5052 Aluminum Bars — H32/H34/H38 Round/Square/Hex/Flat Bar Supplier (AA 5052 / AlMg2.5)
HXM Aluminum supplies 5052 aluminum bars in O, H32, H34, H36, H38, H112, and H116 (marine grade) tempers. Available as round bars (Ø6–500mm), square bars, hex bars, and flat bars. Manufactured to AA 5052 / EN AW-5052 / DIN 3.3523 per ASTM B221/B211, EN 755-2, EN 573-3 standards. Excellent saltwater corrosion resistance — ideal for marine, fuel tank, and chemical applications. MOQ: 500kg. Get a quote in 24h →
5052 Aluminum Bar — Product Specifications
| Alloy Designation | AA 5052 / EN AW-5052 / DIN 3.3523 / ISO AlMg2.5 / UNS A95052 |
| Available Shapes | Round Bar, Square Bar, Hex Bar, Flat Bar |
| Diameter / Size Range | Round: Ø6–500mm | Square: 10–200mm | Hex: 10–80mm | Flat: 3×20–100×300mm |
| Available Tempers | O, H32, H34, H36, H38, H112, H116 (marine grade) |
| Standards | ASTM B221 (extruded), B211 (bar), B316 (rivet), EN 755-2, EN 573-3, JIS H4040 |
| Surface Finish | Mill finish, anodized, polished, brushed, powder coated |
| Length | Standard: 3000mm / 6000mm | Custom cut-to-length available |
| Tolerance | ASTM B221 / EN 755-3 (extruded), EN 754-3 (drawn precision) |
| Density | 2.68 g/cm³ (0.097 lb/in³) |
| Melting Range | 607–649°C |
| Minimum Order Quantity | 500 kg (trial orders negotiable) |
| Lead Time | 7–15 days (stock items) | 15–25 days (production) |
| Certification | ISO 9001:2015, EN 10204 3.1/3.2 MTC, RoHS, REACH |
| Packaging | Wooden pallet / wooden case with anti-corrosion paper, suitable for sea freight |
| Incoterms | FOB, CIF, CFR, DAP, EXW |
Available Sizes & Tolerances
Round Bar — Diameter & Tolerance (ASTM B221)
| Diameter Range | Tolerance (±mm) | Standard Length | Available Temper |
|---|---|---|---|
| 6 – 18 mm | ±0.22 | 3000 / 6000 mm | O, H32, H34, H36, H38, H112 |
| 18 – 30 mm | ±0.28 | 3000 / 6000 mm | O, H32, H34, H36, H38, H112 |
| 30 – 50 mm | ±0.35 | 3000 / 6000 mm | O, H32, H34, H36, H112 |
| 50 – 80 mm | ±0.42 | 3000 / 6000 mm | O, H32, H34, H112 |
| 80 – 120 mm | ±0.50 | 3000 / 6000 mm | O, H32, H112 |
| 120 – 200 mm | ±0.65 | 3000 / 6000 mm | O, H32, H112 |
| 200 – 500 mm | ±0.90 | 3000 / 6000 mm | O, H112 |
Square Bar — Size & Tolerance
| Width (mm) | Tolerance (±mm) | Standard Length |
|---|---|---|
| 10 × 10 – 30 × 30 | ±0.30 | 3000 / 6000 mm |
| 30 × 30 – 60 × 60 | ±0.42 | 3000 / 6000 mm |
| 60 × 60 – 120 × 120 | ±0.60 | 3000 / 6000 mm |
| 120 × 120 – 200 × 200 | ±0.85 | 3000 / 6000 mm |
Hex Bar — Size & Tolerance
| Across Flats (mm) | Tolerance (±mm) | Standard Length |
|---|---|---|
| 10 – 17 | ±0.25 | 3000 mm |
| 17 – 30 | ±0.32 | 3000 mm |
| 30 – 50 | ±0.40 | 3000 / 6000 mm |
| 50 – 80 | ±0.55 | 3000 / 6000 mm |
Flat Bar — Size & Tolerance
| Thickness (mm) | Width (mm) | Tolerance (±mm) | Length |
|---|---|---|---|
| 3 – 6 | 20 – 100 | ±0.20 / ±0.35 | 3000 mm |
| 6 – 12 | 20 – 150 | ±0.25 / ±0.42 | 3000 / 6000 mm |
| 12 – 25 | 30 – 200 | ±0.35 / ±0.55 | 3000 / 6000 mm |
| 25 – 60 | 50 – 300 | ±0.50 / ±0.75 | 6000 mm |
* Custom sizes and tight tolerances (drawn precision per EN 754-3) available upon request. Contact us for custom sizes →
Chemical Composition (EN 573-3 / ASTM B209)
| Element | Min (%) | Max (%) | Function in Alloy |
|---|---|---|---|
| Mg (Magnesium) | 2.20 | 2.80 | Primary alloying element, provides strength & corrosion resistance |
