{"id":19287,"date":"2026-09-19T07:33:13","date_gmt":"2026-09-18T23:33:13","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=19287"},"modified":"2026-10-22T12:10:48","modified_gmt":"2026-10-22T04:10:48","slug":"hardness-test-correction-factors-round-bar","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/pt\/hardness-test-correction-factors-round-bar\/","title":{"rendered":"Fatores de corre\u00e7\u00e3o do ensaio de dureza para barras redondas"},"content":{"rendered":"

Fatores de corre\u00e7\u00e3o do ensaio de dureza para barras redondas<\/h1>\n\n\n\n

Uma leitura de dureza feita em uma barra redonda n\u00e3o \u00e9 o mesmo valor que uma leitura feita em material plano do mesmo material. Esta p\u00e1gina traz os fatores de corre\u00e7\u00e3o publicados para pe\u00e7as cil\u00edndricas nas escalas Rockwell, com os limites de di\u00e2metro que determinam quando uma corre\u00e7\u00e3o \u00e9 necess\u00e1ria.<\/p>\n\n\n\n

Por que uma superf\u00edcie curva apresenta leitura baixa<\/h2>\n\n\n\n

Quando um penetrador \u00e9 for\u00e7ado contra uma superf\u00edcie convexa, h\u00e1 menos suporte lateral para a for\u00e7a de penetra\u00e7\u00e3o, de modo que o penetrador afunda mais do que afundaria em uma superf\u00edcie plana de mesma dureza e a leitura resulta baixa. Em uma superf\u00edcie c\u00f4ncava, o suporte extra produz o efeito oposto, e a leitura resulta alta.<\/p>\n\n\n\n

Os valores de corre\u00e7\u00e3o s\u00e3o somados \u00e0 leitura observada em uma superf\u00edcie convexa e subtra\u00eddos dela em uma superf\u00edcie c\u00f4ncava. Os valores publicados s\u00e3o m\u00e9dias arredondadas para o meio n\u00famero Rockwell mais pr\u00f3ximo, obtidas de medi\u00e7\u00f5es de v\u00e1rios laborat\u00f3rios e da an\u00e1lise do mesmo problema.<\/p>\n\n\n\n

Acima de 25 mm (1 in.) de di\u00e2metro, a diferen\u00e7a \u00e9 desprez\u00edvel nas escalas Rockwell. Abaixo desse di\u00e2metro, e particularmente em material mais macio, onde a impress\u00e3o \u00e9 maior, a curvatura precisa ser corrigida antes que o valor seja comparado com uma superf\u00edcie plana ou com outro di\u00e2metro.<\/p>\n\n\n\n

As escalas Rockwell regular podem ser usadas em cilindros at\u00e9 6,35 mm (0,25 in.) de di\u00e2metro, raz\u00e3o pela qual a coluna de 3,175 mm est\u00e1 em branco para as escalas C, D e A. Os valores de corre\u00e7\u00e3o superficial v\u00e3o at\u00e9 3,175 mm (0,125 in.), e abaixo desse di\u00e2metro a pe\u00e7a pertence a um m\u00e9todo de microindenta\u00e7\u00e3o.<\/p>\n\n\n\n

Um resultado obtido em uma superf\u00edcie curva n\u00e3o deve ser reportado sem o raio de curvatura. A precis\u00e3o em pe\u00e7as cil\u00edndricas tamb\u00e9m depende do alinhamento do fuso elevador, da bigorna em V e do penetrador, e do acabamento superficial e da retid\u00e3o da barra. Para o ensaio Brinell, o raio de curvatura deve ser maior que 2,5 vezes o di\u00e2metro da esfera do penetrador.<\/p>\n\n\n\n

Fatores de corre\u00e7\u00e3o para pe\u00e7as cil\u00edndricas, Rockwell padr\u00e3o<\/h2>\n\n\n\n

Some o valor na superf\u00edcie externa de um cilindro e subtraia-o em uma superf\u00edcie interna. As colunas s\u00e3o o di\u00e2metro da pe\u00e7a.<\/p>\n\n\n\n

