{"id":21589,"date":"2026-07-17T10:19:26","date_gmt":"2026-07-17T10:19:26","guid":{"rendered":"https:\/\/zjaluminum-cnc.com\/blog\/resistance-a-la-traction-de-laluminium-valeurs-par-alliage-et-etat-metallurgique\/"},"modified":"2026-07-23T02:21:41","modified_gmt":"2026-07-23T02:21:41","slug":"resistance-a-la-traction-de-laluminium-valeurs-par-alliage-et-etat-metallurgique","status":"publish","type":"post","link":"https:\/\/zjaluminum-cnc.com\/fr\/blog\/resistance-a-la-traction-de-laluminium-valeurs-par-alliage-et-etat-metallurgique\/","title":{"rendered":"R\u00e9sistance \u00e0 la traction de l\u2019aluminium : valeurs par alliage et \u00e9tat m\u00e9tallurgique"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"21589\" class=\"elementor elementor-21589 elementor-20971\" data-elementor-post-type=\"post\">\n\t\t\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-34e1d5a e-flex e-con-boxed e-con e-parent\" data-id=\"34e1d5a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9bbbf2f elementor-widget elementor-widget-text-editor\" data-id=\"9bbbf2f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>La r\u00e9sistance \u00e0 la traction de l\u2019aluminium n\u2019est pas une valeur unique. Elle va d\u2019environ <strong>60 MPa<\/strong> pour un mat\u00e9riau souple de la s\u00e9rie 1xxx \u00e0 plus de <strong>600 MPa<\/strong> pour certains tubes sp\u00e9ciaux \u00e0 haute r\u00e9sistance. L\u2019alliage, l\u2019\u00e9tat m\u00e9tallurgique, la forme du produit, l\u2019\u00e9paisseur et la direction d\u2019essai influencent tous la valeur publi\u00e9e.<\/p><p>Parmi les rep\u00e8res courants figurent environ 230 MPa pour un tube 5052-H32, au moins 260 MPa pour une extrusion standard en 6061-T6 et environ 572 MPa pour une tige ou une barre en 7075-T651. Ces valeurs sont utiles pour comparer les mat\u00e9riaux, mais elles ne constituent pas des contraintes admissibles interchangeables.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3cf425f elementor-widget elementor-widget-text-editor\" data-id=\"3cf425f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>Tableau de la r\u00e9sistance \u00e0 la traction de l\u2019aluminium<\/h2><p>Le tableau ci-dessous utilise des donn\u00e9es tra\u00e7ables provenant de fabricants. Il associe volontairement des valeurs typiques et minimales, car les deux sont utilis\u00e9es dans les travaux d\u2019ing\u00e9nierie.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8a7e5a7 elementor-widget elementor-widget-text-editor\" data-id=\"8a7e5a7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<table class=\"zj-table\">\n  <colgroup>\n    <col style=\"width:22%\">\n    <col style=\"width:20%\">\n    <col style=\"width:29%\">\n    <col style=\"width:29%\">\n  <\/colgroup>\n  <thead>\n    <tr>\n      <th scope=\"col\">Alliage et \u00e9tat<\/th>\n      <th scope=\"col\">Base produit<\/th>\n      <th scope=\"col\">R\u00e9sistance ultime \u00e0 la traction<\/th>\n      <th scope=\"col\">Limite d\u2019\u00e9lasticit\u00e9 ou contrainte conventionnelle \u00e0 0,2 %<\/th>\n    <\/tr>\n  <\/thead>\n  <tbody>\n    <tr>\n      <td>1060-O<\/td>\n      <td>Extrusion<\/td>\n      <td>60-95 MPa (8.7-13.8 ksi)<\/td>\n      <td>15 MPa minimum (2.2 ksi)<\/td>\n    <\/tr>\n    <tr>\n      <td>1100-O<\/td>\n      <td>Extrusion<\/td>\n      <td>75-105 MPa (10.9-15.2 ksi)<\/td>\n      <td>25 MPa minimum (3.6 ksi)<\/td>\n    <\/tr>\n    <tr>\n      <td>5052-H32<\/td>\n      <td>Tube<\/td>\n      <td>230 MPa (33 ksi)<\/td>\n      <td>195 MPa (28 ksi)<\/td>\n    <\/tr>\n    <tr>\n      <td>6063-T5<\/td>\n      <td>Extrusion<\/td>\n      <td>145-150 MPa (21-22 ksi)<\/td>\n      <td>D\u00e9pend de l\u2019\u00e9paisseur de paroi<\/td>\n    <\/tr>\n    <tr>\n      <td>6063-T6<\/td>\n      <td>Extrusion<\/td>\n      <td>205 MPa (30 ksi)<\/td>\n      <td>D\u00e9pend de l\u2019\u00e9paisseur de paroi<\/td>\n    <\/tr>\n    <tr>\n      <td>6061-T6\/T651<\/td>\n      <td>Extrusion<\/td>\n      <td>260 MPa (38 ksi)<\/td>\n      <td>240 MPa (35 ksi)<\/td>\n    <\/tr>\n    <tr>\n      <td>6082-T6<\/td>\n      <td>Extrusion selon EN<\/td>\n      <td>290-310 MPa (42-45 ksi)<\/td>\n      <td>250-260 MPa (36-38 ksi)<\/td>\n    <\/tr>\n    <tr>\n      <td>7075-T651<\/td>\n      <td>Tige et barre<\/td>\n      <td>572 MPa (83 ksi)<\/td>\n      <td>503 MPa (73 ksi)<\/td>\n    <\/tr>\n  <\/tbody>\n<\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8845715 elementor-widget elementor-widget-text-editor\" data-id=\"8845715\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Ce tableau est un outil de comparaison et ne remplace pas une norme mati\u00e8re. M\u00eame pour un alliage et un \u00e9tat identiques, les exigences peuvent diff\u00e9rer entre t\u00f4le, plaque, barre, tube et extrusion. Les sections \u00e9paisses et minces peuvent \u00e9galement \u00eatre soumises \u00e0 des minimums diff\u00e9rents.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ae37a80 elementor-widget elementor-widget-text-editor\" data-id=\"ae37a80\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>R\u00e9sistance \u00e0 la traction, limite d\u2019\u00e9lasticit\u00e9 et r\u00e9sistance \u00e0 la rupture<\/h2><p>La r\u00e9sistance ultime \u00e0 la traction, ou Rm\/UTS, est la contrainte d\u2019ing\u00e9nierie maximale atteinte pendant un essai de traction. Elle se calcule en divisant la charge maximale par la section transversale initiale de l\u2019\u00e9prouvette :<\/p><p style=\"text-align: center;\"><strong>UTS = charge de traction maximale \/ section transversale initiale<\/strong><\/p><p>La limite d\u2019\u00e9lasticit\u00e9 marque le d\u00e9but de la d\u00e9formation permanente. L\u2019aluminium ne pr\u00e9sente souvent pas de limite d\u2019\u00e9lasticit\u00e9 nette ; les sp\u00e9cifications utilisent donc couramment la limite conventionnelle d\u2019\u00e9lasticit\u00e9 \u00e0 0,2 %. Les documents europ\u00e9ens peuvent l\u2019appeler contrainte conventionnelle \u00e0 0,2 %.<\/p><p>La r\u00e9sistance \u00e0 la rupture correspond \u00e0 la contrainte d\u2019ing\u00e9nierie au moment o\u00f9 l\u2019\u00e9prouvette se rompt. Elle peut \u00eatre inf\u00e9rieure \u00e0 l\u2019UTS, car une \u00e9prouvette ductile commence \u00e0 se strictionner apr\u00e8s avoir atteint la charge maximale.<\/p><p>Pour la plupart des conceptions statiques, la limite d\u2019\u00e9lasticit\u00e9 ou la contrainte conventionnelle d\u00e9termine la premi\u00e8re d\u00e9formation permanente inacceptable. L\u2019UTS reste importante pour comparer les mat\u00e9riaux, contr\u00f4ler la qualit\u00e9 et effectuer les v\u00e9rifications li\u00e9es \u00e0 la rupture. Aucune de ces valeurs ne doit \u00eatre utilis\u00e9e sans les r\u00e8gles de conception applicables.