{"id":6059,"date":"2026-08-28T05:42:30","date_gmt":"2026-08-28T05:42:30","guid":{"rendered":"https:\/\/ceshi.baoxuanmetal.com\/?p=6059"},"modified":"2026-09-12T02:47:19","modified_gmt":"2026-09-12T02:47:19","slug":"matte-finish-metal","status":"publish","type":"post","link":"https:\/\/ceshi.baoxuanmetal.com\/de\/matte-finish-metal\/","title":{"rendered":"Matte Finish"},"content":{"rendered":"<p class=\"isSelectedEnd\">You have added <strong>\u201cmatte finish\u201d<\/strong> to a drawing callout. The supplier responds asking for a surface roughness value. Now you need to decide: <strong>what Ra range actually qualifies as matte, and which manufacturing process will get you there?<\/strong><\/p>\n<p class=\"isSelectedEnd\">Matte finish describes a surface with <strong>low specular reflectivity \u2014 light scatters broadly rather than bouncing back at a single angle.<\/strong> Unlike a mirror-polished or high-gloss surface, a matte surface diffuses light, producing a uniform, non-reflective appearance. The term is widely understood in manufacturing, but <strong>it is not self-specifying. Without a measurable parameter like surface roughness (Ra) or gloss units (GU), \u201cmatte finish\u201d leaves too much room for interpretation.<\/strong><\/p>\n<h2>What Is a Matte Finish?<\/h2>\n<p class=\"isSelectedEnd\">A matte finish is any surface treatment that <strong>reduces specular reflection to a low, even level.<\/strong> The surface micro-roughness is sufficient to scatter incident light across a wide angle rather than reflecting it back toward the viewer. This is what gives matte surfaces their characteristic soft, flat appearance.<\/p>\n<h3>Gloss Levels and Where Matte Falls<\/h3>\n<p class=\"isSelectedEnd\"><a href=\"https:\/\/ceshi.baoxuanmetal.com\/de\/surface-finish\/\"><strong data-start=\"554\" data-end=\"586\">Sheet metal surface finishes<\/strong><\/a> are often described along a gloss continuum. At one end, a high-gloss surface reflects light sharply \u2014 think polished stainless steel or chrome plating. At the other end, a flat or matte surface absorbs and scatters nearly all incident light. Industry convention generally breaks the continuum into these categories:<\/p>\n<ul data-spread=\"false\">\n<li><strong>High gloss: &gt;70 GU at 60\u00b0<\/strong> \u2014 mirror-like reflection<\/li>\n<li><strong>Semi-gloss: 35\u201370 GU at 60\u00b0<\/strong> \u2014 noticeable reflection, softened edges<\/li>\n<li><strong>Satin: 15\u201335 GU at 60\u00b0<\/strong> \u2014 slight sheen, diffused reflection<\/li>\n<li><strong>Matte: &lt;10 GU at 60\u00b0<\/strong> \u2014 minimal to no visible reflection<\/li>\n<li><strong>Flat: &lt;5 GU at 60\u00b0<\/strong> \u2014 virtually no reflection<\/li>\n<\/ul>\n<p class=\"isSelectedEnd\">Gloss units are measured with a glossmeter at a standard angle (typically 60\u00b0). The threshold between \u201csatin\u201d and \u201cmatte\u201d varies by industry and application, but <strong>a surface below 10 GU at 60\u00b0 is generally recognized as matte.<\/strong><\/p>\n<h2>Matte vs. Satin vs. Glossy: What\u2019s the Difference?<\/h2>\n<p class=\"isSelectedEnd\">The three terms describe points on the same spectrum \u2014 <strong>they differ in how much light the surface reflects back toward the source.<\/strong><\/p>\n<div id=\"attachment_6061\" style=\"width: 610px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" aria-describedby=\"caption-attachment-6061\" class=\"wp-image-6061 size-fusion-600\" src=\"https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/matte-vs-satin-vs-glossy-metal-finish-600x350.webp\" alt=\"Comparison of matte satin and glossy metal finishes on the same part\" width=\"600\" height=\"350\" srcset=\"https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/matte-vs-satin-vs-glossy-metal-finish-200x117.webp 200w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/matte-vs-satin-vs-glossy-metal-finish-300x175.webp 300w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/matte-vs-satin-vs-glossy-metal-finish-400x233.webp 400w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/matte-vs-satin-vs-glossy-metal-finish-500x292.webp 500w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/matte-vs-satin-vs-glossy-metal-finish-600x350.webp 600w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/matte-vs-satin-vs-glossy-metal-finish-700x408.webp 700w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/matte-vs-satin-vs-glossy-metal-finish-768x448.webp 