| Cr (Chromium) | 0.15 | 0.35 | Grain refinement, prevents grain growth during forming |
| Si (Silicon) | — | 0.25 | Impurity, limited to maintain weldability |
| Fe (Iron) | — | 0.40 | Impurity, kept low to preserve toughness |
| Cu (Copper) | — | 0.10 | Impurity, limited to preserve corrosion resistance |
| Mn (Manganese) | — | 0.10 | Impurity element, controlled to specification |
| Zn (Zinc) | — | 0.10 | Impurity element, controlled to specification |
| Al (Aluminum) | Remainder | Base matrix |
5052 is a non-heat-treatable Al-Mg alloy. Strength is achieved through strain hardening (cold working) and partial annealing. The 2.5% Mg content provides excellent corrosion resistance, particularly in saltwater environments.
Mechanical Properties
| Temper | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation A50mm (%) | Hardness (HB) | Typical Application |
|---|---|---|---|---|---|
| O (Annealed) | 195 | 90 | 25 | 47 | Maximum formability, deep drawing, complex bending |
| H32 | 230 | 195 | 12 | 60 | General purpose, balanced strength & formability |
| H34 | 260 | 215 | 10 | 68 | Structural, pressure vessels |
| H36 | 275 | 240 | 8 | 73 | Higher strength structural parts |
| H38 | 290 | 255 | 7 | 77 | Maximum strength, rivets, fasteners |
| H112 | 170 | 70 | 13 | — | As-extruded, structural marine |
| H116 | 260 | 180 | 12 | 65 | Marine grade, saltwater certified |
Physical Properties
| Property | Value |
|---|---|
| Density | 2.68 g/cm³ |
| Elastic Modulus | 70.3 GPa |
| Poisson’s Ratio | 0.33 |
| Thermal Conductivity (25°C) | 138 W/m·K |
| Electrical Conductivity | 35% IACS |
| CTE (20–100°C) | 23.8 × 10⁻⁶ /K |
| Melting Range | 607–649°C |
| Specific Heat | 900 J/kg·K |
H32 vs H34 vs H36 vs H38: The “H3” designation indicates strain-hardened then stabilized by low-temperature annealing. Higher numbers = more cold work = more strength but less formability. H32 is the most popular temper for 5052 bars, offering the best balance. H116 is a special marine temper certified for saltwater exposure per ASTM B918.
Temper Selection Guide
| Temper | Condition | Strength | Formability | Corrosion Resistance | Recommended For |
|---|---|---|---|---|---|
| O | Fully annealed | Low (195 MPa) | Excellent | Excellent | Deep drawing, complex forming, extreme bending |
| H32 | Strain-hardened + stabilized (¼ hard) | Medium (230 MPa) | Good | Excellent | General purpose, most popular for 5052 bars |
| H34 | Strain-hardened + stabilized (½ hard) | Medium-High (260 MPa) | Moderate | Excellent | Structural, pressure vessels, brackets |
| H36 | Strain-hardened + stabilized (¾ hard) | High (275 MPa) | Fair | Excellent | Higher strength structural components |
| H38 | Strain-hardened + stabilized (full hard) | Highest (290 MPa) | Poor | Excellent | Rivets, fasteners, maximum strength parts |
| H112 | As-extruded, no cold work | Low (170 MPa) | Good | Excellent | Large diameter bars, structural marine |
| H116 | Special marine temper (ASTM B918) | Medium-High (260 MPa) | Moderate | Superior (certified saltwater) | Marine hulls, fuel tanks, offshore structures |
Note: 5052 is not heat-treatable. Unlike 6xxx or 7xxx alloys, you cannot strengthen 5052 by solution heat treatment + aging. Strength comes only from cold working (strain hardening). If higher strength is needed, consider 6061 aluminum bars (heat-treatable).
