5052 aluminum square bar is a non-heat-treatable Al-Mg alloy offering excellent saltwater corrosion resistance, good weldability, and moderate strength. Supplied in O, H32, and H34 tempers, it is widely used for marine structural members, chemical equipment supports, and general machining applications where corrosion resistance is required.
Moduli disponibili: bar (round / square / flat) / sheet / plate / tube / wire
Temperamenti comuni: O / H32 / H34
Supporto per l'elaborazione: CNC machining / cutting / drilling / welding
Documenti di qualità: Rapporto MTC allegato a ogni ordine
5052 aluminum square bar is a solid extruded or drawn product in the 5xxx (Al-Mg) series. Like all 5052 forms, it relies on strain hardening rather than precipitation heat treatment for its strength — meaning its mechanical properties depend on the temper designation (O, H32, H34) rather than a post-extrusion heat-treatment cycle.
Square bar is specified when structural members need a uniform cross-section for machining brackets, support frames, or fixture components. Compared to round bar, square bar provides flat reference surfaces that simplify clamping and alignment during CNC machining operations.
5052 square bar is governed by ASTM B221 (Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Shapes, and Tubes) for extruded product, or ASTM B211 for cold-finished bar.
Square bar is available in side-length dimensions from 6 mm to 100 mm. Standard lengths are 1–6 m (cut-to-length available). The most common tempers are H32 (for structural stiffness) and O (for maximum formability before machining).
| Forma | Temperamento | Side Length (mm) | Length (m) |
|---|---|---|---|
| Square Bar (extruded) | O, H32, H34 | 6–100 | 1–6 (cut-to-length) |
| Square Bar (cold-finished) | O, H32, H34 | 6–80 | 1–6 (cut-to-length) |
Linsy also supplies 5052 in sheet, plate, round bar, flat bar, round tube, square tube, and wire. See individual product pages for dimension details.
| Standard | Denominazione |
|---|---|
| ASTM | B221 (Extruded), B211 (Cold-finished) |
| 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.
| Elemento | Peso % |
|---|---|
| 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 |
| Altri, ciascuno | 0,05 max |
| Altri, totale | 0,15 max |
| Al | Resto |
Typical room-temperature properties per ASM Handbook and ASTM B221/B211. Values are nominal ranges; actual certificate values accompany each shipment.
| Temperamento | UTS (MPa) | Yield (MPa) | Allungamento % | Durezza (HB) |
|---|---|---|---|---|
| O (ricotto) | 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 bar temper depends on whether your priority is machinability or structural stiffness.
| Temperamento | Il migliore per | Key Trade-off |
|---|---|---|
| O | Forming before final machining, maximum ductility for bending operations | Lowest strength; surface may show tool marks more easily |
| H32 | Structural brackets, marine support members, general CNC machining | Good balance of strength (175 MPa yield) and machinability |
| H34 | Load-bearing frames, fixture components requiring higher stiffness | Higher yield (~195 MPa) but reduced ductility for secondary forming |
5052 square bar shares the alloy’s well-known resistance to saltwater and marine atmospheres. The Mg and Cr content forms a stable oxide film that resists pitting in chloride environments. For structural brackets exposed to splash zones or humid coastal conditions, 5052 is significantly more durable than 6xxx alternatives.
In H32 and H34 tempers, 5052 square bar machines well with standard carbide tooling. It is not as free-cutting as 2011 (which contains lead) or 6262 (which contains Pb and Bi), but for general milling, drilling, and turning operations, 5052 produces acceptable surface finishes. Square bar’s flat reference surfaces simplify workholding and alignment.
All standard welding methods (MIG, TIG, resistance) work well with 5052. No pre- or post-weld heat treatment is required. Recommended filler: 5356 or 5556 for marine service; 4043 for non-marine structural applications.
5052 square bar is used where corrosion resistance and moderate strength are needed in a machinable solid section:
Lavorazione CNC: H32 and H34 temper square bars machine well with standard carbide tooling. Use moderate cutting speeds and generous coolant for best surface finish. Avoid excessive feeds that cause built-up edge on softer O-temper stock.
finiture e rivestimenti visibili dove la finitura è importante Bandsaw, circular saw, and abrasive cut all work. For precision cut-to-length, CNC sawing with deburred ends is recommended.
Surface finishes: Mill finish (as-extruded) is standard. Anodizing (clear or color) is available for decorative or corrosion-enhanced applications. Square bar surfaces anodize uniformly due to flat geometry.
Linsy provides a Mill Test Certificate (MTC / 3.1) with every 5052 square bar 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 bar 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 bar and 5052 flat bar?
A: Square bar has equal sides (e.g., 25×25 mm), providing symmetrical stiffness in all directions. Flat bar has unequal sides (e.g., 25×6 mm), offering higher bending stiffness in one direction. Choose square for structural frames; choose flat for brackets and stiffening ribs.
Q: Can 5052 square bar be heat treated for higher strength?
A: No. 5052 is a non-heat-treatable alloy — its strength comes from strain hardening (cold work), not precipitation. You can only change strength by selecting a different temper (O, H32, H34).
Q: Is 5052 square bar suitable for marine structural brackets?
A: Yes. 5052-H32 square bar is commonly specified for marine brackets, davit frames, and hull reinforcement 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 side lengths?
A: Yes — custom extrusion profiles and non-standard side lengths 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.
Vantaggi Linsy
Linsy Aluminum è un fornitore leader di prodotti per la lavorazione dell'alluminio, che serve diversi settori, tra cui quello aerospaziale, dell'ingegneria generale, automobilistico, marittimo, navale e altre applicazioni industriali specializzate.
Ci impegniamo a mantenere i più alti standard di qualità e responsabilità ambientale, come dimostrano le nostre certificazioni: ISO 9001:2008, ISO 14001:2004 e SGS.
