrial conditions. The limit again comes from the carbides. Part of the chromium is locked into carbides and cannot support the passive oxide layer, so the protective film is weaker than in austenitic grades.<\/p>\n      <p>Heat treatment shifts this further. High austenitizing temperatures put more alloy into solution and improve corrosion resistance, while tempering can reduce it by altering the local composition. Tuning for mechanical performance can therefore come at the expense of corrosion stability. 440C should not be used in chloride-rich environments, aggressive chemical media, or high-temperature corrosion.<\/p>\n\n      <h3>Toughness and Mechanical Behavior<\/h3>\n      <p>In the hardened condition, 440C is strong but very low in ductility, with an elongation of about 2%. Under load, it cannot redistribute stress, so once a local point exceeds its limit, the part fails with little warning. The typical failure modes are edge chipping, crack initiation at stress concentrators, and sudden brittle fracture under impact or bending. These are driven by low ductility and by carbides acting as crack starters.<\/p>\n      <p>The practical conclusion is consistent across all three properties. 440C performs well when loading is stable and well distributed, but becomes unreliable when impact, shock, or stress concentration governs the outcome.<\/p>\n\n      <h2>440C vs Other Stainless and Tool Steels<\/h2>\n      <p>Choosing 440C is easier when you see how it balances hardness, wear resistance, corrosion resistance, and toughness against the steels it usually competes with.<\/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 to 54 HRC<\/td><td>56 to 58 HRC<\/td><td>60 to 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>Medium to high<\/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>440C balances wear resistance against corrosion resistance. Against 420 or 440A, it offers higher hardness and longer wear life. Against D2, it trades some wear resistance for corrosion performance. Against 316, it gives far higher strength and hardness but much lower corrosion resistance.<\/p>\n\n      <h2>Cu\u00e1ndo usar acero inoxidable 440C<\/h2>\n      <p>440C is best suited for applications requiring high hardness and wear resistance, moderate corrosion resistance, and stable loading.<\/p>\n      <p>It is common in precision cutting tools such as knives, surgical instruments, and fine blades, where edge retention is critical. It performs well in rolling-contact parts such as bearing balls and races, especially where corrosion resistance exceeds that of standard bearing steels. In fluid systems, it is used for valve seats, needle valves, and pump parts running in fresh water or mild industrial media. It also serves as a plastic mold insert for abrasive or mildly corrosive polymers, where surface hardness and dimensional stability matter. For a full breakdown by component type, see the 440C applications page.<\/p>\n\n      <h2>When  NOT to Use 440C Stainless Steel<\/h2>\n      <p>440C is the wrong choice when toughness, strong corrosion resistance, or easy manufacturing are the main requirements.<\/p>\n      <p>It performs poorly under impact or bending due to its low toughness, making it unsuitable for structural or dynamically loaded parts. Its corrosion resistance is limited in chloride-rich or marine environments, where austenitic grades such as 316 are more reliable. The high carbon content and air-hardening behavior make welding unreliable. It loses hardness at elevated temperatures and is not suited to high-temperature service. Machining is difficult even when annealed, and tool wear is high, so free-machining grades are often more practical for complex or high-volume parts.<\/p>\n\n      <h2>440C Applications Based on Properties<\/h2>\n      <p>The application range follows directly from the mix of high hardness, wear resistance, and moderate corrosion resistance. 440C is mainly used in parts subject to friction, rolling contact, or repeated surface loading, including corrosion-resistant bearings, valve components, precision instruments, cutting tools, and industrial blades. Where both wear resistance and basic corrosion protection are needed, it appears in medical instruments, food-processing equipment, and selected aerospace or petroleum components. Powder metallurgy routes, such as metal injection molding, are used to produce small, complex parts where machining is inefficient, including precision automotive components, locking mechanisms, and miniature wear-resistant assemblies.<\/p>\n      <p>Because of its low toughness and limited thermal stability, 440C is generally avoided in impact-loaded, structural, and high-temperature applications.