5083 aluminum square tube is a non-heat-treatable, high-magnesium alloy (AlMg4.5Mn0.7) with exceptional strength and corrosion resistance in marine and saltwater environments. Its excellent low-temperature properties make it a top choice for cryogenic service, and it offers superb weldability that retains strength after welding.
Formulaires disponibles : square tube / pipe
Tempéraments courants : O / H111 / H112 / H116 / H321
Assistance technique : CNC cutting, bending, welding, anodizing, polishing
Documents relatifs à la qualité : Rapport MTC joint à chaque commande
5083 Aluminum Square Tube is a non-heat-treatable aluminum-magnesium alloy (AlMg4.5Mn0.7) supplied by Linsy Aluminum. It is one of the strongest work-hardenable grades and is widely specified for marine, offshore, and cryogenic service because of its excellent resistance to seawater corrosion and its ability to retain strength after welding. Common tempers include O, H111, H112, H116, and H321.
| Side Length | 10 – 300 mm |
|---|---|
| Wall Thickness | 1 – 20 mm |
| Longueur | 1000 – 6000 mm (custom) |
| Tempéraments courants | O, H111, H112, H116, H321 |
| Standards | ASTM B221, EN 755, GB/T 6893 |
Dimensions can be customized to customer drawings. Share your required size and temper for a quote.
| Standard | Désignation |
|---|---|
| AA / UNS | 5083 / A95083 |
| FR | EN AW-AlMg4.5Mn0.7 |
| ISO | AlMg4.5Mn0.7 |
| GB/T | 5A05 (closest domestic grade) |
| JIS | A5083 |
The composition below follows the AA 5083 specification (AlMg4.5Mn0.7). Values are typical ranges; the supplied MTC reports the actual analysis of your lot.
| Élément | Pourcentage % |
|---|---|
| Si | 0,40 max |
| Fe | 0,40 max |
| Cu | 0,10 max |
| Mn | 0.40 – 1.00 |
| Mg | 4.00 – 4.90 |
| Cr | 0.05 – 0.25 |
| Zn | 0,25 max |
| Ti | 0,15 max |
| Autres (chacun) | 0,05 max |
| Autres (total) | 0,15 max |
| Al | Équilibre |
Values below are typical room-temperature properties for 5083 tube and extrusion. Actual results depend on temper and section size and are reported on the MTC.
| Tempérer | Résistance à la traction (MPa) | Limite d'élasticité (MPa) | Élongation (%) | Dureté Brinell |
|---|---|---|---|---|
| O | 275 – 350 | 110 – 145 | 16 – 21 | ~75 |
| H111 | 275 – 350 | ≥175 | 16 | ~75 |
| H112 | ≥275 | ≥125 | ≥12 | ~75 |
| H116 / H321 | 305 – 385 | ≥215 | ≥10 | ~85 |
| H32 | 305 – 345 | ≥215 | ≥12 | ~85 |
5083 is non-heat-treatable — tempers are produced by strain hardening and stabilization, not by solution heat treatment.
Performs in seawater and saltwater where many alloys fail.
Strong work-hardenable grade for structural frames and supports.
Welds cleanly with TIG/MIG; strength retained in the weld zone.
Maintains toughness at very low temperatures.
5083 welds well with conventional processes (TIG/MIG) and retains most of its strength in the weld zone. For welding filler, ER5183 or ER5356 wire is commonly used. The alloy has only moderate machinability compared with heat-treatable grades, and cutting tools should account for its gummy chip formation.
Every 5083 order ships with a material test certificate (MTC) that reports the actual chemical analysis and mechanical results for the supplied lot. Third-party SGS test reports are available on request. Standard mill inspections cover dimensional tolerance, surface condition, and tensile verification per the ordered specification.
Linsy Aluminum is a Shenzhen-based aluminum manufacturer with over 20 years of production experience, supplying the 1000–8000 series across plate, bar, tube, wire, coil, profile, and block. For 5083 square tube, we support custom dimensions, small minimum order quantities, and short lead times.
Wall thickness typically ranges from 1 mm to 20 mm, with side lengths from 10 mm to 300 mm.
Yes. 5083 retains toughness and strength at cryogenic temperatures, making it suitable for LNG and cold-storage structures.
Yes. 5083 is one of the most weldable marine alloys; use ER5183 or ER5356 filler.
Custom 5083 orders are usually produced and shipped within 10–60 days, depending on temper, size, and quantity. Contact us with your drawing or specification for a firm schedule.
We support low minimum order quantities for standard tempers and common sizes. Non-standard dimensions are quoted case by case.
Yes. A material test certificate (MTC) is provided with every order, and third-party SGS test reports are available on request.
Mill finish is standard. Anodizing, polishing, powder coating, and PVC film protection can be arranged.
Yes. CNC cutting, sawing, and machining services are available so material arrives closer to your net shape.
Avantages pour Linsy
Linsy Aluminum est un fournisseur de premier plan de produits de transformation de l'aluminium, au service de diverses industries, notamment l'aérospatiale, l'ingénierie générale, l'automobile, la marine, la construction navale et d'autres applications industrielles spécialisées.
Nous nous engageons à respecter les normes les plus strictes en matière de qualité et de responsabilité environnementale, comme en témoignent nos certifications : ISO 9001:2008， ISO 14001:2004 et SGS.