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-81da157 elementor-widget elementor-widget-image\" data-id=\"81da157\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"326\" src=\"https:\/\/zjaluminum-cnc.com\/wp-content\/uploads\/2026\/07\/Aluminum-stress-strain-curve.webp\" class=\"attachment-full size-full wp-image-21591\" alt=\"Signification des courbes repr\u00e9sentant la r\u00e9sistance \u00e0 la traction, la limite d\u2019\u00e9lasticit\u00e9 et la r\u00e9sistance \u00e0 la rupture de l\u2019aluminium\" srcset=\"https:\/\/zjaluminum-cnc.com\/wp-content\/uploads\/2026\/07\/Aluminum-stress-strain-curve.webp 600w, https:\/\/zjaluminum-cnc.com\/wp-content\/uploads\/2026\/07\/Aluminum-stress-strain-curve-300x163.webp 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Courbe contrainte-d\u00e9formation de l\u2019aluminium<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-eb67519 elementor-widget elementor-widget-text-editor\" data-id=\"eb67519\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Le point f de la courbe repr\u00e9sent\u00e9e sur la figure correspond au point de r\u00e9sistance \u00e0 la traction.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f811216 elementor-widget elementor-widget-text-editor\" data-id=\"f811216\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>Pourquoi la valeur varie-t-elle autant ?<\/h2><h3>Composition de l\u2019alliage et m\u00e9canisme de durcissement<\/h3><p>Le magn\u00e9sium renforce les alliages 5xxx par durcissement en solution solide et \u00e9crouissage. Les familles 2xxx, 6xxx et 7xxx peuvent acqu\u00e9rir une r\u00e9sistance importante gr\u00e2ce au traitement thermique par pr\u00e9cipitation.<\/p><p>Un produit 6061 \u00e0 l\u2019\u00e9tat O se comporte tr\u00e8s diff\u00e9remment d\u2019un 6061-T6. De m\u00eame, le 5052-H32 correspond \u00e0 un niveau d\u00e9fini d\u2019\u00e9crouissage et de stabilisation.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f999fa8 elementor-widget elementor-widget-text-editor\" data-id=\"f999fa8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3>\u00c9tat m\u00e9tallurgique et proc\u00e9d\u00e9 de transformation<\/h3><p>Le travail \u00e0 froid augmente g\u00e9n\u00e9ralement la r\u00e9sistance \u00e0 la traction et la limite d\u2019\u00e9lasticit\u00e9, tout en r\u00e9duisant la ductilit\u00e9. La mise en solution et le vieillissement peuvent renforcer les alliages aptes au traitement thermique. Un \u00e9chauffement non ma\u00eetris\u00e9 peut annuler une partie de ce gain.<\/p><p>L\u2019usinage et l\u2019anodisation ne transforment pas un alliage de base en un \u00e9tat plus r\u00e9sistant. Ils peuvent influencer la g\u00e9om\u00e9trie locale, les contraintes r\u00e9siduelles, le comportement en fatigue ou les performances de surface, mais ils ne justifient pas de remplacer la valeur certifi\u00e9e de r\u00e9sistance \u00e0 la traction du mat\u00e9riau massif.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-61caf32 elementor-widget elementor-widget-text-editor\" data-id=\"61caf32\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3>Forme du produit, dimension de section et direction<\/h3><p>Le laminage, l\u2019extrusion, l\u2019\u00e9tirage et le forgeage cr\u00e9ent des microstructures et des textures diff\u00e9rentes. Les sp\u00e9cifications distinguent donc les t\u00f4les, plaques, tiges, barres, tubes, pi\u00e8ces forg\u00e9es et extrusions. La direction d\u2019essai peut \u00eatre importante, car les produits corroy\u00e9s sont anisotropes.