Penetrador de diamante, escalas Rockwell C, D e A<\/h3>\n\n\n\n
Leitura observada<\/th>3.175
0,125 in.<\/th>		6.350
0,250 in.<\/th>		9.525
0,375 in.<\/th>		12.700
0,500 in.<\/th>		15.875
0,625 in.<\/th>		19.050
0,750 in.<\/th>		22.225
0,875 in.<\/th>		25.400
1,000 in.<\/th><\/tr><\/thead>
80<\/td>\u2026<\/td>0.5<\/td>0.5<\/td>0.5<\/td>\u2026<\/td>\u2026<\/td>\u2026<\/td>\u2026<\/td><\/tr>
70<\/td>\u2026<\/td>1.0<\/td>1.0<\/td>0.5<\/td>0.5<\/td>0.5<\/td>\u2026<\/td>\u2026<\/td><\/tr>
60<\/td>\u2026<\/td>1.5<\/td>1.0<\/td>1.0<\/td>0.5<\/td>0.5<\/td>0.5<\/td>0.5<\/td><\/tr>
50<\/td>\u2026<\/td>2.5<\/td>2.0<\/td>1.5<\/td>1.0<\/td>1.0<\/td>0.5<\/td>0.5<\/td><\/tr>
40<\/td>\u2026<\/td>3.5<\/td>2.5<\/td>2.0<\/td>1.5<\/td>1.0<\/td>1.0<\/td>1.0<\/td><\/tr>
30<\/td>\u2026<\/td>5.0<\/td>3.5<\/td>2.5<\/td>2.0<\/td>1.5<\/td>1.5<\/td>1.0<\/td><\/tr>
20<\/td>\u2026<\/td>6.0<\/td>4.5<\/td>3.5<\/td>2.5<\/td>2.0<\/td>1.5<\/td>1.5<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Penetrador de esfera de 1,588 mm (1\/16 in.), escalas Rockwell B, F e G<\/h3>\n\n\n\n
Leitura observada<\/th>3.175
0,125 in.<\/th>		6.350
0,250 in.<\/th>		9.525
0,375 in.<\/th>		12.700
0,500 in.<\/th>		15.875
0,625 in.<\/th>		19.050
0,750 in.<\/th>		22.225
0,875 in.<\/th>		25.400
1,000 in.<\/th><\/tr><\/thead>
100<\/td>\u2026<\/td>3.5<\/td>2.5<\/td>1.5<\/td>1.5<\/td>1.0<\/td>1.0<\/td>0.5<\/td><\/tr>
90<\/td>\u2026<\/td>4.0<\/td>3.0<\/td>2.0<\/td>1.5<\/td>1.5<\/td>1.5<\/td>1.0<\/td><\/tr>
80<\/td>\u2026<\/td>5.0<\/td>3.5<\/td>2.5<\/td>2.0<\/td>1.5<\/td>1.5<\/td>1.5<\/td><\/tr>
70<\/td>\u2026<\/td>6.0<\/td>4.0<\/td>3.0<\/td>2.5<\/td>2.0<\/td>2.0<\/td>1.5<\/td><\/tr>
60<\/td>\u2026<\/td>7.0<\/td>5.0<\/td>3.5<\/td>3.0<\/td>2.5<\/td>2.0<\/td>2.0<\/td><\/tr>
50<\/td>\u2026<\/td>8.0<\/td>5.5<\/td>4.0<\/td>3.5<\/td>3.0<\/td>2.5<\/td>2.0<\/td><\/tr>
40<\/td>\u2026<\/td>9.0<\/td>6.0<\/td>4.5<\/td>4.0<\/td>3.0<\/td>2.5<\/td>2.5<\/td><\/tr>
30<\/td>\u2026<\/td>10.0<\/td>6.5<\/td>5.0<\/td>4.5<\/td>3.5<\/td>3.0<\/td>2.5<\/td><\/tr>
20<\/td>\u2026<\/td>11.0<\/td>7.5<\/td>5.5<\/td>4.5<\/td>4.0<\/td>3.5<\/td>3.0<\/td><\/tr>
10<\/td>\u2026<\/td>12.0<\/td>8.0<\/td>6.0<\/td>5.0<\/td>4.0<\/td>3.5<\/td>3.0<\/td><\/tr>
0<\/td>\u2026<\/td>12.5<\/td>8.5<\/td>6.5<\/td>5.5<\/td>4.5<\/td>3.5<\/td>3.0<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Fonte: ASM Handbook, Vol. 8, Fatores de corre\u00e7\u00e3o para pe\u00e7as cil\u00edndricas ensaiadas com dur\u00f4metros Rockwell padr\u00e3o.<\/em><\/p>\n\n\n\n