768w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/matte-vs-satin-vs-glossy-metal-finish-800x467.webp 800w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/matte-vs-satin-vs-glossy-metal-finish-1024x597.webp 1024w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/matte-vs-satin-vs-glossy-metal-finish-1200x700.webp 1200w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/matte-vs-satin-vs-glossy-metal-finish-1536x896.webp 1536w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/matte-vs-satin-vs-glossy-metal-finish.webp 1642w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><p id=\"caption-attachment-6061\" class=\"wp-caption-text\"><span style=\"color: #808080;\">A side-by-side comparison of matte, satin, and glossy finishes showing how surface reflectivity changes visual appearance.<\/span><\/p><\/div>\n<p class=\"isSelectedEnd\">A <strong>glossy<\/strong> surface is smooth and highly reflective. Surface roughness is very low (<strong>typically Ra &lt; 0.4 \u03bcm<\/strong>), and the reflection is specular \u2014 you can see a clear image in the surface. Glossy finishes are common on decorative trim, consumer electronics housings, and polished machined parts.<\/p>\n<p class=\"isSelectedEnd\">A <strong>satin<\/strong> surface sits between glossy and matte. It has a visible sheen but the reflection is softened and diffused. Satin finishes are often achieved through light bead brushing, light chemical etching, or satin anodizing. <strong>Surface roughness typically falls in the Ra 0.4\u20131.6 \u03bcm range.<\/strong><\/p>\n<p class=\"isSelectedEnd\">A <strong>matte<\/strong> surface has minimal specular reflection. The surface texture is rough enough to scatter light broadly, producing a flat, uniform appearance with no visible image reflection. Matte finishes are achieved through <strong>bead blasting, matte powder coating, matte anodizing, or chemical etching.<\/strong><\/p>\n<h3>Gloss Units and Visual Appearance<\/h3>\n<\/p>\n<div class=\"table-2\">\n<table width=\"100%\">\n<thead>\n<tr>\n<th align=\"left\">Finish<\/th>\n<th align=\"left\">Gloss Units (60\u00b0)<\/th>\n<th align=\"left\">Visual Appearance<\/th>\n<th align=\"left\">Typical Ra Range<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td align=\"left\">High gloss<\/td>\n<td align=\"left\">&gt;70 GU<\/td>\n<td align=\"left\">Mirror-like, sharp reflection<\/td>\n<td align=\"left\">&lt; 0.4 \u03bcm<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">Semi-gloss<\/td>\n<td align=\"left\">35\u201370 GU<\/td>\n<td align=\"left\">Noticeable reflection, softened<\/td>\n<td align=\"left\">0.4\u20131.0 \u03bcm<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">Satin<\/td>\n<td align=\"left\">15\u201335 GU<\/td>\n<td align=\"left\">Soft sheen, diffused light<\/td>\n<td align=\"left\">0.4\u20131.6 \u03bcm<\/td>\n<\/tr>\n<tr>\n<td align=\"left\"><strong>Matte<\/strong><\/td>\n<td align=\"left\"><strong>&lt;10 GU<\/strong><\/td>\n<td align=\"left\"><strong>Flat, no visible reflection<\/strong><\/td>\n<td align=\"left\"><strong>1.6\u20136.3 \u03bcm<\/strong><\/td>\n<\/tr>\n<tr>\n<td align=\"left\">Flat<\/td>\n<td align=\"left\">&lt;5 GU<\/td>\n<td align=\"left\">Dead flat, absorbs light<\/td>\n<td align=\"left\">&gt; 6.3 \u03bcm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>\n<p class=\"isSelectedEnd\"><strong data-start=\"1624\" data-end=\"1690\">Keep in mind that gloss units and Ra measure different things.<\/strong> Gloss units quantify optical reflectivity; <a href=\"https:\/\/ceshi.baoxuanmetal.com\/de\/surface-roughness\/\"><strong data-start=\"1734\" data-end=\"1760\">surface roughness (Ra)<\/strong><\/a> quantifies the average height variation of the surface profile. <strong data-start=\"1825\" data-end=\"1919\">A surface can have the same Ra but different gloss levels depending on the texture pattern<\/strong> \u2014 a directional brushed surface at Ra 1.6 \u03bcm will look different from a blasted surface at the same Ra.