{"id":30941,"date":"2026-06-22T08:07:58","date_gmt":"2026-06-22T08:07:58","guid":{"rendered":"https:\/\/hardnesstests.com\/?p=30941"},"modified":"2026-06-22T08:08:00","modified_gmt":"2026-06-22T08:08:00","slug":"microhardness-testing","status":"publish","type":"post","link":"https:\/\/hardnesstests.com\/sk\/microhardness-testing\/","title":{"rendered":"Microhardness Testing: Complete Guide to Methods, Equipment and Applications"},"content":{"rendered":"<h2 class=\"wp-block-heading\" id=\"h-introduction-to-microhardness-testing\"><strong>Introduction to Microhardness Testing<\/strong><\/h2>\n\n\n\n<p><strong>Testovanie mikrotvrdosti<\/strong> is a specialized materials testing method used to evaluate the hardness of very small regions, thin coatings, microstructures, and precision components. Unlike conventional hardness tests such as Rockwell or Brinell, microhardness testing uses low test loads and microscopic indentation measurements to determine material hardness with exceptional accuracy.<\/p>\n\n\n\n<p>The technique is widely used in quality control, research and development, metallurgy, electronics, aerospace, automotive manufacturing, and surface engineering. It enables engineers to measure localized hardness values that would otherwise be impossible to evaluate using standard hardness testing methods.<\/p>\n\n\n\n<p>As materials become more sophisticated and applications demand tighter quality standards, microhardness testing continues to play a critical role in modern materials characterization.<\/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-microhardness-testing\"><strong>What Is Microhardness Testing?<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-definition-and-purpose\"><strong>Definition and Purpose<\/strong><\/h3>\n\n\n\n<p><strong>Testovanie mikrotvrdosti<\/strong> is a low-force indentation method that measures a material\u2019s resistance to localized plastic deformation using a diamond indenter.<\/p>\n\n\n\n<p>The test is commonly performed to:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/hardnesstests.com\/sk\/products\/\">Measure thin coatings<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/hardnesstests.com\/sk\/products\/\">Evaluate microstructures<\/a><\/li>\n\n\n\n<li>Analyze welds<\/li>\n\n\n\n<li><a href=\"https:\/\/hardnesstests.com\/sk\/products\/\">Overenie procesov tepeln\u00e9ho spracovania<\/a><\/li>\n\n\n\n<li>Study hardness gradients<\/li>\n\n\n\n<li>Support failure analysis<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-importance-in-materials-characterization\"><strong>Importance in Materials Characterization<\/strong><\/h3>\n\n\n\n<p>Many engineered materials contain microscopic features with different hardness levels. Microhardness testing allows these variations to be measured individually, providing valuable information about material performance and manufacturing quality.<\/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-principles-of-microhardness-testing\"><strong>Principles of Microhardness Testing<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-indentation-based-hardness-measurement\"><strong>Indentation-Based Hardness Measurement<\/strong><\/h3>\n\n\n\n<p>Microhardness testing works by applying a controlled load to a diamond indenter pressed into the specimen surface.<\/p>\n\n\n\n<p>The resulting indentation is measured under magnification and used to calculate hardness values.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-low-load-testing-fundamentals\"><strong>Low-Load Testing Fundamentals<\/strong><\/h3>\n\n\n\n<p>Typical test loads range from:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>10 gf<\/li>\n\n\n\n<li>25 gf<\/li>\n\n\n\n<li>50 gf<\/li>\n\n\n\n<li>100 gf<\/li>\n\n\n\n<li>300 gf<\/li>\n\n\n\n<li>500 gf<\/li>\n\n\n\n<li>1000 gf<\/li>\n<\/ul>\n\n\n\n<p>These low loads allow testing of extremely small areas without significant specimen damage.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"800\" src=\"https:\/\/hardnesstests.com\/wp-content\/uploads\/2026\/02\/70-600x800.jpg\" alt=\"Microhardness testing on metal coating sample\" class=\"wp-image-30429\" srcset=\"https:\/\/hardnesstests.com\/wp-content\/uploads\/2026\/02\/70-600x800.jpg 600w, https:\/\/hardnesstests.com\/wp-content\/uploads\/2026\/02\/70-225x300.jpg 225w, https:\/\/hardnesstests.com\/wp-content\/uploads\/2026\/02\/70-9x12.jpg 9w, https:\/\/hardnesstests.com\/wp-content\/uploads\/2026\/02\/70-700x933.jpg 700w, https:\/\/hardnesstests.com\/wp-content\/uploads\/2026\/02\/70-150x200.jpg 150w, https:\/\/hardnesstests.com\/wp-content\/uploads\/2026\/02\/70.jpg 