Fatores de corre\u00e7\u00e3o para pe\u00e7as cil\u00edndricas, Rockwell superficial<\/h2>\n\n\n\n

As escalas superficiais s\u00e3o usadas em se\u00e7\u00f5es finas e profundidades de camada endurecida rasas, onde as escalas regulares s\u00e3o muito pesadas para a pe\u00e7a.<\/p>\n\n\n\n

Penetrador de diamante, escalas Rockwell 15N, 30N e 45N<\/h3>\n\n\n\n
Leitura observada<\/th>3.175
0,125 in.<\/th>		6.350
0,250 in.<\/th>		9.525
0,375 in.<\/th>		12.700
0,500 in.<\/th>		15.875
0,625 in.<\/th>		19.050
0,750 in.<\/th>		22.225
0,875 in.<\/th>		25.400
1,000 in.<\/th><\/tr><\/thead>
90<\/td>0.5<\/td>0.5<\/td>\u2026<\/td>\u2026<\/td>\u2026<\/td>\u2026<\/td>\u2026<\/td>\u2026<\/td><\/tr>
85<\/td>0.5<\/td>0.5<\/td>0.5<\/td>\u2026<\/td>\u2026<\/td>\u2026<\/td>\u2026<\/td>\u2026<\/td><\/tr>
80<\/td>1.0<\/td>0.5<\/td>0.5<\/td>0.5<\/td>\u2026<\/td>\u2026<\/td>\u2026<\/td>\u2026<\/td><\/tr>
75<\/td>1.5<\/td>1.0<\/td>0.5<\/td>0.5<\/td>0.5<\/td>0.5<\/td>\u2026<\/td>\u2026<\/td><\/tr>
70<\/td>2.0<\/td>1.0<\/td>1.0<\/td>0.5<\/td>0.5<\/td>0.5<\/td>\u2026<\/td>0.5<\/td><\/tr>
65<\/td>2.5<\/td>1.5<\/td>1.0<\/td>0.5<\/td>0.5<\/td>0.5<\/td>\u2026<\/td>0.5<\/td><\/tr>
60<\/td>3.0<\/td>1.5<\/td>1.0<\/td>1.0<\/td>0.5<\/td>0.5<\/td>\u2026<\/td>0.5<\/td><\/tr>
55<\/td>3.5<\/td>2.0<\/td>1.5<\/td>1.0<\/td>1.0<\/td>0.5<\/td>\u2026<\/td>0.5<\/td><\/tr>
50<\/td>3.5<\/td>2.0<\/td>1.5<\/td>1.0<\/td>1.0<\/td>1.0<\/td>\u2026<\/td>0.5<\/td><\/tr>
45<\/td>4.0<\/td>2.5<\/td>2.0<\/td>1.0<\/td>1.0<\/td>1.0<\/td>\u2026<\/td>1.0<\/td><\/tr>
40<\/td>4.5<\/td>3.0<\/td>2.0<\/td>1.5<\/td>1.0<\/td>1.0<\/td>\u2026<\/td>1.0<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Penetrador de esfera de 1,588 mm (1\/16 in.), escalas Rockwell 15T, 30T e 45T<\/h3>\n\n\n\n
Leitura observada<\/th>3.175
0,125 in.<\/th>		6.350
0,250 in.<\/th>		9.525
0,375 in.<\/th>		12.700
0,500 in.<\/th>		15.875
0,625 in.<\/th>		19.050
0,750 in.<\/th>		22.225
0,875 in.<\/th>		25.400
1,000 in.<\/th><\/tr><\/thead>
90<\/td>1.5<\/td>1.0<\/td>1.0<\/td>0.5<\/td>0.5<\/td>0.5<\/td>\u2026<\/td>0.5<\/td><\/tr>
80<\/td>3.0<\/td>2.0<\/td>1.5<\/td>1.5<\/td>1.0<\/td>1.0<\/td>\u2026<\/td>0.5<\/td><\/tr>
70<\/td>5.0<\/td>3.5<\/td>2.5<\/td>2.0<\/td>1.5<\/td>1.0<\/td>\u2026<\/td>1.0<\/td><\/tr>
60<\/td>6.5<\/td>4.5<\/td>3.0<\/td>2.5<\/td>2.0<\/td>1.5<\/td>\u2026<\/td>1.5<\/td><\/tr>
50<\/td>8.5<\/td>5.5<\/td>4.0<\/td>3.0<\/td>2.5<\/td>2.0<\/td>\u2026<\/td>1.5<\/td><\/tr>
40<\/td>10.0<\/td>6.5<\/td>4.5<\/td>3.5<\/td>3.0<\/td>2.5<\/td>\u2026<\/td>2.0<\/td><\/tr>
30<\/td>11.5<\/td>7.5<\/td>5.0<\/td>4.0<\/td>3.5<\/td>2.5<\/td>\u2026<\/td>2.0<\/td><\/tr>
20<\/td>13.0<\/td>9.0<\/td>6.0<\/td>4.5<\/td>3.5<\/td>3.0<\/td>\u2026<\/td>2.0<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Source: ASM Handbook, Vol. 8, correction factors for cylindrical workpieces tested with superficial Rockwell hardness testers. The 22.225 mm column is blank for the 15T, 30T and 45T scales in the source table.<\/em><\/p>\n\n\n\n