<\/p>\n<div id=\"attachment_6062\" style=\"width: 610px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" aria-describedby=\"caption-attachment-6062\" class=\"wp-image-6062 size-fusion-600\" src=\"https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/matte-finish-gloss-units-ra-reference-600x350.webp\" alt=\"Matte finish reference chart for gloss units and surface roughness Ra\" width=\"600\" height=\"350\" srcset=\"https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/matte-finish-gloss-units-ra-reference-200x117.webp 200w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/matte-finish-gloss-units-ra-reference-300x175.webp 300w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/matte-finish-gloss-units-ra-reference-400x233.webp 400w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/matte-finish-gloss-units-ra-reference-500x292.webp 500w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/matte-finish-gloss-units-ra-reference-600x350.webp 600w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/matte-finish-gloss-units-ra-reference-700x408.webp 700w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/matte-finish-gloss-units-ra-reference-768x448.webp 768w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/matte-finish-gloss-units-ra-reference-800x467.webp 800w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/matte-finish-gloss-units-ra-reference-1024x597.webp 1024w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/matte-finish-gloss-units-ra-reference-1200x700.webp 1200w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/matte-finish-gloss-units-ra-reference-1536x896.webp 1536w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/matte-finish-gloss-units-ra-reference.webp 1642w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><p id=\"caption-attachment-6062\" class=\"wp-caption-text\"><span style=\"color: #808080;\">A technical reference showing how gloss units and Ra ranges relate to glossy, satin, and matte metal finishes.<\/span><\/p><\/div>\n<h2>What Ra Value Corresponds to a Matte Finish?<\/h2>\n<p class=\"isSelectedEnd\"><strong>There is no single Ra value that defines \u201cmatte.\u201d<\/strong> The relationship between Ra and visual appearance depends on the manufacturing process, material, and surface texture pattern. However, most matte surfaces produced through common manufacturing processes fall within a predictable range.<\/p>\n<p class=\"isSelectedEnd\">As a general reference:<\/p>\n<ul data-spread=\"false\">\n<li><strong>Bead-blasted matte: Ra 1.6\u20136.3 \u03bcm<\/strong> \u2014 the most common matte finish on sheet metal and machined parts<\/li>\n<li><strong>Matte powder coating: Ra 1.6\u20133.2 \u03bcm<\/strong> (surface profile of the cured coating)<\/li>\n<li><strong>Matte anodizing: Ra 0.8\u20133.2 \u03bcm<\/strong> (depends on the pre-treatment etch)<\/li>\n<li><strong>Chemical matte etch: Ra 0.8\u20131.6 \u03bcm<\/strong> \u2014 finer matte, often on aluminum<\/li>\n<\/ul>\n<p class=\"isSelectedEnd\">These ranges are approximate. A blasted surface at Ra 3.2 \u03bcm on stainless steel will appear more matte than the same Ra value on aluminum, because the material\u2019s reflectivity affects the perceived gloss. <strong>For critical applications, specify both the Ra value and the gloss unit requirement to eliminate ambiguity.<\/strong><\/p>\n<h2>How to Achieve Matte Finish on Sheet Metal and Machined Parts<\/h2>\n<p class=\"isSelectedEnd\">The manufacturing process you choose affects the <strong>surface texture, appearance consistency, cost, and material compatibility.<\/strong> Here are the four most common methods for producing a matte finish on metal parts.<\/p>\n<div id=\"attachment_6063\" style=\"width: 610px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" aria-describedby=\"caption-attachment-6063\" class=\"wp-image-6063 size-fusion-600\" src=\"https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/how-to-achieve-matte-finish-on-metal-600x350.webp\" alt=\"Common manufacturing methods used to achieve a matte finish on metal parts\" width=\"600\" height=\"350\" srcset=\"https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/how-to-achieve-matte-finish-on-metal-200x117.webp 200w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/how-to-achieve-matte-finish-on-metal-300x175.webp 300w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/how-to-achieve-matte-finish-on-metal-400x233.webp 400w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/how-to-achieve-matte-finish-on-metal-500x292.webp 500w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/how-to-achieve-matte-finish-on-metal-600x350.webp 600w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/how-to-achieve-matte-finish-on-metal-700x408.webp 700w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/how-to-achieve-matte-finish-on-metal-768x448.webp 