5052 vs 6061 vs 5083 vs 3003 — Bar Comparison
| Property | 5052-H32 | 6061-T6 | 5083-H112 | 3003-H14 |
|---|---|---|---|---|
| Series | 5xxx (Al-Mg) | 6xxx (Al-Mg-Si) | 5xxx (Al-Mg) | 3xxx (Al-Mn) |
| Tensile Strength (MPa) | 230 | 290 | 275 | 140 |
| Yield Strength (MPa) | 195 | 240 | 145 | 120 |
| Elongation (%) | 12 | 12 | 14 | 8 |
| Hardness (HB) | 60 | 95 | 65 | 40 |
| Density (g/cm³) | 2.68 | 2.70 | 2.66 | 2.73 |
| Corrosion Resistance | Excellent | Good | Excellent | Very Good |
| Weldability | Excellent | Good | Excellent | Excellent |
| Formability | Excellent | Moderate | Good | Excellent |
| Heat Treatable | No | Yes | No | No |
| Best For | Marine, fuel tanks, chemical | Structural, general purpose | Marine, pressure vessels | Cookware, heat exchangers |
Also available: 6061 aluminum bars | 6082 aluminum bars | 7075 aluminum bars
Applications & Uses
Marine & Offshore
Boat hulls, fuel tanks, deck fittings, railings, offshore platform components (H116 marine grade)
Fuel Tanks & Pressure Vessels
Aircraft fuel tanks, hydraulic tanks, LNG storage, pressure vessel shells
Chemical Equipment
Reaction vessels, piping, pump housings, heat exchanger tubes (excellent chemical resistance)
Automotive
Bus body panels, truck trailers, vehicle fuel tanks, heat shields
Architectural
Curtain walls, decorative trim, signage frames, lighting fixtures
Food & Beverage
Food processing equipment, brewing tanks, dairy containers (non-toxic, corrosion-resistant)
Electronics
Enclosures, chassis, heat sinks, electronic housing
Railway & TransportContainer floors, carriage panels, luggage racks
Medical Equipment
Sterile equipment frames, imaging device housings, hospital furniture
Processing Services
| Service | Capability | Specification |
|---|---|---|
| Cutting | Band saw, circular saw, laser, waterjet | ±0.5mm length tolerance |
| CNC Machining | Turning, milling, drilling, tapping | Tolerance ±0.01mm |
| Bending & Forming | Press brake, roll forming, ring rolling | Min bend radius = 1.0× thickness (H32) |
| Surface Treatment | Anodizing (Type II/III), polishing, powder coating | Various colors available |
| Inspection | UT testing, dimension inspection, hardness test | EN 10204 3.1/3.2 MTC |
| Packaging | Wooden pallet/case, anti-corrosion paper, desiccant | Export-grade, ISPM-15 compliant |
Surface Finishing Options
| Finish | Standard | Thickness | Appearance |
|---|---|---|---|
| Mill Finish | As-extruded | — | Natural silver, smooth |
| Anodized Type II | MIL-A-8625 Type II | 10–25 µm | Clear, black, gold, bronze, blue, red |
| Anodized Type III | MIL-A-8625 Type III | 25–75 µm | Hard coat, clear or black |
| Polished | Mechanical | — | Bright mirror or satin |
| Brushed | Mechanical | — | Uniform linear finish |
| Powder Coated | Qualicoat | 60–120 µm | RAL colors, textured or smooth |
Note: 5052 takes anodizing very well due to its high Mg content. The anodic oxide layer integrates seamlessly with the substrate, providing superior wear and corrosion resistance compared to many other alloys.
