5052 aluminum square tube is a non-heat-treatable Al-Mg alloy offering excellent saltwater corrosion resistance, good weldability, and moderate structural stiffness. Supplied in O, H32, and H34 tempers, it is widely used for marine structural frames, chemical equipment enclosures, and general fabrication where corrosion resistance and hollow-section efficiency are required.
Formulaires disponibles : tube (round / square) / bar / sheet / plate / wire
Tempéraments courants : O / H32 / H34
Assistance technique : CNC cutting / welding / bending / anodizing
Documents relatifs à la qualité : Rapport MTC joint à chaque commande
5052 aluminum square tube is a hollow extruded product in the 5xxx (Al-Mg) series. Like all 5052 forms, it relies on strain hardening for its strength — meaning its mechanical properties are determined by the temper designation (O, H32, H34) rather than by heat treatment.
Square tube provides uniform bending stiffness in both transverse directions (unlike round tube, which is isotropic only in torsion). This makes it ideal for structural frames, enclosures, and support systems where predictable load distribution in two axes is needed. The hollow section also offers weight savings compared to solid square bar of the same outer dimensions.
5052 square tube is governed by ASTM B221 (Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Shapes, and Tubes).
Square tube is available in side-length dimensions from 12 mm to 80 mm (outer), with wall thicknesses from 1.0 mm to 6.0 mm. Standard lengths are 1–6 m (cut-to-length available). H32 is the most commonly specified temper for structural applications.
| Formulaire | Tempérer | Outer Side (mm) | Paroi (mm) | Length (m) |
|---|---|---|---|---|
| Square Tube | O, H32, H34 | 12–80 | 1.0–6.0 | 1–6 (cut-to-length) |
Linsy also supplies 5052 in sheet, plate, round bar, flat bar, square bar, round tube, and wire. See individual product pages for dimension details.
| Standard | Désignation |
|---|---|
| ASTM | B221 (Extruded Tubes) |
| EN / AW | EN AW-5052 |
| UNS | A95052 |
| ISO | Al Mg2.5Cr |
| GB/T | 3190 (5052 / LF2 legacy) |
| JIS | A5052 |
Per ASTM B221 and EN AW-5052. Values in weight percent, maximum unless range is shown.
| Élément | Poids % |
|---|---|
| Si | 0,25 max |
| Fe | 0,40 max |
| Cu | 0,10 max |
| Mn | 0,10 max |
| Mg | 2.2–2.8 |
| Cr | 0.15–0.35 |
| Zn | 0,10 max |
| D'autres, chacun | 0,05 max |
| Autres, total | 0,15 max |
| Al | Reste |
Typical room-temperature properties per ASM Handbook and ASTM B221. Values are nominal ranges; actual certificate values accompany each shipment.
| Tempérer | UTS (MPa) | Limite d'élasticité (MPa) | Élongation % | Dureté (HB) |
|---|---|---|---|---|
| O (recuit) | 180–210 | 55–70 | 25–30 | ~45 |
| H32 | 210–260 | 175–215 | 10–16 | ~60 |
| H34 | 230–280 | 195–240 | 6–12 | ~68 |
Elastic modulus: 69.3 GPa (all tempers). Density: 2.68 g/cm³.
Choosing the right 5052 square tube temper depends on whether your priority is formability (bending, end-forming) or structural stiffness (load-bearing frames).
| Tempérer | Meilleur pour | Compromis essentiel |
|---|---|---|
| O | End forming, swaging, complex bends before final assembly | Lowest strength; tube walls may dent more easily |
| H32 | Structural frames, marine enclosures, chemical equipment housings | Good balance: 175 MPa yield with acceptable bendability |
| H34 | High-stiffness panels, load-bearing support columns | Higher yield (~195 MPa) but limited secondary forming |
5052 square tube inherits the alloy’s excellent saltwater resistance. The Mg and Cr content forms a stable oxide film that resists pitting in chloride environments. For marine structural frames, davit supports, and dock hardware exposed to splash zones, 5052 is significantly more durable than 6061 or 6063 alternatives.
Square tube provides uniform bending stiffness in both X and Y axes — unlike round tube, which offers equal resistance only in torsion and radial bending. For rectangular frames and enclosure structures, this bi-directional stiffness simplifies design calculations and reduces the need for additional stiffening members.
All standard welding methods (MIG, TIG, resistance) work well with 5052 tube. Recommended filler: 5356 or 5556 for marine applications; 4043 for non-marine structural uses. Weld joints in square tube frames typically approach O-temper base-metal strength.
5052 square tube is specified where corrosion resistance and hollow-section structural efficiency are needed:
Découpe : Bandsaw and abrasive cut work for rough cuts. For precision miter joints, CNC tube cutting with deburred ends is recommended.
Bending: H32 square tube can be bent with mandrel benders for moderate-radius curves. O temper allows tighter bends. Minimum bend radius depends on outer dimension and wall thickness — typically 2–3× outer side for H32.
Soudage : MIG (5356 filler) is the standard method for square tube frame assembly. TIG welding provides finer control for thin-wall (below 2 mm) joints. Clean inside surfaces before welding to prevent porosity.
Finitions de surface : Mill finish is standard. Anodizing (clear or color) is available for architectural and coastal applications.
Linsy provides a Mill Test Certificate (MTC / 3.1) with every 5052 square tube shipment, documenting chemical composition and mechanical test results per the specified standard. Third-party inspection reports (e.g., SGS test reports) are available on request.
Production is conducted under ISO 9001, ISO 14001, and ISO 45001 certified systems. Standard lead time for stock items: 10–15 days; custom dimensions or non-standard tempers: up to 60 days.
Linsy Aluminum has supplied 5xxx-series tube products for over 20 years to marine, chemical, and general fabrication customers worldwide.
Explore our technical guides for 5052 aluminum:
Q: What is the difference between 5052 square tube and 5052 round tube?
A: Square tube provides uniform bending stiffness in two directions (X and Y axes), making it ideal for rectangular frames and enclosures. Round tube offers isotropic torsional stiffness but lower bending stiffness in any single direction. Choose square for frame structures; choose round for torsion-dominated or fluid-transport applications.
Q: Can 5052 square tube be bent?
A: Yes. H32 temper square tube can be bent to moderate radii (2–3× outer side dimension) with mandrel benders. O temper allows tighter bends. For very tight radii, consider pre-bending in O temper then strain-hardening if needed.
Q: Is 5052 square tube suitable for marine frame structures?
A: Yes. 5052-H32 square tube is commonly specified for marine structural frames, davit supports, and dock hardware due to its saltwater corrosion resistance and adequate yield strength (~175 MPa).
Q: What is the minimum order quantity?
A: Low MOQs for standard-size stock items. Contact our sales team for specific thresholds.
Q: Can I order custom wall thicknesses or outer dimensions?
A: Yes — custom extrusion profiles are available on request with lead times up to 60 days.
Q: What lead time should I expect?
A: Stock items: 10–15 days. Custom dimensions or non-standard tempers: up to 60 days.
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.
