{"id":30965,"date":"2026-07-02T03:24:23","date_gmt":"2026-07-02T03:24:23","guid":{"rendered":"https:\/\/hardnesstests.com\/?p=30965"},"modified":"2026-07-02T03:24:24","modified_gmt":"2026-07-02T03:24:24","slug":"superficial-rockwell-hardness-tester-features-applications-and-buying-guide","status":"publish","type":"post","link":"https:\/\/hardnesstests.com\/de_de_formal\/superficial-rockwell-hardness-tester-features-applications-and-buying-guide\/","title":{"rendered":"Rockwell-H\u00e4rtepr\u00fcfger\u00e4t f\u00fcr Oberfl\u00e4chenh\u00e4rte: Merkmale, Anwendungsbereiche und Kaufberatung"},"content":{"rendered":"<h2 class=\"wp-block-heading\" id=\"h-introduction-to-superficial-rockwell-hardness-testers\"><strong>Introduction to Superficial Rockwell Hardness Testers<\/strong><\/h2>\n\n\n\n<p>A <strong>superficial Rockwell hardness tester<\/strong> is a specialized hardness testing machine designed to measure the hardness of thin materials, surface-treated components, and precision parts without causing excessive indentation. Compared with standard Rockwell hardness testers, superficial models use lower test forces, making them ideal for specimens that cannot withstand conventional Rockwell loads.<\/p>\n\n\n\n<p>Superficial Rockwell hardness testers are widely used in precision manufacturing, heat treatment, aerospace, automotive, electronics, and quality control laboratories. They provide fast, direct hardness readings while minimizing damage to finished components and thin materials.<\/p>\n\n\n\n<p>Modern superficial Rockwell hardness testers are available in manual, digital, and automatic configurations to meet the needs of both laboratory testing and high-volume production environments.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-what-is-a-superficial-rockwell-hardness-tester\"><strong>What Is a Superficial Rockwell Hardness Tester?<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-definition-and-purpose\"><strong>Definition und Zweck<\/strong><\/h3>\n\n\n\n<p>A <strong>superficial Rockwell hardness tester<\/strong> is a benchtop hardness testing instrument that measures material hardness using the Rockwell indentation principle with reduced test forces.<\/p>\n\n\n\n<p>It is primarily used for:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Thin sheet metals<\/li>\n\n\n\n<li><a href=\"https:\/\/hardnesstests.com\/de_de_formal\/products\/\">Surface-hardened materials<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/hardnesstests.com\/de_de_formal\/products\/\">Precision machined parts<\/a><\/li>\n\n\n\n<li>Small components<\/li>\n\n\n\n<li>Coated materials<\/li>\n\n\n\n<li>Finished products requiring minimal surface damage<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-how-a-superficial-rockwell-hardness-tester-works\"><strong>How a Superficial Rockwell Hardness Tester Works<\/strong><\/h3>\n\n\n\n<p>The testing sequence includes:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Applying a <strong>3 kgf minor load<\/strong> to establish the reference position.<\/li>\n\n\n\n<li>Applying a <strong>15 kgf, 30 kgf, or 45 kgf major load<\/strong>, depending on the selected superficial Rockwell scale.<\/li>\n\n\n\n<li>Removing the major load while maintaining the minor load.<\/li>\n\n\n\n<li>Measuring the permanent indentation depth electronically or mechanically.<\/li>\n\n\n\n<li>Displaying the superficial Rockwell hardness value directly.<\/li>\n<\/ol>\n\n\n\n<p>This method provides accurate hardness measurements while producing significantly smaller indentations than the standard Rockwell test.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-understanding-the-superficial-rockwell-test\"><strong>Understanding the Superficial Rockwell Test<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-minor-load-and-major-load\"><strong>Minor Load and Major Load<\/strong><\/h3>\n\n\n\n<p>Unlike the standard Rockwell method, superficial testing uses:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Minor load:<\/strong> 3 kgf<\/li>\n\n\n\n<li><strong>Major loads:<\/strong> 15 kgf, 30 kgf, or 45 kgf<\/li>\n<\/ul>\n\n\n\n<p>The reduced forces help prevent excessive deformation of thin or delicate specimens.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-superficial-rockwell-scales\"><strong>Superficial Rockwell Scales<\/strong><\/h3>\n\n\n\n<p>Common superficial Rockwell scales include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>HR15N<\/strong><\/li>\n\n\n\n<li><strong>HR30N<\/strong><\/li>\n\n\n\n<li><strong>HR45N<\/strong><\/li>\n\n\n\n<li><strong>HR15T<\/strong><\/li>\n\n\n\n<li><strong>HR30T<\/strong><\/li>\n\n\n\n<li><strong>HR45T<\/strong><\/li>\n<\/ul>\n\n\n\n<p>Die <strong>N scales<\/strong> use a diamond cone indenter and are suitable for harder materials, while the <strong>T scales<\/strong> use a tungsten carbide ball indenter for softer materials.