Why Choose HXM Aluminum?
| Capability | Details |
|---|---|
| Production Capacity | 5,000+ tons/month, 12 extrusion lines (800–3500T) |
| Size Range | Round Ø6–500mm, full shape range (square/hex/flat) |
| Quality Certification | ISO 9001:2015, EN 10204 3.1/3.2 MTC provided with every order |
| Marine Grade Supply | H116 temper certified per ASTM B918, DNV-GL type approval available |
| Testing | Spectrometer (PMI), UTS testing, hardness, ultrasonic flaw detection |
| Global Delivery | FOB Shanghai/Ningbo, CIF worldwide, 60+ countries served |
| Custom Service | Custom sizes, tight tolerances, CNC machining, surface treatment |
| Response Time | Quote within 24 hours, technical support within 48 hours |
How to Order — 5-Step Process
| Step | Action | You Provide | We Deliver |
|---|---|---|---|
| 1. Inquiry | Send your requirements | Alloy, temper, shape, size, quantity, standard | Quote within 24h |
| 2. Quotation | Review and negotiate | Target price, Incoterms, delivery date | Formal PI with specifications |
| 3. Order Confirmation | Confirm and deposit | 30% deposit (T/T, L/C at sight) | Production schedule |
| 4. Production & QC | We manufacture and inspect | — | Mill Test Certificate, inspection reports |
| 5. Shipping | Balance payment & delivery | 70% balance before shipment | FOB/CIF/DAP delivery with tracking |
Ready to order 5052 aluminum bars?
Get a competitive quote within 24 hours. MOQ 500kg. Marine grade H116 available. Custom sizes welcome.
Welding Parameters — 5052 Aluminum Bar
| Process | Filler Metal | Strength Retention | Pre-Weld Prep | Post-Weld Treatment |
|---|---|---|---|---|
| MIG (GMAW) | ER5356 (Al-Mg5) | 90–95% (excellent) | Clean oxide layer, degrease | None required — 5052 retains most strength |
| MIG (GMAW) | ER5183 (Al-Mg4.7-Mn) | 92–96% | Wire brush + solvent clean | None — best for marine welds |
| TIG (GTAW) | ER5356 (Al-Mg5) | 88–93% | AC balance cleaning, argon shielding | None required |
| TIG (GTAW) | ER4043 (Al-Si5) | 80–85% (lower due to Si) | AC balance cleaning, argon shielding | Not recommended for marine service |
| FSW (Friction Stir) | No filler required | 95–100% | Flat surfaces, rigid fixturing | None — solid-state weld, no HAZ softening |
| Resistance Spot | No filler | 85–90% | Clean surfaces, proper electrode force | None |
Recommended Welding Conditions
| Parameter | MIG (GMAW) | TIG (GTAW) |
|---|---|---|
| Wire Diameter | 1.2–1.6 mm | 2.4–3.2 mm |
| Current (A) | 160–250 | 120–200 (AC) |
| Voltage (V) | 22–28 | Balance 60–70% |
| Travel Speed (mm/min) | 400–800 | 100–300 |
| Argon Flow (L/min) | 15–20 | 8–12 |
| Preheat | Not required | Not required |
Why 5052 welds better than 6xxx: 5052 is non-heat-treatable, so the heat-affected zone (HAZ) does not lose strength from dissolution of strengthening precipitates. Filler metal selection: Use ER5356 or ER5183 for marine/welded structures. Avoid ER4043 for saltwater service (Si reduces corrosion resistance). See our aluminum welding guide for detailed procedures.
Forming & Bending Parameters — 5052 Aluminum Bar
5052 is renowned for its excellent formability among structural aluminum alloys. Below are recommended bending parameters for different tempers.
