{"id":114247,"date":"2022-02-02T09:35:30","date_gmt":"2022-02-02T08:35:30","guid":{"rendered":"https:\/\/material-properties.org\/acier-inoxydable-austenitique-densite-resistance-durete-point-de-fusion\/"},"modified":"2022-03-07T08:55:53","modified_gmt":"2022-03-07T07:55:53","slug":"acier-inoxydable-austenitique-densite-resistance-durete-point-de-fusion","status":"publish","type":"post","link":"https:\/\/material-properties.org\/fr\/acier-inoxydable-austenitique-densite-resistance-durete-point-de-fusion\/","title":{"rendered":"Acier inoxydable aust\u00e9nitique &#8211; Densit\u00e9 &#8211; R\u00e9sistance &#8211; Duret\u00e9 &#8211; Point de fusion"},"content":{"rendered":"<h2>\u00c0 propos de l&rsquo;acier inoxydable aust\u00e9nitique &#8211; Type 304<\/h2>\n<p><strong>L&rsquo;acier inoxydable de type 304<\/strong>\u00a0(contenant 18\u00a0% \u00e0 20\u00a0% de chrome et 8\u00a0% \u00e0 10,5\u00a0% de nickel) est l&rsquo;acier inoxydable le plus courant.\u00a0Il est \u00e9galement appel\u00e9 acier\u00a0inoxydable \u00ab\u00a0<strong>18\/8 \u00bb en raison de sa composition qui comprend 18 % de chrome et 8 % de nickel.\u00a0<\/strong>Cet alliage r\u00e9siste \u00e0 la plupart des types de corrosion.\u00a0C&rsquo;est un acier inoxydable aust\u00e9nitique et il poss\u00e8de \u00e9galement d&rsquo;excellentes propri\u00e9t\u00e9s cryog\u00e9niques, une bonne r\u00e9sistance \u00e0 haute temp\u00e9rature ainsi que de bonnes propri\u00e9t\u00e9s de formage et de soudage.\u00a0Il est moins conducteur \u00e9lectriquement et thermiquement que\u00a0<a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/metals-what-are-metals\/steels-properties-of-steels\/carbon-steel-plain-carbon-steel\/\">l&rsquo;acier au carbone<\/a>\u00a0et est essentiellement non magn\u00e9tique.<\/p>\n<p><strong>L&rsquo;acier inoxydable de type 304L<\/strong>, largement utilis\u00e9 dans l&rsquo;industrie nucl\u00e9aire, est une version \u00e0 tr\u00e8s faible teneur en carbone de l&rsquo;alliage d&rsquo;acier 304.\u00a0Cette nuance a des propri\u00e9t\u00e9s m\u00e9caniques l\u00e9g\u00e8rement inf\u00e9rieures \u00e0 la nuance standard 304, mais reste largement utilis\u00e9e gr\u00e2ce \u00e0 sa polyvalence.\u00a0La faible teneur en carbone du 304L minimise les pr\u00e9cipitations de carbure d\u00e9l\u00e9t\u00e8res ou nocives r\u00e9sultant du soudage.\u00a0Le 304L peut donc \u00eatre utilis\u00e9 \u00ab\u00a0tel que soud\u00e9\u00a0\u00bb dans des environnements \u00e0 corrosion s\u00e9v\u00e8re, et il \u00e9limine le besoin de recuit.\u00a0Le grade 304 a \u00e9galement une bonne r\u00e9sistance \u00e0 l&rsquo;oxydation en service intermittent jusqu&rsquo;\u00e0 870 \u00b0C et en service continu jusqu&rsquo;\u00e0 925 \u00b0C.<\/p>\n<p>Le corps de la\u00a0<a href=\"https:\/\/www.nuclear-power.com\/nuclear-power-plant\/nuclear-reactor\/reactor-pressure-vessel\/\">cuve du r\u00e9acteur<\/a>\u00a0est construit\u00a0<strong>en acier au carbone faiblement alli\u00e9 de haute qualit\u00e9<\/strong>\u00a0et toutes les surfaces qui entrent en contact avec le fluide de refroidissement du r\u00e9acteur\u00a0<strong>sont rev\u00eatues<\/strong>\u00a0d&rsquo;un minimum d&rsquo;environ 3 \u00e0 10 mm d&rsquo;\u00a0<strong>acier inoxydable aust\u00e9nitique<\/strong>\u00a0afin de minimiser la corrosion.\u00a0\u00c9tant donn\u00e9 que la nuance 304L ne n\u00e9cessite pas de recuit apr\u00e8s soudage, elle est largement utilis\u00e9e dans les composants de gros calibre.