O que a corre\u00e7\u00e3o representa na pr\u00e1tica<\/h2>\n\n\n\n

Em uma barra de 6,35 mm, uma leitura de 60 HRC carrega uma corre\u00e7\u00e3o de 1,5 ponto e uma leitura de 30 HRC carrega 5,0 pontos. Na dureza em que o a\u00e7o ferramenta \u00e9 usado, a corre\u00e7\u00e3o \u00e9 pequena, mas \u00e9 maior que a repetibilidade do ensaio, de modo que decide se uma barra se enquadra em uma faixa de aceita\u00e7\u00e3o estreita.<\/p>\n\n\n\n

Um certificado que apresenta 58,5 HRC em uma barra redonda sem indicar o di\u00e2metro n\u00e3o pode ser comparado com o resultado de um corpo de prova plano. Informe o di\u00e2metro, a escala e a carga, e diga se a corre\u00e7\u00e3o foi aplicada.<\/p>\n\n\n\n

A mesma tabela cobre tubo, onde o furo \u00e9 uma superf\u00edcie c\u00f4ncava, e arame, onde a leitura cai abaixo da faixa das escalas regular. Abaixo de 6,35 mm de di\u00e2metro, as escalas regular est\u00e3o fora, e as escalas superficiais N carregam a corre\u00e7\u00e3o at\u00e9 3,175 mm.<\/p>\n\n\n\n

Antes de citar um valor de dureza<\/h2>\n\n\n\n

Uma leitura de dureza pertence a uma escala, uma carga e uma geometria de pe\u00e7a. Comparar um valor obtido em superf\u00edcie curva com um corpo de prova plano, ou um valor superficial com um valor da escala C, produz uma diverg\u00eancia que nada tem a ver com o material.<\/p>\n\n\n\n

Os fatores nesta p\u00e1gina s\u00e3o dados de refer\u00eancia publicados e s\u00e3o aproximados por constru\u00e7\u00e3o. Confirme os crit\u00e9rios de aceita\u00e7\u00e3o em rela\u00e7\u00e3o \u00e0 norma que rege o seu pr\u00f3prio produto, e indique a escala, a carga, a localiza\u00e7\u00e3o e o di\u00e2metro da pe\u00e7a no certificado.<\/p>\n\n\n\n

