{"id":2741,"date":"2026-08-04T18:45:10","date_gmt":"2026-08-04T15:45:10","guid":{"rendered":"https:\/\/bfblast.com\/what-is-surface-profile-a-critical-factor-determining-coating-lifespan-2026\/"},"modified":"2026-08-04T18:45:10","modified_gmt":"2026-08-04T15:45:10","slug":"what-is-surface-profile-a-critical-factor-determining-coating-lifespan-2026","status":"publish","type":"post","link":"https:\/\/bfblast.com\/en\/what-is-surface-profile-a-critical-factor-determining-coating-lifespan-2026\/","title":{"rendered":"What Is Surface Profile? A Critical Factor Determining Coating Lifespan (2026)"},"content":{"rendered":"<p>What is surface roughness (surface profile)? How are Ra and Rz values measured? Why is the ideal surface profile important after sandblasting? A detailed guide.   <\/p><div id=\"ez-toc-container\" class=\"ez-toc-v2_0_86 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u0130\u00e7indekiler<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/bfblast.com\/en\/what-is-surface-profile-a-critical-factor-determining-coating-lifespan-2026\/#What_Is_Surface_Profile\" >What Is Surface Profile?<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/bfblast.com\/en\/what-is-surface-profile-a-critical-factor-determining-coating-lifespan-2026\/#What_Is_Surface_Roughness\" >What Is Surface Roughness?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/bfblast.com\/en\/what-is-surface-profile-a-critical-factor-determining-coating-lifespan-2026\/#Why_Is_Surface_Roughness_Important\" >Why Is Surface Roughness Important?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/bfblast.com\/en\/what-is-surface-profile-a-critical-factor-determining-coating-lifespan-2026\/#What_Kind_of_Problems_Does_Insufficient_Roughness_Cause\" >What Kind of Problems Does Insufficient Roughness Cause?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/bfblast.com\/en\/what-is-surface-profile-a-critical-factor-determining-coating-lifespan-2026\/#Why_Is_Excessive_Roughness_Harmful\" >Why Is Excessive Roughness Harmful?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/bfblast.com\/en\/what-is-surface-profile-a-critical-factor-determining-coating-lifespan-2026\/#What_Are_Ra_and_Rz_Values\" >What Are Ra and Rz Values?<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/bfblast.com\/en\/what-is-surface-profile-a-critical-factor-determining-coating-lifespan-2026\/#Ra_Average_Roughness\" >Ra (Average Roughness)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/bfblast.com\/en\/what-is-surface-profile-a-critical-factor-determining-coating-lifespan-2026\/#Rz_Maximum_Height_Profile\" >Rz (Maximum Height Profile)<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/bfblast.com\/en\/what-is-surface-profile-a-critical-factor-determining-coating-lifespan-2026\/#How_Does_Sandblasting_Create_Surface_Roughness\" >How Does Sandblasting Create Surface Roughness?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/bfblast.com\/en\/what-is-surface-profile-a-critical-factor-determining-coating-lifespan-2026\/#Which_Abrasive_Creates_What_Kind_of_Profile\" >Which Abrasive Creates What Kind of Profile?