{"id":2003,"date":"2021-01-20T15:22:51","date_gmt":"2021-01-20T14:22:51","guid":{"rendered":"https:\/\/www.redhillballs.com\/?page_id=2003"},"modified":"2025-09-29T19:26:42","modified_gmt":"2025-09-29T17:26:42","slug":"billes-en-alliage-de-cobalt","status":"publish","type":"page","link":"https:\/\/www.redhillballs.com\/fr\/produits\/billes-en-metaux-non-ferreux-et-alliages\/billes-en-alliage-de-cobalt\/","title":{"rendered":"Billes en Alliage de Cobalt"},"content":{"rendered":"<h2>\ud83d\udee0\ufe0f <a href=\"https:\/\/en.wikipedia.org\/wiki\/Cobalt#Alloys\">Billes en alliage de cobalt (alliage n\u00b0 20) \u2013 robustes, anti-cavitation, pr\u00eates pour milieux corrosifs<\/a><\/h2>\n<p>Les billes en alliage de cobalt (famille Co\u2013Cr\u2013Mo) offrent une excellente r\u00e9sistance \u00e0 la corrosion et \u00e0 la cavitation avec une bonne t\u00e9nacit\u00e9. Elles assurent un roulage\/\u00e9tanch\u00e9it\u00e9 propre avec faible grippage l\u00e0 o\u00f9 les inox piquent ou s\u2019usent\u2014id\u00e9ales pour vannes, pompes et instruments en fluides agressifs.<\/p>\n<h3>\ud83d\udd27 Sp\u00e9cifications techniques cl\u00e9s<\/h3>\n<ul>\n<li><strong>Composition<\/strong> : Co en balance ; Cr 27\u201330 %, Mo 5\u20136 %, C \u22640,25 %, Ni \u22643 %, Fe \u22643 % (Si, Mn mineurs)<\/li>\n<li><strong>Structure<\/strong> : alliage \u00e0 base de cobalt renforc\u00e9 par carbures (faible carbone, nuance tenace)<\/li>\n<li><strong>Duret\u00e9<\/strong> : \u2248 28\u201340 HRC (selon l\u2019\u00e9tat)<\/li>\n<li><strong>Densit\u00e9<\/strong> : ~8,4 g\/cm\u00b3<\/li>\n<li><strong>Corrosion\/Temp\u00e9rature<\/strong> : tr\u00e8s bonne en chlorures\/chimiques ; stable \u00e0 haute temp\u00e9rature<\/li>\n<li><strong>Magn\u00e9tique<\/strong> : faible perm\u00e9abilit\u00e9 ; essentiellement non magn\u00e9tique<\/li>\n<\/ul>\n<h3>\u2705 Avantages<\/h3>\n<ul>\n<li><strong>R\u00e9sistance \u00e0 la corrosion &amp; \u00e0 la cavitation<\/strong> en milieux mixtes<\/li>\n<li><strong>T\u00e9nacit\u00e9<\/strong> face aux chocs et vibrations<\/li>\n<li><strong>Faible grippage<\/strong> vs aciers et bronzes<\/li>\n<li><strong>Stabilit\u00e9 thermique<\/strong> sous cyclage<\/li>\n<\/ul>\n<h3>\ud83d\udd04 Applications<\/h3>\n<ul>\n<li><strong>Vannes &amp; pompes<\/strong> : si\u00e8ges, billes clapets\/dosage<\/li>\n<li><strong>Service marin\/chimique<\/strong><\/li>\n<li><strong>Instrumentation<\/strong> en fluides agressifs<\/li>\n<\/ul>\n<h2>\ud83d\udee0\ufe0f Billes en alliage de cobalt #6 \u2013 r\u00e9sistance polyvalente \u00e0 l\u2019usure &amp; \u00e0 la corrosion<\/h2>\n<p>Les billes d\u2019alliage de cobalt #6 (Co\u2013Cr\u2013W, \u00ab #6 \u00bb classique) sont la r\u00e9f\u00e9rence pour la r\u00e9sistance combin\u00e9e \u00e0 l\u2019usure, la corrosion et la temp\u00e9rature. Avec une fraction de carbures \u00e9quilibr\u00e9e, elles conservent une surface lisse et une stabilit\u00e9 dimensionnelle en milieux abrasifs, chauds ou charg\u00e9s en chlorures.<\/p>\n<h3>\ud83d\udd27 Sp\u00e9cifications techniques cl\u00e9s<\/h3>\n<ul>\n<li><strong>Composition<\/strong> : Co en balance ; Cr 27\u201330 %, W 4\u20136 %, C ~1,0\u20131,4 % (Ni\/Fe \u22643 % chacun ; Si, Mn mineurs)<\/li>\n<li><strong>Structure<\/strong> : matrice cobalt avec carbures dispers\u00e9s (M\u2087C\u2083\/M\u2086C)<\/li>\n<li><strong>Duret\u00e9<\/strong> : \u2248 43\u201349 HRC (\u00e9tat coul\u00e9\/forg\u00e9)<\/li>\n<li><strong>Densit\u00e9<\/strong> : ~8,4 g\/cm\u00b3<\/li>\n<li><strong>Capacit\u00e9 en temp\u00e9rature<\/strong> : duret\u00e9 \u00e0 chaud et r\u00e9sistance \u00e0 l\u2019oxydation<\/li>\n<li><strong>Magn\u00e9tique<\/strong> : faible perm\u00e9abilit\u00e9 ; essentiellement non magn\u00e9tique<\/li>\n<\/ul>\n<h3>\u2705 Avantages<\/h3>\n<ul>\n<li><strong>Excellente r\u00e9sistance au grippage &amp; \u00e0 l\u2019abrasion<\/strong><\/li>\n<li><strong>R\u00e9sistance \u00e0 la corrosion<\/strong> en chlorures et produits