<\/p>\n<div class=\"su-divider su-divider-style-dotted\" style=\"margin:25px 0;border-width:3px;border-color:#999999\"><\/div>\n<p><a href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/03\/austenitic-steel-properties-density-strength-price.png\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-108249\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/03\/austenitic-steel-properties-density-strength-price.png\" alt=\"acier aust\u00e9nitique propri\u00e9t\u00e9s densit\u00e9 r\u00e9sistance prix\" width=\"500\" height=\"500\" srcset=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/03\/austenitic-steel-properties-density-strength-price.png 1000w, https:\/\/material-properties.org\/wp-content\/uploads\/2021\/03\/austenitic-steel-properties-density-strength-price-300x300.png 300w, https:\/\/material-properties.org\/wp-content\/uploads\/2021\/03\/austenitic-steel-properties-density-strength-price-150x150.png 150w, https:\/\/material-properties.org\/wp-content\/uploads\/2021\/03\/austenitic-steel-properties-density-strength-price-768x768.png 768w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/a><\/p>\n<div class=\"su-divider su-divider-style-dotted\" style=\"margin:25px 0;border-width:3px;border-color:#999999\"><\/div>\n<h3 style=\"text-align: center;\">R\u00e9sum\u00e9<\/h3>\n<table class=\"a\">\n<tbody>\n<tr class=\"b\">\n<td style=\"text-align: center;\">Nom<\/td>\n<td style=\"text-align: center;\"><strong>Acier inoxydable aust\u00e9nitique<\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\">Phase \u00e0 STP<\/td>\n<td style=\"text-align: center;\"><strong>solide<\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\">Densit\u00e9<\/td>\n<td style=\"text-align: center;\"><strong>7850kg\/m3<\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\">R\u00e9sistance \u00e0 la traction ultime<\/td>\n<td style=\"text-align: center;\"><strong>515 MPa<\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\">Limite d&rsquo;\u00e9lasticit\u00e9<\/td>\n<td style=\"text-align: center;\"><strong>205 MPa<\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\">Module de Young<\/td>\n<td style=\"text-align: center;\"><strong>193 GPa<\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\">Duret\u00e9 Brinell<\/td>\n<td style=\"text-align: center;\"><strong>201 BHN<\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\">Point de fusion<\/td>\n<td style=\"text-align: center;\"><strong>1450\u00b0C<\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\">Conductibilit\u00e9 thermique<\/td>\n<td style=\"text-align: center;\"><strong>20W\/mK<\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\">Capacit\u00e9 thermique<\/td>\n<td style=\"text-align: center;\"><strong><span style=\"text-align: start;\">500 J\/g\u00b7K<\/span><\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\">Prix<\/td>\n<td style=\"text-align: center;\"><strong>2 $\/kg<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div class=\"su-divider su-divider-style-dotted\" style=\"margin:25px 0;border-width:3px;border-color:#999999\"><\/div>\n<h2>Densit\u00e9 de l&rsquo;acier inoxydable aust\u00e9nitique<\/h2>\n<p class=\"wp-caption-text\">Les densit\u00e9s typiques de diverses substances sont \u00e0 la pression atmosph\u00e9rique.\u00a0<a href=\"https:\/\/material-properties.org\/what-is-density-physics-definition\/\"><strong>La densit\u00e9<\/strong><\/a>\u00a0\u00a0est d\u00e9finie comme la\u00a0\u00a0<strong>masse par unit\u00e9 de volume<\/strong>.\u00a0C&rsquo;est une\u00a0\u00a0<strong>propri\u00e9t\u00e9 intensive<\/strong>, qui est d\u00e9finie math\u00e9matiquement comme la masse divis\u00e9e par le volume:\u00a0 <strong>\u03c1 = m\/V<\/strong><\/p>\n<p>En d&rsquo;autres termes, la densit\u00e9 (\u03c1) d&rsquo;une substance est la masse totale (m) de cette substance divis\u00e9e par le volume total (V) occup\u00e9 par cette substance. L&rsquo;unit\u00e9 SI standard est\u00a0<strong>le kilogramme par m\u00e8tre cube<\/strong>\u00a0(<strong>kg\/m<sup>3<\/sup><\/strong>). L&rsquo;unit\u00e9 anglaise standard est\u00a0<strong>la masse de livres par pied cube<\/strong> (<strong>lbm\/ft<sup>3<\/sup><\/strong>).