<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/bfblast.com\/en\/what-is-surface-profile-a-critical-factor-determining-coating-lifespan-2026\/#Steel_Grit\" >Steel Grit<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/bfblast.com\/en\/what-is-surface-profile-a-critical-factor-determining-coating-lifespan-2026\/#Steel_Shot\" >Steel Shot<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/bfblast.com\/en\/what-is-surface-profile-a-critical-factor-determining-coating-lifespan-2026\/#Garnet\" >Garnet<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/bfblast.com\/en\/what-is-surface-profile-a-critical-factor-determining-coating-lifespan-2026\/#Aluminum_Oxide\" >Aluminum Oxide<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/bfblast.com\/en\/what-is-surface-profile-a-critical-factor-determining-coating-lifespan-2026\/#What_Should_the_Ideal_Surface_Roughness_Be_in_Microns\" >What Should the Ideal Surface Roughness Be in Microns?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/bfblast.com\/en\/what-is-surface-profile-a-critical-factor-determining-coating-lifespan-2026\/#How_Is_Surface_Roughness_Measured\" >How Is Surface Roughness Measured?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/bfblast.com\/en\/what-is-surface-profile-a-critical-factor-determining-coating-lifespan-2026\/#Profile_Meter\" >Profile Meter<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/bfblast.com\/en\/what-is-surface-profile-a-critical-factor-determining-coating-lifespan-2026\/#Testex_Replica_Tape\" >Testex Replica Tape<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/bfblast.com\/en\/what-is-surface-profile-a-critical-factor-determining-coating-lifespan-2026\/#Surface_Comparison_Comparators\" >Surface Comparison Comparators<\/a><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/bfblast.com\/en\/what-is-surface-profile-a-critical-factor-determining-coating-lifespan-2026\/#The_Relationship_Between_Surface_Profile_and_Sa_25\" >The Relationship Between Surface Profile and Sa 2.5<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/bfblast.com\/en\/what-is-surface-profile-a-critical-factor-determining-coating-lifespan-2026\/#Conclusion\" >Conclusion<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/bfblast.com\/en\/what-is-surface-profile-a-critical-factor-determining-coating-lifespan-2026\/#Take_Control_of_Surface_Quality_with_BF_BLAST\" >Take Control of Surface Quality with BF BLAST<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/bfblast.com\/en\/what-is-surface-profile-a-critical-factor-determining-coating-lifespan-2026\/#Tags\" >Tags<\/a><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n\n<h1 class=\"PDq2pG_selectionAnchorContainer\" data-section-id=\"gqs8ui\" data-start=\"454\" data-end=\"498\"><span class=\"ez-toc-section\" id=\"What_Is_Surface_Profile\"><\/span>What Is Surface Profile?<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p data-start=\"500\" data-end=\"630\">If you believe that the most important factor determining the success of a paint or coating system is the quality of the paint, you\u2019re not alone.<\/p>\n<p data-start=\"632\" data-end=\"693\">However, experts in industrial surface preparation know very well that;<\/p>\n<p data-start=\"695\" data-end=\"792\"><strong data-start=\"695\" data-end=\"792\">One of the most critical factors determining the service life of a coating is surface roughness (surface profile).<\/strong><\/p>\n<p data-start=\"794\" data-end=\"895\">Even the best paint system cannot deliver the expected performance on a poorly prepared surface.<\/p>\n<p data-start=\"897\" data-end=\"1087\">For this reason, surface roughness control is considered a critical quality parameter in many industries, ranging from shipbuilding to steel construction, and from energy facilities to the automotive sector.<\/p>\n<hr data-start=\"1089\" data-end=\"1092\">\n<h2 data-section-id=\"1bts8qe\" data-start=\"1094\" data-end=\"1121\"><span class=\"ez-toc-section\" id=\"What_Is_Surface_Roughness\"><\/span>What Is Surface Roughness?