736w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-hardness-value-calculations\"><strong>Hardness Value Calculations<\/strong><\/h3>\n\n\n\n<p>Hardness values are calculated based on:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Applied force<\/li>\n\n\n\n<li>Indentation dimensions<\/li>\n\n\n\n<li>Standardized mathematical formulas<\/li>\n<\/ul>\n\n\n\n<p>Modern systems automatically calculate and display 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-types-of-microhardness-testing-methods\"><strong>Types of Microhardness Testing Methods<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-vickers-microhardness-testing\"><strong>Vickers Microhardness Testing<\/strong><\/h3>\n\n\n\n<p>The Vickers method uses a square-based diamond pyramid indenter.<\/p>\n\n\n\n<p>Key characteristics:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Vysok\u00e1 presnos\u0165<\/li>\n\n\n\n<li>Suitable for most materials<\/li>\n\n\n\n<li>Excellent repeatability<\/li>\n\n\n\n<li>Widely accepted worldwide<\/li>\n<\/ul>\n\n\n\n<p>Results are expressed as <strong>HV<\/strong> values.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-knoop-microhardness-testing\"><strong>Knoop Microhardness Testing<\/strong><\/h3>\n\n\n\n<p>The Knoop method uses an elongated diamond indenter that creates a shallower indentation.<\/p>\n\n\n\n<p>V\u00fdhody zah\u0155\u0148aj\u00fa:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Excellent for thin coatings<\/li>\n\n\n\n<li>Suitable for brittle materials<\/li>\n\n\n\n<li>Reduced penetration depth<\/li>\n\n\n\n<li>Minimal specimen damage<\/li>\n<\/ul>\n\n\n\n<p>Results are expressed as <strong>HK<\/strong> values.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-comparison-of-vickers-and-knoop-methods\"><strong>Comparison of Vickers and Knoop Methods<\/strong><\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Funkcia<\/th><th>Vickers<\/th><th>Knoop<\/th><\/tr><\/thead><tbody><tr><td>Tvar hrotov<\/td><td>\u0160tvorcov\u00e1 pyram\u00edda<\/td><td>Elongated Pyramid<\/td><\/tr><tr><td>Coating Evaluation<\/td><td>Very Good<\/td><td>Vynikaj\u00face<\/td><\/tr><tr><td>Brittle Materials<\/td><td>Good<\/td><td>Vynikaj\u00face<\/td><\/tr><tr><td>Penetration Depth<\/td><td>Deeper<\/td><td>Shallower<\/td><\/tr><tr><td>Hardness Unit<\/td><td>HV<\/td><td>HK<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-microhardness-testing-equipment\"><strong>Microhardness Testing Equipment<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-microhardness-testers\"><strong>Microhardness Testers<\/strong><\/h3>\n\n\n\n<p>Common tester types include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Manual systems<\/li>\n\n\n\n<li>Semi-automatic systems<\/li>\n\n\n\n<li>Fully automated hardness testers<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-diamond-indenters\"><strong>Diamond Indenters<\/strong><\/h3>\n\n\n\n<p>Microhardness testing relies on precision diamond indenters to ensure consistent measurements.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-optical-microscopes\"><strong>Optical Microscopes<\/strong><\/h3>\n\n\n\n<p>Microscopes are used to:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Observe indentations<\/li>\n\n\n\n<li>Measure dimensions<\/li>\n\n\n\n<li>Verify test quality<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-digital-imaging-systems\"><strong>Digital Imaging Systems<\/strong><\/h3>\n\n\n\n<p>Modern systems incorporate:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>High-resolution cameras<\/li>\n\n\n\n<li>Automated measurement software<\/li>\n\n\n\n<li>N\u00e1stroje \u0161tatistickej anal\u00fdzy<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-automated-hardness-testing-systems\"><strong>Automated Hardness Testing Systems<\/strong><\/h3>\n\n\n\n<p>Advanced systems provide:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Auto-focus capability<\/li>\n\n\n\n<li>Motorized stages<\/li>\n\n\n\n<li>Hardness mapping<\/li>\n\n\n\n<li>Automatizovan\u00e9 generovanie spr\u00e1v<\/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-microhardness-testing-procedure\"><strong>Microhardness Testing Procedure<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-sample-preparation\"><strong>Pr\u00edprava vzorky<\/strong><\/h3>\n\n\n\n<p>Proper specimen preparation is critical.<\/p>\n\n\n\n<p>The test surface should be:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Flat<\/li>\n\n\n\n<li>Clean<\/li>\n\n\n\n<li>Smooth<\/li>\n\n\n\n<li>Polished<\/li>\n<\/ul>\n\n\n\n<p>Surface defects can significantly affect measurement accuracy.