{"id":14080,"date":"2026-10-14T07:24:29","date_gmt":"2026-10-14T07:24:29","guid":{"rendered":"https:\/\/hlh-js.com\/?p=14080"},"modified":"2026-10-14T07:24:29","modified_gmt":"2026-10-14T07:24:29","slug":"ceramic-bead-blasting-media-sizes-b20-to-b505-guide","status":"publish","type":"post","link":"https:\/\/hlh-js.com\/es\/resource\/blog\/ceramic-bead-blasting-media-sizes-b20-to-b505-guide\/","title":{"rendered":"Ceramic Bead Blasting Media Sizes Explained: B20 to B505 Comparison Guide"},"content":{"rendered":"<p>Buying <strong>ceramic bead blasting media<\/strong> is easy until someone asks: which size? B60 or B120? Coarse for cleaning, fine for cosmetics, or a peening grade for fatigue life? Choosing the wrong ceramic bead size is one of the fastest ways to miss Ra targets, waste cycle time, or fail an Almen check.<\/p>\n<p>This guide compares common ceramic bead sizes from coarse to fine, explains what changes between grades, and gives a simple selection path you can use on the shop floor.<\/p>\n<h2>Why ceramic bead size matters more than brand slogans<\/h2>\n<p>For spherical ceramic media, size controls three outcomes at once:<\/p>\n<ul>\n<li><strong>Impact energy<\/strong> (larger beads hit harder at the same pressure)<\/li>\n<li><strong>Surface roughness and texture<\/strong><\/li>\n<li><strong>Coverage speed and edge detail access<\/strong><\/li>\n<\/ul>\n<p>Hardness and chemistry matter, but within one ceramic family, size is usually the first dial you should turn.<\/p>\n<h2>Common ceramic bead size ranges compared<\/h2>\n<p>Exact mesh windows vary by manufacturer. Use this as a practical working map, then confirm with the product TDS.<\/p>\n<table>\n<thead>\n<tr>\n<th>Typical grade<\/th>\n<th>Relative size<\/th>\n<th>What it is good at<\/th>\n<th>Watch-outs<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>B20 \/ B30<\/td>\n<td>Coarse<\/td>\n<td>Heavy cleaning, strong texture, faster stock removal of light scale<\/td>\n<td>Can over-texture thin sections; not for fine cosmetics<\/td>\n<\/tr>\n<tr>\n<td>B40 \/ B60<\/td>\n<td>Medium-coarse<\/td>\n<td>General cleaning, mold release residue, robust satin finish<\/td>\n<td>May be too aggressive for polished aluminum cosmetics<\/td>\n<\/tr>\n<tr>\n<td>B80 \/ B100 \/ B120<\/td>\n<td>Medium<\/td>\n<td>Most common production finishing and many peening windows<\/td>\n<td>Needs stable reclaim so fines do not drift the mix<\/td>\n<\/tr>\n<tr>\n<td>B150 \/ B170 \/ B205<\/td>\n<td>Fine<\/td>\n<td>Finer satin, tighter Ra control, delicate edges and thin walls<\/td>\n<td>Slower coverage on heavy soil; more sensitive to pressure<\/td>\n<\/tr>\n<tr>\n<td>B400 \/ B505<\/td>\n<td>Very fine<\/td>\n<td>Micro-finishing, delicate instruments, low-profile texture<\/td>\n<td>Low cutting power; not for heavy oxide or thick coatings<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Coarse vs medium vs fine: a clear comparison<\/h2>\n<h3>Coarse ceramic beads (about B20\u2013B60)<\/h3>\n<p>Coarse grades behave more like a \u201cworkhorse cleaner.\u201d They transfer more energy per impact, so they remove light oxide, casting residue, and stubborn mold dirt faster. The trade-off is a more open texture and higher roughness.<\/p>\n<p><strong>Choose coarse when:<\/strong> cycle time matters more than ultra-fine cosmetics, and the part can accept a stronger satin.<\/p>\n<h3>Medium ceramic beads (about B80\u2013B120)<\/h3>\n<p>This is the \u201cdefault production zone\u201d for many plants. Medium sizes balance coverage speed with a controlled finish. They are also common starting points when a drawing calls for ceramic bead peening without ultra-fine texture.<\/p>\n<p><strong>Choose medium when:<\/strong> you need one grade that can handle mixed jobs without constant media swaps.<\/p>\n<h3>Fine and very fine ceramic beads (about B150\u2013B505)<\/h3>\n<p>Fine grades create a tighter, more uniform appearance and are kinder to edges, thin walls, and precision features. They take longer on heavy contamination, so pretreat or use a coarser first pass if soil is thick.<\/p>\n<p><strong>Choose fine when:<\/strong> Ra, visual uniformity, or delicate geometry come first.