P\u00e1ginas de refer\u00eancia relacionadas neste site: Espessura m\u00ednima para ensaio de dureza<\/a>, M\u00e9todos de teste de dureza<\/a>, Calculadora de convers\u00e3o de dureza do a\u00e7o ferramenta<\/a>, Verifica\u00e7\u00e3o de qualidade do a\u00e7o ferramenta<\/a>, Fornecimento de a\u00e7o para ferramentas<\/a>.<\/p>\n\n\n\n

Fonte: ASM Handbook, Volume 8, Mechanical Testing and Evaluation (ASM International), artigo Selection and Industrial Applications of Hardness Tests, de Andrew Fee, Consultor, e artigo Macroindentation Hardness Testing, de Edward L. Tobolski, Wilson Instruments Division, Instron Corporation, e Andrew Fee, Consultor. Os valores s\u00e3o reproduzidos apenas para refer\u00eancia. A Aobo Steel fornece a\u00e7o ferramenta no estado recozido.<\/em><\/p>","protected":false},"excerpt":{"rendered":"

Hardness Test Correction Factors for Round Bar A hardness reading taken on a round bar is not the same value as a reading taken on flat stock of the same material. This page carries the published correction factors for cylindrical workpieces on the Rockwell scales, with the diameter limits that decide when a correction is […]<\/p>\n","protected":false},"author":1,"featured_media":0,"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":"","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":"default","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-19287","page","type-page","status-publish","hentry"],"yoast_head":"\nRockwell Hardness Correction for Round Bar | Aobo Steel<\/title>\n<meta name=\"description\" content=\"Correction factors that convert Rockwell hardness readings taken on round bar and tube into flat surface values, on the HRC, HRA, B and superficial N and T scales.\" \/>\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\/pt\/hardness-test-correction-factors-round-bar\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Hardness Test Correction Factors for Round Bar\" \/>\n<meta property=\"og:description\" content=\"Correction factors that convert Rockwell hardness readings taken on round bar and tube into flat surface values, on the HRC, HRA, B and superficial N and T scales.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/aobosteel.com\/pt\/hardness-test-correction-factors-round-bar\/\" \/>\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=\"2026-10-22T04:10:48+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. tempo de leitura\" \/>\n\t<meta name=\"twitter:data1\" content=\"4 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"TechArticle\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/hardness-test-correction-factors-round-bar\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/aobosteel.com\\\/hardness-test-correction-factors-round-bar\\\/\"},\"author\":{\"name\":\"Evan\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/#\\\/schema\\\/person\\\/96118415c30ca6bb52eaf1127b052ef7\"},\"headline\":\"Hardness Test Correction Factors for Round Bar\",\"datePublished\":\"2026-09-18T23:33:13+00:00\",\"dateModified\":\"2026-10-22T04:10:48+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/aobosteel.com\\\/hardness-test-correction-factors-round-bar\\\/\"},\"wordCount\":874,\"publisher\":{\"@id\":\"https:\\\/\\\/aobosteel.com\\\/#organization\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/hardness-test-correction-factors-round-bar\\\/\",\"url\":\"https:\\\/\\\/aobosteel.com\\\/hardness-test-correction-factors-round-bar\\\/\",\"name\":\"Rockwell Hardness Correction for Round Bar | Aobo Steel\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/aobosteel.com\\\/#website\"},\"datePublished\":\"2026-09-18T23:33:13+00:00\",\"dateModified\":\"2026-10-22T04:10:48+00:00\",\"description\":\"Correction factors that convert Rockwell hardness readings taken on round bar and tube into flat surface values, on the HRC, HRA, B and superficial N and T scales.