768w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/how-to-achieve-matte-finish-on-metal-800x467.webp 800w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/how-to-achieve-matte-finish-on-metal-1024x597.webp 1024w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/how-to-achieve-matte-finish-on-metal-1200x700.webp 1200w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/how-to-achieve-matte-finish-on-metal-1536x896.webp 1536w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/how-to-achieve-matte-finish-on-metal.webp 1642w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><p id=\"caption-attachment-6063\" class=\"wp-caption-text\"><span style=\"color: #808080;\">A comparison of bead blasting, matte powder coating, anodizing, and chemical etching used to create matte finishes on metal parts.<\/span><\/p><\/div>\n<h3>Bead Blasting<\/h3>\n<p class=\"isSelectedEnd\">Bead blasting (also called sandblasting or abrasive blasting) propels fine media \u2014 glass beads, aluminum oxide, or ceramic particles \u2014 at the surface under compressed air. <strong>The impact creates a uniform dimpled texture that scatters light.<\/strong><\/p>\n<ul data-spread=\"false\">\n<li><strong>Typical Ra:<\/strong> 1.6\u20136.3 \u03bcm, adjustable by media size and pressure<\/li>\n<li><strong>Materials:<\/strong> Nearly all metals \u2014 steel, stainless steel, aluminum, titanium, copper<\/li>\n<li><strong>Advantages:<\/strong> Fast, cost-effective, produces a consistent matte appearance across complex geometries<\/li>\n<li><strong>Limitations:<\/strong> Does not add a protective coating; the bare metal surface remains exposed and may require a sealant or additional coating for corrosion protection. Blasting can also slightly reduce dimensional accuracy on tight-tolerance features.<\/li>\n<\/ul>\n<h3>Powder Coating (Matte Formulation)<\/h3>\n<p class=\"isSelectedEnd\"><a href=\"https:\/\/ceshi.baoxuanmetal.com\/de\/sheet-metal-finishing-services\/powder-coating-services\/\"><strong data-start=\"2624\" data-end=\"2648\">Matte powder coating<\/strong><\/a> applies a dry polymer powder to the surface electrostatically, then cures it in an oven. <strong data-start=\"2738\" data-end=\"2864\">Matte powder formulations contain texturing agents that produce a low-gloss finish without additional surface preparation.<\/strong><\/p>\n<ul data-spread=\"false\">\n<li><strong>Typical Ra:<\/strong> 1.6\u20133.2 \u03bcm (coating surface profile)<\/li>\n<li><strong>Materials:<\/strong> Steel, stainless steel, aluminum \u2014 any substrate that can withstand curing temperature (typically 160\u2013200\u00b0C)<\/li>\n<li><strong>Advantages:<\/strong> Combines matte appearance with corrosion protection and abrasion resistance in a single step. Wide color selection.<\/li>\n<li><strong>Limitations:<\/strong> Adds a coating thickness of <strong>60\u2013120 \u03bcm<\/strong>, which affects dimensional tolerances. Not suitable for parts with tight assembly fits. Edges and weld seams may show coating inconsistencies.<\/li>\n<\/ul>\n<h3>Anodizing (Matte \/ Satin Anodize)<\/h3>\n<p class=\"isSelectedEnd\">The <a href=\"https:\/\/ceshi.baoxuanmetal.com\/de\/sheet-metal-finishing-services\/metal-anodizing-services\/\"><strong data-start=\"3567\" data-end=\"3594\">matte anodizing process<\/strong><\/a> grows a controlled oxide layer on aluminum through an electrochemical process. A matte finish is achieved by etching the surface before or during anodizing \u2014 either through chemical etching (alkaline bath) or by adjusting the anodizing parameters.<\/p>\n<ul data-spread=\"false\">\n<li><strong>Typical Ra:<\/strong> 0.8\u20133.2 \u03bcm, depending on etch duration and alloy<\/li>\n<li><strong>Materials:<\/strong> Aluminum alloys only (6061, 5052, 7075, etc.)<\/li>\n<li><strong>Advantages:<\/strong> Hard, wear-resistant surface; excellent corrosion protection; maintains dimensional accuracy better than powder coating because the oxide layer is thinner (<strong>5\u201325 \u03bcm for Type II<\/strong>)<\/li>\n<li><strong>Limitations:<\/strong> Aluminum only. Color consistency can vary between alloy batches and heat treatment states. Matte anodizing on 7075 may produce a different visual result than on 6061.