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"1123\" data-end=\"1239\">Surface roughness refers to the profile structure formed by microscopic peaks and valleys on a material&#8217;s surface.<\/p>\n<p data-start=\"1241\" data-end=\"1284\">In the English-language literature, this concept is generally:<\/p>\n<ul data-start=\"1286\" data-end=\"1340\">\n<li data-section-id=\"19r9li\" data-start=\"1286\" data-end=\"1303\">Surface Profile<\/li>\n<li data-section-id=\"1oqyai9\" data-start=\"1304\" data-end=\"1323\">Surface Roughness<\/li>\n<li data-section-id=\"w0hk0q\" data-start=\"1324\" data-end=\"1340\">Anchor Profile<\/li>\n<\/ul>\n<p data-start=\"1342\" data-end=\"1360\">is defined as.<\/p>\n<p data-start=\"1362\" data-end=\"1412\">After the sandblasting process, the surface is not completely smooth.<\/p>\n<p data-start=\"1414\" data-end=\"1545\">On the contrary, coating materials adhere mechanically to the surface thanks to the microscopic indentations and protrusions created in a controlled manner.<\/p>\n<p data-start=\"1547\" data-end=\"1620\">This structure essentially serves as an &#8220;anchor point&#8221; for cladding systems.<\/p>\n<hr data-start=\"1622\" data-end=\"1625\">\n<h2 data-section-id=\"yvzwz0\" data-start=\"1627\" data-end=\"1664\"><span class=\"ez-toc-section\" id=\"Why_Is_Surface_Roughness_Important\"><\/span>Why Is Surface Roughness Important?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"1666\" data-end=\"1746\">A chemical bond alone is not sufficient for a coating to adhere to a surface.<\/p>\n<p data-start=\"1748\" data-end=\"1833\">A profile must be created that allows the coating to physically adhere to the surface.<\/p>\n<p data-start=\"1835\" data-end=\"1859\">Correct surface roughness;<\/p>\n<p data-start=\"1861\" data-end=\"1889\">\u2714 Improves coating adhesion<\/p>\n<p data-start=\"1891\" data-end=\"1911\">\u2714 Extends the life of the paint<\/p>\n<p data-start=\"1913\" data-end=\"1943\">\u2714 Improves corrosion resistance<\/p>\n<p data-start=\"1945\" data-end=\"1970\">\u2714 Reduces the risk of peeling<\/p>\n<p data-start=\"1972\" data-end=\"2001\">\u2714 Reduces maintenance costs<\/p>\n<p data-start=\"2003\" data-end=\"2061\">An incorrect surface profile, on the other hand, can cause serious problems.<\/p>\n<hr data-start=\"2063\" data-end=\"2066\">\n<h2 data-section-id=\"aspo33\" data-start=\"2068\" data-end=\"2118\"><span class=\"ez-toc-section\" id=\"What_Kind_of_Problems_Does_Insufficient_Roughness_Cause\"><\/span>What Kind of Problems Does Insufficient Roughness Cause?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"2120\" data-end=\"2151\">When the surface is left too flat;<\/p>\n<ul data-start=\"2153\" data-end=\"2278\">\n<li data-section-id=\"s9h8a\" data-start=\"2153\" data-end=\"2179\">The paint doesn&#8217;t adhere well enough<\/li>\n<li data-section-id=\"1vheen8\" data-start=\"2180\" data-end=\"2209\">Premature peeling may occur<\/li>\n<li data-section-id=\"1rzf8dw\" data-start=\"2210\" data-end=\"2241\">Moisture penetration may accelerate<\/li>\n<li data-section-id=\"1op8w03\" data-start=\"2242\" data-end=\"2278\">The corrosion process may begin early<\/li>\n<\/ul>\n<p data-start=\"2280\" data-end=\"2377\">This situation can lead to significant costs, particularly in steel structures exposed to outdoor environmental conditions.