{"id":117382,"date":"2022-09-16T15:28:11","date_gmt":"2022-09-16T14:28:11","guid":{"rendered":"https:\/\/material-properties.org\/cromo-e-cobre-comparacao-propriedades\/"},"modified":"2022-10-22T16:11:53","modified_gmt":"2022-10-22T15:11:53","slug":"cromo-e-cobre-comparacao-propriedades","status":"publish","type":"post","link":"https:\/\/material-properties.org\/pt-br\/cromo-e-cobre-comparacao-propriedades\/","title":{"rendered":"Cromo e Cobre &#8211; Compara\u00e7\u00e3o &#8211; Propriedades"},"content":{"rendered":"<p><em><span>Este artigo cont\u00e9m uma compara\u00e7\u00e3o das principais propriedades t\u00e9rmicas e at\u00f4micas do cromo e do cobre, dois elementos qu\u00edmicos compar\u00e1veis \u200b\u200bda tabela peri\u00f3dica.\u00a0Ele tamb\u00e9m cont\u00e9m descri\u00e7\u00f5es b\u00e1sicas e aplica\u00e7\u00f5es de ambos os elementos.\u00a0Cromo vs. Cobre.<\/span><\/em><\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-106964\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/01\/chromium-and-copper-comparison.png\" alt=\"cromo e cobre - compara\u00e7\u00e3o\" width=\"1000\" height=\"900\" srcset=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/01\/chromium-and-copper-comparison.png 1000w, https:\/\/material-properties.org\/wp-content\/uploads\/2021\/01\/chromium-and-copper-comparison-300x270.png 300w, https:\/\/material-properties.org\/wp-content\/uploads\/2021\/01\/chromium-and-copper-comparison-768x691.png 768w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/p>\n<div  class=\"lgc-column lgc-grid-parent lgc-grid-50 lgc-tablet-grid-50 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<div class=\"su-spoiler su-spoiler-style-modern-light su-spoiler-icon-plus su-spoiler-closed\" data-scroll-offset=\"0\" data-anchor-in-url=\"no\"><div class=\"su-spoiler-title\" tabindex=\"0\" role=\"button\"><span class=\"su-spoiler-icon\"><\/span>Compare Ccobre com outro elemento<\/div><div class=\"su-spoiler-content su-u-clearfix su-u-trim\">\n<div class=\"su-divider su-divider-style-dotted\" style=\"margin:25px 0;border-width:3px;border-color:#999999\"><\/div>\n<p><a href=\"https:\/\/material-properties.org\/Chromium-and-Copper-comparison-properties\/\"><img decoding=\"async\" loading=\"lazy\" class=\"alignleft\" title=\"Compare com cobre\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/10\/Copper-properties-price-application-production-150x150.png\" alt=\"Cobre - Propriedades - Pre\u00e7o - Aplica\u00e7\u00f5es - Produ\u00e7\u00e3o\" width=\"150\" height=\"150\" \/><\/a><\/p>\n<p><a href=\"https:\/\/material-properties.org\/Chromium-and-Iron-comparison-properties\/\"><img decoding=\"async\" loading=\"lazy\" class=\"alignleft\" title=\"Compare com Ferro\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/10\/Iron-properties-price-application-production-150x150.png\" alt=\"Ferro - Propriedades - Pre\u00e7o - Aplica\u00e7\u00f5es - Produ\u00e7\u00e3o\" width=\"150\" height=\"150\" \/><\/a><\/p>\n<p><a href=\"https:\/\/material-properties.org\/Chromium-and-Zinc-comparison-properties\/\"><img decoding=\"async\" loading=\"lazy\" class=\"alignleft\" title=\"Compare com zinco\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/10\/Zinc-properties-price-application-production-150x150.png\" alt=\"Zinco - Propriedades - Pre\u00e7o - Aplica\u00e7\u00f5es - Produ\u00e7\u00e3o\" width=\"150\" height=\"150\" \/><\/a><\/p>\n<p><a