<\/p>\n<h2>Blasting finish vs peening performance<\/h2>\n<table>\n<thead>\n<tr>\n<th>Objetivo<\/th>\n<th>Better size direction<\/th>\n<th>Why<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Cosmetic satin on stainless or aluminum<\/td>\n<td>Medium to fine<\/td>\n<td>More uniform look, fewer deep impact marks<\/td>\n<\/tr>\n<tr>\n<td>Remove light scale \/ mold residue<\/td>\n<td>Medium-coarse to coarse<\/td>\n<td>Higher energy and faster cleaning<\/td>\n<\/tr>\n<tr>\n<td>Controlled shot peening<\/td>\n<td>Follow the print; often medium bands<\/td>\n<td>Size distribution affects Almen intensity stability<\/td>\n<\/tr>\n<tr>\n<td>Thin-wall \/ sharp-edge protection<\/td>\n<td>Fine<\/td>\n<td>Lower local impact peaks<\/td>\n<\/tr>\n<tr>\n<td>Two-step process (clean then finish)<\/td>\n<td>Coarse first, fine second<\/td>\n<td>Speed plus final appearance<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Important: peening is not automatically \u201cuse the biggest bead.\u201d Intensity is a system result of size, hardness, flow, pressure, angle, and time. Always verify with Almen strips when the drawing requires it.<\/p>\n<h2>How to choose ceramic bead size in 5 steps<\/h2>\n<ol>\n<li><strong>Read the drawing notes.<\/strong> If the print already specifies a ceramic grade or Ra window, start there.<\/li>\n<li><strong>Define the primary job.<\/strong> Cleaning, cosmetics, or fatigue life?<\/li>\n<li><strong>Check substrate thickness and edge risk.<\/strong> Thin aluminum and sharp corners usually move you finer.<\/li>\n<li><strong>Look at your reclaim system.<\/strong> Fine grades need good classification, or the mix fills with dust and process drift begins.<\/li>\n<li><strong>Run a short coupon test.<\/strong> Compare two neighboring sizes at the same pressure before locking production settings.<\/li>\n<\/ol>\n<h2>Common selection mistakes<\/h2>\n<ul>\n<li><strong>Using one size for every part.<\/strong> A grade that cleans castings well can ruin a cosmetic cover.<\/li>\n<li><strong>Raising pressure instead of changing size.<\/strong> Excess pressure can fracture media faster and widen process variation.<\/li>\n<li><strong>Ignoring worn media mix.<\/strong> Even ceramic beads need classification. A \u201cfine enough\u201d look may actually be a contaminated size blend.<\/li>\n<li><strong>Copying glass-bead settings.<\/strong> Ceramic density and toughness are different; retune flow and pressure.<\/li>\n<\/ul>\n<h2>PREGUNTAS FRECUENTES<\/h2>\n<h3>Is a smaller ceramic bead always smoother?<\/h3>\n<p>Usually yes for the same pressure and time, but not if the media is broken or the mix is dirty. Condition of the media matters as much as nominal size.<\/p>\n<h3>Can I blend two ceramic bead sizes?<\/h3>\n<p>Sometimes for special textures, but blending makes process control harder. For production peening, stay with one qualified grade unless engineering validates the blend.<\/p>\n<h3>What size should I trial first?<\/h3>\n<p>If you have no print guidance, many teams trial a medium grade first (around B100\/B120 class), then step coarser for cleaning speed or finer for cosmetics.<\/p>\n<p>Need help matching a grade to your Ra or Almen target? Share your substrate, current media, and finish requirement with HLH. You can also review our <a href=\"https:\/\/hlh-js.com\/products\/ceramic-media\/ceramic-beads-blasting-media\/\">granalla cer\u00e1mica<\/a> y <a href=\"https:\/\/hlh-js.com\/products\/ceramic-media\/ceramic-peening-beads\/\">perlas cer\u00e1micas de granallado<\/a> product pages for grade options.<\/p>","protected":false},"excerpt":{"rendered":"<p>A practical ceramic bead size guide comparing B20\u2013B505 grades for blasting and peening\u2014what each size does to roughness, coverage, and process control.<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[62,190,188,184,185],"tags":[],"class_list":["post-14080","post","type-post","status-publish","format-standard","hentry","category-blog","category-ceramic-surface-solutions","category-metal-surface-treatments","category-sandblasting-technology","category-shot-peening-solutions"],"_links":{"self":[{"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/posts\/14080","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/comments?post=14080"}],"version-history":[{"count":1,"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/posts\/14080\/revisions"}],"predecessor-version":[{"id":14083,"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/posts\/14080\/revisions\/14083"}],"wp:attachment":[{"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/media?parent=14080"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/categories?post=14080"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/tags?post=14080"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}