<\/p>\n<hr data-start=\"2379\" data-end=\"2382\">\n<h2 data-section-id=\"6plhsx\" data-start=\"2384\" data-end=\"2421\"><span class=\"ez-toc-section\" id=\"Why_Is_Excessive_Roughness_Harmful\"><\/span>Why Is Excessive Roughness Harmful?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"2423\" data-end=\"2486\">Many people think that a higher roughness is better.<\/p>\n<p data-start=\"2488\" data-end=\"2506\">That is not true.<\/p>\n<p data-start=\"2508\" data-end=\"2533\">On extremely rough surfaces;<\/p>\n<ul data-start=\"2535\" data-end=\"2695\">\n<li data-section-id=\"a7hkt2\" data-start=\"2535\" data-end=\"2556\">Paint consumption increases<\/li>\n<li data-section-id=\"139dyjg\" data-start=\"2557\" data-end=\"2594\">It becomes more difficult to check the coating thickness<\/li>\n<li data-section-id=\"tqag93\" data-start=\"2595\" data-end=\"2641\">Early wear may occur at the peaks<\/li>\n<li data-section-id=\"sjhyzc\" data-start=\"2642\" data-end=\"2695\">Weak spots may develop in the coating system<\/li>\n<\/ul>\n<p data-start=\"2697\" data-end=\"2752\">For this reason, the goal is not maximum roughness, but optimal roughness.<\/p>\n<hr data-start=\"2754\" data-end=\"2757\">\n<div id=\"attachment_2730\" style=\"width: 1034px\" class=\"wp-caption alignleft\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-2730\" class=\"size-large wp-image-2730\" src=\"https:\/\/bfblast.com\/wp-content\/uploads\/2026\/08\/BF-Blast-Makale-Icerigi-1024x683.jpg\" alt=\"Surface roughness (surface profile) refers to the microscopic surface profile formed after the sandblasting process and has a direct impact on coating adhesion, corrosion resistance, and paint life.\" width=\"1024\" height=\"683\" title=\"\" srcset=\"https:\/\/bfblast.com\/wp-content\/uploads\/2026\/08\/BF-Blast-Makale-Icerigi-1024x683.jpg 1024w, https:\/\/bfblast.com\/wp-content\/uploads\/2026\/08\/BF-Blast-Makale-Icerigi-300x200.jpg 300w, https:\/\/bfblast.com\/wp-content\/uploads\/2026\/08\/BF-Blast-Makale-Icerigi-768x512.jpg 768w, https:\/\/bfblast.com\/wp-content\/uploads\/2026\/08\/BF-Blast-Makale-Icerigi-700x467.jpg 700w, https:\/\/bfblast.com\/wp-content\/uploads\/2026\/08\/BF-Blast-Makale-Icerigi.jpg 1536w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><p id=\"caption-attachment-2730\" class=\"wp-caption-text\">Measurement of Surface Roughness (Surface Profile) and Its Effect on Coating Performance<\/p><\/div>\n<h1 data-section-id=\"177e2f2\" data-start=\"2759\" data-end=\"2786\"><span class=\"ez-toc-section\" id=\"What_Are_Ra_and_Rz_Values\"><\/span>What Are Ra and Rz Values?<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p data-start=\"2788\" data-end=\"2854\">Surface roughness is generally expressed in terms of two basic parameters.<\/p>\n<h2 data-section-id=\"1y30bqw\" data-start=\"2856\" data-end=\"2881\"><span class=\"ez-toc-section\" id=\"Ra_Average_Roughness\"><\/span>Ra (Average Roughness)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"2883\" data-end=\"2948\">The Ra value represents the average height of surface irregularities.<\/p>\n<p data-start=\"2950\" data-end=\"2998\">It is the most commonly used surface measurement parameter.<\/p>\n<p data-start=\"3000\" data-end=\"3068\">It is most commonly used in precision manufacturing and quality control processes.<\/p>\n<hr data-start=\"3070\" data-end=\"3073\">\n<h2 data-section-id=\"1mpiuwg\" data-start=\"3075\" data-end=\"3105\"><span class=\"ez-toc-section\" id=\"Rz_Maximum_Height_Profile\"><\/span>Rz (Maximum Height Profile)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"3107\" data-end=\"3197\">The Rz value indicates the average difference between the highest peak and the deepest valley on the surface.