{"id":2955,"date":"2021-01-21T09:09:12","date_gmt":"2021-01-21T08:09:12","guid":{"rendered":"https:\/\/www.redhillballs.com\/?page_id=2955"},"modified":"2025-09-29T10:35:00","modified_gmt":"2025-09-29T08:35:00","slug":"esferas-de-aco-ferramenta-m50","status":"publish","type":"page","link":"https:\/\/www.redhillballs.com\/pt-pt\/produtos\/esferas-de-metais-nao-ferrosos-e-suas-ligas\/esferas-de-aco-ferramenta-m50\/","title":{"rendered":"Esferas de a\u00e7o-ferramenta M50 (a\u00e7o r\u00e1pido HSS)"},"content":{"rendered":"<h2>\ud83d\udee0\ufe0f <a href=\"https:\/\/en.wikipedia.org\/wiki\/Tool_steel\">Esferas de a\u00e7o-ferramenta M50 \u2013 dureza a quente &amp; confiabilidade de rolamentos<\/a><\/h2>\n<p>As Esferas de a\u00e7o-ferramenta M50 s\u00e3o projetadas para servi\u00e7o de rolamentos em velocidades extremas e altas temperaturas. A liga com Cr\u2013Mo\u2013V desenvolve uma matriz martens\u00edtica revenida fina com carbonetos est\u00e1veis, oferecendo excelente dureza a quente, resist\u00eancia ao desgaste e vida em fadiga\u2014ideal onde o AISI 52100 atinge seus limites (spindles aeroespaciais, acess\u00f3rios de turbinas, m\u00e1quinas-ferramenta de alta rota\u00e7\u00e3o).<\/p>\n<h3>\ud83d\udd27 Especifica\u00e7\u00f5es t\u00e9cnicas principais<\/h3>\n<ul>\n<li><strong>Composi\u00e7\u00e3o<\/strong>: C 0,80\u20130,85%, Cr 4,0\u20134,3%, Mo 4,0\u20134,5%, V 1,0\u20131,2% (Si, Mn baixos; Fe balan\u00e7o)<\/li>\n<li><strong>Estrutura<\/strong>: martensita revenida com carbonetos de liga finamente dispersos<\/li>\n<li><strong>Dureza<\/strong>: Rockwell C 60\u201366 (ap\u00f3s tratamento t\u00e9rmico)<\/li>\n<li><strong>Resist\u00eancia \u00e0 tra\u00e7\u00e3o<\/strong>: at\u00e9 \u2248 2.200\u20132.400 MPa (dependente da condi\u00e7\u00e3o)<\/li>\n<li><strong>Densidade<\/strong>: ~7,80\u20137,85 g\/cm\u00b3<\/li>\n<li><strong>Capacidade t\u00e9rmica<\/strong>: mant\u00e9m dureza\/resist\u00eancia em temperaturas elevadas<\/li>\n<li><strong>Corros\u00e3o<\/strong>: limitada; usar lubrifica\u00e7\u00e3o\/revestimentos em meios corrosivos<\/li>\n<li><strong>Magn\u00e9tico<\/strong>: totalmente magn\u00e9ticas<\/li>\n<\/ul>\n<h3>\u2705 Vantagens das Esferas de a\u00e7o-ferramenta M50<\/h3>\n<ul>\n<li><strong>Dureza a quente &amp; resist\u00eancia ao desgaste<\/strong> para servi\u00e7o em alta velocidade<\/li>\n<li><strong>Excelente vida em fadiga<\/strong> sob cargas c\u00edclicas<\/li>\n<li><strong>Estabilidade dimensional<\/strong> ap\u00f3s tratamento t\u00e9rmico<\/li>\n<li><strong>Baixo atrito<\/strong> com bom acabamento e lubrifica\u00e7\u00e3o<\/li>\n<\/ul>\n<h3>\ud83d\udd04 Aplica\u00e7\u00f5es<\/h3>\n<ul>\n<li><strong>Rolamentos aeroespaciais<\/strong>: acess\u00f3rios de motores de turbina, spindles de alta velocidade<\/li>\n<li><strong>M\u00e1quinas-ferramenta de precis\u00e3o<\/strong>: spindles de ret\u00edfica\/fresagem<\/li>\n<li><strong>Mecanismos de alta temperatura<\/strong> e instrumenta\u00e7\u00e3o<\/li>\n<\/ul>\n<h3>\ud83d\udce6 Graus &amp; tamanhos