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-test-load-selection\"><strong>Test Load Selection<\/strong><\/h3>\n\n\n\n<p>The load must be selected according to:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Typ materi\u00e1lu<\/li>\n\n\n\n<li>Specimen thickness<\/li>\n\n\n\n<li>Application requirements<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-indentation-measurement\"><strong>Indentation Measurement<\/strong><\/h3>\n\n\n\n<p>After the test, indentation dimensions are measured using optical or digital systems.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-data-analysis-and-reporting\"><strong>Data Analysis and Reporting<\/strong><\/h3>\n\n\n\n<p>Results are calculated and documented according to relevant industry 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-factors-affecting-microhardness-testing-accuracy\"><strong>Factors Affecting Microhardness Testing Accuracy<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-surface-finish\"><strong>Surface Finish<\/strong><\/h3>\n\n\n\n<p>Poor surface quality can distort indentation geometry and reduce accuracy.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-indentation-spacing\"><strong>Indentation Spacing<\/strong><\/h3>\n\n\n\n<p>Indentations must be spaced sufficiently apart to prevent interaction between deformation zones.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-calibration-and-verification\"><strong>Calibration and Verification<\/strong><\/h3>\n\n\n\n<p>Routine calibration ensures:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Measurement reliability<\/li>\n\n\n\n<li>Vysledovate\u013enos\u0165<\/li>\n\n\n\n<li>Dodr\u017eiavanie noriem<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-environmental-conditions\"><strong>Environmental Conditions<\/strong><\/h3>\n\n\n\n<p>Temperature, vibration, and lighting conditions can influence measurement quality.<\/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-of-microhardness-testing\"><strong>Advantages of Microhardness Testing<\/strong><\/h2>\n\n\n\n<p>Microhardness testing provides numerous advantages:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Extremely precise measurements<\/li>\n\n\n\n<li>Ideal for small test areas<\/li>\n\n\n\n<li>Suitable for thin coatings<\/li>\n\n\n\n<li>Excellent for metallographic studies<\/li>\n\n\n\n<li>Minimal specimen damage<\/li>\n\n\n\n<li>Vysok\u00e1 opakovate\u013enos\u0165<\/li>\n\n\n\n<li>Broad material compatibility<\/li>\n<\/ul>\n\n\n\n<p>These benefits make it indispensable in advanced materials testing.<\/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-limitations-of-microhardness-testing\"><strong>Limitations of Microhardness Testing<\/strong><\/h2>\n\n\n\n<p>Despite its strengths, some limitations include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Requires careful sample preparation<\/li>\n\n\n\n<li>More time-consuming than Rockwell testing<\/li>\n\n\n\n<li>Sensitive to operator technique<\/li>\n\n\n\n<li>Requires optical measurement equipment<\/li>\n\n\n\n<li>Higher equipment investment<\/li>\n<\/ul>\n\n\n\n<p>Proper procedures help minimize these challenges.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"457\" height=\"800\" src=\"https:\/\/hardnesstests.com\/wp-content\/uploads\/2026\/01\/56-457x800.jpg\" alt=\"Microhardness testing on metal coating sample\" class=\"wp-image-30358\" srcset=\"https:\/\/hardnesstests.com\/wp-content\/uploads\/2026\/01\/56-457x800.jpg 457w, https:\/\/hardnesstests.com\/wp-content\/uploads\/2026\/01\/56-171x300.jpg 171w, https:\/\/hardnesstests.com\/wp-content\/uploads\/2026\/01\/56-7x12.jpg 7w, https:\/\/hardnesstests.com\/wp-content\/uploads\/2026\/01\/56-700x1225.jpg 700w, https:\/\/hardnesstests.com\/wp-content\/uploads\/2026\/01\/56-150x263.jpg 150w, https:\/\/hardnesstests.com\/wp-content\/uploads\/2026\/01\/56.jpg 736w\" sizes=\"auto, (max-width: 457px) 100vw, 457px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-applications-of-microhardness-testing\"><strong>Applications of Microhardness Testing<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-thin-coatings-and-surface-treatments\"><strong>Thin Coatings and Surface Treatments<\/strong><\/h3>\n\n\n\n<p>Used for evaluating:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>PVD coatings<\/li>\n\n\n\n<li>CVD coatings<\/li>\n\n\n\n<li>Nitrided surfaces<\/li>\n\n\n\n<li>Hardened layers<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-welds-and-heat-affected-zones\"><strong>Welds and Heat-Affected Zones<\/strong><\/h3>\n\n\n\n<p>Engineers use microhardness testing to analyze hardness changes across welded joints.