<\/p>\n<p data-start=\"3199\" data-end=\"3261\">In the coating industry, it is often considered more critical than Ra.<\/p>\n<p data-start=\"3263\" data-end=\"3328\">Because it illustrates more clearly how the coating adheres to the surface.<\/p>\n<hr data-start=\"3330\" data-end=\"3333\">\n<h1 data-section-id=\"1etzct\" data-start=\"3335\" data-end=\"3381\"><span class=\"ez-toc-section\" id=\"How_Does_Sandblasting_Create_Surface_Roughness\"><\/span>How Does Sandblasting Create Surface Roughness?<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p data-start=\"3383\" data-end=\"3460\">During the sandblasting process, abrasives propelled at high speed strike the surface.<\/p>\n<p data-start=\"3462\" data-end=\"3482\">As a result of this collision:<\/p>\n<ul data-start=\"3484\" data-end=\"3545\">\n<li data-section-id=\"1xr0za3\" data-start=\"3484\" data-end=\"3500\">Micropits<\/li>\n<li data-section-id=\"s6i1r6\" data-start=\"3501\" data-end=\"3519\">Micro-protrusions<\/li>\n<li data-section-id=\"14z4fgz\" data-start=\"3520\" data-end=\"3545\">Controlled surface profile<\/li>\n<\/ul>\n<p data-start=\"3547\" data-end=\"3554\">is formed.<\/p>\n<p data-start=\"3556\" data-end=\"3570\">The resulting profile:<\/p>\n<ul data-start=\"3572\" data-end=\"3658\">\n<li data-section-id=\"1bcrgfq\" data-start=\"3572\" data-end=\"3597\">Depending on the abrasive used<\/li>\n<li data-section-id=\"1ve4bfd\" data-start=\"3598\" data-end=\"3613\">Particle size<\/li>\n<li data-section-id=\"v6u2th\" data-start=\"3614\" data-end=\"3623\">Under Pressure<\/li>\n<li data-section-id=\"1cyulia\" data-start=\"3624\" data-end=\"3638\">Nozzle diameter<\/li>\n<li data-section-id=\"fwjx9p\" data-start=\"3639\" data-end=\"3658\">Surface material<\/li>\n<\/ul>\n<p data-start=\"3660\" data-end=\"3673\">It depends.<\/p>\n<hr data-start=\"3675\" data-end=\"3678\">\n<h1 data-section-id=\"1ku3gwu\" data-start=\"3680\" data-end=\"3726\"><span class=\"ez-toc-section\" id=\"Which_Abrasive_Creates_What_Kind_of_Profile\"><\/span><a href=\"https:\/\/bfblast.com\/en\/guide-to-sandblasting-abrasives-4-different-types-which-abrasive-should-be-used-for-which-surface\/\">Which Abrasive<\/a> Creates What Kind of Profile?<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<h2 data-section-id=\"de8xwh\" data-start=\"3728\" data-end=\"3741\"><span class=\"ez-toc-section\" id=\"Steel_Grit\"><\/span>Steel Grit<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"3743\" data-end=\"3815\">Thanks to its sharp-edged design, it creates a more aggressive surface profile.<\/p>\n<p data-start=\"3817\" data-end=\"3841\">Areas of interest:<\/p>\n<ul data-start=\"3843\" data-end=\"3890\">\n<li data-section-id=\"13mucjc\" data-start=\"3843\" data-end=\"3856\">Heavy industry<\/li>\n<li data-section-id=\"1k0syfi\" data-start=\"3857\" data-end=\"3878\">Steel structure<\/li>\n<li data-section-id=\"1sf3aqf\" data-start=\"3879\" data-end=\"3890\">Shipbuilding<\/li>\n<\/ul>\n<hr data-start=\"3892\" data-end=\"3895\">\n<h2 data-section-id=\"12ezflj\" data-start=\"3897\" data-end=\"3918\"><span class=\"ez-toc-section\" id=\"Steel_Shot\"><\/span>Steel Shot<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"3920\" data-end=\"3951\">It creates a rounder profile.