{"id":14041,"date":"2026-09-09T09:10:57","date_gmt":"2026-09-09T09:10:57","guid":{"rendered":"https:\/\/hlh-js.com\/other\/nylon-pa6-vs-cryogenic-pc-deflash-media\/"},"modified":"2026-09-09T09:18:41","modified_gmt":"2026-09-09T09:18:41","slug":"nylon-pa6-vs-cryogenic-pc-deflash-media","status":"publish","type":"post","link":"https:\/\/hlh-js.com\/fr\/resource\/blog\/nylon-pa6-vs-cryogenic-pc-deflash-media\/","title":{"rendered":"Nylon PA6 vs Cryogenic PC Deflash Media: How to Choose"},"content":{"rendered":"

Molded rubber and plastic parts rarely fail because you picked the \u201cwrong brand of abrasive.\u201d They fail when you use ambient nylon media<\/strong> on flash that still bends, or run a cryogenic PC process<\/strong> when a simple room-temperature tumble would have been enough. This guide helps process and purchasing teams choose between Polyamide Nylon Media (PA6)<\/a> et Supports de lavage cryog\u00e9niques (PC)<\/a> \u2014 then confirm with a sample on your parts.<\/p>\n

What each media is for<\/h3>\n
\n\n\n\n\n\n\n\n\n
<\/th>\nPA6 nylon media<\/th>\nCryogenic PC media<\/th>\n<\/tr>\n<\/thead>\n
Mat\u00e9riau<\/td>\nPolyamide (nylon) cylinders<\/td>\nPolycarbonate (+ antistatic grades) cylinders \/ hex shapes<\/td>\n<\/tr>\n
Typical process<\/td>\nAmbient air blast or tumble deflashing<\/td>\nUsed with cryogenic (LN\u2082) systems; also usable ambient where specified<\/td>\n<\/tr>\n
Job<\/td>\nSoft flash \/ light burrs on parts that are already brittle enough at room temperature<\/td>\nStubborn flash on flexible polymers after flash is embrittled by cold<\/td>\n<\/tr>\n
Feel<\/td>\nGentler impact, lower risk of marking soft faces<\/td>\nHigher impact toughness; better on complex geometry and tougher flash once cold<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n

Neither product is a substitute for coating-strip plastic grit (Type II \/ III)<\/strong> or for perles en c\u00e9ramique<\/strong>. Those are different jobs.<\/p>\n

Decision rule (start here)<\/h3>\n
    \n
  1. Is the flash soft and rubbery at room temperature?<\/strong> (PA, PP, TPE, soft PVC, many elastomers)
    \u2192 You usually need cryogenic conditioning<\/strong>. Media alone at ambient often just folds the flash. Prefer PC cryogenic media<\/strong> in a qualified cryo cycle.<\/li>\n
  2. Is the part already rigid \/ thermoset at ambient?<\/strong> (many phenolics, epoxy packages, rigid housings with thin brittle flash)
    \u2192 Start with PA6 nylon<\/strong> at ambient. Step up to PC only if flash remains after a fair trial.<\/li>\n
  3. Do you already own a cryogenic deflash machine?<\/strong>
    \u2192 Spec media for that machine (size, antistatic need). PC grades are the usual workhorse with LN\u2082 systems.<\/li>\n
  4. No cryo equipment, flexible flash?<\/strong>
    \u2192 Buying harder media will not fix physics. You need process change (cryo vendor, redesign gate, or different secondary op) \u2014 not a bag of coarser nylon.<\/li>\n<\/ol>\n

    When PA6 nylon is the better first buy<\/h3>\n