href=\"https:\/\/material-properties.org\/Chromium-and-Manganese-comparison-properties\/\"><img decoding=\"async\" loading=\"lazy\" class=\"alignleft\" title=\"Compare com mangan\u00eas\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/10\/Manganese-properties-price-application-production-150x150.png\" alt=\"Mangan\u00eas - Propriedades - Pre\u00e7o - Aplica\u00e7\u00f5es - Produ\u00e7\u00e3o\" width=\"150\" height=\"150\" \/><\/a><\/p>\n<p><a href=\"https:\/\/material-properties.org\/Chromium-and-Molybdenum-comparison-properties\/\"><img decoding=\"async\" loading=\"lazy\" class=\"alignleft\" title=\"Compare com Molibd\u00eanio\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/10\/Molybdenum-properties-price-application-production-150x150.png\" alt=\"Molibd\u00eanio - Propriedades - Pre\u00e7o - Aplica\u00e7\u00f5es - Produ\u00e7\u00e3o\" width=\"150\" height=\"150\" \/><\/a><\/p>\n<p><a href=\"https:\/\/material-properties.org\/Chromium-and-Tungsten-comparison-properties\/\"><img decoding=\"async\" loading=\"lazy\" class=\"alignleft\" title=\"Compare com Tungst\u00eanio\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/10\/Tungsten-properties-price-application-production-150x150.png\" alt=\"Tungst\u00eanio - Propriedades - Pre\u00e7o - Aplica\u00e7\u00f5es - Produ\u00e7\u00e3o\" width=\"150\" height=\"150\" \/><\/a><\/p>\n<\/div><\/div>\n<\/div><\/div>\n<div  class=\"lgc-column lgc-grid-parent lgc-grid-50 lgc-tablet-grid-50 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<div class=\"su-spoiler su-spoiler-style-modern-light su-spoiler-icon-plus su-spoiler-closed\" data-scroll-offset=\"0\" data-anchor-in-url=\"no\"><div class=\"su-spoiler-title\" tabindex=\"0\" role=\"button\"><span class=\"su-spoiler-icon\"><\/span>Compare copper with another element<\/div><div class=\"su-spoiler-content su-u-clearfix su-u-trim\">\n<div class=\"su-divider su-divider-style-dotted\" style=\"margin:25px 0;border-width:3px;border-color:#999999\"><\/div>\n<p><a href=\"https:\/\/material-properties.org\/Beryllium-and-Copper-comparison-properties\/\"><img decoding=\"async\" loading=\"lazy\" class=\"alignleft\" title=\"Compare com Ber\u00edlio\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/10\/Beryllium-properties-price-application-production-150x150.png\" alt=\"Ber\u00edlio - Propriedades - Pre\u00e7o - Aplica\u00e7\u00f5es - Produ\u00e7\u00e3o\" width=\"150\" height=\"150\" \/><\/a><\/p>\n<p><a href=\"https:\/\/material-properties.org\/Magnesium-and-Copper-comparison-properties\/\"><img decoding=\"async\" loading=\"lazy\" class=\"alignleft\" title=\"Compare com Magn\u00e9sio\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/10\/Magnesium-properties-price-application-production-150x150.png\" alt=\"Magn\u00e9sio - Propriedades - Pre\u00e7o - Aplica\u00e7\u00f5es - Produ\u00e7\u00e3o\" width=\"150\" height=\"150\" \/><\/a><\/p>\n<p><a href=\"https:\/\/material-properties.org\/Aluminium-and-Copper-comparison-properties\/\"><img decoding=\"async\" loading=\"lazy\" class=\"alignleft\" title=\"Compare com alum\u00ednio\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/10\/Aluminium-properties-price-application-production-150x150.png\" alt=\"Alum\u00ednio - Propriedades - Pre\u00e7o - Aplica\u00e7\u00f5es - Produ\u00e7\u00e3o\" width=\"150\" height=\"150\" \/><\/a><\/p>\n<p><a