{"id":2552,"date":"2025-09-18T00:55:12","date_gmt":"2025-09-18T00:55:12","guid":{"rendered":"https:\/\/greenyellow-gerbil-196913.hostingersite.com\/?post_type=product&p=2552"},"modified":"2025-09-18T01:03:45","modified_gmt":"2025-09-18T01:03:45","slug":"pressure-vessel-steel-billet-q345b","status":"publish","type":"product","link":"https:\/\/baosteelmaterials.com\/fr\/produit\/pressure-vessel-steel-billet-q345b\/","title":{"rendered":"Acier pour appareils \u00e0 pression Billet Q345B"},"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
Param\u00e8tres<\/th>\nValeur<\/th>\nRemarques<\/th>\n<\/tr>\n<\/thead>\n
Standard<\/strong><\/td>\nGB\/T 1591-2008<\/td>\nNorme sur les aciers de construction \u00e0 haute r\u00e9sistance faiblement alli\u00e9s applicable ici<\/td>\n<\/tr>\n
Grade<\/strong><\/td>\nQ345B<\/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>\nPour assurer une bonne soudabilit\u00e9 et \u00e9viter un durcissement excessif pendant le traitement thermique<\/td>\n<\/tr>\n
- Silicium (Si)<\/td>\n\u22640.55<\/td>\nContribue \u00e0 la d\u00e9soxydation et affecte la r\u00e9sistance et la t\u00e9nacit\u00e9 dans une certaine mesure.<\/td>\n<\/tr>\n
- Mangan\u00e8se (Mn)<\/td>\n\u22641.70<\/td>\nContribue \u00e0 augmenter la r\u00e9sistance et \u00e0 am\u00e9liorer la t\u00e9nacit\u00e9<\/td>\n<\/tr>\n
- Phosphore (P)<\/td>\n\u22640.040<\/td>\nMaintenu \u00e0 un niveau bas pour \u00e9viter la fragilisation et garantir de bonnes performances dans des conditions de pression.<\/td>\n<\/tr>\n
- Soufre (S)<\/td>\n\u22640.040<\/td>\nLa faible teneur en soufre est cruciale pour une bonne formabilit\u00e9 et soudabilit\u00e9.<\/td>\n<\/tr>\n
- Niobium (Nb)<\/td>\n\u22640.07<\/td>\n\u00c9l\u00e9ment de microalliage pour l'affinement du grain et l'am\u00e9lioration des propri\u00e9t\u00e9s m\u00e9caniques<\/td>\n<\/tr>\n
- Vanadium (V)<\/td>\n\u22640.15<\/td>\nPeut renforcer les propri\u00e9t\u00e9s de solidit\u00e9 et de r\u00e9sistance \u00e0 la chaleur<\/td>\n<\/tr>\n
- Titane (Ti)<\/td>\n\u22640.20<\/td>\nContribue \u00e0 am\u00e9liorer la t\u00e9nacit\u00e9 et la stabilit\u00e9 structurelle<\/td>\n<\/tr>\n
- Azote (N)<\/td>\n\u22640.012<\/td>\nContr\u00f4l\u00e9 pour \u00e9viter la fragilisation induite par l'azote<\/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\u2265345 MPa<\/td>\nPour une \u00e9paisseur \u226416mm ; un param\u00e8tre important pour r\u00e9sister \u00e0 la pression interne dans les appareils \u00e0 pression.<\/td>\n<\/tr>\n
- R\u00e9sistance \u00e0 la traction (Rm)<\/td>\n470-630 MPa<\/td>\nAssurer l'int\u00e9grit\u00e9 structurelle globale de l'appareil sous pression dans diverses conditions de charge.<\/td>\n<\/tr>\n
- Allongement (A)<\/td>\n\u226521%<\/td>\nFournit la ductilit\u00e9 n\u00e9cessaire pour faire face aux d\u00e9formations possibles pendant le fonctionnement ou les changements de pression.<\/td>\n<\/tr>\n
- \u00c9nergie d'impact (Akv)<\/td>\n\u226534 J<\/td>\n\u00c0 20\u2103 (\u00e9chantillon longitudinal), crucial pour r\u00e9sister \u00e0 un impact soudain et \u00e9viter une fracture fragile.<\/td>\n<\/tr>\n
- Essai de flexion<\/td>\n180\u00b0<\/td>\nDiam\u00e8tre de courbure : 2a pour \u226416mm ; 3a pour >16mm (o\u00f9 \"a\" repr\u00e9sente l'\u00e9paisseur ou la dimension pertinente), important pour les processus de fabrication.<\/td>\n<\/tr>\n
Conditions de livraison<\/strong><\/td>\nLamin\u00e9s \u00e0 chaud, normalis\u00e9s, normalis\u00e9s + tremp\u00e9s, TMCP (Thermo-Mechanical Control Process)<\/td>\nSur la base des exigences sp\u00e9cifiques de fabrication et d'utilisation des appareils \u00e0 pression<\/td>\n<\/tr>\n
Applications typiques<\/strong><\/td>\nFabrication de divers r\u00e9cipients sous pression tels que des r\u00e9servoirs de stockage de gaz et de liquides, des chaudi\u00e8res et d'autres \u00e9quipements soumis \u00e0 une pression interne en milieu industriel.<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>","protected":false},"excerpt":{"rendered":"

Cet acier pour appareils \u00e0 pression Q345B est con\u00e7u pour r\u00e9pondre aux exigences strictes de la fabrication d'appareils \u00e0 pression gr\u00e2ce \u00e0 sa composition chimique \u00e9quilibr\u00e9e et \u00e0 ses propri\u00e9t\u00e9s m\u00e9caniques fiables, garantissant ainsi la s\u00e9curit\u00e9 et la durabilit\u00e9 dans les applications o\u00f9 le maintien de la pression est une pr\u00e9occupation majeure.<\/p>","protected":false},"featured_media":2532,"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":"","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-2552","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\/2552","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=2552"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/baosteelmaterials.com\/fr\/wp-json\/wp\/v2\/media\/2532"}],"wp:attachment":[{"href":"https:\/\/baosteelmaterials.com\/fr\/wp-json\/wp\/v2\/media?parent=2552"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/baosteelmaterials.com\/fr\/wp-json\/wp\/v2\/product_brand?post=2552"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/baosteelmaterials.com\/fr\/wp-json\/wp\/v2\/product_cat?post=2552"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/baosteelmaterials.com\/fr\/wp-json\/wp\/v2\/product_tag?post=2552"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}