{"id":23669,"date":"2026-05-13T15:42:20","date_gmt":"2026-05-13T13:42:20","guid":{"rendered":"https:\/\/roder.it\/tests-de-durete-des-peintures-crayon-indentation\/"},"modified":"2026-10-05T21:17:57","modified_gmt":"2026-10-05T19:17:57","slug":"tests-de-durete-des-peintures-crayon-indentation","status":"publish","type":"page","link":"https:\/\/roder.it\/fr\/controles\/durete-des-materiaux\/tests-de-durete-des-peintures-crayon-indentation\/","title":{"rendered":"Tests de duret\u00e9 des peintures (crayon, indentation)"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Les tests de duret\u00e9 des peintures regroupent plusieurs techniques sp\u00e9cifiques d&rsquo;\u00e9valuation de la r\u00e9sistance des films de peintures, d&rsquo;\u00e9maux et de rev\u00eatements d\u00e9coratifs aux sollicitations m\u00e9caniques de surface : duret\u00e9 au crayon (pencil hardness), duret\u00e9 par indentation Buchholz, duret\u00e9 au pendule Persoz et K\u00f6nig, essais de r\u00e9sistance \u00e0 la rayure. Ce sont des m\u00e9thodes qualitatives et semi-quantitatives qui caract\u00e9risent des propri\u00e9t\u00e9s fonctionnelles importantes du rev\u00eatement : r\u00e9sistance \u00e0 l&rsquo;abrasion, \u00e0 la compression et aux dommages m\u00e9caniques typiques de l&rsquo;usage du produit rev\u00eatu. Elles sont particuli\u00e8rement utilis\u00e9es dans les rev\u00eatements pour l&rsquo;automobile, le mobilier, l&rsquo;\u00e9lectrom\u00e9nager, l&#8217;emballage et la quincaillerie.  <\/p>\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<div class=\"wp-block-cover is-light popmake-11245\" style=\"border-width:1px;border-top-left-radius:10px;border-top-right-radius:10px;border-bottom-left-radius:10px;border-bottom-right-radius:10px;min-height:250px;aspect-ratio:unset;\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"213\" class=\"wp-block-cover__image-background wp-image-14896 size-large\" alt=\"banner aiuto nella scelta dello strumento oppure della tecnologia\" src=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/banner_technical_support_choose_products-1024x213.png\" data-object-fit=\"cover\" srcset=\"https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/banner_technical_support_choose_products-1024x213.png 1024w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/banner_technical_support_choose_products-300x63.png 300w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/banner_technical_support_choose_products-768x160.png 768w, https:\/\/roder.it\/wp-content\/uploads\/2026\/06\/banner_technical_support_choose_products.png 1200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim\" style=\"background-color:#d3d6dc\"><\/span><div class=\"wp-block-cover__inner-container is-layout-constrained wp-container-core-cover-is-layout-a304f9a9 wp-block-cover-is-layout-constrained\">\n<p class=\"has-text-align-right has-ti-fg-color has-text-color has-link-color wp-elements-1 wp-block-paragraph\" style=\"font-size:clamp(21.536px, 1.346rem + ((1vw - 3.2px) * 1.726), 35px);\"><strong>Souhaitez-vous \u00eatre aid\u00e9 dans le choix du produit ?<\/strong><\/p>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-right is-layout-flex wp-container-core-buttons-is-layout-b507c051 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/roder.it\/contatti-roder-mail-indirizzo-stabilimento-oglianico-automazione-misure-controlli-industriali\/\">Cliquez ici !<\/a><\/div>\n<\/div>\n<\/div><\/div>\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<h2 class=\"wp-block-heading\">Essai de duret\u00e9 au crayon<\/h2><p class=\"wp-block-paragraph\">Le pencil hardness test (ISO 15184, ASTM D3363, JIS K 5600-5-4) utilise des crayons \u00e0 \u00e9crire de duret\u00e9 gradu\u00e9e normalis\u00e9e (de 9B, tr\u00e8s tendre, \u00e0 9H, tr\u00e8s dure, en passant par B, HB, F, H, 2H, etc.). L&rsquo;instrument d&rsquo;essai est un support m\u00e9canique (pencil hardness tester) qui maintient le crayon \u00e0 45\u00b0 par rapport \u00e0 la surface et applique une charge constante de 750 g (selon l&rsquo;ISO) pendant le mouvement de glissement. On commence par les crayons tendres et l&rsquo;on augmente progressivement la duret\u00e9 jusqu&rsquo;\u00e0 ce que le crayon laisse une rayure permanente dans le film ; la duret\u00e9 du rev\u00eatement est class\u00e9e comme la duret\u00e9 du crayon le plus tendre qui laisse une entaille (gouge), ou comme la plus dure qui ne laisse aucune rayure.  <\/p><h2 class=\"wp-block-heading\">Buchholz indentation test<\/h2><p class=\"wp-block-paragraph\">L&rsquo;essai Buchholz (ISO 2815) utilise un dispositif d\u00e9di\u00e9 qui applique pendant 30 secondes un cylindre aff\u00fbt\u00e9 (\u00e0 ar\u00eate tranchante de largeur calibr\u00e9e) sur la surface peinte sous un poids de 500 g. L&#8217;empreinte laiss\u00e9e est une fine ligne dont la longueur est mesur\u00e9e avec un microscope \u00e0 lentille 20\u00d7 ; la valeur de duret\u00e9 Buchholz est donn\u00e9e par le rapport 100\/L (o\u00f9 L est la longueur de l&#8217;empreinte en mm). Plus la duret\u00e9 est \u00e9lev\u00e9e, plus l&#8217;empreinte est petite et plus la valeur Buchholz est grande. L&rsquo;essai est particuli\u00e8rement utilis\u00e9 pour les rev\u00eatements automobiles, les \u00e9maux pour l&rsquo;\u00e9lectrom\u00e9nager et les vernis pour le bois.   <\/p><h2 class=\"wp-block-heading\">Duret\u00e9 au pendule K\u00f6nig et Persoz<\/h2><p class=\"wp-block-paragraph\">L&rsquo;essai au pendule Persoz (ISO 1522, m\u00e9thode Persoz) et l&rsquo;essai K\u00f6nig utilisent un pendule oscillant qui repose sur deux petites billes (saphir ou acier) pos\u00e9es sur la surface peinte. Le pendule est mis en oscillation \u00e0 partir d&rsquo;un angle d\u00e9fini ; par frottement interne entre les billes et le film de peinture, l&rsquo;amplitude de l&rsquo;oscillation d\u00e9cro\u00eet au fil du temps. La valeur de duret\u00e9 est le temps (en secondes) n\u00e9cessaire pour que l&rsquo;amplitude passe d&rsquo;un angle initial \u00e0 un angle final pr\u00e9d\u00e9fini. Les rev\u00eatements durs amortissent peu l&rsquo;oscillation (temps longs, duret\u00e9 \u00e9lev\u00e9e) ; les rev\u00eatements tendres l&rsquo;amortissent rapidement (temps courts, duret\u00e9 faible). Les m\u00e9thodes Persoz et K\u00f6nig diff\u00e8rent par leurs param\u00e8tres g\u00e9om\u00e9triques et leurs limites d&rsquo;amplitude.    <\/p><h2 class=\"wp-block-heading\">Applications<\/h2><p class=\"wp-block-paragraph\">Les tests de duret\u00e9 des peintures sont utilis\u00e9s : dans le contr\u00f4le qualit\u00e9 de nouvelles formulations de peintures et d&rsquo;\u00e9maux (R&amp;D), dans la caract\u00e9risation des rev\u00eatements automobiles (clearcoat, basecoat), dans les rev\u00eatements pour l&rsquo;\u00e9lectrom\u00e9nager et le mobilier, dans les peintures de sol, dans les rev\u00eatements pour emballages m\u00e9talliques (bo\u00eetes alimentaires) et dans les finitions pour le bois. La duret\u00e9 est un param\u00e8tre cl\u00e9 des sp\u00e9cifications commerciales du rev\u00eatement et influe sur la r\u00e9sistance \u00e0 l&rsquo;usure du produit fini. <\/p><h2 class=\"wp-block-heading\">Normes et \u00e9talonnage<\/h2><p class=\"wp-block-paragraph\">Les normes principales sont : ISO 15184 (crayon), ASTM D3363 (\u00c9tats-Unis, crayon), ISO 2815 (Buchholz), ISO 1522 (pendule Persoz et K\u00f6nig) et ASTM D4366. Les crayons pour le pencil hardness doivent \u00eatre d&rsquo;une marque certifi\u00e9e (par exemple crayons Mitsubishi ou Mars Lumograph), de duret\u00e9 d\u00e9finie selon les normes des crayons techniques. Le pendule exige des \u00e9chantillons d&rsquo;\u00e9talonnage en verre et en rev\u00eatements de r\u00e9f\u00e9rence pour la v\u00e9rification p\u00e9riodique du bon fonctionnement de l&rsquo;instrument. La temp\u00e9rature et l&rsquo;humidit\u00e9 de l&rsquo;environnement d&rsquo;essai (typiquement 23 \u00b0C, 50 % HR) sont prescrites par les normes.   <\/p>","protected":false},"excerpt":{"rendered":"<p>Pencil hardness testers et instruments pour duret\u00e9 Buchholz, Persoz, K\u00f6nig sur films de peinture.<\/p>\n","protected":false},"author":157040980,"featured_media":0,"parent":26358,"menu_order":5,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_yoast_wpseo_focuskw":"","_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"","_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","_wpcom_ai_launchpad_about_page":false,"_wpcom_ai_launchpad_gallery_page":false,"_wpcom_ai_launchpad_contact_page":false,"_wpcom_ai_launchpad_events_page":false,"_wpcom_ai_launchpad_video_page":false,"_wpcom_ai_launchpad_portfolio_piece":false,"_jetpack_hide_featured_image":false,"_jetpack_featured_image_duplicate_dismissed":0,"footnotes":""},"class_list":["post-23669","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Tests de duret\u00e9 des peintures (crayon, indentation) - RODER SRL<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/roder.it\/fr\/controles\/durete-des-materiaux\/tests-de-durete-des-peintures-crayon-indentation\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Tests de duret\u00e9 des peintures (crayon, indentation) - RODER SRL\" \/>\n<meta property=\"og:description\" content=\"Pencil hardness testers et instruments pour duret\u00e9 Buchholz, Persoz, K\u00f6nig sur films de peinture.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/roder.it\/fr\/controles\/durete-des-materiaux\/tests-de-durete-des-peintures-crayon-indentation\/\" \/>\n<meta property=\"og:site_name\" content=\"RODER SRL\" \/>\n<meta property=\"article:modified_time\" content=\"2026-10-05T19:17:57+00:00\" \/>\n<meta name=\"twitter:card\" 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