href=\"https:\/\/material-properties.org\/Silicon-and-Copper-comparison-properties\/\"><img decoding=\"async\" loading=\"lazy\" class=\"alignleft\" title=\"Compare com Silicone\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/10\/Silicon-properties-price-application-production-150x150.png\" alt=\"Sil\u00edcio - Propriedades - Pre\u00e7o - Aplica\u00e7\u00f5es - Produ\u00e7\u00e3o\" width=\"150\" height=\"150\" \/><\/a><\/p>\n<p><a href=\"https:\/\/material-properties.org\/Chlorine-and-Copper-comparison-properties\/\"><img decoding=\"async\" loading=\"lazy\" class=\"alignleft\" title=\"Compare com cloro\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/10\/Chlorine-properties-price-application-production-150x150.png\" alt=\"Cloro - Propriedades - Pre\u00e7o - Aplica\u00e7\u00f5es - Produ\u00e7\u00e3o\" width=\"150\" height=\"150\" \/><\/a><\/p>\n<p><a href=\"https:\/\/material-properties.org\/Titanium-and-Copper-comparison-properties\/\"><img decoding=\"async\" loading=\"lazy\" class=\"alignleft\" title=\"Compare com tit\u00e2nio\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/10\/Titanium-properties-price-application-production-150x150.png\" alt=\"Tit\u00e2nio - Propriedades - Pre\u00e7o - Aplica\u00e7\u00f5es - Produ\u00e7\u00e3o\" width=\"150\" height=\"150\" \/><\/a><\/p>\n<p><a href=\"https:\/\/material-properties.org\/Chromium-and-Copper-comparison-properties\/\"><img decoding=\"async\" loading=\"lazy\" class=\"alignleft\" title=\"Compare com cromo\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/10\/Chromium-properties-price-application-production-150x150.png\" alt=\"Cromo - Propriedades - Pre\u00e7o - Aplica\u00e7\u00f5es - Produ\u00e7\u00e3o\" width=\"150\" height=\"150\" \/><\/a><\/p>\n<p><a href=\"https:\/\/material-properties.org\/Manganese-and-Copper-comparison-properties\/\"><img decoding=\"async\" loading=\"lazy\" class=\"alignleft\" title=\"Compare com mangan\u00eas\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/10\/Manganese-properties-price-application-production-150x150.png\" alt=\"Mangan\u00eas - Propriedades - Pre\u00e7o - Aplica\u00e7\u00f5es - Produ\u00e7\u00e3o\" width=\"150\" height=\"150\" \/><\/a><\/p>\n<p><a href=\"https:\/\/material-properties.org\/Iron-and-Copper-comparison-properties\/\"><img decoding=\"async\" loading=\"lazy\" class=\"alignleft\" title=\"Compare com Ferro\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/10\/Iron-properties-price-application-production-150x150.png\" alt=\"Ferro - Propriedades - Pre\u00e7o - Aplica\u00e7\u00f5es - Produ\u00e7\u00e3o\" width=\"150\" height=\"150\" \/><\/a><\/p>\n<p><a href=\"https:\/\/material-properties.org\/Cobalt-and-Copper-comparison-properties\/\"><img decoding=\"async\" loading=\"lazy\" class=\"alignleft\" title=\"Compare com Cobalto\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/10\/Cobalt-properties-price-application-production-150x150.png\" alt=\"Cobalto - Propriedades - Pre\u00e7o - Aplica\u00e7\u00f5es - Produ\u00e7\u00e3o\" width=\"150\" height=\"150\" \/><\/a><\/p>\n<p><a href=\"https:\/\/material-properties.org\/Copper-and-Silver-comparison-properties\/\"><img decoding=\"async\" loading=\"lazy\" class=\"alignleft\" title=\"Compare com Prata\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/10\/Silver-properties-price-application-production-150x150.png\" alt=\"Prata - Propriedades - Pre\u00e7o - Aplica\u00e7\u00f5es - Produ\u00e7\u00e3o\" width=\"150\" height=\"150\" \/><\/a><\/p>\n<p><a href=\"https:\/\/material-properties.org\/Copper-and-Gold-comparison-properties\/\"><img decoding=\"async\" loading=\"lazy\" class=\"alignleft\" title=\"Compare com ouro\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/10\/Gold-properties-price-application-production-150x150.png\" alt=\"Ouro - Propriedades - Pre\u00e7o - Aplica\u00e7\u00f5es - Produ\u00e7\u00e3o\" width=\"150\" height=\"150\" \/><\/a><\/p>\n<p><a href=\"https:\/\/material-properties.org\/Copper-and-Tin-comparison-properties\/\"><img decoding=\"async\" loading=\"lazy\" class=\"alignleft\" title=\"Comparar com estanho\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/10\/Tin-properties-price-application-production-150x150.png\" alt=\"Estanho - Propriedades - Pre\u00e7o - Aplica\u00e7\u00f5es - Produ\u00e7\u00e3o\" width=\"150\" height=\"150\" \/><\/a><\/p>\n<\/div><\/div>\n<\/div><\/div>\n<div class=\"su-spacer\" style=\"height:20px\"><\/div>\n<div class=\"su-heading su-heading-style-modern-1-dark su-heading-align-left\" id=\"\" style=\"font-size:13px;margin-bottom:20px\"><div class=\"su-heading-inner\">\n<h2><span>Cromo e Cobre &#8211; Sobre Elementos<\/span><\/h2>\n<\/div><\/div>\n<div  class=\"lgc-column lgc-grid-parent lgc-grid-50 lgc-tablet-grid-50 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<div class=\"sue-icon-text sue-panel-clickable\" data-url=\"https:\/\/material-properties.org\/chromium-properties-applications-price-production\/\" data-target=\"self\" style=\"min-height:58px;padding-left:72px;color:#000000\"><div class=\"sue-icon-text-icon\" style=\"color:#5dbcd2;font-size:48px;width:48px;height:48px\"><i class=\"sui sui-info-circle\" style=\"font-size:48px;color:#5dbcd2\"><\/i><\/div><div class=\"sue-icon-text-content sue-content-wrap\" style=\"color:#000000\">\n<h3><span>Cromo<\/span><\/h3>\n<p>O cromo \u00e9 um metal cinza-a\u00e7o, lustroso, duro e quebradi\u00e7o, que recebe um alto polimento, resiste a manchas e tem um alto ponto de fus\u00e3o.\u00a0Um grande desenvolvimento foi a descoberta de que o a\u00e7o poderia ser altamente resistente \u00e0 corros\u00e3o e descolora\u00e7\u00e3o pela adi\u00e7\u00e3o de cromo met\u00e1lico para formar a\u00e7o inoxid\u00e1vel.<\/p>\n<\/div><div style=\"clear:both;height:0\"><\/div><\/div>\n<\/div><\/div>\n<div  class=\"lgc-column lgc-grid-parent lgc-grid-50 lgc-tablet-grid-50 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<div class=\"sue-icon-text sue-panel-clickable\" data-url=\"https:\/\/material-properties.org\/copper-properties-applications-price-production\/\" data-target=\"self\" style=\"min-height:58px;padding-left:72px;color:#000000\"><div class=\"sue-icon-text-icon\" style=\"color:#5dbcd2;font-size:48px;width:48px;height:48px\"><i class=\"sui sui-info-circle\" style=\"font-size:48px;color:#5dbcd2\"><\/i><\/div><div class=\"sue-icon-text-content sue-content-wrap\" style=\"color:#000000\">\n<h3><span>Cobre<\/span><\/h3>\n<p><span>O cobre \u00e9 um metal macio, male\u00e1vel e d\u00factil com alta condutividade t\u00e9rmica e el\u00e9trica.\u00a0Uma superf\u00edcie rec\u00e9m-exposta de cobre puro tem uma cor laranja-avermelhada.