{"product_id":"automatic-scratch-resistance-tester","title":"Automatic Scratch Resistance Tester","description":"\u003ch2\u003eAutomatic Scratch Resistance Tester\u003c\/h2\u003e\n\u003cp\u003eThe Automatic Scratch Resistance Tester from Qualitest is designed to evaluate the scratch resistance of paints, coatings, varnishes, and related materials under controlled testing conditions. Coatings are used to protect surfaces, enhance appearance, and conceal substrate imperfections, while their hardness is an important indicator of mechanical strength, durability, and overall coating quality. Scratch testing provides an effective method for assessing coating hardness and resistance to surface damage.\u003c\/p\u003e\n\u003cp\u003eISO 1518, Paints and varnishes — Determination of scratch resistance, specifies a method for determining the resistance of single-coat or multi-coat paint, varnish, and related coating systems to scratching under a defined load. During the test, a specified stylus is drawn across the coated surface. Depending on the coating system, the stylus may penetrate through the coating to the substrate or, in a multi-coat system, reach an intermediate coating layer.\u003c\/p\u003e\n\u003cp\u003eScratch resistance testing is particularly useful for comparing the performance of different coating systems. It provides relative results for coated panels with significant differences in their resistance to scratching, making it suitable for quality control, product development, and comparative coating evaluation.\u003c\/p\u003e\n\u003cp\u003eFollowing the revision of the scratch resistance standard in 2011, the test method was divided into two approaches: Constant Loading (CL) and Variable Loading (VL).\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eConstant Loading (CL): A fixed load is maintained on the stylus throughout the scratch test. Results are expressed as the maximum load that does not produce visible damage to the coating.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eVariable Loading (VL): The stylus load increases continuously from zero during the test. The distance from the starting point to the location where a scratch becomes visible is measured, and the result is reported as the critical load.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eQualitest offers the Automatic Scratch Resistance Tester in CL and VL configurations for Constant Loading and Variable Loading applications. The instrument conforms to the latest ISO 1518 requirements and other applicable testing standards, providing controlled and repeatable evaluation of coating scratch resistance.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0786\/1859\/1543\/files\/a3_2f956c36-784c-47c3-bd93-0cc8f44c61e6.webp?v=1790233377\" alt=\"Automatic Scratch Resistance Tester\"\u003e\u003c\/p\u003e\n\u003ch2\u003eAutomatic Scratch Resistance Tester Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eLarge Movable Working Table\u003cbr\u003eFeatures a spacious working table with smooth left-to-right movement, allowing users to conveniently test different areas of the same coated panel.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eVersatile Sample Fixing Device\u003cbr\u003eThe specially designed fixing mechanism securely accommodates samples with different substrate sizes for stable and consistent testing.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSound and Light Alarm System\u003cbr\u003eProvides both audible and visual alerts when the stylus punctures through the sample panel, making test results easier to identify.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHigh-Hardness Stylus\u003cbr\u003eManufactured from high-hardness material to provide excellent durability and reliable performance during repeated scratch resistance testing.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAutomatic Scratch Resistance Tester\u003c\/h2\u003e\n\u003cp\u003eManual fingernail scratches and hand-operated testing methods can introduce operator-dependent variations and inconsistent results. During a scratch test, coating failure can occur through several mechanisms, including elastic deformation, permanent deformation, or cracking of the coating surface.\u003c\/p\u003e\n\u003cp\u003eThe Automatic Scratch Resistance Tester provides controlled and repeatable scratch testing by applying precisely defined forces to the coating surface. This reduces operator influence and helps laboratories obtain consistent, reliable data for evaluating coating scratch resistance and mechanical performance.