<\/p>\n<p>La densit\u00e9 de l&rsquo;acier inoxydable aust\u00e9nitique est de\u00a0<strong>7850 kg\/m<sup>3<\/sup>.<\/strong><\/p>\n<h3>Exemple: Densit\u00e9<\/h3>\n<p>Calculez la hauteur d&rsquo;un cube en acier inoxydable aust\u00e9nitique, qui p\u00e8se une tonne m\u00e9trique.<\/p>\n<p><strong>Solution:<\/strong><\/p>\n<p><strong>La densit\u00e9<\/strong>\u00a0\u00a0est d\u00e9finie comme la\u00a0\u00a0<strong>masse par unit\u00e9 de volume<\/strong>. Il est math\u00e9matiquement d\u00e9fini comme la masse divis\u00e9e par le volume:\u00a0<strong>\u03c1 = m\/V<\/strong><\/p>\n<p>Comme le volume d&rsquo;un cube est la troisi\u00e8me puissance de ses c\u00f4t\u00e9s (V = a<sup>3<\/sup>), la hauteur de ce cube peut \u00eatre calcul\u00e9e:<\/p>\n<p><a href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/05\/density-equation.png\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-109277 size-full\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/05\/density-equation.png\" alt=\"densit\u00e9 du mat\u00e9riau - \u00e9quation\" width=\"281\" height=\"125\" \/><\/a><\/p>\n<p>La hauteur de ce cube est alors\u00a0<strong>a = 0,503 m<\/strong>.<\/p>\n<div class=\"su-divider su-divider-style-dotted\" style=\"margin:25px 0;border-width:3px;border-color:#999999\"><\/div> <div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<\/div><\/div> <div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<h3 style=\"text-align: center;\">Densit\u00e9 des mat\u00e9riaux<\/h3>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"wp-image-108113 size-medium aligncenter\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/02\/Material-Table-Density-300x179.png\" alt=\"Tableau des mat\u00e9riaux - Densit\u00e9 des mat\u00e9riaux\" width=\"300\" height=\"179\" srcset=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/02\/Material-Table-Density-300x179.png 300w, https:\/\/material-properties.org\/wp-content\/uploads\/2021\/02\/Material-Table-Density-1024x610.png 1024w, https:\/\/material-properties.org\/wp-content\/uploads\/2021\/02\/Material-Table-Density-768x458.png 768w, https:\/\/material-properties.org\/wp-content\/uploads\/2021\/02\/Material-Table-Density.png 1368w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<\/div><\/div> <div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<\/div><\/div> <div class=\"su-divider su-divider-style-dotted\" style=\"margin:25px 0;border-width:3px;border-color:#999999\"><\/div>\n<h2>Propri\u00e9t\u00e9s m\u00e9caniques de l&rsquo;acier inoxydable aust\u00e9nitique<\/h2>\n<h3>R\u00e9sistance de l&rsquo;acier inoxydable aust\u00e9nitique<\/h3>\n<p>En m\u00e9canique des mat\u00e9riaux, la\u00a0<strong>r\u00e9sistance d&rsquo;un mat\u00e9riau<\/strong>\u00a0est sa capacit\u00e9 \u00e0 supporter une charge appliqu\u00e9e sans rupture ni d\u00e9formation plastique.\u00a0<strong>La r\u00e9sistance des mat\u00e9riaux<\/strong>\u00a0consid\u00e8re essentiellement la relation entre les\u00a0<strong>charges externes<\/strong>\u00a0appliqu\u00e9es \u00e0 un mat\u00e9riau et la\u00a0<strong>d\u00e9formation<\/strong>\u00a0ou la modification des dimensions du mat\u00e9riau qui en r\u00e9sulte.\u00a0Lors de la conception de structures et de machines, il est important de tenir compte de ces facteurs, afin que le mat\u00e9riau s\u00e9lectionn\u00e9 ait une r\u00e9sistance suffisante pour r\u00e9sister aux charges ou forces appliqu\u00e9es et conserver sa forme d&rsquo;origine.<\/p>\n<p><strong>La r\u00e9sistance d&rsquo;un mat\u00e9riau<\/strong>\u00a0est sa capacit\u00e9 \u00e0 supporter cette charge appliqu\u00e9e sans d\u00e9faillance ni d\u00e9formation plastique.\u00a0Pour la contrainte de traction, la capacit\u00e9 d&rsquo;un mat\u00e9riau ou d&rsquo;une structure \u00e0 supporter des charges tendant \u00e0 s&rsquo;allonger est appel\u00e9e r\u00e9sistance ultime \u00e0 la traction (UTS).