\u00a0O cobre \u00e9 usado como condutor de calor e eletricidade, como material de constru\u00e7\u00e3o e como constituinte de v\u00e1rias ligas met\u00e1licas, como prata esterlina usada em joias, cupron\u00edquel usado para fazer ferragens e moedas mar\u00edtimas e constantan usado em medidores de tens\u00e3o e termopares para medi\u00e7\u00e3o de temperatura.<\/span><\/p>\n<\/div><div style=\"clear:both;height:0\"><\/div><\/div>\n<\/div><\/div>\n<div class=\"su-divider su-divider-style-dotted\" style=\"margin:25px 0;border-width:3px;border-color:#999999\"><\/div>\n<p><span><div  class=\"lgc-column lgc-grid-parent lgc-grid-50 lgc-tablet-grid-50 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-medium wp-image-92359\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/09\/Chromium-periodic-table-300x269.png\" alt=\"Cromo na Tabela Peri\u00f3dica\" width=\"300\" height=\"269\" srcset=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/09\/Chromium-periodic-table-300x269.png 300w, https:\/\/material-properties.org\/wp-content\/uploads\/2020\/09\/Chromium-periodic-table.png 708w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<p><span><\/span><\/p><\/div><\/div><\/span><\/p>\n<p><span><div  class=\"lgc-column lgc-grid-parent lgc-grid-50 lgc-tablet-grid-50 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-medium wp-image-92309\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/09\/Copper-periodic-table-289x300.png\" alt=\"Cobre na Tabela Peri\u00f3dica\" width=\"289\" height=\"300\" srcset=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/09\/Copper-periodic-table-289x300.png 289w, https:\/\/material-properties.org\/wp-content\/uploads\/2020\/09\/Copper-periodic-table.png 682w\" sizes=\"(max-width: 289px) 100vw, 289px\" \/><\/p>\n<p style=\"text-align: left;\"><span><\/span><\/p><\/div><\/div><\/span><\/p>\n<p style=\"text-align: center;\"><span>Fonte: www.luciteria.com<\/span><\/p>\n<p><span><div class=\"su-spacer\" style=\"height:20px\"><\/div><\/span><\/p>\n<p><span><div class=\"su-heading su-heading-style-modern-1-dark su-heading-align-left\" id=\"\" style=\"font-size:13px;margin-bottom:20px\"><div class=\"su-heading-inner\"><\/span><\/p>\n<h2><span>Cromo e Cobre &#8211; Aplica\u00e7\u00f5es<\/span><\/h2>\n<\/div><\/div>\n<div  class=\"lgc-column lgc-grid-parent lgc-grid-50 lgc-tablet-grid-50 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<div class=\"sue-shadow-wrap sue-content-wrap sue-shadow-inline-no\"><div class=\"sue-shadow sue-shadow-style-vertical\">\n<div class=\"sue-panel\" data-url=\"\" data-target=\"self\" style=\"background-color:#ffffff;color:#333333;border-radius:0px;-moz-border-radius:0px;-webkit-border-radius:0px;box-shadow:none;-moz-box-shadow:none;-webkit-box-shadow:none;border:1px solid #cccccc\"><div class=\"sue-panel-content sue-content-wrap\" style=\"padding:15px;text-align:left\">\n<h3><a href=\"https:\/\/material-properties.org\/chromium-properties-applications-price-production\/\"><span>Cromo<\/span><\/a><\/h3>\n<p><span>O cromo \u00e9 um dos metais industriais mais importantes e indispens\u00e1veis \u200b\u200bdevido \u00e0 sua dureza e resist\u00eancia \u00e0 corros\u00e3o.\u00a0Mas \u00e9 usado para mais do que a produ\u00e7\u00e3o de a\u00e7o inoxid\u00e1vel e ligas n\u00e3o ferrosas;\u00a0tamb\u00e9m \u00e9 usado para criar pigmentos e produtos qu\u00edmicos usados \u200b\u200bpara processar couro.\u00a0Na metalurgia, o cromo aumenta a dureza, for\u00e7a e resist\u00eancia \u00e0 corros\u00e3o.