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"618\" height=\"800\" src=\"https:\/\/hardnesstests.com\/wp-content\/uploads\/2026\/01\/31-618x800.jpg\" alt=\"Superficial Rockwell hardness tester measuring thin metal sheet\" class=\"wp-image-30289\" srcset=\"https:\/\/hardnesstests.com\/wp-content\/uploads\/2026\/01\/31-618x800.jpg 618w, https:\/\/hardnesstests.com\/wp-content\/uploads\/2026\/01\/31-232x300.jpg 232w, https:\/\/hardnesstests.com\/wp-content\/uploads\/2026\/01\/31-9x12.jpg 9w, https:\/\/hardnesstests.com\/wp-content\/uploads\/2026\/01\/31-700x906.jpg 700w, https:\/\/hardnesstests.com\/wp-content\/uploads\/2026\/01\/31-150x194.jpg 150w, https:\/\/hardnesstests.com\/wp-content\/uploads\/2026\/01\/31.jpg 736w\" sizes=\"auto, (max-width: 618px) 100vw, 618px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-indenters-and-test-forces\"><strong>Indenters and Test Forces<\/strong><\/h3>\n\n\n\n<p>Superficial Rockwell hardness testers typically use:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><a href=\"https:\/\/hardnesstests.com\/de_de_formal\/products\/\">120\u00b0 diamond cone (Brale) indenter<\/a><\/strong><\/li>\n\n\n\n<li><strong>1\/16-inch tungsten carbide ball indenter<\/strong><\/li>\n<\/ul>\n\n\n\n<p>The choice depends on material hardness and the selected test scale.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-types-of-superficial-rockwell-hardness-testers\"><strong>Types of Superficial Rockwell Hardness Testers<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-manual-models\"><strong>Manual Models<\/strong><\/h3>\n\n\n\n<p>Manual testers are ideal for:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Small laboratories<\/li>\n\n\n\n<li>Educational institutions<\/li>\n\n\n\n<li>Low-volume testing<\/li>\n\n\n\n<li>Budget-conscious users<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-digital-models\"><strong>Digital Models<\/strong><\/h3>\n\n\n\n<p>Digital systems provide:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Automatic hardness calculation<\/li>\n\n\n\n<li>Touchscreen operation<\/li>\n\n\n\n<li>Multi-scale selection<\/li>\n\n\n\n<li>Statistische Analyse<\/li>\n\n\n\n<li>Datenspeicherung<\/li>\n<\/ul>\n\n\n\n<p>These features improve efficiency and reduce operator error.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-automatic-models\"><strong>Automatic Models<\/strong><\/h3>\n\n\n\n<p>Automatic superficial Rockwell hardness testers offer:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Motorized loading<\/li>\n\n\n\n<li>Automatic test cycles<\/li>\n\n\n\n<li>Sample positioning<\/li>\n\n\n\n<li>Digital reporting<\/li>\n\n\n\n<li>Hohe Wiederholbarkeit<\/li>\n<\/ul>\n\n\n\n<p>They are well suited for production environments requiring consistent inspection.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-benchtop-systems\"><strong>Benchtop Systems<\/strong><\/h3>\n\n\n\n<p>Benchtop models provide excellent stability and precision for routine laboratory and manufacturing applications.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-key-features-of-modern-superficial-rockwell-hardness-testers\"><strong>Key Features of Modern Superficial Rockwell Hardness Testers<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-high-precision-load-control\"><strong>High-Precision Load Control<\/strong><\/h3>\n\n\n\n<p>Closed-loop loading systems ensure accurate and repeatable force application.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-digital-display-and-touchscreen\"><strong>Digital Display and Touchscreen<\/strong><\/h3>\n\n\n\n<p>Modern interfaces simplify operation and provide instant access to test results and system settings.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-automatic-test-cycle\"><strong>Automatic Test Cycle<\/strong><\/h3>\n\n\n\n<p>Automated loading, unloading, and hardness calculation improve productivity while minimizing operator influence.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-data-storage-and-connectivity\"><strong>Datenspeicherung und Konnektivit\u00e4t<\/strong><\/h3>\n\n\n\n<p>Many systems support:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>USB export<\/li>\n\n\n\n<li>Ethernet communication<\/li>\n\n\n\n<li>Printer connectivity<\/li>\n\n\n\n<li>Statistical process control (SPC)<\/li>\n\n\n\n<li>Laboratory Information Management System (LIMS) integration<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-applications-of-superficial-rockwell-hardness-testers\"><strong>Applications of Superficial Rockwell Hardness Testers<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-thin-metal-sheets\"><strong>Thin Metal Sheets<\/strong><\/h3>\n\n\n\n<p>Superficial testing minimizes deformation while providing reliable hardness measurements.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-surface-hardened-components\"><strong>Surface-Hardened Components<\/strong><\/h3>\n\n\n\n<p>Ideal for evaluating:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Carburized parts<\/li>\n\n\n\n<li>Nitrided components<\/li>\n\n\n\n<li>Induction-hardened surfaces<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-precision-parts\"><strong>Precision Parts<\/strong><\/h3>\n\n\n\n<p>Small gears, bearings, springs, and precision-machined components benefit from reduced indentation depth.