<\/p><p>La dimension de la section compte \u00e9galement. Une extrusion \u00e9paisse peut refroidir et vieillir diff\u00e9remment d\u2019une paroi mince. C\u2019est pourquoi les donn\u00e9es ci-dessus pour les alliages 6063 et 6082 r\u00e9partissent les exigences selon l\u2019\u00e9paisseur de paroi et la g\u00e9om\u00e9trie du profil\u00e9.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-30826ed elementor-widget elementor-widget-text-editor\" data-id=\"30826ed\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>Comment mesure-t-on la r\u00e9sistance \u00e0 la traction de l\u2019aluminium ?<\/h2><p>Une \u00e9prouvette usin\u00e9e ou une section compl\u00e8te est soumise \u00e0 une charge uniaxiale contr\u00f4l\u00e9e. L\u2019essai enregistre la charge et l\u2019allongement jusqu\u2019\u00e0 la rupture. Les dimensions initiales permettent de convertir la charge en contrainte d\u2019ing\u00e9nierie, tandis qu\u2019un extensom\u00e8tre mesure la d\u00e9formation sur une longueur de r\u00e9f\u00e9rence d\u00e9finie.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a3dd4ac elementor-widget elementor-widget-image\" data-id=\"a3dd4ac\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"300\" src=\"https:\/\/zjaluminum-cnc.com\/wp-content\/uploads\/2026\/07\/Aluminum-tensile-strength-test.webp\" class=\"attachment-full size-full wp-image-21592\" alt=\"Essai de r\u00e9sistance \u00e0 la traction de l\u2019aluminium\" srcset=\"https:\/\/zjaluminum-cnc.com\/wp-content\/uploads\/2026\/07\/Aluminum-tensile-strength-test.webp 600w, https:\/\/zjaluminum-cnc.com\/wp-content\/uploads\/2026\/07\/Aluminum-tensile-strength-test-300x150.webp 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Essai de r\u00e9sistance \u00e0 la traction de l\u2019aluminium<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e75463a elementor-widget elementor-widget-text-editor\" data-id=\"e75463a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Les sp\u00e9cifications nord-am\u00e9ricaines relatives aux produits en aluminium renvoient souvent aux normes <a href=\"https:\/\/store.astm.org\/standards\/b557\">ASTM B557 ou B557M<\/a>. L\u2019ASTM pr\u00e9cise qu\u2019une \u00e9prouvette normalis\u00e9e peut ne pas repr\u00e9senter enti\u00e8rement le produit final. Les essais g\u00e9n\u00e9raux des mat\u00e9riaux m\u00e9talliques peuvent plut\u00f4t faire r\u00e9f\u00e9rence \u00e0 l\u2019<a href=\"https:\/\/store.astm.org\/e0008_e0008m-25.html\">ASTM E8\/E8M<\/a>. En Europe et \u00e0 l\u2019international, l\u2019<a href=\"https:\/\/www.iso.org\/standard\/78322.html\">ISO 6892-1<\/a> est couramment utilis\u00e9e pour les essais \u00e0 temp\u00e9rature ambiante.<\/p><p>Un rapport exploitable doit pr\u00e9ciser la norme et l\u2019orientation de l\u2019\u00e9prouvette. Il doit \u00e9galement indiquer l\u2019alliage, l\u2019\u00e9tat m\u00e9tallurgique, la forme du produit, les dimensions et la temp\u00e9rature d\u2019essai. Les r\u00e9sultats comprennent normalement l\u2019UTS, la limite d\u2019\u00e9lasticit\u00e9 ou la contrainte conventionnelle, ainsi que l\u2019allongement.<\/p><p>Une seule \u00e9prouvette ne caract\u00e9rise pas toutes les pi\u00e8ces d\u2019un lot. Les crit\u00e8res d\u2019acceptation d\u00e9coulent de la sp\u00e9cification d\u2019achat, du plan d\u2019\u00e9chantillonnage et de la tra\u00e7abilit\u00e9 exig\u00e9e pour le lot. Notre aper\u00e7u des <a href=\"https:\/\/zjaluminum-cnc.com\/blog\/types-of-material-testing-and-applications-in-aluminum-processing\/\">essais de mat\u00e9riaux dans la transformation de l\u2019aluminium<\/a> explique comment les r\u00e9sultats de traction compl\u00e8tent les contr\u00f4les de composition chimique, de duret\u00e9, de dimensions et de surface.