<\/p>\n<p data-start=\"3953\" data-end=\"3977\">Areas of interest:<\/p>\n<ul data-start=\"3979\" data-end=\"4030\">\n<li data-section-id=\"1q5d706\" data-start=\"3979\" data-end=\"3993\">Shot peening<\/li>\n<li data-section-id=\"nzggem\" data-start=\"3994\" data-end=\"4011\">Castings Cleaning<\/li>\n<li data-section-id=\"jcrtlw\" data-start=\"4012\" data-end=\"4030\">Automotive industry<\/li>\n<\/ul>\n<hr data-start=\"4032\" data-end=\"4035\">\n<h2 data-section-id=\"w79mku\" data-start=\"4037\" data-end=\"4046\"><span class=\"ez-toc-section\" id=\"Garnet\"><\/span>Garnet<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"4048\" data-end=\"4094\">It ensures controlled and uniform surface roughness.<\/p>\n<p data-start=\"4096\" data-end=\"4120\">Areas of interest:<\/p>\n<ul data-start=\"4122\" data-end=\"4176\">\n<li data-section-id=\"1vycgs5\" data-start=\"4122\" data-end=\"4136\">Tank manufacturing<\/li>\n<li data-section-id=\"1t0whm9\" data-start=\"4137\" data-end=\"4151\">Pipelines<\/li>\n<li data-section-id=\"1f4dm9f\" data-start=\"4152\" data-end=\"4176\">Precise surface preparation<\/li>\n<\/ul>\n<hr data-start=\"4178\" data-end=\"4181\">\n<h2 data-section-id=\"wh87ud\" data-start=\"4183\" data-end=\"4201\"><span class=\"ez-toc-section\" id=\"Aluminum_Oxide\"><\/span>Aluminum Oxide<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"4203\" data-end=\"4263\">Thanks to its high hardness, it can create a deep surface profile.<\/p>\n<p data-start=\"4265\" data-end=\"4316\">It is particularly preferred in heavy-duty coating systems.<\/p>\n<hr data-start=\"4318\" data-end=\"4321\">\n<h1 data-section-id=\"1s8fh6h\" data-start=\"4323\" data-end=\"4370\"><span class=\"ez-toc-section\" id=\"What_Should_the_Ideal_Surface_Roughness_Be_in_Microns\"><\/span>What Should the Ideal Surface Roughness Be in Microns?<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p data-start=\"4372\" data-end=\"4405\">There is no single answer to this question.<\/p>\n<p data-start=\"4407\" data-end=\"4419\">Ideal value;<\/p>\n<ul data-start=\"4421\" data-end=\"4502\">\n<li data-section-id=\"1ih5lb9\" data-start=\"4421\" data-end=\"4448\">Paint system to be used<\/li>\n<li data-section-id=\"d80y61\" data-start=\"4449\" data-end=\"4468\">Coating thickness<\/li>\n<li data-section-id=\"19h91m4\" data-start=\"4469\" data-end=\"4487\">Terms of Service<\/li>\n<li data-section-id=\"1k7rkl7\" data-start=\"4488\" data-end=\"4502\">Material type<\/li>\n<\/ul>\n<p data-start=\"4504\" data-end=\"4532\">depends on parameters such as&#8230;<\/p>\n<p data-start=\"4534\" data-end=\"4575\">However, in industrial applications, it is often the case that:<\/p>\n<p data-start=\"4577\" data-end=\"4622\"><strong data-start=\"4577\" data-end=\"4622\">Surface profiles in the 40\u2013100-micron range<\/strong><\/p>\n<p data-start=\"4624\" data-end=\"4635\">is targeted.<\/p>\n<p data-start=\"4637\" data-end=\"4723\">A higher profile may be preferred, particularly for heavy-duty protective coatings.<\/p>\n<hr data-start=\"4725\" data-end=\"4728\">\n<h1 data-section-id=\"115ccg3\" data-start=\"4730\" data-end=\"4764\"><span class=\"ez-toc-section\" id=\"How_Is_Surface_Roughness_Measured\"><\/span>How Is Surface Roughness Measured?<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p data-start=\"4766\" data-end=\"4821\">In modern facilities, surface profile is measured using the following methods:<\/p>\n<h3 data-section-id=\"16z3yss\" data-start=\"4823\" data-end=\"4839\"><span class=\"ez-toc-section\" id=\"Profile_Meter\"><\/span>Profile Meter<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"4841\" data-end=\"4883\">These are precision instruments that provide digital measurements.