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-coated-materials\"><strong>Coated Materials<\/strong><\/h3>\n\n\n\n<p>The lower test force helps reduce substrate influence when evaluating certain coated components.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-heat-treated-components\"><strong>Heat-Treated Components<\/strong><\/h3>\n\n\n\n<p>Manufacturers use superficial Rockwell hardness testers to verify hardness after heat treatment while preserving finished surfaces.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-how-to-choose-the-right-superficial-rockwell-hardness-tester\"><strong>How to Choose the Right Superficial Rockwell Hardness Tester<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-material-type\"><strong>Material Typ<\/strong><\/h3>\n\n\n\n<p>Select a tester that supports the superficial Rockwell scales appropriate for your materials.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-specimen-thickness\"><strong>Specimen Thickness<\/strong><\/h3>\n\n\n\n<p>Ensure the instrument is designed for thin sections or delicate components without causing excessive indentation.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-automation-requirements\"><strong>Automation Requirements<\/strong><\/h3>\n\n\n\n<p>Consider features such as:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Automatic loading<\/li>\n\n\n\n<li>Motorized stages<\/li>\n\n\n\n<li>Digital reporting<\/li>\n\n\n\n<li>Statistische Analyse<\/li>\n\n\n\n<li>Production line integration<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-compliance-with-standards\"><strong>Compliance with Standards<\/strong><\/h3>\n\n\n\n<p>Choose equipment that complies with internationally recognized ASTM and ISO testing standards.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-calibration-and-maintenance\"><strong>Kalibrierung und Wartung<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-certified-hardness-test-blocks\"><strong>Certified Hardness Test Blocks<\/strong><\/h3>\n\n\n\n<p>Routine verification should be performed using certified superficial Rockwell hardness test blocks.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-routine-verification\"><strong>Routine Verification<\/strong><\/h3>\n\n\n\n<p>Regular checks help maintain accuracy, repeatability, and traceability.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"735\" height=\"490\" src=\"https:\/\/hardnesstests.com\/wp-content\/uploads\/2026\/01\/21.jpg\" alt=\"Superficial Rockwell hardness tester measuring thin metal sheet\" class=\"wp-image-30256\" srcset=\"https:\/\/hardnesstests.com\/wp-content\/uploads\/2026\/01\/21.jpg 735w, https:\/\/hardnesstests.com\/wp-content\/uploads\/2026\/01\/21-400x267.jpg 400w, https:\/\/hardnesstests.com\/wp-content\/uploads\/2026\/01\/21-18x12.jpg 18w, https:\/\/hardnesstests.com\/wp-content\/uploads\/2026\/01\/21-700x467.jpg 700w, https:\/\/hardnesstests.com\/wp-content\/uploads\/2026\/01\/21-150x100.jpg 150w\" sizes=\"auto, (max-width: 735px) 100vw, 735px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-preventive-maintenance\"><strong>Preventive Maintenance<\/strong><\/h3>\n\n\n\n<p>Maintenance recommendations include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Cleaning the indenter<\/li>\n\n\n\n<li>\u00dcberpr\u00fcfen der Genauigkeit der Ladung<\/li>\n\n\n\n<li>Inspecting mechanical components<\/li>\n\n\n\n<li>Updating software for digital models<\/li>\n\n\n\n<li>Performing scheduled calibration<\/li>\n<\/ul>\n\n\n\n<p>Routine maintenance helps maximize equipment performance and service life.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-advantages-and-limitations\"><strong>Vorteile und Beschr\u00e4nkungen<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-advantages\"><strong>Vorteile<\/strong><\/h3>\n\n\n\n<p>Superficial Rockwell hardness testers provide:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Small indentation size<\/li>\n\n\n\n<li>High testing accuracy<\/li>\n\n\n\n<li>Fast direct readings<\/li>\n\n\n\n<li>Ausgezeichnete Wiederholbarkeit<\/li>\n\n\n\n<li>Minimal specimen damage<\/li>\n\n\n\n<li>Geeignet f\u00fcr d\u00fcnne und empfindliche Materialien<\/li>\n\n\n\n<li>Easy operation<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-limitations\"><strong>Beschr\u00e4nkungen<\/strong><\/h3>\n\n\n\n<p>Potential limitations include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Limited to relatively thin specimens and specific applications<\/li>\n\n\n\n<li>Not intended for very thick or rough components<\/li>\n\n\n\n<li>Requires proper specimen support<\/li>\n\n\n\n<li>Routine calibration is essential<\/li>\n<\/ul>\n\n\n\n<p>Selecting the correct tester and scale ensures reliable measurement results.