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ca2186d elementor-widget elementor-widget-text-editor\" data-id=\"ca2186d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>Que se passe-t-il apr\u00e8s le soudage ou \u00e0 temp\u00e9rature \u00e9lev\u00e9e ?<\/h2><p>Les donn\u00e9es du m\u00e9tal de base \u00e0 temp\u00e9rature ambiante ne doivent pas \u00eatre appliqu\u00e9es sans discernement \u00e0 une conception soud\u00e9e. Le soudage par fusion peut adoucir la zone affect\u00e9e thermiquement des alliages 6xxx durcis par pr\u00e9cipitation. Les fiches techniques Hydro des alliages 6061 et 6063 signalent toutes deux une r\u00e9duction des propri\u00e9t\u00e9s T6 \u00e0 proximit\u00e9 des soudures.<\/p><p>L\u2019ampleur de cette r\u00e9duction d\u00e9pend de l\u2019alliage, de l\u2019\u00e9tat m\u00e9tallurgique, du proc\u00e9d\u00e9 de soudage, de l\u2019apport thermique, du m\u00e9tal d\u2019apport, de la g\u00e9om\u00e9trie du joint et d\u2019un \u00e9ventuel traitement apr\u00e8s soudage. Utilisez le code de calcul applicable ou des donn\u00e9es de joint qualifi\u00e9es. N\u2019attribuez pas la valeur T6 du mat\u00e9riau non soud\u00e9 \u00e0 la zone locale affect\u00e9e thermiquement.<\/p><p>La temp\u00e9rature cr\u00e9e un probl\u00e8me de domaine d\u2019application similaire. Le tableau ci-dessus contient des donn\u00e9es \u00e0 temp\u00e9rature ambiante. Si un composant doit supporter une charge \u00e0 chaud, utilisez des donn\u00e9es de r\u00e9sistance d\u00e9pendant de la temp\u00e9rature et le code applicable. Un certificat \u00e0 temp\u00e9rature ambiante n\u2019\u00e9tablit pas la capacit\u00e9 \u00e0 temp\u00e9rature \u00e9lev\u00e9e.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c91f6f7 elementor-widget elementor-widget-image\" data-id=\"c91f6f7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"390\" src=\"https:\/\/zjaluminum-cnc.com\/wp-content\/uploads\/2026\/07\/Curve-of-tensile-strength-of-ZL114A-aluminum-alloy-as-a-function-of-temperature.webp\" class=\"attachment-full size-full wp-image-21593\" alt=\"Courbe de la r\u00e9sistance \u00e0 la traction de l\u2019alliage d\u2019aluminium ZL114A en fonction de la temp\u00e9rature\" srcset=\"https:\/\/zjaluminum-cnc.com\/wp-content\/uploads\/2026\/07\/Curve-of-tensile-strength-of-ZL114A-aluminum-alloy-as-a-function-of-temperature.webp 600w, https:\/\/zjaluminum-cnc.com\/wp-content\/uploads\/2026\/07\/Curve-of-tensile-strength-of-ZL114A-aluminum-alloy-as-a-function-of-temperature-300x195.webp 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Courbe de la r\u00e9sistance \u00e0 la traction de l\u2019alliage d\u2019aluminium ZL114A en fonction de la temp\u00e9rature<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a99faa9 elementor-widget elementor-widget-text-editor\" data-id=\"a99faa9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>Comment choisir la bonne valeur de r\u00e9sistance<\/h2><p>Commencez par la pi\u00e8ce, et non par un tableau g\u00e9n\u00e9rique.<\/p><ol><li>D\u00e9finissez le cas de charge et la limite de d\u00e9faillance. D\u00e9terminez si la plastification, la rupture ultime, la fatigue, le flambement ou le comportement des assemblages est dimensionnant.