\u00a0<a href=\"https:\/\/material-properties.org\/what-is-yield-strength-yield-point-definition\/\">La<\/a>\u00a0limite d&rsquo;\u00e9lasticit\u00e9 ou la limite d&rsquo;\u00e9lasticit\u00e9 est la propri\u00e9t\u00e9 du mat\u00e9riau d\u00e9finie comme la contrainte \u00e0 laquelle un mat\u00e9riau commence \u00e0 se d\u00e9former plastiquement, tandis que la limite d&rsquo;\u00e9lasticit\u00e9 est le point o\u00f9 la d\u00e9formation non lin\u00e9aire (\u00e9lastique + plastique) commence.\u00a0En cas de contrainte de traction d&rsquo;une barre uniforme (courbe contrainte-d\u00e9formation), la\u00a0\u00a0<a href=\"https:\/\/material-properties.org\/what-is-hookes-law-definition\/\"><b>loi de Hooke<\/b><\/a>\u00a0d\u00e9crit le comportement d&rsquo;une barre dans la r\u00e9gion \u00e9lastique.\u00a0Le\u00a0<a href=\"https:\/\/material-properties.org\/what-is-youngs-modulus-of-elasticity-definition\/\">module d&rsquo;\u00e9lasticit\u00e9 de Young<\/a>est le module d&rsquo;\u00e9lasticit\u00e9 pour les contraintes de traction et de compression dans le r\u00e9gime d&rsquo;\u00e9lasticit\u00e9 lin\u00e9aire d&rsquo;une d\u00e9formation uniaxiale et est g\u00e9n\u00e9ralement \u00e9valu\u00e9 par des essais de traction.<\/p>\n<p>Voir aussi: <a href=\"https:\/\/material-properties.org\/what-is-strength-definition\/\">R\u00e9sistance des mat\u00e9riaux<\/a><\/p>\n<h3>R\u00e9sistance \u00e0 la traction ultime de l&rsquo;acier inoxydable aust\u00e9nitique<\/h3>\n<p>La r\u00e9sistance \u00e0 la traction ultime de l&rsquo;acier inoxydable aust\u00e9nitique est de 280 MPa.<\/p>\n<h3>Limite d&rsquo;\u00e9lasticit\u00e9 de l&rsquo;acier inoxydable aust\u00e9nitique<\/h3>\n<p>La limite d&rsquo;\u00e9lasticit\u00e9 de l&rsquo;acier inoxydable aust\u00e9nitique\u00a0<strong>\u00a0<\/strong>est de 145 MPa.<\/p>\n<h3>Module de Young de l&rsquo;acier inoxydable aust\u00e9nitique<\/h3>\n<p>Le module de Young de l&rsquo;acier inoxydable aust\u00e9nitique est de 45 GPa.<\/p>\n<h3>Duret\u00e9 de l&rsquo;acier inoxydable aust\u00e9nitique<\/h3>\n<p>En science des mat\u00e9riaux, la\u00a0\u00a0<a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/materials-science\/material-properties\/hardness\/\"><strong>duret\u00e9<\/strong><\/a>\u00a0\u00a0est la capacit\u00e9 \u00e0 r\u00e9sister \u00e0\u00a0\u00a0<strong>l&rsquo;indentation de surface<\/strong> \u00a0(<strong>d\u00e9formation plastique localis\u00e9e<\/strong>) et\u00a0 aux\u00a0<strong>rayures<\/strong>.\u00a0<a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/materials-science\/material-properties\/hardness\/brinell-hardness-test\/\"><strong>Le test de duret\u00e9 Brinell<\/strong><\/a>\u00a0est l&rsquo;un des tests de duret\u00e9 par indentation, qui a \u00e9t\u00e9 d\u00e9velopp\u00e9 pour les tests de duret\u00e9.\u00a0Dans les tests Brinell, un\u00a0\u00a0<strong>p\u00e9n\u00e9trateur sph\u00e9rique<\/strong>\u00a0dur est forc\u00e9 sous une charge sp\u00e9cifique dans la surface du m\u00e9tal \u00e0 tester.<\/p>\n<p>L&rsquo; indice de <strong>duret\u00e9 Brinell<\/strong>\u00a0(HB) est la charge divis\u00e9e par la surface de l&rsquo;indentation.\u00a0Le diam\u00e8tre de l&#8217;empreinte est mesur\u00e9 avec un microscope \u00e0 \u00e9chelle superpos\u00e9e.\u00a0Le nombre de duret\u00e9 Brinell est calcul\u00e9 \u00e0 partir de l&rsquo;\u00e9quation:<\/p>\n<p><a href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/01\/brinell-hardness-number-definition.png\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-90675\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/01\/brinell-hardness-number-definition.png\" sizes=\"(max-width: 320px) 100vw, 320px\" srcset=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/01\/brinell-hardness-number-definition.png 320w, https:\/\/material-properties.org\/wp-content\/uploads\/2020\/01\/brinell-hardness-number-definition-300x178.png 300w\" alt=\"indice de duret\u00e9 Brinell - d\u00e9finition\" width=\"320\" height=\"190\" \/><\/a><\/p>\n<p>La duret\u00e9 Brinell de l&rsquo;acier inoxydable aust\u00e9nitique est d&rsquo;environ 70 BHN (converti).