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-industry-standards-and-compliance\"><strong>Industriestandards und Compliance<\/strong><\/h2>\n\n\n\n<p>Common standards for <strong>superficial Rockwell hardness tester<\/strong> operation include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>ASTM E18 \u2013 Standard Test Methods for Rockwell Hardness of Metallic Materials<\/li>\n\n\n\n<li>ISO 6508 \u2013 Metallic Materials\u2014Rockwell Hardness Test<\/li>\n\n\n\n<li>ASTM E140 \u2013 Hardness Conversion Tables<\/li>\n\n\n\n<li>ISO\/IEC 17025 (for accredited testing laboratories)<\/li>\n<\/ul>\n\n\n\n<p>Official references:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.astm.org\/?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">ASTM International<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.iso.org\/?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noreferrer noopener\">ISO Standards Organization<\/a><\/li>\n<\/ul>\n\n\n\n<p>Following these standards helps ensure accurate, repeatable, and internationally recognized hardness measurements.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-frequently-asked-questions\"><strong>H\u00e4ufig gestellte Fragen<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-1-what-is-a-superficial-rockwell-hardness-tester\"><strong>1. What is a superficial Rockwell hardness tester?<\/strong><\/h3>\n\n\n\n<p>A superficial Rockwell hardness tester is a hardness testing machine that uses lower test forces to measure the hardness of thin materials, surface-treated components, and precision parts.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-2-what-is-the-difference-between-standard-and-superficial-rockwell-testing\"><strong>2. What is the difference between standard and superficial Rockwell testing?<\/strong><\/h3>\n\n\n\n<p>Standard Rockwell testing uses a 10 kgf minor load with major loads of 60, 100, or 150 kgf, while superficial Rockwell testing uses a 3 kgf minor load with major loads of 15, 30, or 45 kgf.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-3-which-superficial-rockwell-scales-are-commonly-used\"><strong>3. Which superficial Rockwell scales are commonly used?<\/strong><\/h3>\n\n\n\n<p>The most common scales include HR15N, HR30N, HR45N, HR15T, HR30T, and HR45T.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-4-which-materials-are-suitable-for-superficial-rockwell-testing\"><strong>4. Which materials are suitable for superficial Rockwell testing?<\/strong><\/h3>\n\n\n\n<p>Thin sheet metals, precision components, surface-hardened parts, coated materials, and small finished products are common applications.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-5-can-digital-superficial-rockwell-hardness-testers-export-data\"><strong>5. Can digital superficial Rockwell hardness testers export data?<\/strong><\/h3>\n\n\n\n<p>Yes. Many digital models support USB, Ethernet, printer output, and software integration for quality management.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-6-how-often-should-a-superficial-rockwell-hardness-tester-be-calibrated\"><strong>6. How often should a superficial Rockwell hardness tester be calibrated?<\/strong><\/h3>\n\n\n\n<p>Routine verification with certified hardness test blocks and periodic calibration according to manufacturer recommendations and applicable standards are recommended.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-conclusion\"><strong>Fazit<\/strong><\/h2>\n\n\n\n<p>A <strong>superficial Rockwell hardness tester<\/strong> is the preferred solution for measuring the hardness of thin materials, precision components, and surface-treated parts where standard Rockwell testing may produce excessive indentation. Its lower test forces, high accuracy, and fast direct-reading capability make it an essential instrument for laboratories, manufacturers, and quality control professionals.<\/p>\n\n\n\n<p>By selecting the appropriate superficial Rockwell hardness tester with the required scales, automation features, and standards compliance, organizations can improve testing efficiency, protect delicate components, and ensure reliable, traceable hardness measurements.<\/p>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>Introduction to Superficial Rockwell Hardness Testers A superficial Rockwell hardness tester is a specialized hardness testing machine designed to measure<\/p>","protected":false},"author":4,"featured_media":30280,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[117],"tags":[234],"class_list":["post-30965","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hardness-tester","tag-superficial-rockwell-hardness-tester"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.4 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Superficial Rockwell Hardness Tester: Features, Applications<\/title>\n<meta name=\"description\" content=\"Learn about superficial Rockwell hardness tester systems, including working principles and expert tips for selecting the right hardness testing machine.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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