<\/li><li>Fixez l\u2019alliage, l\u2019\u00e9tat m\u00e9tallurgique et la forme du produit. Incluez l\u2019\u00e9paisseur de paroi ou de plaque et toute direction de grain requise.<\/li><li>Identifiez les normes mati\u00e8re et de conception applicables, en tenant compte du march\u00e9 de destination et de l\u2019usage final.<\/li><li>Utilisez la bonne cat\u00e9gorie de propri\u00e9t\u00e9. S\u00e9parez les valeurs typiques, minimales et de calcul.<\/li><li>Tenez compte de la fabrication. Examinez le formage, le soudage, le traitement thermique, l\u2019usinage et la temp\u00e9rature de service.<\/li><li>D\u00e9finissez la v\u00e9rification. Indiquez sur le plan ou la commande le certificat requis, la tra\u00e7abilit\u00e9 du lot, l\u2019\u00e9chantillonnage et la m\u00e9thode d\u2019essai.<\/li><\/ol><p>Cette s\u00e9quence \u00e9vite une erreur d\u2019approvisionnement courante : choisir un alliage en fonction d\u2019une UTS \u00e9lev\u00e9e, puis acheter un autre \u00e9tat m\u00e9tallurgique ou une autre forme de produit. Elle emp\u00eache \u00e9galement la r\u00e9sistance de faire oublier la tenue \u00e0 la corrosion, la formabilit\u00e9, la soudabilit\u00e9, la finition et le co\u00fbt. Notre guide sur le <a href=\"https:\/\/zjaluminum-cnc.com\/fr\/blog\/comment-choisir-les-bons-alliages-daluminium-pour-lextrusion\/\">choix d\u2019un alliage d\u2019extrusion d\u2019aluminium<\/a> d\u00e9taille ces compromis.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6363a7e elementor-widget elementor-widget-text-editor\" data-id=\"6363a7e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>Que demander \u00e0 un fournisseur d\u2019aluminium ?<\/h2><p>Pour une pi\u00e8ce dont la r\u00e9sistance est critique, transmettez davantage qu\u2019un simple num\u00e9ro d\u2019alliage. Une demande utile comprend :<\/p><ul><li>le plan et son indice de r\u00e9vision ;<\/li><li>l\u2019alliage, l\u2019\u00e9tat m\u00e9tallurgique et la sp\u00e9cification du produit ;<\/li><li>la forme du produit et l\u2019\u00e9paisseur de section critique ;<\/li><li>les exigences minimales de limite d\u2019\u00e9lasticit\u00e9 et de r\u00e9sistance \u00e0 la traction, si elles ne sont pas d\u00e9j\u00e0 impos\u00e9es par la sp\u00e9cification ;<\/li><li>la norme d\u2019essai, la direction, l\u2019\u00e9chantillonnage et les crit\u00e8res d\u2019acceptation ;<\/li><li>les exigences relatives au certificat et \u00e0 la tra\u00e7abilit\u00e9 du lot ;<\/li><li>les conditions de soudage, de traitement thermique, de finition de surface et de temp\u00e9rature de service.<\/li><\/ul><p>Demandez si les propri\u00e9t\u00e9s indiqu\u00e9es dans le devis sont typiques ou garanties minimales. Confirmez \u00e9galement si le certificat indique les r\u00e9sultats r\u00e9els du lot ou uniquement les limites de la sp\u00e9cification.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4da2327 elementor-widget elementor-widget-text-editor\" data-id=\"4da2327\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>Conclusion : utilisez une r\u00e9sistance \u00e0 la traction fond\u00e9e sur une sp\u00e9cification<\/h2><p>Utilisez une valeur rattach\u00e9e \u00e0 une sp\u00e9cification de produit reconnue, et non le nombre le plus \u00e9lev\u00e9 d\u2019un tableau g\u00e9n\u00e9ral. Indiquez l\u2019alliage et l\u2019\u00e9tat complets, la forme du produit, la plage d\u2019\u00e9paisseur, la direction d\u2019essai et les justificatifs requis. Pour les pi\u00e8ces soud\u00e9es ou utilis\u00e9es \u00e0 chaud, ajoutez les r\u00e8gles applicables \u00e0 l\u2019\u00e9tat affect\u00e9.