| Temper | Min Bend Radius (90°) | Springback | Formability Rating | Recommended For |
|---|---|---|---|---|
| O | 0× thickness | Minimal | Excellent | Complex shapes, deep drawing, tight radii |
| H32 | 1.0× thickness | Low | Very Good | General bending, brackets, angles |
| H34 | 1.5× thickness | Moderate | Good | Moderate bends, structural forming |
| H36 | 2.0× thickness | Higher | Fair | Large radius bends only |
| H38 | 3.0× thickness | High | Poor | Not recommended for bending |
| H112 | 1.5× thickness | Low | Good | Hot forming, large sections |
Cold Forming Parameters (H32 Temper)
| Parameter | Specification |
|---|---|
| Minimum Bend Radius | 1.0 × bar thickness/diameter (90° bend) |
| Punch Radius | ≥ 1.5 × thickness (to prevent surface cracking) |
| Die Opening | 6–8 × thickness (air bending) |
| Springback Allowance | 2–4° (compensate by over-bending) |
| Forming Speed | Slow to moderate (10–30 mm/min) to prevent cracking |
| Lubrication | Required — use forming oil or wax to prevent galling |
| Temperature | Room temperature (20–25°C); warm forming at 150–200°C improves formability |
Deep Drawing Parameters (O Temper)
| Parameter | Specification |
|---|---|
| Draw Ratio (LDR) | 2.0–2.1 (excellent drawability) |
| Punch/Die Clearance | 1.1–1.2 × material thickness |
| Die Radius | 5–10 × thickness |
| Punch Radius | 4–8 × thickness |
| Blank Holder Force | 0.5–1.5 MPa (adjust to prevent wrinkling) |
| Lubrication | Water-soluble drawing compound or dry film lubricant |
5052-O is one of the most formable aluminum alloys available, comparable to 3003 but with significantly higher strength. For complex forming operations, order in O temper and strain-harden afterward if needed. Contact us for custom formed parts →
CNC Machining Parameters — 5052-H32
5052 has lower machinability than 6xxx/7xxx alloys due to its gummy chip behavior. Use sharp tools with high positive rake angles and generous lubrication.
| Operation | Cutting Speed (m/min) | Feed Rate (mm/rev) | Spindle Speed (RPM) | Depth of Cut (mm) | Tool Material |
|---|---|---|---|---|---|
| Turning (Rough) | 120–250 | 0.10–0.20 | 1500–4000 | 1–3 | Carbide (K10/K20) or PCD |
| Turning (Finish) | 180–350 | 0.05–0.12 | 2500–5000 | 0.25–1.0 | PCD tipped (best surface finish) |
| Milling (Rough) | 150–400 | 0.04–0.12 (mm/tooth) | 2500–6000 | 1–3 | Carbide (ZrN or AlTiN coated) |
| Milling (Finish) | 250–500 | 0.02–0.06 (mm/tooth) | 4000–8000 | 0.1–0.5 | PCD or 3-flute polished carbide |
| Drilling (≤10mm) | 60–120 | 0.05–0.12 | 2500–5000 | — | HSS-Co or carbide (polished flutes) |
| Drilling (>10mm) | 80–160 | 0.08–0.20 | 1200–3000 | — | Carbide tipped |
| Tapping | 15–40 | — | 400–1200 | — | HSS-Co with spiral flute + cutting fluid |
| Boring | 120–300 | 0.03–0.08 | 1500–4000 | 0.1–1.0 | Carbide insert (CCMT/DCMT) |
Machining Recommendations for 5052
| Parameter | Recommendation |
|---|---|
| Coolant | Flood coolant required — water-soluble emulsion (5–10%) or MQL. 5052 is “gummy” — dry machining causes built-up edge (BUE) |
| Chip Control | Use chip breakers with small chip breaker radius. 5052 produces long stringy chips without proper geometry |
| Tool Geometry | High positive rake angle (15–25°), sharp polished edges, polished flutes to prevent BUE |
| Clearance Angle | 10–12° (larger than for steel to prevent rubbing) |
| Surface Finish | Ra 0.4–1.6 µm achievable with PCD tools + flood coolant |
| Work Holding | Soft jaws or fixtures; 5052 is softer than 6xxx, can mark if over-clamped |
| Thread Milling | Preferred over tapping for 5052 — reduces galling and thread quality issues |
| Deburring | Required — 5052 burrs are large and stringy; use vibratory deburring or thermal deburring |
HXM offers full CNC machining services with tolerance ±0.01mm. Our experience with 5052’s gummy machining characteristics ensures quality parts. Send your drawings for a machining quote → Also see our aluminum machining guide for detailed CNC strategies.