dispon\u00edveis<\/h3>\n<ul>\n<li><a href=\"https:\/\/www.redhillballs.com\/company\/precision-grades\/\"><strong>Graus<\/strong>: ISO 3290, DIN 5401, AFBMA (toler\u00e2ncias equivalentes)<\/a><\/li>\n<li><strong>Faixa de di\u00e2metros<\/strong>: tamanhos imperiais e m\u00e9tricos padr\u00e3o; fora de padr\u00e3o\/sob medida sob consulta<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\ud83d\udee0\ufe0f Esferas de a\u00e7o-ferramenta M50 \u2013 dureza a quente &amp; confiabilidade de rolamentos As Esferas de a\u00e7o-ferramenta M50 s\u00e3o projetadas para servi\u00e7o de rolamentos em velocidades extremas e altas temperaturas. A liga com Cr\u2013Mo\u2013V desenvolve uma matriz martens\u00edtica revenida fina com carbonetos est\u00e1veis, oferecendo excelente dureza a quente, resist\u00eancia ao desgaste e vida em fadiga\u2014ideal [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":8776,"parent":2937,"menu_order":9,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-2955","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.8 (Yoast SEO v28.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Esferas de a\u00e7o-ferramenta M50 \u2013 a\u00e7o r\u00e1pido (HSS) - resist\u00eancia<\/title>\n<meta name=\"description\" content=\"Esferas de a\u00e7o-ferramenta M50 oferecem alta dureza, resist\u00eancia ao desgaste e estabilidade dimensional em aplica\u00e7\u00f5es industriais cr\u00edticas.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.redhillballs.com\/pt-pt\/produtos\/esferas-de-metais-nao-ferrosos-e-suas-ligas\/esferas-de-aco-ferramenta-m50\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Esferas de a\u00e7o-ferramenta M50 (a\u00e7o r\u00e1pido HSS)\" \/>\n<meta property=\"og:description\" content=\"Esferas de a\u00e7o-ferramenta M50 oferecem alta dureza, resist\u00eancia ao desgaste e estabilidade dimensional em aplica\u00e7\u00f5es industriais cr\u00edticas.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.redhillballs.com\/pt-pt\/produtos\/esferas-de-metais-nao-ferrosos-e-suas-ligas\/esferas-de-aco-ferramenta-m50\/\" \/>\n<meta property=\"og:site_name\" content=\"Redhill Precision Specialty Balls\" \/>\n<meta property=\"article:modified_time\" content=\"2025-09-29T08:35:00+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.redhillballs.com\/wp-content\/uploads\/2025\/09\/high-speed-tool-steel-m50-balls-1.png\" \/>\n\t<meta property=\"og:image:width\" content=\"750\" \/>\n\t<meta property=\"og:image:height\" content=\"500\" \/>\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=\"Tempo estimado de leitura\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.redhillballs.com\\\/pt-pt\\\/produtos\\\/esferas-de-metais-nao-ferrosos-e-suas-ligas\\\/esferas-de-aco-ferramenta-m50\\\/\",\"url\":\"https:\\\/\\\/www.redhillballs.com\\\/pt-pt\\\/produtos\\\/esferas-de-metais-nao-ferrosos-e-suas-ligas\\\/esferas-de-aco-ferramenta-m50\\\/\",\"name\":\"Esferas de a\u00e7o-ferramenta M50 \u2013 a\u00e7o r\u00e1pido (HSS) - 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