\u00a0O efeito de fortalecimento da forma\u00e7\u00e3o de carbonetos met\u00e1licos est\u00e1veis \u200b\u200bnos contornos de gr\u00e3o e o forte aumento na resist\u00eancia \u00e0 corros\u00e3o tornaram o cromo um importante material de liga para o a\u00e7o.\u00a0De um modo geral, a concentra\u00e7\u00e3o especificada para a maioria das s\u00e9ries \u00e9 de aproximadamente 4%.\u00a0Este n\u00edvel parece resultar no melhor equil\u00edbrio entre dureza e tenacidade.\u00a0O cromo desempenha um papel importante no mecanismo de endurecimento e \u00e9 considerado insubstitu\u00edvel.\u00a0Em temperaturas mais altas,\u00a0o cromo contribui para o aumento da resist\u00eancia.\u00a0\u00c9 comumente usado para aplica\u00e7\u00f5es desta natureza em conjunto com o molibd\u00eanio.\u00a0A resist\u00eancia dos a\u00e7os inoxid\u00e1veis \u200b\u200b\u00e9 baseada na passiva\u00e7\u00e3o.\u00a0Para que a passiva\u00e7\u00e3o ocorra e permane\u00e7a est\u00e1vel, a liga Fe-Cr deve ter um teor m\u00ednimo de cromo de cerca de 11% em peso, acima do qual pode ocorrer passividade e abaixo do qual \u00e9 imposs\u00edvel.<\/span><\/p>\n<\/div><\/div>\n<\/div><\/div>\n<\/div><\/div>\n<div  class=\"lgc-column lgc-grid-parent lgc-grid-50 lgc-tablet-grid-50 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<div class=\"sue-shadow-wrap sue-content-wrap sue-shadow-inline-no\"><div class=\"sue-shadow sue-shadow-style-vertical\">\n<div class=\"sue-panel\" data-url=\"\" data-target=\"self\" style=\"background-color:#ffffff;color:#333333;border-radius:0px;-moz-border-radius:0px;-webkit-border-radius:0px;box-shadow:none;-moz-box-shadow:none;-webkit-box-shadow:none;border:1px solid #cccccc\"><div class=\"sue-panel-content sue-content-wrap\" style=\"padding:15px;text-align:left\">\n<h3><a href=\"https:\/\/material-properties.org\/copper-properties-applications-price-production\/\"><span>Cobre<\/span><\/a><\/h3>\n<p><span>Historicamente, a liga de cobre com outro metal, por exemplo, estanho para fazer bronze, foi praticada pela primeira vez cerca de 4000 anos ap\u00f3s a descoberta da fundi\u00e7\u00e3o de cobre e cerca de 2000 anos ap\u00f3s o uso geral do \u201cbronze natural\u201d. Uma civiliza\u00e7\u00e3o antiga \u00e9 definida como estando na Idade do Bronze produzindo bronze fundindo seu pr\u00f3prio cobre e ligando com estanho, ars\u00eanico ou outros metais.\u00a0As principais aplica\u00e7\u00f5es do cobre s\u00e3o fios el\u00e9tricos (60%), telhados e encanamentos (20%) e maquin\u00e1rio industrial (15%).\u00a0O cobre \u00e9 usado principalmente como metal puro, mas quando \u00e9 necess\u00e1ria maior dureza, ele \u00e9 colocado em ligas como lat\u00e3o e bronze (5% do uso total).\u00a0Cobre e ligas \u00e0 base de cobre, incluindo lat\u00e3o (Cu-Zn) e bronze (Cu-Sn) s\u00e3o amplamente utilizados em diferentes aplica\u00e7\u00f5es industriais e sociais.\u00a0Alguns dos usos comuns para ligas de lat\u00e3o incluem bijuterias, fechaduras, dobradi\u00e7as, engrenagens, rolamentos, inv\u00f3lucros de muni\u00e7\u00e3o, radiadores automotivos, instrumentos musicais, embalagens eletr\u00f4nicas e moedas.\u00a0Bronze, ou ligas e misturas semelhantes a bronze, foram usadas para moedas por um per\u00edodo mais longo.