<\/p>\n<h3 data-section-id=\"1s4ejhp\" data-start=\"4885\" data-end=\"4908\"><span class=\"ez-toc-section\" id=\"Testex_Replica_Tape\"><\/span>Testex Replica Tape<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"4910\" data-end=\"4971\">It is one of the most commonly used methods in the sandblasting industry.<\/p>\n<h3 data-section-id=\"1grkzhv\" data-start=\"4973\" data-end=\"5011\"><span class=\"ez-toc-section\" id=\"Surface_Comparison_Comparators\"><\/span>Surface Comparison Comparators<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"5013\" data-end=\"5053\">It is preferred for quick on-site inspections.<\/p>\n<hr data-start=\"5055\" data-end=\"5058\">\n<h1 data-section-id=\"19qjq82\" data-start=\"5060\" data-end=\"5096\"><span class=\"ez-toc-section\" id=\"The_Relationship_Between_Surface_Profile_and_Sa_25\"><\/span><a href=\"https:\/\/bfblast.com\/en\/what-is-the-sandblasting-standard-for-steel-structures-why-is-sa-2-5-so-important\/\">The Relationship Between Surface Profile and Sa 2.5<\/a><span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p data-start=\"5098\" data-end=\"5169\">A common mistake is to assume that a Sa 2.5 cleaning is sufficient.<\/p>\n<p data-start=\"5171\" data-end=\"5176\">However:<\/p>\n<p data-start=\"5178\" data-end=\"5218\"><strong data-start=\"5178\" data-end=\"5218\">Sa defines cleaning level 2.5.<\/strong><\/p>\n<p data-start=\"5220\" data-end=\"5273\"><strong data-start=\"5220\" data-end=\"5273\">Surface Profile, on the other hand, defines surface roughness.<\/strong><\/p>\n<p data-start=\"5275\" data-end=\"5371\">A surface may have been cleaned to Sa 2.5, but it may not have the appropriate surface profile.<\/p>\n<p data-start=\"5373\" data-end=\"5450\">Both criteria must be met to ensure true coating performance.<\/p>\n<hr data-start=\"5452\" data-end=\"5455\">\n<h1 data-section-id=\"iwtra\" data-start=\"5457\" data-end=\"5464\"><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p data-start=\"5466\" data-end=\"5540\">One of the most critical factors determining the service life of a coating is surface roughness.<\/p>\n<p data-start=\"5542\" data-end=\"5581\">A properly created surface profile:<\/p>\n<p data-start=\"5583\" data-end=\"5733\">\u2714 Provides stronger adhesion<br data-start=\"5610\" data-end=\"5613\"\/>\u2714 Increases corrosion resistance<br data-start=\"5641\" data-end=\"5644\"\/>\u2714 Optimizes paint consumption<br data-start=\"5675\" data-end=\"5678\"\/>\u2714 Extends coating life<br data-start=\"5701\" data-end=\"5704\"\/>\u2714 Reduces maintenance costs<\/p>\n<p data-start=\"5735\" data-end=\"5841\">For this reason, in sandblasting processes, it is necessary to focus not only on the level of cleanliness but also on the surface profile.<\/p>\n<hr data-start=\"5843\" data-end=\"5846\">\n<h1 data-section-id=\"4ukz8w\" data-start=\"5848\" data-end=\"5899\"><span class=\"ez-toc-section\" id=\"Take_Control_of_Surface_Quality_with_BF_BLAST\"><\/span>Take Control of Surface Quality with <a href=\"https:\/\/www.linkedin.com\/company\/bf-blast\/?lipi=urn%3Ali%3Apage%3Ad_flagship3_company%3BaZwMulzaSWOkFo3K8mVnbA%3D%3D\" target=\"_blank\" rel=\"noopener\">BF BLAST<\/a> <span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p data-start=\"5901\" data-end=\"5957\">Each coating system requires a different surface profile.<\/p>\n<p data-start=\"5959\" data-end=\"6070\">The wrong abrasive, the wrong pressure, or incorrect process settings can lead to costly coating defects.