<\/p><p>Cette d\u00e9finition donne au concepteur, au fabricant et au laboratoire d\u2019essai le m\u00eame objectif d\u2019acceptation. Elle est bien plus utile que de demander un \u00ab aluminium r\u00e9sistant \u00bb.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-aa92e66 elementor-widget elementor-widget-text-editor\" data-id=\"aa92e66\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>Questions fr\u00e9quentes<\/h2><h3>Quelle est la r\u00e9sistance \u00e0 la traction de l\u2019aluminium pur ?<\/h3><p>Il n\u2019existe pas de valeur unique pour \u00ab l\u2019aluminium pur \u00bb. Dans les donn\u00e9es Hydro, les extrusions recuites de puret\u00e9 commerciale 1060 et 1100 se situent entre environ 60 et 105 MPa. Les produits 1xxx \u00e9crouis peuvent \u00eatre plus r\u00e9sistants ; la puret\u00e9, l\u2019\u00e9tat m\u00e9tallurgique et la forme doivent donc \u00eatre pr\u00e9cis\u00e9s.<\/p><h3>Quelle est la r\u00e9sistance \u00e0 la traction de l\u2019aluminium 6061-T6 ?<\/h3><p>Un minimum courant pour une extrusion 6061-T6\/T6511 est de 260 MPa, soit 38 ksi. Les t\u00f4les, plaques, barres, tubes et classes d\u2019extrusions sp\u00e9ciales peuvent avoir des exigences diff\u00e9rentes. V\u00e9rifiez la sp\u00e9cification du produit et la plage d\u2019\u00e9paisseur applicables.<\/p><h3>Le 7075 est-il l\u2019alliage d\u2019aluminium le plus r\u00e9sistant ?<\/h3><p>Le 7075-T651 est une r\u00e9f\u00e9rence courante \u00e0 haute r\u00e9sistance, avec une UTS typique d\u2019environ 572 MPa pour les tiges et les barres. Il ne repr\u00e9sente pas la limite absolue de l\u2019aluminium. Certains alliages et certaines sp\u00e9cifications de produits sp\u00e9cialis\u00e9s peuvent d\u00e9passer 600 MPa. Leur disponibilit\u00e9, leur t\u00e9nacit\u00e9, leur comportement \u00e0 la corrosion, leur formabilit\u00e9 et leur co\u00fbt peuvent \u00eatre moins favorables.<\/p><h3>L\u2019aluminium est-il moins r\u00e9sistant que l\u2019acier ?<\/h3><p>La plupart des alliages d\u2019aluminium ont une rigidit\u00e9 et une r\u00e9sistance absolues inf\u00e9rieures \u00e0 celles des aciers de construction courants. Cependant, l\u2019aluminium poss\u00e8de environ un tiers de leur masse volumique ; les comparaisons de r\u00e9sistance sp\u00e9cifique peuvent donc conduire \u00e0 une conclusion diff\u00e9rente. Le choix final d\u00e9pend aussi de la g\u00e9om\u00e9trie de la section, de la corrosion, de l\u2019assemblage, du volume de production et du co\u00fbt.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>La r\u00e9sistance \u00e0 la traction de l\u2019aluminium n\u2019est pas une valeur unique. Elle va d\u2019environ 60 MPa pour un mat\u00e9riau [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":21590,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":"","_members_access_role":[],"_members_access_error":""},"categories":[64],"tags":[],"class_list":["post-21589","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-material"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>R\u00e9sistance \u00e0 la traction de l\u2019aluminium : guide des alliages et des \u00e9tats m\u00e9tallurgiques<\/title>\n<meta name=\"description\" content=\"La r\u00e9sistance \u00e0 la traction de l\u2019aluminium varie d\u2019environ 60 MPa \u00e0 plus de 600 MPa. 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