<\/li>\n<\/ul>\n<h3>Chemical Etching \/ Conversion Coating<\/h3>\n<p class=\"isSelectedEnd\">Chemical etching uses acidic or alkaline solutions to selectively dissolve the surface, creating a micro-rough texture. Conversion coatings (such as chromate or phosphate) can also produce a matte appearance while adding corrosion resistance.<\/p>\n<ul data-spread=\"false\">\n<li><strong>Typical Ra:<\/strong> 0.8\u20131.6 \u03bcm<\/li>\n<li><strong>Materials:<\/strong> Aluminum, steel, zinc alloys<\/li>\n<li><strong>Advantages:<\/strong> Can be applied to complex geometries without mechanical contact. Good for parts that cannot tolerate blasting forces (thin walls, delicate features).<\/li>\n<li><strong>Limitations:<\/strong> Chemical process requires waste treatment and environmental compliance. The matte effect is subtle \u2014 more of a satin-to-matte range \u2014 and less uniform than blasting on large flat surfaces.<\/li>\n<\/ul>\n<h2>How to Specify Matte Finish on Engineering Drawings<\/h2>\n<p class=\"isSelectedEnd\"><strong>A drawing callout that says only \u201cmatte finish\u201d is ambiguous.<\/strong> Different suppliers may interpret it differently, leading to inconsistent parts or delays from clarification requests. <strong>Specify matte finish using measurable parameters.<\/strong><\/p>\n<div id=\"attachment_6064\" style=\"width: 610px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" aria-describedby=\"caption-attachment-6064\" class=\"wp-image-6064 size-fusion-600\" src=\"https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/matte-finish-engineering-drawing-callout-600x350.webp\" alt=\"Engineering drawing callout for matte finish with Ra and gloss unit requirements\" width=\"600\" height=\"350\" srcset=\"https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/matte-finish-engineering-drawing-callout-200x117.webp 200w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/matte-finish-engineering-drawing-callout-300x175.webp 300w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/matte-finish-engineering-drawing-callout-400x234.webp 400w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/matte-finish-engineering-drawing-callout-500x292.webp 500w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/matte-finish-engineering-drawing-callout-600x350.webp 600w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/matte-finish-engineering-drawing-callout-700x409.webp 700w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/matte-finish-engineering-drawing-callout-768x448.webp 768w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/matte-finish-engineering-drawing-callout-800x467.webp 800w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/matte-finish-engineering-drawing-callout-1024x598.webp 1024w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/matte-finish-engineering-drawing-callout-1200x701.webp 1200w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/matte-finish-engineering-drawing-callout-1536x897.webp 1536w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/matte-finish-engineering-drawing-callout.webp 1641w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><p id=\"caption-attachment-6064\" class=\"wp-caption-text\"><span style=\"color: #808080;\">An engineering drawing showing how to specify a matte finish using Ra and gloss unit requirements.<\/span><\/p><\/div>\n<h3>Using Ra Values<\/h3>\n<p class=\"isSelectedEnd\">The most precise approach is to call out the surface roughness directly:<\/p>\n<ul data-spread=\"false\">\n<li><strong>Format:<\/strong> Ra X.X \u03bcm (or Ra X \u03bcin) with a surface roughness symbol per ISO 1302 or ASME Y14.36<\/li>\n<li><strong>Example:<\/strong> Ra 3.2 \u03bcm (\u221a symbol) on all exterior surfaces<\/li>\n<li><strong>Why it works:<\/strong> Ra is a universally understood parameter. Any qualified manufacturer can measure and verify it.<\/li>\n<\/ul>\n<p class=\"isSelectedEnd\">However, <strong>Ra alone does not fully describe a matte appearance.<\/strong> Two surfaces with the same Ra can look different if the texture patterns differ (directional vs. isotropic).<\/p>\n<h3>Using Gloss Units<\/h3>\n<p class=\"isSelectedEnd\">For appearance-critical parts, define <a href=\"https:\/\/ceshi.baoxuanmetal.com\/de\/manufacturing-acceptance-criteria\/\"><strong data-start=\"4442\" data-end=\"4476\">measurable acceptance criteria<\/strong><\/a> by adding a gloss unit requirement alongside the Ra value:<\/p>\n<ul data-spread=\"false\">\n<li><strong>Format:<\/strong> <strong>\u201cMatte finish \u2014 Ra 1.6\u20133.2 \u03bcm, gloss &lt; 10 GU at 60\u00b0\u201d<\/strong><\/li>\n<li><strong>Why it works:<\/strong> This defines both the surface texture and the optical result. It prevents the case where a surface meets the Ra spec but does not look matte.