<\/p>\n<p data-start=\"6072\" data-end=\"6230\">At BF BLAST, we not only manufacture sandblasting equipment, but we also provide technical consulting services aimed at optimizing surface preparation processes.<\/p>\n<p data-start=\"6232\" data-end=\"6366\">Let\u2019s work together to determine the surface roughness values your project requires and maximize your coating performance.<\/p>\n<p data-start=\"6368\" data-end=\"6466\">\ud83d\udccd Ostim OSB, 1247th St., No. 9, Yenimahalle \/ Ankara<br data-start=\"6418\" data-end=\"6421\"\/>\ud83d\udcde +90 312 395 25 50<br data-start=\"6441\" data-end=\"6444\"\/>\ud83c\udf10 <a class=\"decorated-link\" href=\"https:\/\/bfblast.com\/en\/\" target=\"_new\" rel=\"noopener\" data-start=\"6447\" data-end=\"6466\">https:\/\/bfblast.com<\/a>  <\/p>\n<hr data-start=\"6468\" data-end=\"6471\">\n<h3 data-section-id=\"zqr7vz\" data-start=\"6473\" data-end=\"6491\"><span class=\"ez-toc-section\" id=\"Tags\"><\/span>Tags<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"6493\" data-end=\"6845\" data-is-last-node=\"\" data-is-only-node=\"\">surface roughness, surface profile, surface roughness, anchor profile, what is Ra, what is Rz, surface roughness measurement, surface profile after sandblasting, what is SA 2.5, steel grit, steel shot, garnet blasting, aluminum oxide, coating adhesion, surface preparation, industrial blasting, shot blasting, sand blasting, corrosion protection, pre-paint surface preparation<\/p>\n","protected":false},"excerpt":{"rendered":"<p>What is surface roughness (surface profile)? How are Ra and Rz values measured? Why is the ideal surface profile important after sandblasting? A detailed guide. What Is Surface Profile? If you believe that the most important factor determining the success of a paint or coating system is the quality of the paint, you\u2019re not alone. [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":2740,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[283,19],"tags":[292,287,251,240,285,233,243,237,245,244,284,247,250,291,286,241,290,239,288,289],"class_list":["post-2741","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-surface-preparation","category-uncategorized","tag-aluminum-oxide","tag-anchor-profile","tag-coating-adhesion","tag-corrosion-protection","tag-garnet-blasting","tag-industrial-sandblasting","tag-sandblasting","tag-shot-blasting","tag-steel-ball","tag-steel-grit","tag-surface-preparation-2","tag-surface-preparation-before-painting","tag-surface-profile","tag-surface-profile-after-sandblasting","tag-surface-roughness-2","tag-surface-roughness","tag-surface-roughness-measurement","tag-what-is-2-5-sa","tag-what-is-ra","tag-what-is-rz"],"acf":[],"_links":{"self":[{"href":"https:\/\/bfblast.com\/en\/wp-json\/wp\/v2\/posts\/2741","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bfblast.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bfblast.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bfblast.com\/en\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/bfblast.com\/en\/wp-json\/wp\/v2\/comments?post=2741"}],"version-history":[{"count":0,"href":"https:\/\/bfblast.com\/en\/wp-json\/wp\/v2\/posts\/2741\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/bfblast.com\/en\/wp-json\/wp\/v2\/media\/2740"}],"wp:attachment":[{"href":"https:\/\/bfblast.com\/en\/wp-json\/wp\/v2\/media?parent=2741"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bfblast.com\/en\/wp-json\/wp\/v2\/categories?post=2741"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bfblast.com\/en\/wp-json\/wp\/v2\/tags?post=2741"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}