chimiques<\/li>\n<li><strong>Finition stable<\/strong> : faible frottement, roulage doux<\/li>\n<li><strong>Robustesse thermique<\/strong> pour service cyclique<\/li>\n<\/ul>\n<h3>\ud83d\udd04 Applications<\/h3>\n<ul>\n<li><strong>Vannes &amp; si\u00e8ges<\/strong> en boues\/service chimique<\/li>\n<li><strong>Pompes &amp; dosage<\/strong> (\u00e9l\u00e9ments)<\/li>\n<li><strong>M\u00e9canismes haute temp\u00e9rature<\/strong><\/li>\n<\/ul>\n<h2>\ud83d\udee0\ufe0f Billes en alliage de cobalt #3 \u2013 r\u00e9sistance maximale \u00e0 l\u2019abrasion &amp; \u00e0 l\u2019\u00e9rosion<\/h2>\n<p>Les billes d\u2019alliage cobalt #3 (Co\u2013Cr\u2013W \u00e0 haut carbone) procurent une tr\u00e8s grande duret\u00e9 et une tenue \u00e0 chaud pour l\u2019abrasion\/\u00e9rosion s\u00e9v\u00e8re. Elles gardent l\u2019ar\u00eate et la finition en pr\u00e9sence de sable\/particules, assurant une longue dur\u00e9e de vie l\u00e0 o\u00f9 aciers et bronzes s\u2019usent rapidement.<\/p>\n<h3>\ud83d\udd27 Sp\u00e9cifications techniques cl\u00e9s<\/h3>\n<ul>\n<li><strong>Composition<\/strong> : Co en balance ; Cr 29\u201333 %, W 12\u201314 %, C 2,4\u20133,0 % (Ni\/Fe \u22643 % chacun ; Si, Mn mineurs)<\/li>\n<li><strong>Structure<\/strong> : matrice cobalt dure avec r\u00e9seau dense de carbures<\/li>\n<li><strong>Duret\u00e9<\/strong> : \u2248 55\u201362 HRC (selon l\u2019\u00e9tat)<\/li>\n<li><strong>Densit\u00e9<\/strong> : ~8,7\u20138,8 g\/cm\u00b3<\/li>\n<li><strong>Capacit\u00e9 thermique<\/strong> : duret\u00e9 \u00e0 chaud \u00e9lev\u00e9e ; r\u00e9sistance \u00e0 l\u2019oxydation<\/li>\n<li><strong>Magn\u00e9tique<\/strong> : faible perm\u00e9abilit\u00e9 ; essentiellement non magn\u00e9tique<\/li>\n<\/ul>\n<h3>\u2705 Avantages<\/h3>\n<ul>\n<li><strong>R\u00e9sistance \u00e0 l\u2019usure s\u00e9v\u00e8re<\/strong> (abrasion\/\u00e9rosion)<\/li>\n<li><strong>Faible grippage<\/strong> vs aciers<\/li>\n<li><strong>Stabilit\u00e9 thermique<\/strong> sous charge et chaleur<\/li>\n<li><strong>Longue dur\u00e9e de service<\/strong> en milieux particulaires<\/li>\n<\/ul>\n<h3>\ud83d\udd04 Applications des billes en alliage de cobalt<\/h3>\n<ul>\n<li><strong>Vannes pour boues &amp; sable<\/strong><\/li>\n<li><strong>Atomiseurs &amp; buses<\/strong> avec flux particulaire<\/li>\n<li><strong>Si\u00e8ges\/clapets haute usure<\/strong> pour pompes\/d\u00e9bitm\u00e8tres<\/li>\n<\/ul>\n<h3>\ud83d\udce6 Nuances &amp; tailles disponibles<\/h3>\n<ul>\n<li><a href=\"https:\/\/www.redhillballs.com\/company\/precision-grades\/\"><strong>Normes<\/strong> : ISO 3290, DIN 5401, AFBMA (tol\u00e9rances \u00e9quivalentes)<\/a><\/li>\n<li><strong>Plage de diam\u00e8tres<\/strong> : tailles imp\u00e9riales et m\u00e9triques standard ; hors standard\/sur mesure sur demande<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\ud83d\udee0\ufe0f Billes en alliage de cobalt (alliage n\u00b0 20) \u2013 robustes, anti-cavitation, pr\u00eates pour milieux corrosifs Les billes en alliage de cobalt (famille Co\u2013Cr\u2013Mo) offrent une excellente r\u00e9sistance \u00e0 la corrosion et \u00e0 la cavitation avec une bonne t\u00e9nacit\u00e9. Elles assurent un roulage\/\u00e9tanch\u00e9it\u00e9 propre avec faible grippage l\u00e0 o\u00f9 les inox piquent ou s\u2019usent\u2014id\u00e9ales pour [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":8736,"parent":1991,"menu_order":6,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-2003","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.8 (Yoast SEO v28.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Billes en Alliage de Cobalt \u2013 Duret\u00e9, r\u00e9sistance et pr\u00e9cision<\/title>\n<meta name=\"description\" content=\"Billes en Alliage de Cobalt : dures, r\u00e9sistantes \u00e0 l\u2019usure et \u00e0 la corrosion, id\u00e9ales pour roulements, vannes, pompes et usages industriels.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, 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