{"id":2550,"date":"2025-09-18T00:55:09","date_gmt":"2025-09-18T00:55:09","guid":{"rendered":"https:\/\/greenyellow-gerbil-196913.hostingersite.com\/?post_type=product&p=2550"},"modified":"2025-09-18T00:59:31","modified_gmt":"2025-09-18T00:59:31","slug":"low-alloy-high-strength-billet-q390b","status":"publish","type":"product","link":"https:\/\/baosteelmaterials.com\/fr\/produit\/low-alloy-high-strength-billet-q390b\/","title":{"rendered":"Billet \u00e0 haute r\u00e9sistance faiblement alli\u00e9 Q390B"},"content":{"rendered":"\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Param\u00e8tres<\/th>\nValeur<\/th>\nRemarques<\/th>\n<\/tr>\n<\/thead>\n
Standard<\/strong><\/td>\nGB\/T 1591-2008<\/td>\nSp\u00e9cification pour les aciers de construction \u00e0 haute r\u00e9sistance faiblement alli\u00e9s<\/td>\n<\/tr>\n
Grade<\/strong><\/td>\nQ390B<\/td>\nImpact test\u00e9 \u00e0 20\u2103<\/td>\n<\/tr>\n
Composition chimique (wt%)<\/strong><\/td>\n<\/td>\n<\/td>\n<\/tr>\n
- Carbone (C)<\/td>\n\u22640.20<\/td>\n<\/td>\n<\/tr>\n
- Silicium (Si)<\/td>\n\u22640.55<\/td>\n<\/td>\n<\/tr>\n
- Mangan\u00e8se (Mn)<\/td>\n\u22641.70<\/td>\n<\/td>\n<\/tr>\n
- Phosphore (P)<\/td>\n\u22640.040<\/td>\n<\/td>\n<\/tr>\n
- Soufre (S)<\/td>\n\u22640.040<\/td>\n<\/td>\n<\/tr>\n
- Niobium (Nb)<\/td>\n\u22640.07<\/td>\n\u00c9l\u00e9ment de microalliage pour am\u00e9liorer les propri\u00e9t\u00e9s<\/td>\n<\/tr>\n
- Vanadium (V)<\/td>\n\u22640.20<\/td>\n<\/td>\n<\/tr>\n
- Titane (Ti)<\/td>\n\u22640.20<\/td>\n<\/td>\n<\/tr>\n
- Aluminium (Al)<\/td>\n\u22650.015<\/td>\n\u00c0 des fins de d\u00e9soxydation<\/td>\n<\/tr>\n
- Azote (N)<\/td>\n\u22640.015<\/td>\n<\/td>\n<\/tr>\n
Propri\u00e9t\u00e9s m\u00e9caniques<\/strong><\/td>\n<\/td>\n<\/td>\n<\/tr>\n
- Limite d'\u00e9lasticit\u00e9 (ReL)<\/td>\n\u2265390 MPa<\/td>\nPour une \u00e9paisseur \u226416mm ; pour les \u00e9paisseurs sup\u00e9rieures, les valeurs sp\u00e9cifiques varient en cons\u00e9quence.<\/td>\n<\/tr>\n
- R\u00e9sistance \u00e0 la traction (Rm)<\/td>\n490 - 650 MPa<\/td>\n<\/td>\n<\/tr>\n
- Allongement (A)<\/td>\n\u226520%<\/td>\n<\/td>\n<\/tr>\n
- \u00c9nergie d'impact (Akv)<\/td>\n\u226534 J<\/td>\nA 20\u2103, avec des \u00e9chantillons longitudinaux<\/td>\n<\/tr>\n
- Essai de flexion<\/td>\n180\u00b0<\/td>\nDiam\u00e8tre de pliage : 2a pour \u226416mm ; 3a pour >16mm (o\u00f9 'a' repr\u00e9sente l'\u00e9paisseur de la billette)<\/td>\n<\/tr>\n
Conditions de livraison<\/strong><\/td>\nLamin\u00e9s \u00e0 chaud, normalis\u00e9s, normalis\u00e9s + tremp\u00e9s, TMCP (Thermo-Mechanical Control Process), etc.<\/td>\nSelon les exigences sp\u00e9cifiques du client<\/td>\n<\/tr>\n
Applications typiques<\/strong><\/td>\nUtilis\u00e9 dans la construction de ponts, d'immeubles de grande hauteur, de ch\u00e2ssis de machines lourdes et d'autres structures exigeant une r\u00e9sistance \u00e9lev\u00e9e et une bonne t\u00e9nacit\u00e9.<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>","protected":false},"excerpt":{"rendered":"

Le Q390B Low Alloy High Strength Billet est un remarquable mat\u00e9riau de construction en acier qui se distingue dans les secteurs de la construction et de l'ing\u00e9nierie. Conforme \u00e0 la norme GB\/T 1591-2008, il offre une s\u00e9rie d'excellentes caract\u00e9ristiques qui le rendent tr\u00e8s recherch\u00e9 pour une grande vari\u00e9t\u00e9 de projets exigeant r\u00e9sistance, durabilit\u00e9 et fiabilit\u00e9.<\/p>","protected":false},"featured_media":2523,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","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":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"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":""},"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":""}}},"product_brand":[],"product_cat":[26],"product_tag":[],"class_list":["post-2550","product","type-product","status-publish","has-post-thumbnail","product_cat-specialty-billets","desktop-align-left","tablet-align-left","mobile-align-left","first","instock","shipping-taxable","product-type-simple"],"acf":[],"_links":{"self":[{"href":"https:\/\/baosteelmaterials.com\/fr\/wp-json\/wp\/v2\/product\/2550","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/baosteelmaterials.com\/fr\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/baosteelmaterials.com\/fr\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/baosteelmaterials.com\/fr\/wp-json\/wp\/v2\/comments?post=2550"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/baosteelmaterials.com\/fr\/wp-json\/wp\/v2\/media\/2523"}],"wp:attachment":[{"href":"https:\/\/baosteelmaterials.com\/fr\/wp-json\/wp\/v2\/media?parent=2550"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/baosteelmaterials.com\/fr\/wp-json\/wp\/v2\/product_brand?post=2550"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/baosteelmaterials.com\/fr\/wp-json\/wp\/v2\/product_cat?post=2550"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/baosteelmaterials.com\/fr\/wp-json\/wp\/v2\/product_tag?post=2550"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}