<\/p>\n\n      <section class=\"aobo-related-pages\" aria-label=\"Related 440C stainless steel pages\">\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>440C Applications<\/strong>\n            <span>Common uses for 440C stainless steel based on hardness, wear resistance, corrosion resistance, and toughness limits.<\/span>\n          <\/a>\n          <a class=\"aobo-related-card\" href=\"https:\/\/aobosteel.com\/es\/440c-stainless-steel-heat-treatment\/\">\n            <strong>440C Heat Treatment Guide<\/strong>\n            <span>Annealing, hardening, quenching, subzero treatment, and tempering guidance for 440C stainless steel.<\/span>\n          <\/a>\n        <\/div>\n      <\/section>\n\n      <section class=\"aobo-final-cta\">\n        <div>\n          <h2>Need 440C Stainless Steel for Wear-Resistant Parts?<\/h2>\n          <p>Send your grade, size, quantity, surface condition, and application. Aobo Steel can support annealed 440C stainless steel bar and plate supply for machining, heat treatment, bearings, valves, cutting tools, and precision wear parts.<\/p>\n        <\/div>\n        <a class=\"aobo-btn hs-cta-trigger-button hs-cta-trigger-button-230288465624\" 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":{"content-type":"","_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 v27.8 (Yoast SEO v27.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>440C Stainless Steel Properties, Composition, Hardness, Mechanical Properties &amp; Uses<\/title>\n<meta name=\"description\" content=\"440C stainless steel properties explained: chemical composition, 57 to 60 HRC hardness, mechanical data, heat treatment, and how it compares to 420, 440A, D2, and 316.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/aobosteel.com\/es\/440c-stainless-steel-properties\/\" \/>\n<meta property=\"og:locale\" content=\"es_MX\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"440C Stainless Steel Properties, Composition, Hardness, Mechanical Properties &amp; Uses\" \/>\n<meta property=\"og:description\" content=\"440C stainless steel properties explained: chemical composition, 57 to 60 HRC hardness, mechanical data, heat treatment, and how it compares to 420, 440A, D2, and 316.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/aobosteel.com\/es\/440c-stainless-steel-properties\/\" \/>\n<meta property=\"og:site_name\" content=\"AoboSteel\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/profile.php?id=61565368220197\" \/>\n<meta property=\"article:modified_time\" content=\"2026-06-13T02:33:59+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/440C-properties-AD.avif\" \/>\n\t<meta property=\"og:image:width\" content=\"1254\" \/>\n\t<meta property=\"og:image:height\" content=\"1254\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Tiempo de lectura\" \/>\n\t<meta name=\"twitter:data1\" content=\"10 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"TechArticle\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/440c-stainless-steel-properties\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/aobosteel.com\\\/440c-stainless-steel-properties\\\/\"},\"author\":{\"name\":\"Evan\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/#\\\/schema\\\/person\\\/96118415c30ca6bb52eaf1127b052ef7\"},\"headline\":\"440C Stainless Steel Properties, Composition, Hardness, Mechanical Properties &#038; 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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. 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;","rttpg_featured_image_url":{"full":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/440C-properties-AD.avif",1254,1254,false],"landscape":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/440C-properties-AD.avif",1254,1254,false],"portraits":["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],"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]},"rttpg_author":{"display_name":"Evan","author_link":"https:\/\/aobosteel.com\/es\/blog\/author\/admin\/"},"rttpg_comment":0,"rttpg_category":null,"rttpg_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. 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;","_links":{"self":[{"href":"https:\/\/aobosteel.com\/es\/wp-json\/wp\/v2\/pages\/14770","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aobosteel.com\/es\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/aobosteel.com\/es\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/aobosteel.com\/es\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aobosteel.com\/es\/wp-json\/wp\/v2\/comments?post=14770"}],"version-history":[{"count":0,"href":"https:\/\/aobosteel.com\/es\/wp-json\/wp\/v2\/pages\/14770\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/aobosteel.com\/es\/wp-json\/wp\/v2\/media\/15008"}],"wp:attachment":[{"href":"https:\/\/aobosteel.com\/es\/wp-json\/wp\/v2\/media?parent=14770"}],"curies":[{"name":"gracias","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}