<\/li>\n<\/ul>\n<h3>Common Annotation Mistakes<\/h3>\n<ul data-spread=\"false\">\n<li><strong>Specifying only \u201cmatte finish\u201d with no Ra or GU value<\/strong> \u2014 leaves the interpretation to the supplier<\/li>\n<li><strong>Specifying a very tight Ra range (e.g., Ra 1.6 \u00b1 0.2 \u03bcm)<\/strong> \u2014 may not be achievable with all matte processes, especially bead blasting<\/li>\n<li><strong>Not specifying the measurement location<\/strong> \u2014 Ra can vary across a part, especially near edges, welds, or formed areas<\/li>\n<li><strong>Confusing matte with satin<\/strong> \u2014 if you want no visible sheen, specify Ra &gt; 1.6 \u03bcm and &lt; 10 GU; if a slight sheen is acceptable, specify Ra 0.8\u20131.6 \u03bcm<\/li>\n<\/ul>\n<h2>When Should You Choose a Matte Finish?<\/h2>\n<p class=\"isSelectedEnd\">Matte finishes are a practical choice when the part needs to <strong>reduce glare, hide surface imperfections, or improve coating adhesion.<\/strong> Common applications include:<\/p>\n<ul data-spread=\"false\">\n<li><strong>Enclosures and housings<\/strong> \u2014 reduces glare in lighting-sensitive environments (medical devices, industrial control panels, military equipment)<\/li>\n<li><strong>Outdoor equipment<\/strong> \u2014 matte surfaces show fewer water spots and fingerprints than glossy surfaces<\/li>\n<li><strong>Parts that will be painted or powder coated<\/strong> \u2014 a matte base surface improves mechanical adhesion of subsequent coatings<\/li>\n<li><strong>Consumer-facing products<\/strong> \u2014 matte finishes convey a premium, understated aesthetic common in electronics, appliances, and automotive trim<\/li>\n<\/ul>\n<div id=\"attachment_6065\" style=\"width: 610px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" aria-describedby=\"caption-attachment-6065\" class=\"wp-image-6065 size-fusion-600\" src=\"https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/when-to-choose-matte-finish-600x351.webp\" alt=\"Applications where a matte finish is preferred on metal parts\" width=\"600\" height=\"351\" srcset=\"https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/when-to-choose-matte-finish-200x117.webp 200w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/when-to-choose-matte-finish-300x175.webp 300w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/when-to-choose-matte-finish-400x234.webp 400w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/when-to-choose-matte-finish-500x292.webp 500w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/when-to-choose-matte-finish-600x351.webp 600w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/when-to-choose-matte-finish-700x409.webp 700w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/when-to-choose-matte-finish-768x449.webp 768w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/when-to-choose-matte-finish-800x468.webp 800w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/when-to-choose-matte-finish-1024x599.webp 1024w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/when-to-choose-matte-finish-1200x702.webp 1200w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/when-to-choose-matte-finish-1536x898.webp 1536w, https:\/\/ceshi.baoxuanmetal.com\/wp-content\/uploads\/2026\/08\/when-to-choose-matte-finish.webp 1640w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><p id=\"caption-attachment-6065\" class=\"wp-caption-text\"><span style=\"color: #808080;\">Typical applications where matte finish is chosen to reduce glare, hide marks, or support coating performance.<\/span><\/p><\/div>\n<p class=\"isSelectedEnd\">If the part requires a reflective surface (mirror, optical housing, decorative chrome), matte is the wrong choice. <strong>If the part is a sealing surface or requires low friction for moving contact, a matte texture may increase friction or prevent proper sealing<\/strong> \u2014 consult the mating part requirements before specifying.<\/p>\n<h2>Limitations and Trade-offs of Matte Finish<\/h2>\n<p class=\"isSelectedEnd\">Matte finishes are not without trade-offs:<\/p>\n<ul data-spread=\"false\">\n<li><strong>Harder to clean<\/strong> \u2014 the micro-rough texture that produces the matte appearance also traps dirt, oils, and fingerprints more readily than a smooth glossy surface. In food-contact or cleanroom applications, this may be a concern.