<\/p>\n<p>Voir aussi: <a href=\"https:\/\/material-properties.org\/what-is-hardness-definition\/\">Duret\u00e9 des mat\u00e9riaux<\/a><\/p>\n<h3>Exemple: Force<\/h3>\n<p>Supposons une tige en plastique, qui est faite d&rsquo;acier inoxydable aust\u00e9nitique.\u00a0Cette tige en plastique a une section transversale de 1 cm\u00a0<sup>2<\/sup>\u00a0.\u00a0Calculez la force de traction n\u00e9cessaire pour atteindre la r\u00e9sistance ultime \u00e0 la traction de ce mat\u00e9riau, soit : UTS = 280 MPa.<\/p>\n<p>Solution:<\/p>\n<p><strong>La contrainte (\u03c3)<\/strong> peut \u00eatre assimil\u00e9e \u00e0 la charge par unit\u00e9 de surface ou \u00e0 la force (F) appliqu\u00e9e par section transversale (A) perpendiculaire \u00e0 la force comme suit:<\/p>\n<p><a href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/05\/strength-of-material-equation.png\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-109284 size-medium\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/05\/strength-of-material-equation-300x184.png\" alt=\"r\u00e9sistance du mat\u00e9riau - \u00e9quation\" width=\"300\" height=\"184\" srcset=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/05\/strength-of-material-equation-300x184.png 300w, https:\/\/material-properties.org\/wp-content\/uploads\/2021\/05\/strength-of-material-equation.png 380w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>par cons\u00e9quent, la force de traction n\u00e9cessaire pour atteindre la r\u00e9sistance \u00e0 la traction ultime est:<\/p>\n<p><strong>F<\/strong>\u00a0= UTS x A = 280 x 10\u00a0<sup>6<\/sup>\u00a0x 0,0001 =\u00a0<strong>28 000 N<\/strong><\/p>\n<div class=\"su-divider su-divider-style-dotted\" style=\"margin:25px 0;border-width:3px;border-color:#999999\"><\/div> <div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<h3 style=\"text-align: center;\">La r\u00e9sistance des mat\u00e9riaux<\/h3>\n<p><a href=\"https:\/\/material-properties.org\/strength-of-materials-tensile-yield\/\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-108070 size-medium\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/02\/Material-Table-Strength-of-Materials-300x182.png\" alt=\"Tableau des mat\u00e9riaux - R\u00e9sistance des mat\u00e9riaux\" width=\"300\" height=\"182\" \/><\/a><\/p><\/div><\/div> <div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<h3 style=\"text-align: center;\">\u00c9lasticit\u00e9 des mat\u00e9riaux<\/h3>\n<p><a href=\"https:\/\/material-properties.org\/elasticity-of-materials\/\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-108080 size-medium\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/02\/Material-Table-Elasticity-of-Materials-300x185.png\" alt=\"Tableau des mat\u00e9riaux - \u00c9lasticit\u00e9 des mat\u00e9riaux\" width=\"300\" height=\"185\" \/><\/a><\/p><\/div><\/div> <div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<h3 style=\"text-align: center;\">Duret\u00e9 des mat\u00e9riaux<\/h3>\n<p><a href=\"https:\/\/material-properties.org\/hardness-of-materials-brinell-mohs\/\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-108085 size-medium\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/02\/Material-Table-Hardness-of-Materials-300x182.png\" alt=\"Tableau des mat\u00e9riaux - Duret\u00e9 des mat\u00e9riaux\" width=\"300\" height=\"182\" \/><\/a>\u00a0 <\/p><\/div><\/div> <div class=\"su-divider su-divider-style-dotted\" style=\"margin:25px 0;border-width:3px;border-color:#999999\"><\/div>\n<h2>Propri\u00e9t\u00e9s thermiques de l&rsquo;acier inoxydable aust\u00e9nitique<\/h2>\n<h3>Acier inoxydable aust\u00e9nitique &#8211; Point de fusion<\/h3>\n<p><strong>Le point de fusion de l&rsquo;acier inoxydable aust\u00e9nitique est de 550 \u00e0 640\u00a0<\/strong><strong>\u00b0C<\/strong>.