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-metallurgical-research\"><strong>Metallurgical Research<\/strong><\/h3>\n\n\n\n<p>Aplik\u00e1cie zah\u0155\u0148aj\u00fa:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Grain boundary analysis<\/li>\n\n\n\n<li>Phase transformation studies<\/li>\n\n\n\n<li>Alloy development<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-electronics-and-semiconductor-materials\"><strong>Electronics and Semiconductor Materials<\/strong><\/h3>\n\n\n\n<p>Common uses include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Semiconductor wafers<\/li>\n\n\n\n<li>Electronic packaging<\/li>\n\n\n\n<li>Microelectronic components<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-aerospace-and-automotive-industries\"><strong>Aerospace and Automotive Industries<\/strong><\/h3>\n\n\n\n<p>Manufacturers rely on microhardness testing to verify critical material properties.<\/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>Priemyseln\u00e9 normy a dodr\u017eiavanie predpisov<\/strong><\/h2>\n\n\n\n<p>Microhardness testing is governed by internationally recognized standards:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>ASTM E384<\/li>\n\n\n\n<li>ISO 6507 (Vickers)<\/li>\n\n\n\n<li>ISO 4545 (Knoop)<\/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>Compliance ensures consistency and comparability of results worldwide.<\/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>\u010casto kladen\u00e9 ot\u00e1zky<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-1-what-is-microhardness-testing-used-for\"><strong>1. What is microhardness testing used for?<\/strong><\/h3>\n\n\n\n<p>It is used to measure hardness in small regions, coatings, microstructures, and precision-engineered components.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-2-what-are-the-main-microhardness-testing-methods\"><strong>2. What are the main microhardness testing methods?<\/strong><\/h3>\n\n\n\n<p>The two most common methods are Vickers microhardness testing and Knoop microhardness testing.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-3-why-is-microhardness-testing-important\"><strong>3. Why is microhardness testing important?<\/strong><\/h3>\n\n\n\n<p>It allows localized hardness measurements that cannot be obtained using conventional hardness testing methods.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-4-can-microhardness-testing-measure-coatings\"><strong>4. Can microhardness testing measure coatings?<\/strong><\/h3>\n\n\n\n<p>Yes. It is one of the most effective techniques for evaluating thin coatings and surface treatments.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-5-what-industries-use-microhardness-testing\"><strong>5. What industries use microhardness testing?<\/strong><\/h3>\n\n\n\n<p>Aerospace, automotive, electronics, metallurgy, medical device manufacturing, and research laboratories.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-6-is-microhardness-testing-destructive\"><strong>6. Is microhardness testing destructive?<\/strong><\/h3>\n\n\n\n<p>The indentations are extremely small, making the test minimally destructive in most 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-conclusion\"><strong>Z\u00e1ver<\/strong><\/h2>\n\n\n\n<p><strong>Testovanie mikrotvrdosti<\/strong> is an essential tool for evaluating material hardness at the microscopic level. Its ability to measure small features, thin coatings, weld zones, and microstructures with exceptional precision makes it invaluable for quality control, research, and advanced manufacturing.<\/p>\n\n\n\n<p>By understanding the principles, methods, equipment, and applications of microhardness testing, engineers and researchers can make informed decisions that improve material performance, product reliability, and manufacturing efficiency.<\/p>","protected":false},"excerpt":{"rendered":"<p>Introduction to Microhardness Testing Microhardness testing is a specialized materials testing method used to evaluate the hardness of very small<\/p>","protected":false},"author":4,"featured_media":30280,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[117],"tags":[145],"class_list":["post-30941","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hardness-tester","tag-microhardness-testing"],"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>Microhardness Testing: Guide to Equipment and Applications<\/title>\n<meta name=\"description\" content=\"Discover microhardness testing, including Vickers and Knoop methods, testing procedures, equipment, standards, applications, advantages.\" \/>\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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