\u003c\/p\u003e\n\u003ch2\u003eConstant and Variable Loading Methods\u003c\/h2\u003e\n\u003cp\u003eTo evaluate coating scratch resistance under different loading conditions, the Automatic Scratch Resistance Tester is available in two configurations: Variable Loading (VL) and Constant Loading (CL). Each model uses a different loading method to assess coating behavior under controlled scratch conditions.\u003c\/p\u003e\n\u003ch3\u003eVariable Loading Method — Model QT-ASRT-VL\u003c\/h3\u003e\n\u003cp\u003eThe QT-ASRT-VL Automatic Scratch Resistance Tester begins the test with zero applied load and continuously increases the force as the stylus moves across the coated panel. A 0.03 mm conical sapphire or diamond stylus is used to create a progressively loaded scratch track.\u003c\/p\u003e\n\u003cp\u003eThe increasing load allows users to identify the critical load at which visible coating damage occurs. This method is suitable for determining the load required to produce coating failure, such as cracking, peeling, or other visible surface damage.\u003c\/p\u003e\n\u003ch3\u003eConstant Loading Method — Model QT-ASRT-CL\u003c\/h3\u003e\n\u003cp\u003eThe QT-ASRT-CL Automatic Scratch Resistance Tester applies a constant load throughout the scratch test using a 0.5 mm hemispherical hard-metal tip. Maintaining a consistent load provides controlled conditions for evaluating the coating's resistance to scratching and surface damage.\u003c\/p\u003e\n\u003cp\u003eThe constant-loading method is suitable for comparative evaluation of coatings exposed to repeated contact, rubbing, or scraping under a defined force.\u003c\/p\u003e\n\u003ch2\u003eInternational Standards and Compliance\u003c\/h2\u003e\n\u003cp\u003eThe Automatic Scratch Resistance Tester series supports scratch resistance testing according to recognized international standards, helping laboratories maintain consistent testing procedures across different coating applications.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eISO 1518-1 and ISO 1518-2: Specify methods for determining the scratch resistance of paints and varnishes using constant-loading and progressively increasing loading conditions.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBS 3900:E2: Provides a method for assessing the scratch resistance of paint coatings.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBS EN 13523-12: Specifies a test method for evaluating the scratch resistance of organic coatings applied to metallic substrates.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Automatic Scratch Resistance Tester can be used for evaluating a wide range of coating systems, including clear coatings, pigmented paints, protective finishes, and industrial coatings applied to metal substrates.\u003c\/p\u003e\n\u003ch2\u003eAutomated Hardware Features\u003c\/h2\u003e\n\u003cp\u003eThe Automatic Scratch Resistance Tester incorporates automated testing features designed to improve consistency, simplify operation, and support repeatable coating evaluation.\u003c\/p\u003e\n\u003ch3\u003eIntegrated Sound and Light Alarm System\u003c\/h3\u003e\n\u003cp\u003eThe integrated sound and light alarm system provides audible and visual alerts when the testing stylus penetrates through the coating and reaches the underlying sample panel. This provides a clear indication of coating failure and helps operators identify the test endpoint efficiently.\u003c\/p\u003e\n\u003ch3\u003ePrecision Multi-Area Testing Table\u003c\/h3\u003e\n\u003cp\u003eThe tester features a large working table with left-to-right movement, allowing multiple areas of the same coated panel to be tested without repeatedly repositioning the sample. This design improves testing efficiency when comparing different locations on a single panel.\u003c\/p\u003e\n\u003cp\u003eA dedicated sample fixing device securely holds substrates of different sizes, helping maintain stable sample positioning throughout the scratch test and supporting consistent test conditions.