<\/p>\n<p>Notez que ces points sont associ\u00e9s \u00e0 la pression atmosph\u00e9rique standard.\u00a0En g\u00e9n\u00e9ral, la\u00a0\u00a0<strong>fusion<\/strong> est un\u00a0<strong>changement de phase<\/strong> d&rsquo;une substance de la phase solide \u00e0 la phase liquide.\u00a0Le\u00a0\u00a0<strong>point de fusion<\/strong> \u00a0d&rsquo;une substance est la temp\u00e9rature \u00e0 laquelle ce changement de phase se produit.\u00a0Le\u00a0<strong>point de fusion <\/strong>d\u00e9finit \u00e9galement une condition dans laquelle le solide et le liquide peuvent exister en \u00e9quilibre.\u00a0Pour divers compos\u00e9s chimiques et alliages, il est difficile de d\u00e9finir le point de fusion, car il s&rsquo;agit g\u00e9n\u00e9ralement d&rsquo;un m\u00e9lange de divers \u00e9l\u00e9ments chimiques.<\/p>\n<h3>Acier inoxydable aust\u00e9nitique &#8211; Conductivit\u00e9 thermique<\/h3>\n<p>La conductibilit\u00e9 thermique de l&rsquo;acier inoxydable aust\u00e9nitique est de <strong>116\u00a0<\/strong><strong>W\/(m\u00b7K)<\/strong>.<\/p>\n<p>Les caract\u00e9ristiques de transfert de chaleur d&rsquo;un mat\u00e9riau solide sont mesur\u00e9es par une propri\u00e9t\u00e9 appel\u00e9e la <strong>conductibilit\u00e9 thermique<\/strong>, k (ou \u03bb), mesur\u00e9e en\u00a0\u00a0<strong>W\/mK<\/strong>.\u00a0C&rsquo;est une mesure de la capacit\u00e9 d&rsquo;une substance \u00e0 transf\u00e9rer de la chaleur \u00e0 travers un mat\u00e9riau par\u00a0\u00a0<a href=\"https:\/\/www.thermal-engineering.org\/what-is-thermal-conduction-heat-conduction-definition\/\">conduction<\/a>.\u00a0Notez que\u00a0\u00a0<a href=\"https:\/\/www.thermal-engineering.org\/what-is-fouriers-law-of-thermal-conduction-definition\/\"><strong>la loi de Fourier<\/strong><\/a>\u00a0\u00a0s&rsquo;applique \u00e0 toute mati\u00e8re, quel que soit son \u00e9tat (solide, liquide ou gazeux), par cons\u00e9quent, elle est \u00e9galement d\u00e9finie pour les liquides et les gaz.<\/p>\n<p>La <a href=\"https:\/\/www.thermal-engineering.org\/what-is-thermal-conductivity-definition\/\"><strong>conductibilit\u00e9 thermique<\/strong><\/a> de la plupart des liquides et des solides varie avec la temp\u00e9rature. Pour les vapeurs, cela d\u00e9pend aussi de la pression. En g\u00e9n\u00e9ral:<\/p>\n<p><a href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2019\/05\/thermal-conductivity-definition.png\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-88791\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2019\/05\/thermal-conductivity-definition.png\" alt=\"conductivit\u00e9 thermique - d\u00e9finition\" width=\"225\" height=\"75\" \/><\/a><\/p>\n<p>La plupart des mat\u00e9riaux sont presque homog\u00e8nes, nous pouvons donc g\u00e9n\u00e9ralement \u00e9crire\u00a0\u00a0<strong><em>k = k (T)<\/em><\/strong>.\u00a0Des d\u00e9finitions similaires sont associ\u00e9es aux conductivit\u00e9s thermiques dans les directions y et z (ky, kz), mais pour un mat\u00e9riau isotrope, la conductivit\u00e9 thermique est ind\u00e9pendante de la direction de transfert, kx = ky = kz = k.<\/p>\n<h3>Acier inoxydable aust\u00e9nitique &#8211; Chaleur sp\u00e9cifique<\/h3>\n<p><strong>La chaleur sp\u00e9cifique de l&rsquo;acier inoxydable aust\u00e9nitique\u00a0<\/strong><strong>est de 900\u00a0<\/strong><strong> J\/g K<\/strong>.<\/p>\n<p><strong>La chaleur sp\u00e9cifique, ou capacit\u00e9 thermique sp\u00e9cifique, <\/strong>est une propri\u00e9t\u00e9 li\u00e9e \u00e0\u00a0<strong><a href=\"https:\/\/www.thermal-engineering.org\/what-is-internal-energy-thermal-energy-definition\/\">l&rsquo;\u00e9nergie interne<\/a><\/strong>\u00a0\u00a0tr\u00e8s importante en thermodynamique.