\u00a0ainda \u00e9 amplamente utilizado hoje para molas, rolamentos, buchas, rolamentos piloto de transmiss\u00e3o de autom\u00f3veis e acess\u00f3rios semelhantes, e \u00e9 particularmente comum nos rolamentos de pequenos motores el\u00e9tricos.\u00a0O lat\u00e3o e o bronze s\u00e3o materiais de engenharia comuns na arquitetura moderna e usados \u200b\u200bprincipalmente para coberturas e revestimentos de fachadas devido \u00e0 sua apar\u00eancia visual.\u00a0ainda \u00e9 amplamente utilizado hoje para molas, rolamentos, buchas, rolamentos piloto de transmiss\u00e3o de autom\u00f3veis e acess\u00f3rios semelhantes, e \u00e9 particularmente comum nos rolamentos de pequenos motores el\u00e9tricos.\u00a0O lat\u00e3o e o bronze s\u00e3o materiais de engenharia comuns na arquitetura moderna e usados \u200b\u200bprincipalmente para coberturas e revestimentos de fachadas devido \u00e0 sua apar\u00eancia visual.\u00a0ainda \u00e9 amplamente utilizado hoje para molas, rolamentos, buchas, rolamentos piloto de transmiss\u00e3o de autom\u00f3veis e acess\u00f3rios semelhantes, e \u00e9 particularmente comum nos rolamentos de pequenos motores el\u00e9tricos.\u00a0O lat\u00e3o e o bronze s\u00e3o materiais de engenharia comuns na arquitetura moderna e usados \u200b\u200bprincipalmente para coberturas e revestimentos de fachadas devido \u00e0 sua apar\u00eancia visual.<\/span><\/p>\n<\/div><\/div>\n<\/div><\/div>\n<\/div><\/div>\n<div class=\"su-heading su-heading-style-modern-1-dark su-heading-align-left\" id=\"\" style=\"font-size:13px;margin-bottom:20px\"><div class=\"su-heading-inner\">\n<h2><span>Cromo e Cobre &#8211; Compara\u00e7\u00e3o na Tabela<\/span><\/h2>\n<p><span><\/div><\/div><\/span><\/p>\n<p><span><div  class=\"lgc-column lgc-grid-parent lgc-grid-100 lgc-tablet-grid-100 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<table class=\"a\">\n<tbody>\n<tr class=\"b\">\n<td style=\"text-align: center;\"><span>Elemento<\/span><\/td>\n<td style=\"text-align: center;\"><b><span>Cromo<\/span><\/b><\/td>\n<td style=\"text-align: center;\"><b><span>Cobre<\/span><\/b><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\"><span>Densidade<\/span><\/td>\n<td style=\"text-align: center;\"><strong><span>7,14 g\/cm<sup>3<\/sup><\/span><\/strong><\/td>\n<td style=\"text-align: center;\"><strong><span>8,92 g\/cm<sup>3<\/sup><\/span><\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\"><span>Resist\u00eancia \u00e0 tra\u00e7\u00e3o<\/span><\/td>\n<td style=\"text-align: center;\"><strong><span>550 MPa<\/span><\/strong><\/td>\n<td style=\"text-align: center;\"><strong><span>210 MPa<\/span><\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\"><span>For\u00e7a de rendimento<\/span><\/td>\n<td style=\"text-align: center;\"><strong><span>131 MPa<\/span><\/strong><\/td>\n<td style=\"text-align: center;\"><strong><span>33 MPa<\/span><\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\"><span>M\u00f3dulo de elasticidade de Young<\/span><\/td>\n<td style=\"text-align: center;\"><strong><span>279 GPa<\/span><\/strong><\/td>\n<td style=\"text-align: center;\"><strong><span>120 GPa<\/span><\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\"><span>Escala de Mohs<\/span><\/td>\n<td style=\"text-align: center;\"><strong><span>8,5<\/span><\/strong><\/td>\n<td style=\"text-align: center;\"><strong><span>3<\/span><\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\"><span>Dureza