<\/li>\n<li><strong>Not all processes produce the same result<\/strong> \u2014 bead blasting creates an isotropic texture; chemical etching may leave a directional pattern. The visual appearance can differ even when Ra values are similar.<\/li>\n<li><strong>Added cost for some processes<\/strong> \u2014 matte powder coating and matte anodizing may carry a slight cost premium over standard formulations, depending on the supplier\u2019s inventory and process capabilities.<\/li>\n<li><strong>Dimensional impact<\/strong> \u2014 powder coating adds <strong>60\u2013120 \u03bcm per side.<\/strong> If your part has tight assembly tolerances, account for the coating thickness in your design.<\/li>\n<\/ul>\n<h2>FAQ<\/h2>\n<div class=\"accordian fusion-accordian\" style=\"--awb-border-size:1px;--awb-icon-size:16px;--awb-content-font-size:var(--awb-typography4-font-size);--awb-icon-alignment:left;--awb-hover-color:var(--awb-color2);--awb-border-color:var(--awb-color3);--awb-background-color:var(--awb-color1);--awb-divider-color:var(--awb-color3);--awb-divider-hover-color:var(--awb-color3);--awb-icon-color:var(--awb-color1);--awb-title-color:var(--awb-color8);--awb-content-color:var(--awb-color8);--awb-icon-box-color:var(--awb-color8);--awb-toggle-hover-accent-color:var(--awb-color5);--awb-title-font-family:var(--awb-typography1-font-family);--awb-title-font-weight:var(--awb-typography1-font-weight);--awb-title-font-style:var(--awb-typography1-font-style);--awb-title-font-size:16px;--awb-title-letter-spacing:var(--awb-typography1-letter-spacing);--awb-title-line-height:var(--awb-typography1-line-height);--awb-content-font-family:var(--awb-typography4-font-family);--awb-content-font-weight:var(--awb-typography4-font-weight);--awb-content-font-style:var(--awb-typography4-font-style);\"><div class=\"panel-group fusion-toggle-icon-boxed\" id=\"accordion-6059-1\"><div class=\"fusion-panel panel-default panel-463563c10c46cf759 fusion-toggle-has-divider\" style=\"--awb-title-color:var(--awb-color8);--awb-content-color:var(--awb-color8);\"><div class=\"panel-heading\"><h4 class=\"panel-title toggle\" id=\"toggle_463563c10c46cf759\"><a aria-expanded=\"false\" aria-controls=\"463563c10c46cf759\" role=\"button\" data-toggle=\"collapse\" data-parent=\"#accordion-6059-1\" data-target=\"#463563c10c46cf759\" href=\"#463563c10c46cf759\"><span class=\"fusion-toggle-icon-wrapper\" aria-hidden=\"true\"><i class=\"fa-fusion-box active-icon awb-icon-minus\" aria-hidden=\"true\"><\/i><i class=\"fa-fusion-box inactive-icon awb-icon-plus\" aria-hidden=\"true\"><\/i><\/span><span class=\"fusion-toggle-heading\">What is the difference between matte and flat finish?<\/span><\/a><\/h4><\/div><div id=\"463563c10c46cf759\" class=\"panel-collapse collapse\" aria-labelledby=\"toggle_463563c10c46cf759\"><div class=\"panel-body toggle-content fusion-clearfix\"><\/p>\n<p>In most manufacturing contexts, matte and flat are used interchangeably. Some paint and coating systems distinguish them by gloss level \u2014 <strong>flat is below 5 GU at 60\u00b0, while matte extends up to 10 GU.<\/strong> For metal parts, the distinction is rarely meaningful; both describe a non-reflective surface.<\/p>\n<p><\/div><\/div><\/div><div class=\"fusion-panel panel-default panel-337f37f078712f364 fusion-toggle-has-divider\" style=\"--awb-title-color:var(--awb-color8);--awb-content-color:var(--awb-color8);\"><div class=\"panel-heading\"><h4 class=\"panel-title toggle\" id=\"toggle_337f37f078712f364\"><a aria-expanded=\"false\" aria-controls=\"337f37f078712f364\" role=\"button\" data-toggle=\"collapse\" data-parent=\"#accordion-6059-1\" data-target=\"#337f37f078712f364\" href=\"#337f37f078712f364\"><span class=\"fusion-toggle-icon-wrapper\" aria-hidden=\"true\"><i class=\"fa-fusion-box active-icon awb-icon-minus\" aria-hidden=\"true\"><\/i><i class=\"fa-fusion-box inactive-icon awb-icon-plus\" aria-hidden=\"true\"><\/i><\/span><span class=\"fusion-toggle-heading\">Can you make a matte finish glossy?<\/span><\/a><\/h4><\/div><div id=\"337f37f078712f364\" class=\"panel-collapse collapse\" aria-labelledby=\"toggle_337f37f078712f364\"><div class=\"panel-body toggle-content fusion-clearfix\"><\/p>\n<p>Yes, but it requires removing the matte surface texture. For bead-blasted parts, polishing or buffing can restore a glossy appearance. For anodized or powder-coated parts, the coating must be stripped and reapplied. <strong>This adds cost and may affect dimensional tolerances.