{"id":7801,"date":"2025-02-09T06:48:28","date_gmt":"2025-02-09T06:48:28","guid":{"rendered":"https:\/\/premiumalu.com\/?post_type=product&#038;p=7801"},"modified":"2026-07-08T15:01:15","modified_gmt":"2026-07-08T15:01:15","slug":"alliage-daluminium-5251","status":"publish","type":"product","link":"https:\/\/premiumalu.com\/fr\/produit\/alliage-daluminium-5251\/","title":{"rendered":"Alliage d'aluminium 5251"},"content":{"rendered":"<h2>What Is 5251 Aluminum Alloy Aluminum?<\/h2>\n<p>5251 Aluminum Alloy (AlMg2) is a non-heat-treatable aluminum-magnesium (5xxx) alloy. Its strength comes from magnesium in solid solution and strain hardening, not heat treatment. It offers good corrosion resistance\u2014especially in marine and industrial environments\u2014and welds well, which makes it a common choice for structures exposed to water, chemicals, or cycling loads.<\/p>\n<h2>Available 5251 Aluminum Alloy Aluminum Products<\/h2>\n<p>5251 Aluminum Alloy is supplied in several forms and tempers. Standard size ranges are below; other dimensions can be discussed with our team.<\/p>\n<h3>T\u00f4le et plaque<\/h3>\n<table>\n<tbody>\n<tr>\n<th>\u00c9l\u00e9ment<\/th>\n<th>Plage<\/th>\n<\/tr>\n<tr>\n<td>\u00c9paisseur<\/td>\n<td>0.5 \u2013 150 mm<\/td>\n<\/tr>\n<tr>\n<td>Largeur<\/td>\n<td>1000 \u2013 3000 mm<\/td>\n<\/tr>\n<tr>\n<td>Longueur<\/td>\n<td>1000 \u2013 6000 mm<\/td>\n<\/tr>\n<tr>\n<td>\u00c9tats courants<\/td>\n<td>O, H22, H24, H32, H34, H38<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Bar (Round \/ Flat \/ Square)<\/h3>\n<table>\n<tbody>\n<tr>\n<th>\u00c9l\u00e9ment<\/th>\n<th>Plage<\/th>\n<\/tr>\n<tr>\n<td>Diameter \/ side<\/td>\n<td>6 \u2013 400 mm<\/td>\n<\/tr>\n<tr>\n<td>Longueur<\/td>\n<td>1000 \u2013 6000 mm<\/td>\n<\/tr>\n<tr>\n<td>\u00c9tats courants<\/td>\n<td>O, H22, H24, H32, H34, H38<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Tube &amp; Pipe<\/h3>\n<table>\n<tbody>\n<tr>\n<th>\u00c9l\u00e9ment<\/th>\n<th>Plage<\/th>\n<\/tr>\n<tr>\n<td>Diam\u00e8tre ext\u00e9rieur<\/td>\n<td>6 \u2013 400 mm<\/td>\n<\/tr>\n<tr>\n<td>Wall thickness<\/td>\n<td>0.5 \u2013 40 mm<\/td>\n<\/tr>\n<tr>\n<td>Longueur<\/td>\n<td>1000 \u2013 6000 mm<\/td>\n<\/tr>\n<tr>\n<td>\u00c9tats courants<\/td>\n<td>O, H22, H24, H32, H34, H38<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Wire &amp; Coil<\/h3>\n<table>\n<tbody>\n<tr>\n<th>\u00c9l\u00e9ment<\/th>\n<th>Plage<\/th>\n<\/tr>\n<tr>\n<td>Diam\u00e8tre<\/td>\n<td>0.8 \u2013 12 mm<\/td>\n<\/tr>\n<tr>\n<td>Poids de la bobine<\/td>\n<td>10 \u2013 500 kg<\/td>\n<\/tr>\n<tr>\n<td>Size tolerance<\/td>\n<td>\u00b1 0.05 mm<\/td>\n<\/tr>\n<tr>\n<td>\u00c9tats courants<\/td>\n<td>O, H22, H24, H32, H34, H38<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Sp\u00e9cifications et d\u00e9signations \u00e9quivalentes<\/h2>\n<table>\n<tbody>\n<tr>\n<th>Standard<\/th>\n<th>D\u00e9signation<\/th>\n<\/tr>\n<tr>\n<td>AA (USA)<\/td>\n<td>Alliage d'aluminium 5251<\/td>\n<\/tr>\n<tr>\n<td>EN AW<\/td>\n<td>AlMg2<\/td>\n<\/tr>\n<tr>\n<td>S\u00e9rie<\/td>\n<td>5000 (Al-Mg, non-heat-treatable)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Composition chimique<\/h2>\n<table>\n<tbody>\n<tr>\n<th>\u00c9l\u00e9ment<\/th>\n<th>Poids %<\/th>\n<\/tr>\n<tr>\n<td>Si<\/td>\n<td>0,40 max<\/td>\n<\/tr>\n<tr>\n<td>Fe<\/td>\n<td>0,50 max<\/td>\n<\/tr>\n<tr>\n<td>Cu<\/td>\n<td>0,15 max<\/td>\n<\/tr>\n<tr>\n<td>Mn<\/td>\n<td>0.10 \u2013 0.50<\/td>\n<\/tr>\n<tr>\n<td>Mg<\/td>\n<td>1.7 \u2013 2.4<\/td>\n<\/tr>\n<tr>\n<td>Cr<\/td>\n<td>0,30 max<\/td>\n<\/tr>\n<tr>\n<td>Zn<\/td>\n<td>0,20 max<\/td>\n<\/tr>\n<tr>\n<td>Ti<\/td>\n<td>0,20 max<\/td>\n<\/tr>\n<tr>\n<td>Al<\/td>\n<td>\u00c9quilibre<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Values are typical AA composition ranges; confirm against the ordered specification and the supplied MTC.