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/aobosteel.com\\\/hardness-test-correction-factors-round-bar\\\/#breadcrumb\"},\"inLanguage\":\"pt-BR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/aobosteel.com\\\/hardness-test-correction-factors-round-bar\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/hardness-test-correction-factors-round-bar\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\\\/\\\/aobosteel.com\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Hardness Test Correction Factors for Round Bar\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/#website\",\"url\":\"https:\\\/\\\/aobosteel.com\\\/\",\"name\":\"AoboSteel\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\\\/\\\/aobosteel.com\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/aobosteel.com\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"pt-BR\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/#organization\",\"name\":\"AoboSteel\",\"url\":\"https:\\\/\\\/aobosteel.com\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"pt-BR\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/aobosteel.com\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/cropped-aobo-steel-1.avif\",\"contentUrl\":\"https:\\\/\\\/aobosteel.com\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/cropped-aobo-steel-1.avif\",\"width\":1052,\"height\":592,\"caption\":\"AoboSteel\"},\"image\":{\"@id\":\"https:\\\/\\\/aobosteel.com\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/profile.php?id=61565368220197\",\"https:\\\/\\\/www.linkedin.com\\\/in\\\/aobosteel-evan\\\/\"]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/#\\\/schema\\\/person\\\/96118415c30ca6bb52eaf1127b052ef7\",\"name\":\"Evan\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"pt-BR\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/8e402f2e6f36093f0bf1855dbf79269cde23cd659c44eefdd7ecf7ff9c05786f?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/8e402f2e6f36093f0bf1855dbf79269cde23cd659c44eefdd7ecf7ff9c05786f?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/8e402f2e6f36093f0bf1855dbf79269cde23cd659c44eefdd7ecf7ff9c05786f?s=96&d=mm&r=g\",\"caption\":\"Evan\"},\"sameAs\":[\"http:\\\/\\\/www.aobosteel.com\",\"https:\\\/\\\/www.facebook.com\\\/profile.php?id=61565368220197\",\"https:\\\/\\\/www.instagram.com\\\/aobosteel\\\/\",\"https:\\\/\\\/www.linkedin.com\\\/in\\\/aobosteel-evan\\\/\",\"https:\\\/\\\/x.com\\\/AobosteelEvan\",\"https:\\\/\\\/www.youtube.com\\\/@aobosteel\"],\"url\":\"https:\\\/\\\/aobosteel.com\\\/pt\\\/blog\\\/author\\\/admin\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Rockwell Hardness Correction for Round Bar | Aobo Steel","description":"Correction factors that convert Rockwell hardness readings taken on round bar and tube into flat surface values, on the HRC, HRA, B and superficial N and T scales.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/aobosteel.com\/pt\/hardness-test-correction-factors-round-bar\/","og_locale":"pt_BR","og_type":"article","og_title":"Hardness Test Correction Factors for Round Bar","og_description":"Correction factors that convert Rockwell hardness readings taken on round bar and tube into flat surface values, on the HRC, HRA, B and superficial N and T scales.","og_url":"https:\/\/aobosteel.com\/pt\/hardness-test-correction-factors-round-bar\/","og_site_name":"AoboSteel","article_publisher":"https:\/\/www.facebook.com\/profile.php?id=61565368220197","article_modified_time":"2026-10-22T04:10:48+00:00","twitter_card":"summary_large_image","twitter_misc":{"Est. tempo de leitura":"4 minutos"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"TechArticle","@id":"https:\/\/aobosteel.com\/hardness-test-correction-factors-round-bar\/#article","isPartOf":{"@id":"https:\/\/aobosteel.com\/hardness-test-correction-factors-round-bar\/"},"author":{"name":"Evan","@id":"https:\/\/aobosteel.com\/#\/schema\/person\/96118415c30ca6bb52eaf1127b052ef7"},"headline":"Hardness Test Correction Factors for Round Bar","datePublished":"2026-09-18T23:33:13+00:00","dateModified":"2026-10-22T04:10:48+00:00","mainEntityOfPage":{"@id":"https:\/\/aobosteel.com\/hardness-test-correction-factors-round-bar\/"},"wordCount":874,"publisher":{"@id":"https:\/\/aobosteel.com\/#organization"},"inLanguage":"pt-BR"},{"@type":"WebPage","@id":"https:\/\/aobosteel.com\/hardness-test-correction-factors-round-bar\/","url":"https:\/\/aobosteel.com\/hardness-test-correction-factors-round-bar\/","name":"Rockwell Hardness Correction for Round Bar | Aobo