<\/strong><\/p>\n<p><\/div><\/div><\/div><div class=\"fusion-panel panel-default panel-72894ee3c5f85c45f fusion-toggle-has-divider\" style=\"--awb-title-color:var(--awb-color8);--awb-content-color:var(--awb-color8);\"><div class=\"panel-heading\"><h4 class=\"panel-title toggle\" id=\"toggle_72894ee3c5f85c45f\"><a aria-expanded=\"false\" aria-controls=\"72894ee3c5f85c45f\" role=\"button\" data-toggle=\"collapse\" data-parent=\"#accordion-6059-1\" data-target=\"#72894ee3c5f85c45f\" href=\"#72894ee3c5f85c45f\"><span class=\"fusion-toggle-icon-wrapper\" aria-hidden=\"true\"><i class=\"fa-fusion-box active-icon awb-icon-minus\" aria-hidden=\"true\"><\/i><i class=\"fa-fusion-box inactive-icon awb-icon-plus\" aria-hidden=\"true\"><\/i><\/span><span class=\"fusion-toggle-heading\">Is matte finish more expensive than glossy?<\/span><\/a><\/h4><\/div><div id=\"72894ee3c5f85c45f\" class=\"panel-collapse collapse\" aria-labelledby=\"toggle_72894ee3c5f85c45f\"><div class=\"panel-body toggle-content fusion-clearfix\"><\/p>\n<p>It depends on the process. Bead blasting is generally inexpensive and comparable to or cheaper than polishing. Matte powder coating may carry a small premium over standard gloss formulations. Matte anodizing typically costs the same as standard anodizing if the supplier stocks the process.<\/p>\n<p><\/div><\/div><\/div><div class=\"fusion-panel panel-default panel-4385fb1e8922d7e83 fusion-toggle-has-divider\" style=\"--awb-title-color:var(--awb-color8);--awb-content-color:var(--awb-color8);\"><div class=\"panel-heading\"><h4 class=\"panel-title toggle\" id=\"toggle_4385fb1e8922d7e83\"><a aria-expanded=\"false\" aria-controls=\"4385fb1e8922d7e83\" role=\"button\" data-toggle=\"collapse\" data-parent=\"#accordion-6059-1\" data-target=\"#4385fb1e8922d7e83\" href=\"#4385fb1e8922d7e83\"><span class=\"fusion-toggle-icon-wrapper\" aria-hidden=\"true\"><i class=\"fa-fusion-box active-icon awb-icon-minus\" aria-hidden=\"true\"><\/i><i class=\"fa-fusion-box inactive-icon awb-icon-plus\" aria-hidden=\"true\"><\/i><\/span><span class=\"fusion-toggle-heading\">Does matte finish scratch easily?<\/span><\/a><\/h4><\/div><div id=\"4385fb1e8922d7e83\" class=\"panel-collapse collapse\" aria-labelledby=\"toggle_4385fb1e8922d7e83\"><div class=\"panel-body toggle-content fusion-clearfix\"><\/p>\n<p>Matte surfaces can show scratches differently than glossy surfaces. A scratch on a glossy surface creates a visible line because it disrupts the mirror-like reflection. On a matte surface, scratches are less visible because the surface is already textured. <strong>However, deep scratches that remove material are equally visible on both finishes.<\/strong><\/p>\n<p><\/div><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>You have added \u201cmatte finish\u201d to a drawing callout. The  [&#8230;]<\/p>\n","protected":false},"author":1,"featured_media":6060,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[123],"tags":[],"class_list":["post-6059","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-surface-finishing-terms"],"acf":[],"_links":{"self":[{"href":"https:\/\/ceshi.baoxuanmetal.com\/de\/wp-json\/wp\/v2\/posts\/6059","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ceshi.baoxuanmetal.com\/de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ceshi.baoxuanmetal.com\/de\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ceshi.baoxuanmetal.com\/de\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ceshi.baoxuanmetal.com\/de\/wp-json\/wp\/v2\/comments?post=6059"}],"version-history":[{"count":3,"href":"https:\/\/ceshi.baoxuanmetal.com\/de\/wp-json\/wp\/v2\/posts\/6059\/revisions"}],"predecessor-version":[{"id":7210,"href":"https:\/\/ceshi.baoxuanmetal.com\/de\/wp-json\/wp\/v2\/posts\/6059\/revisions\/7210"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ceshi.baoxuanmetal.com\/de\/wp-json\/wp\/v2\/media\/6060"}],"wp:attachment":[{"href":"https:\/\/ceshi.baoxuanmetal.com\/de\/wp-json\/wp\/v2\/media?parent=6059"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ceshi.baoxuanmetal.com\/de\/wp-json\/wp\/v2\/categories?post=6059"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ceshi.baoxuanmetal.com\/de\/wp-json\/wp\/v2\/tags?post=6059"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}