\u00a0Les\u00a0\u00a0<strong>propri\u00e9t\u00e9s intensives <\/strong><strong><em>c<\/em><\/strong><strong><em><sub>v<\/sub><\/em><\/strong> et\u00a0<strong><em>c<\/em><\/strong><strong><em><sub>p<\/sub><\/em><\/strong> sont d\u00e9finies pour des substances compressibles pures et simples comme des d\u00e9riv\u00e9es partielles de l&rsquo;\u00a0\u00a0<strong>\u00e9nergie interne\u00a0\u00a0<\/strong><strong><em>u(T, v)<\/em><\/strong>\u00a0\u00a0et de\u00a0 l&rsquo;\u00a0<strong>enthalpie\u00a0\u00a0<\/strong><strong><em>h(T, p)<\/em><\/strong>, respectivement:<strong>\u00a0<\/strong><\/p>\n<p><a href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2019\/05\/Specific-Heat-at-Constant-Volume-and-Constant-Pressure.png\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-87687\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2019\/05\/Specific-Heat-at-Constant-Volume-and-Constant-Pressure.png\" alt=\"\" width=\"106\" height=\"138\" \/><\/a><\/p>\n<p>o\u00f9 les indices\u00a0\u00a0<strong>v<\/strong> et <strong>p<\/strong> d\u00e9signent les variables maintenues fixes lors de la diff\u00e9renciation. Les propri\u00e9t\u00e9s\u00a0<strong>c<sub>v<\/sub><\/strong>\u00a0et\u00a0<strong>c<sub>p<\/sub><\/strong> sont appel\u00e9es <strong>chaleurs sp\u00e9cifiques\u00a0<\/strong>\u00a0(ou\u00a0\u00a0<strong>capacit\u00e9s calorifiques<\/strong>\u00a0) car, dans certaines conditions particuli\u00e8res, elles relient le changement de temp\u00e9rature d&rsquo;un syst\u00e8me \u00e0 la quantit\u00e9 d&rsquo;\u00e9nergie ajout\u00e9e par transfert de chaleur.\u00a0Leurs unit\u00e9s SI sont\u00a0\u00a0<strong>J\/kg K<\/strong>\u00a0\u00a0ou\u00a0\u00a0<strong>J\/mol K<\/strong>.<\/p>\n<div class=\"su-divider su-divider-style-dotted\" style=\"margin:25px 0;border-width:3px;border-color:#999999\"><\/div> <div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<h3 style=\"text-align: center;\">Point de fusion des mat\u00e9riaux<\/h3>\n<p><a href=\"https:\/\/material-properties.org\/melting-point-of-materials\/\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-108050 size-medium\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/02\/Material-Table-Metling-Point-300x183.png\" alt=\"Tableau des mat\u00e9riaux - Point de fusion\" width=\"300\" height=\"183\" \/><\/a><\/p><\/div><\/div> <div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<h3 style=\"text-align: center;\">Conductivit\u00e9 thermique des mat\u00e9riaux<\/h3>\n<p><a href=\"https:\/\/material-properties.org\/thermal-conductivity-of-materials\/\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-108055 size-medium\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/02\/Material-Table-Thermal-Conductivity-300x180.png\" alt=\"Tableau des mat\u00e9riaux - Conductivit\u00e9 thermique\" width=\"300\" height=\"180\" \/><\/a><\/p><\/div><\/div> <div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<h3 style=\"text-align: center;\">Capacit\u00e9 calorifique des mat\u00e9riaux<\/h3>\n<p><a href=\"https:\/\/material-properties.org\/heat-capacity-of-materials\/\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-108063 size-medium\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/02\/Material-Table-Heat-Capacity-300x179.png\" alt=\"Tableau des mat\u00e9riaux - Capacit\u00e9 calorifique\" width=\"300\" height=\"179\" \/><\/a><\/p>\n<h3 style=\"text-align: center;\"><\/h3>\n<\/div><\/div> <div class=\"su-divider su-divider-style-dotted\" style=\"margin:25px 0;border-width:3px;border-color:#999999\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u00c0 propos de l&rsquo;acier inoxydable aust\u00e9nitique &#8211; Type 304 L&rsquo;acier inoxydable de type 304\u00a0(contenant 18\u00a0% \u00e0 20\u00a0% de chrome et 8\u00a0% \u00e0 10,5\u00a0% de nickel) est l&rsquo;acier inoxydable le plus courant.