Brinell<\/span><\/td>\n<td style=\"text-align: center;\"><strong><span>1120 MPa<\/span><\/strong><\/td>\n<td style=\"text-align: center;\"><strong><span>250 MPa<\/span><\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\"><span>Dureza Vickers<\/span><\/td>\n<td style=\"text-align: center;\"><strong><span>1060 MPa<\/span><\/strong><\/td>\n<td style=\"text-align: center;\"><strong><span>350 MPa<\/span><\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\"><span>Ponto de fus\u00e3o<\/span><\/td>\n<td style=\"text-align: center;\"><strong><span>1907 \u00b0C<\/span><\/strong><\/td>\n<td style=\"text-align: center;\"><strong><span>1084,62 \u00b0C<\/span><\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\"><span>Ponto de ebuli\u00e7\u00e3o<\/span><\/td>\n<td style=\"text-align: center;\"><strong><span>2671 \u00b0C<\/span><\/strong><\/td>\n<td style=\"text-align: center;\"><strong><span>2562 \u00b0C<\/span><\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\"><span>Condutividade t\u00e9rmica<\/span><\/td>\n<td style=\"text-align: center;\"><strong><span>93,7 W\/mK<\/span><\/strong><\/td>\n<td style=\"text-align: center;\"><strong><span>401 W\/mK<\/span><\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\"><span>Coeficiente de Expans\u00e3o T\u00e9rmica<\/span><\/td>\n<td style=\"text-align: center;\"><strong><span>4,9 \u00b5m\/mK<\/span><\/strong><\/td>\n<td style=\"text-align: center;\"><strong><span>16,5 \u00b5m\/mK<\/span><\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\"><span>Calor espec\u00edfico<\/span><\/td>\n<td style=\"text-align: center;\"><strong><span style=\"text-align: start;\"><span>0,45 J\/gK<\/span><\/span><\/strong><\/td>\n<td style=\"text-align: center;\"><strong><span>0,38 J\/gK<\/span><\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\"><span>Calor de fus\u00e3o<\/span><\/td>\n<td style=\"text-align: center;\"><strong><span>16,9 kJ\/mol<\/span><\/strong><\/td>\n<td style=\"text-align: center;\"><strong><span>13,05 kJ\/mol<\/span><\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\"><span>Calor da vaporiza\u00e7\u00e3o<\/span><\/td>\n<td style=\"text-align: center;\"><strong><span style=\"text-align: start;\"><span>344,3 kJ\/mol<\/span><\/span><\/strong><\/td>\n<td style=\"text-align: center;\"><strong><span>300,3 kJ\/mol<\/span><\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span><\/span><\/p><\/div><\/div><\/span><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Este artigo cont\u00e9m uma compara\u00e7\u00e3o das principais propriedades t\u00e9rmicas e at\u00f4micas do cromo e do cobre, dois elementos qu\u00edmicos compar\u00e1veis \u200b\u200bda tabela peri\u00f3dica.\u00a0Ele tamb\u00e9m cont\u00e9m descri\u00e7\u00f5es b\u00e1sicas e aplica\u00e7\u00f5es de ambos os elementos.\u00a0Cromo vs. Cobre. Fonte: www.luciteria.com &nbsp;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Cromo e Cobre - Compara\u00e7\u00e3o - Propriedades - Material Properties<\/title>\n<meta name=\"description\" content=\"Este artigo cont\u00e9m uma compara\u00e7\u00e3o das principais propriedades t\u00e9rmicas e at\u00f4micas do cromo e do cobre, dois elementos qu\u00edmicos compar\u00e1veis da tabela peri\u00f3dica. Ele tamb\u00e9m cont\u00e9m descri\u00e7\u00f5es b\u00e1sicas e aplica\u00e7\u00f5es de ambos os elementos. 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