Steel","isPartOf":{"@id":"https:\/\/aobosteel.com\/#website"},"datePublished":"2026-09-18T23:33:13+00:00","dateModified":"2026-10-22T04:10:48+00:00","description":"Correction factors that convert Rockwell hardness readings taken on round bar and tube into flat surface values, on the HRC, HRA, B and superficial N and T scales.","breadcrumb":{"@id":"https:\/\/aobosteel.com\/hardness-test-correction-factors-round-bar\/#breadcrumb"},"inLanguage":"pt-BR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/aobosteel.com\/hardness-test-correction-factors-round-bar\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/aobosteel.com\/hardness-test-correction-factors-round-bar\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u9996\u9875","item":"https:\/\/aobosteel.com\/"},{"@type":"ListItem","position":2,"name":"Hardness Test Correction Factors for Round Bar"}]},{"@type":"WebSite","@id":"https:\/\/aobosteel.com\/#website","url":"https:\/\/aobosteel.com\/","name":"AoboSteel","description":"","publisher":{"@id":"https:\/\/aobosteel.com\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/aobosteel.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"pt-BR"},{"@type":"Organization","@id":"https:\/\/aobosteel.com\/#organization","name":"AoboSteel","url":"https:\/\/aobosteel.com\/","logo":{"@type":"ImageObject","inLanguage":"pt-BR","@id":"https:\/\/aobosteel.com\/#\/schema\/logo\/image\/","url":"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/01\/cropped-aobo-steel-1.avif","contentUrl":"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/01\/cropped-aobo-steel-1.avif","width":1052,"height":592,"caption":"AoboSteel"},"image":{"@id":"https:\/\/aobosteel.com\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/profile.php?id=61565368220197","https:\/\/www.linkedin.com\/in\/aobosteel-evan\/"]},{"@type":"Person","@id":"https:\/\/aobosteel.com\/#\/schema\/person\/96118415c30ca6bb52eaf1127b052ef7","name":"Evan","image":{"@type":"ImageObject","inLanguage":"pt-BR","@id":"https:\/\/secure.gravatar.com\/avatar\/8e402f2e6f36093f0bf1855dbf79269cde23cd659c44eefdd7ecf7ff9c05786f?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/8e402f2e6f36093f0bf1855dbf79269cde23cd659c44eefdd7ecf7ff9c05786f?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/8e402f2e6f36093f0bf1855dbf79269cde23cd659c44eefdd7ecf7ff9c05786f?s=96&d=mm&r=g","caption":"Evan"},"sameAs":["http:\/\/www.aobosteel.com","https:\/\/www.facebook.com\/profile.php?id=61565368220197","https:\/\/www.instagram.com\/aobosteel\/","https:\/\/www.linkedin.com\/in\/aobosteel-evan\/","https:\/\/x.com\/AobosteelEvan","https:\/\/www.youtube.com\/@aobosteel"],"url":"https:\/\/aobosteel.com\/pt\/blog\/author\/admin\/"}]}},"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"trp-custom-language-flag":false},"uagb_author_info":{"display_name":"Evan","author_link":"https:\/\/aobosteel.com\/pt\/blog\/author\/admin\/"},"uagb_comment_info":0,"uagb_excerpt":"Hardness Test Correction Factors for Round Bar A hardness reading taken on a round bar is not the same value as a reading taken on flat stock of the same material. This page carries the published correction factors for cylindrical workpieces on the Rockwell scales, with the diameter limits that decide when a correction is…","rttpg_featured_image_url":null,"rttpg_author":{"display_name":"Evan","author_link":"https:\/\/aobosteel.com\/pt\/blog\/author\/admin\/"},"rttpg_comment":0,"rttpg_category":null,"rttpg_excerpt":"Hardness Test Correction Factors for Round Bar A hardness reading taken on a round bar is not the same value as a reading taken on flat stock of the same material. This page carries the published correction factors for cylindrical workpieces on the Rockwell scales, with the diameter limits that decide when a correction is…","_links":{"self":[{"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/pages\/19287","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/comments?post=19287"}],"version-history":[{"count":5,"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/pages\/19287\/revisions"}],"predecessor-version":[{"id":24083,"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/pages\/19287\/revisions\/24083"}],"wp:attachment":[{"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/media?parent=19287"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}