![\"m\u00e9taux\"](\"https:\/\/i0.wp.com\/technologie-sciarretta.ovh\/wp-content\/uploads\/2018\/11\/briquette_metaux_alliage.jpg\")
<\/a><\/p>\nNous pouvons diviser les m\u00e9taux en 2 familles :<\/p>\n
- \n
- Les m\u00e9taux ferreux : fer, acier, fonte…<\/li>\n<\/ul>\n
![\"m\u00e9taux\"](\"https:\/\/i0.wp.com\/technologie-sciarretta.ovh\/wp-content\/uploads\/2018\/11\/fer.png?resize=439%2C125\")
<\/a><\/p>\n- \n
- Les m\u00e9taux non ferreux : aluminium, zinc, cuivre, plomb, \u00e9tain, nickel, titane, chrome… et leurs alliages comme le bronze et le laiton.<\/li>\n<\/ul>\n
![\"m\u00e9taux\"](\"https:\/\/i0.wp.com\/technologie-sciarretta.ovh\/wp-content\/uploads\/2018\/11\/alliage.png?resize=284%2C245\")
<\/a><\/p>\nLes m\u00e9taux sont en outre g\u00e9n\u00e9ralement caract\u00e9ris\u00e9s par une bonne\u00a0mall\u00e9abilit\u00e9<\/a>\u00a0et une grande\u00a0ductilit\u00e9<\/a>\u00a0qui leur permettent de se d\u00e9former sans se briser. Ainsi, le cuivre pur peut \u00eatre \u00e9tir\u00e9 pour former des\u00a0fils \u00e9lectriques<\/a>, des\u00a0tuyaux\u00a0(plomberie), \u00eatre mis en plaque et martel\u00e9 en forme de\u00a0casseroles\u00a0; l’or pur peut \u00e9galement \u00eatre mis sous forme de\u00a0feuilles\u00a0tr\u00e8s fines. \u00c0 l’inverse, certains \u00e9l\u00e9ments d’alliage<\/a>\u00a0permettent de durcir le m\u00e9tal\u00a0: c’est par exemple le cas du\u00a0carbone<\/a>\u00a0qui durcit le fer pour donner de l’acier<\/a>, de l’\u00e9tain<\/a>\u00a0qui durcit le\u00a0cuivre<\/a>\u00a0pour donner le\u00a0bronze<\/a>, ou encore de l’argent et du cuivre qui durcissent l’or. *<\/p>\n
*source wikip\u00e9dia<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"
Un m\u00e9tal est un corps simple, d’un \u00e9clat particulier (\u00e9clat m\u00e9tallique), bon conducteur de la chaleur et de l’\u00e9lectricit\u00e9, et formant, par combinaison avec l’oxyg\u00e8ne, des oxydes basiques. Des \u00e9l\u00e9ments m\u00e9talliques peuvent \u00eatre fusionn\u00e9s pour former des alliages. Nous pouvons diviser les m\u00e9taux en 2 familles : Les m\u00e9taux ferreux : fer, acier, fonte… Les […]<\/p>\n","protected":false},"author":1,"featured_media":838,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[45,20],"tags":[30],"class_list":["post-837","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-materiaux","category-ressources","tag-materiaux"],"yoast_head":"\n
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- Les m\u00e9taux non ferreux : aluminium, zinc, cuivre, plomb, \u00e9tain, nickel, titane, chrome… et leurs alliages comme le bronze et le laiton.<\/li>\n<\/ul>\n