<\/p>\n<h2>Propri\u00e9t\u00e9s m\u00e9caniques selon le traitement thermique<\/h2>\n<table>\n<tbody>\n<tr>\n<th>Temp\u00e9rer<\/th>\n<th>R\u00e9sistance \u00e0 la traction (MPa)<\/th>\n<th>Limite d'\u00e9lasticit\u00e9 (MPa)<\/th>\n<th>\u00c9longation (%)<\/th>\n<th>Brinell<\/th>\n<\/tr>\n<tr>\n<td>O<\/td>\n<td>210<\/td>\n<td>90<\/td>\n<td>18<\/td>\n<td>55<\/td>\n<\/tr>\n<tr>\n<td>H22 \/ H32<\/td>\n<td>230<\/td>\n<td>130<\/td>\n<td>14<\/td>\n<td>60<\/td>\n<\/tr>\n<tr>\n<td>H24 \/ H34<\/td>\n<td>250<\/td>\n<td>160<\/td>\n<td>10<\/td>\n<td>65<\/td>\n<\/tr>\n<tr>\n<td>H38<\/td>\n<td>270<\/td>\n<td>200<\/td>\n<td>7<\/td>\n<td>70<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Mechanical values are representative room-temperature typicals for plate, sheet, or bar and should be confirmed against the ordered thickness and the supplied MTC.<\/p>\n<h2>Guide de s\u00e9lection des temp\u00e9raments<\/h2>\n<ul>\n<li><strong>O (recuit) :<\/strong> softest, best formability and corrosion resistance; for deep drawing and welding.<\/li>\n<li><strong>H1xx \/ H2xx \/ H3xx:<\/strong> strain-hardened tempers with increasing strength and decreasing ductility.<\/li>\n<li><strong>H116 \/ H321 :<\/strong> stabilized tempers for marine plate with good exfoliation-corrosion resistance.<\/li>\n<\/ul>\n<p>Choose the softest temper that meets the strength need to keep forming and welding straightforward.<\/p>\n<h2>Caract\u00e9ristiques principales<\/h2>\n<h3>R\u00e9sistance mod\u00e9r\u00e9e<\/h3>\n<p>A medium-strength 5xxx alloy with good all-round properties for general fabrication.<\/p>\n<h3>R\u00e9sistance \u00e0 la corrosion<\/h3>\n<p>Very good in marine and outdoor environments; suitable for boat and transport use.<\/p>\n<h3>Weldability and formability<\/h3>\n<p>Welds well and forms readily in softer tempers.<\/p>\n<h2>Applications<\/h2>\n<ul>\n<li>Boat hulls and marine components<\/li>\n<li>R\u00e9cipients sous pression<\/li>\n<li>Wall panels and cladding<\/li>\n<li>Cadres de v\u00e9hicules<\/li>\n<li>Road and transport signage<\/li>\n<\/ul>\n<h2>Remarques concernant le traitement et la finition de surface<\/h2>\n<p>5251 Aluminum Alloy is a non-heat-treatable 5xxx alloy, so strength comes from strain hardening (H-tempers), not heat treatment. It cuts, drills, and welds well with standard aluminum tooling.<\/p>\n<ul>\n<li><strong>D\u00e9coupe :<\/strong> CNC machining, laser cutting, and sawing are supported.<\/li>\n<li><strong>Soudage :<\/strong> TIG and MIG welding with matching or compatible 5xxx filler.<\/li>\n<li><strong>Formation :<\/strong> good cold formability in O and soft H-tempers.<\/li>\n<li><strong>Finition de surface :<\/strong> mill finish, anodizing, polishing, powder coating, or PVC film protection.<\/li>\n<\/ul>\n<p>Note: anodized color of 5xxx alloys can differ slightly from 6xxx alloys; confirm the finish on a sample if color match matters.<\/p>\n<h2>Documents relatifs \u00e0 la qualit\u00e9 et contr\u00f4le qualit\u00e9<\/h2>\n<p>Every 5086 order ships with a Mill Test Certificate (MTC) that reports the actual chemical analysis and mechanical results for the supplied material. Third-party SGS or equivalent test reports can be arranged on request for project or tender requirements.