\u003c\/p\u003e\n\u003ch2\u003eAutomatic Scratch Resistance Tester Technical Specifications\u003c\/h2\u003e\n\u003ctable class=\"table\" border=\"1\" cellpadding=\"1\" cellspacing=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp class=\"text-align-center\"\u003e\u003cstrong\u003eOrdering information →\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"text-align-center\"\u003e\u003cstrong\u003eTechnical Parameter ↓\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp class=\"text-align-center\"\u003e\u003cstrong\u003eAutomatic Scratch Tester QT-ASRT-CL\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"text-align-center\"\u003e\u003cstrong\u003e（Constant-loading）\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp class=\"text-align-center\"\u003e\u003cstrong\u003eAutomatic Scratch Tester QT-ASRT-VL\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"text-align-center\"\u003e\u003cstrong\u003e（Variable-loading)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"text-align-center\"\u003e\u003cstrong\u003eConform standards\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp class=\"text-align-center\"\u003e\u003cstrong\u003eISO 1518-1\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eBS 3900：E2, BS EN 13523-12\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd class=\"text-align-center\"\u003e\u003cstrong\u003eISO 1518-2\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"text-align-center\"\u003e\u003cstrong\u003eStylus\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"text-align-center\"\u003eHaving a hemispherical hard-metal tip of radius 0.5mm\u003c\/td\u003e\n\u003ctd class=\"text-align-center\"\u003eConed sapphire or diamond, the tip radius is 0.03mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"text-align-center\"\u003e\u003cstrong\u003eAngle between stylus and sample\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp class=\"text-align-center\"\u003e90°\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd class=\"text-align-center\"\u003e90°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"text-align-center\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"text-align-center\"\u003e0.5N×1，1N×1，2N×2，5N×1，10N×1\u003c\/td\u003e\n\u003ctd class=\"text-align-center\"\u003e0g～50g or 0g～100g or 0g～200g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"text-align-center\"\u003e\u003cstrong\u003eMotor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"text-align-center\"\u003e30W  220V  50HZ (110V on request)\u003c\/td\u003e\n\u003ctd class=\"text-align-center\"\u003e60W  220V  50HZ (110v on request)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"text-align-center\"\u003e\u003cstrong\u003eStylus Moving Speed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"text-align-center\"\u003e（35±5）mm\/s\u003c\/td\u003e\n\u003ctd class=\"text-align-center\"\u003e(10±2） mm\/s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"text-align-center\"\u003e\u003cstrong\u003eWorking Distance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"text-align-center\"\u003e120mm\u003c\/td\u003e\n\u003ctd class=\"text-align-center\"\u003e100mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"text-align-center\"\u003e\u003cstrong\u003eMax. Panel Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"text-align-center\" colspan=\"2\"\u003e200mm×100mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"text-align-center\"\u003e\u003cstrong\u003eMax. Panel Thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"text-align-center\"\u003eLess than 1 mm\u003c\/td\u003e\n\u003ctd class=\"text-align-center\"\u003eLess than 12 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"text-align-center\"\u003e\u003cstrong\u003eDimensions（L×W×H）\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp class=\"text-align-center\"\u003e560mm×270mm×380mm\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd class=\"text-align-center\"\u003e580mm×270mm×300mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"text-align-center\"\u003e\u003cstrong\u003eNet Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp class=\"text-align-center\"\u003e17 KG\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp class=\"text-align-center\"\u003e17.5 KG\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp class=\"text-align-center\"\u003e\u003cstrong\u003eOptional Accessories\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\" rowspan=\"1\"\u003e\n\u003cul\u003e\n\u003cli\u003eQT-ASRT-ACC 1003---Scratch stylus A, having a hemispherical hard-metal tip of radius (0,50 ± 0,01) mm.\u003c\/li\u003e\n\u003cli\u003eQT-ASRT-ACC 1004---Scratch stylus B, having a hemispherical hard-metal tip of radius (0,25 ± 0,01) mm.\u003c\/li\u003e\n\u003cli\u003eQT-ASRT-ACC 1007---Stylus for QT-ASRT-VL\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Qualitest USA LC","offers":[{"title":"Default Title","offer_id":53041611342135,"sku":null,"price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0786\/1859\/1543\/files\/automatic-scratch-resistance-tes.webp?v=1790233452","url":"https:\/\/qualitest.us\/fr\/products\/automatic-scratch-resistance-tester","provider":"Qualitest USA LC","version":"1.0","type":"link"}