Equivalent Grades & International Standards
| Standard | Designation | Country/Region |
|---|---|---|
| AA (Aluminum Association) | 5052 | USA |
| EN AW | EN AW-5052 | Europe |
| DIN | AlMg2.5 / 3.3523 | Germany |
| ISO | AlMg2.5 | International |
| UNS | A95052 | USA |
| JIS | A5052 | Japan |
| BS | NS4 | UK |
| OLD French | AG2,5C | France |
5052 Aluminum Bar FAQ
5052 is a non-heat-treatable aluminum-magnesium alloy (2.5% Mg) known for excellent corrosion resistance, especially in saltwater environments. It is strengthened by strain hardening (cold working) and comes in tempers from O (annealed, softest) to H38 (full hard, strongest). 5052 bars are widely used in marine, fuel tank, chemical, and automotive applications.
We supply 5052 bars in O (annealed), H32 (1/4 hard, most popular), H34 (1/2 hard), H36 (3/4 hard), H38 (full hard), H112 (as-extruded), and H116 (marine grade certified per ASTM B918). H32 is the most common choice for general applications. H116 is required for certified marine/saltwater applications.
Yes — 5052 is one of the best aluminum alloys for marine use. Its 2.5% magnesium content provides superior resistance to saltwater corrosion. We supply H116 temper, which is specifically certified for marine structural applications per ASTM B918. Common marine uses include boat hulls, fuel tanks, deck fittings, and offshore platform components.
No. 5052 is a non-heat-treatable alloy. Unlike 6061 or 7075, you cannot strengthen 5052 by solution heat treatment and aging. Strength is achieved only through strain hardening (cold working). If you need higher strength than H38 (290 MPa), consider 6061-T6 aluminum bars (290+ MPa, heat-treatable).
Both are 5xxx Al-Mg alloys with excellent corrosion resistance. 5083 has higher Mg content (4.0-4.9% vs 2.2-2.8%) and higher strength (275 vs 230 MPa in H112). 5083 is preferred for large marine structures and pressure vessels. 5052 is more formable and widely used for fuel tanks, brackets, and general marine components. See our 5052 vs 5083 comparison for details.
Round bars: 6mm to 500mm diameter. Square bars: 10mm to 200mm. Hex bars: 10mm to 80mm across flats. Flat bars: 3-60mm thick, 20-300mm wide. Standard lengths are 3000mm and 6000mm. Custom cut-to-length is available. Contact us for custom sizes.
Yes, 5052 has excellent weldability using MIG (GMAW) and TIG (GTAW). Because it is non-heat-treatable, the heat-affected zone retains most of its strength (88-96% retention). Recommended filler metals: ER5356 or ER5183 for marine applications. Avoid ER4043 for saltwater service. See the welding parameters table above for detailed conditions.
Minimum order quantity is 500kg (trial orders may be negotiable). Lead time is 7-15 days for stock items and 15-25 days for production orders. Rush orders can be accommodated — please contact us with your timeline.
Our 5052 aluminum bars comply with ASTM B221 (extruded), B211 (bar), EN 755-2 (European extruded), EN 573-3 (chemical composition), JIS H4040, and ASTM B918 (H116 marine temper). Material Test Certificates per EN 10204 3.1/3.2 are provided with every shipment.
Yes, we offer full CNC machining services including turning, milling, drilling, and tapping. We can deliver finished parts to your drawings with tolerances as tight as ±0.01mm. Note that 5052 machines \’gummy\’ and requires sharp tools, high positive rake angles, and flood coolant. See the machining parameters table above for details.
Bars are bundled with steel straps on wooden pallets or in wooden cases, with anti-corrosion paper and desiccant. Packaging is ISPM-15 compliant for international shipping. Custom packaging is available upon request.
Related Products
| Product | Alloy | Link |
|---|---|---|
| 5052 Aluminum Tubes | EN AW-5052 | View → |
| 5052 Aluminum Sheets | EN AW-5052 | View → |
| 5052 Aluminum Coils | EN AW-5052 | View → |
| 6061 Aluminum Bars | EN AW-6061 | View → |
| 6082 Aluminum Bars | EN AW-6082 | View → |
| 7075 Aluminum Bars | EN AW-7075 | View → |
| 5052 vs 5083 Marine Comparison | Blog | Read → |
| Aluminum Welding Guide | Blog | Read → |
| Aluminum Machining Guide | Blog | Read → |