<\/p>\n<ul>\n<li>MTC (EN 10204 3.1 or 3.2) with every order<\/li>\n<li>Dimensional inspection against the agreed tolerance<\/li>\n<li>Surface and visual check before packing<\/li>\n<li>Material traceability by heat \/ lot number<\/li>\n<\/ul>\n<h2>Why Choose Linsy for 5251 Aluminum Alloy<\/h2>\n<p>Linsy Aluminum is a Shenzhen-based aluminum supplier with more than 20 years of experience serving marine, transport, and general engineering customers. We supply 1000\u20138000 series material in plate, bar, tube, wire, coil, profile, and block forms.<\/p>\n<ul>\n<li>ISO 9001, ISO 14001, and ISO 45001 certified management systems<\/li>\n<li>MTC with every order and SGS test reports available on request<\/li>\n<li>CNC machining, laser cutting, welding, and surface finishing support<\/li>\n<li>Typical custom lead time 10\u201360 days, with low minimum order quantities<\/li>\n<\/ul>\n<p>For a quote, share your alloy, temper, dimensions, quantity, and any certificate requirements.<\/p>\n<h2>Ressources connexes<\/h2>\n<ul>\n<li><a href=\"https:\/\/premiumalu.com\/fr\/tole-daluminium-5251-guide-essentiel-pour-les-acheteurs\/\">5251 Aluminum Buyer&#8217;s Guide<\/a><\/li>\n<li><a href=\"https:\/\/premiumalu.com\/fr\/produit\/alliage-daluminium-5052\/\">Alliage d'aluminium 5052<\/a><\/li>\n<li><a href=\"https:\/\/premiumalu.com\/fr\/produit\/alliage-daluminium-5083\/\">5083 Marine-Grade Aluminum<\/a><\/li>\n<li><a href=\"https:\/\/premiumalu.com\/fr\/produit\/alliage-daluminium-5251\/\">Aluminum Tempers Explained<\/a><\/li>\n<\/ul>\n<h2>5251 Aluminum Alloy Aluminum FAQ<\/h2>\n<h3>Is 5251 heat treatable?<\/h3>\n<p>No. 5251 is a non-heat-treatable 5xxx alloy; strength comes from magnesium and strain hardening.<\/p>\n<h3>What tempers are available for 5251?<\/h3>\n<p>O, H22, H24, H32, H34, and H38 are typical for sheet, bar, and tube.<\/p>\n<h3>5251 vs 5052?<\/h3>\n<p>Both are medium-strength 5xxx alloys with similar corrosion behavior. Choice often comes down to available temper, thickness, and local specification.<\/p>\n<h2>FAQ g\u00e9n\u00e9rale sur les commandes<\/h2>\n<h3>Quel est le d\u00e9lai de livraison habituel ?<\/h3>\n<p>Custom sizes are usually produced within 10\u201360 days depending on alloy, temper, and quantity. Confirm the schedule when you request a quote.<\/p>\n<h3>Fournissez-vous des certificats d'essai en usine ?<\/h3>\n<p>Yes. An MTC is provided with every order, and third-party test reports can be arranged on request.<\/p>\n<h3>Quelles sont les finitions de surface disponibles ?<\/h3>\n<p>Mill finish, anodizing, polishing, powder coating, and PVC film are available depending on the form.<\/p>\n<h3>Quelle est la quantit\u00e9 minimale de commande ?<\/h3>\n<p>We support low MOQs for custom requests. Share your required size and quantity for a quote.<\/p>","protected":false},"excerpt":{"rendered":"<p>5251 is a medium-strength aluminum-magnesium alloy (AlMg2) with very good corrosion resistance, especially in marine environments, and good weldability. It is supplied in sheet, plate, bar, tube, and wire across O, H22, H24, H32, H34, and H38 tempers for boats, panels, and transport use.<\/p>\n<p>\n<strong>Formulaires disponibles :<\/strong> sheet \/ plate \/ bar \/ tube \/ wire \/ coil<br \/>\n<strong>Temp\u00e9raments courants :<\/strong> O, H22, H24, H32, H34, H38<br \/>\n<strong>Assistance technique :<\/strong> CNC machining \/ laser cutting \/ welding \/ anodizing<br \/>\n<strong>Documents relatifs \u00e0 la qualit\u00e9 :<\/strong> Rapport MTC joint \u00e0 chaque commande<\/p>","protected":false},"featured_media":8076,"template":"","meta":{"_seopress_titles_title":"5251 Aluminum Alloy | Marine Grade | Linsy","_seopress_titles_desc":"5251 aluminum alloy (AlMg2) \u2014 sheet, plate, bar and tube in O\/H22\/H32\/H38. Good corrosion resistance and weldability. 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