\u00a0Il est \u00e9galement appel\u00e9 acier\u00a0inoxydable \u00ab\u00a018\/8 \u00bb en raison de sa composition qui comprend 18 % de chrome et 8 % de nickel.\u00a0Cet alliage r\u00e9siste &#8230; <a title=\"Acier inoxydable aust\u00e9nitique &#8211; Densit\u00e9 &#8211; R\u00e9sistance &#8211; Duret\u00e9 &#8211; Point de fusion\" class=\"read-more\" href=\"https:\/\/material-properties.org\/fr\/acier-inoxydable-austenitique-densite-resistance-durete-point-de-fusion\/\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Acier inoxydable aust\u00e9nitique | Densit\u00e9, r\u00e9sistance, duret\u00e9, point de fusion<\/title>\n<meta name=\"description\" content=\"L&#039;acier inoxydable aust\u00e9nitique contient entre 16 et 25 % de chrome et peut \u00e9galement contenir de l&#039;azote en solution, ce qui contribue \u00e0 sa r\u00e9sistance relativement \u00e9lev\u00e9e \u00e0 la corrosion.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/material-properties.org\/fr\/acier-inoxydable-austenitique-densite-resistance-durete-point-de-fusion\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Acier inoxydable aust\u00e9nitique | Densit\u00e9, r\u00e9sistance, duret\u00e9, point de fusion\" \/>\n<meta property=\"og:description\" content=\"L&#039;acier inoxydable aust\u00e9nitique contient entre 16 et 25 % de chrome et peut \u00e9galement contenir de l&#039;azote en solution, ce qui contribue \u00e0 sa r\u00e9sistance relativement \u00e9lev\u00e9e \u00e0 la corrosion.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/material-properties.org\/fr\/acier-inoxydable-austenitique-densite-resistance-durete-point-de-fusion\/\" \/>\n<meta property=\"og:site_name\" content=\"Material Properties\" \/>\n<meta property=\"article:published_time\" content=\"2022-02-02T08:35:30+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-03-07T07:55:53+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/03\/austenitic-steel-properties-density-strength-price.png\" \/>\n<meta name=\"author\" content=\"Nick Connor\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Nick Connor\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"9 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/material-properties.org\/fr\/acier-inoxydable-austenitique-densite-resistance-durete-point-de-fusion\/\",\"url\":\"https:\/\/material-properties.org\/fr\/acier-inoxydable-austenitique-densite-resistance-durete-point-de-fusion\/\",\"name\":\"Acier inoxydable aust\u00e9nitique | Densit\u00e9, r\u00e9sistance, duret\u00e9, point de fusion\",\"isPartOf\":{\"@id\":\"https:\/\/material-properties.org\/fr\/#website\"},\"datePublished\":\"2022-02-02T08:35:30+00:00\",\"dateModified\":\"2022-03-07T07:55:53+00:00\",\"author\":{\"@id\":\"https:\/\/material-properties.org\/fr\/#\/schema\/person\/e8c544db9afedaec8574d6464f9398bb\"},\"description\":\"L'acier inoxydable aust\u00e9nitique contient entre 16 et 25 % de chrome et peut \u00e9galement contenir de l'azote en solution, ce qui contribue \u00e0 sa r\u00e9sistance relativement \u00e9lev\u00e9e \u00e0 la corrosion.\",\"breadcrumb\":{\"@id\":\"https:\/\/material-properties.org\/fr\/acier-inoxydable-austenitique-densite-resistance-durete-point-de-fusion\/#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/material-properties.org\/fr\/acier-inoxydable-austenitique-densite-resistance-durete-point-de-fusion\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/material-properties.org\/fr\/acier-inoxydable-austenitique-densite-resistance-durete-point-de-fusion\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Dom\u016f\",\"item\":\"https:\/\/material-properties.org\/fr\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Acier inoxydable aust\u00e9nitique &#8211; 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