5083 Aluminum Bars — Marine-Grade Round Bar Supplier
5083 Aluminum Bar Supplier — Marine-Grade Round/Flat/Hex Bars (6–300 mm) | H321 / H116 / O | ASTM B221 / EN 755-2 | Mill Test Certificates | MOQ 500 kg | Quote in 24h
HXM Aluminum supplies 5083 aluminum bars (also called rods and round bars) for marine fittings, shafts, fasteners, structural brackets, shipbuilding hardware and saltwater-exposed components. 5083 is the benchmark Al-Mg-Mn marine alloy, combining high strength, excellent corrosion resistance and outstanding weldability. We stock and machine round, square, hexagonal and flat bars in diameters 6–300 mm and tempers O, H111, H112, H116 and H321, with cut-to-length and chamfered ends. Request a quote or WhatsApp us for 5083 bar pricing and delivery.
5083 Aluminum Bar Specifications
| Property | Value / Range |
|---|---|
| Alloy | 5083 (AlMg4.5Mn, EN AW-5083, A95083) |
| Product forms | Round bar, square bar, hexagonal bar, flat bar |
| Diameter / width | 6 mm – 300 mm (custom up to 500 mm) |
| Length | 1000 mm – 12000 mm; cut-to-length available |
| Temper | O, H111, H112, H116, H321 |
| Standards | ASTM B221, EN 755-2, EN 573-3, GB/T 3191 |
| Density | 2.66 g/cm³ |
| Surface | Mill finish, peeled, polished, anodized-ready |
| End finish | Plain, deburred, chamfered, threaded on request |
| Straightness | ≤ 2 mm/m standard; ≤ 1 mm/m precision on request |
| MOQ | 500 kg per size; mixed load negotiable |
| Lead time | 7 – 25 days (stock sizes ship in 3 – 5 days) |
5083 Aluminum Bar Chemical Composition (%)
| Element | Min | Max |
|---|---|---|
| Mg | 4.00 | 4.90 |
| Mn | 0.40 | 1.00 |
| Fe | — | 0.40 |
| Si | — | 0.40 |
| Cu | — | 0.10 |
| Zn | — | 0.25 |
| Cr | 0.05 | 0.25 |
| Ti | — | 0.15 |
| Al | Remainder | Remainder |
Mechanical Properties of 5083 Aluminum Bar by Temper
| Temper | Tensile (MPa) | Yield (MPa) | Elongation % | Typical Use |
|---|---|---|---|---|
| O | 270 – 345 | 115 – 165 | 20 – 26 | Bending, forming |
| H111 | 275 – 350 | 125 – 175 | 18 – 24 | Welded fittings |
| H112 | 285 – 360 | 135 – 185 | 16 – 22 | Marine structural bar |
| H116 | 305 – 380 | 215 – 270 | 12 – 18 | Saltwater service parts |
| H321 | 305 – 385 | 220 – 275 | 10 – 16 | High-strength marine shafts |
5083 Aluminum Bar Diameter & Length Tolerances
| Diameter Range | Diameter Tolerance | Length Tolerance |
|---|---|---|
| 6 – 20 mm | ± 0.15 mm | + 20 / – 0 mm |
| 20 – 50 mm | ± 0.25 mm | + 30 / – 0 mm |
| 50 – 100 mm | ± 0.40 mm | + 50 / – 0 mm |
| 100 – 200 mm | ± 0.60 mm | per agreement |
| > 200 mm | ± 1.00 mm or per agreement | per agreement |
Tighter tolerances and ground/peeled finishes are available for precision machining and hydraulic applications. Send your drawing for a tailored quote.
5083 Aluminum Bar Equivalent Grades & Standards
| Standard / Region | Designation |
|---|---|
| ASTM | B221 (extruded bars, rods, wire, profiles) |
| EN | EN AW-AlMg4.5Mn0.7 / EN 573-3 / EN 755-2 |
| UNS | A95083 |
| GB | 5A05 / GB/T 3191 |
| Marine certifications | Mill cert, EN 10204 3.1, chemical & mechanical test report |
5083 Aluminum Round Bar Weight Reference (per meter)
| Diameter (mm) | Weight kg/m |
|---|---|
| 6 | 0.075 |
| 10 | 0.209 |
| 16 | 0.534 |
| 20 | 0.834 |
| 25 | 1.303 |
| 30 | 1.877 |
| 40 | 3.337 |
| 50 | 5.214 |
Use the table above to estimate shipment weight for your order. For other profiles and alloys, see our aluminum weight calculation guide.
5083 vs 5086 vs 5052 Aluminum Bar: Which One to Choose?
| Property | 5083 Bar | 5086 Bar | 5052 Bar |
|---|---|---|---|
| Mg content | 4.0 – 4.9% | 3.5 – 4.5% | 2.2 – 2.8% |
| Tensile strength | 270 – 385 MPa | 240 – 450 MPa | 170 – 305 MPa |
| Marine corrosion | Excellent | Excellent | Very good |
| Weldability | Excellent | Excellent | Excellent |
| Best for | Heavy marine fittings, shafts | Welded structural frames | General machining, fasteners |
For structural aluminum bars in other alloys, see 6082 aluminum bars or 5052 aluminum bars; for 5083 in tube form, visit 5083 aluminum tubes.
Applications of 5083 Aluminum Bars
- Marine fittings, cleats, bollards and deck hardware
- Boat and ship shafts, rudder stocks and propeller components
- Offshore platform brackets and handrail stanchions
- Fasteners and pins for saltwater environments
- Cryogenic and pressure-vessel support rods
- Defense and naval superstructure tie rods
Machining & Welding Guidance for 5083 Bars
| Parameter | Recommendation |
|---|---|
| Recommended filler | ER5356 or ER5556 for matching strength |
| Shielding gas | Argon or argon-helium mix |
| Preheat | Generally not required for sections < 25 mm |
| Post-weld heat treatment | Not required |
| Machining | Use sharp carbide tools; keep feeds moderate to avoid work hardening |
| Threading | Standard coarse/fine threads; lubricate to prevent galling |
| Bending | O temper recommended; minimum bend radius ≥ 2× OD |
See our aluminum welding guide for detailed filler-wire selection and parameter tables.
Packaging, Inspection & Delivery
5083 bars are bundled by diameter/profile, end-capped, wrapped with VCI film and waterproof paper, then loaded into plywood crates or steel racks for ocean freight. Each shipment includes mill test certificate (MTC), chemical and mechanical reports, and EN 10204 3.1 on request. Third-party inspection (SGS, BV, TÜV) can be arranged.
Related 5083 & Marine-Grade Aluminum Products
Browse related marine-grade and bar products:
- 5083 aluminum tubes — seamless/welded marine pipe
- 5083 aluminum coils — marine-grade coil and slit coil
- 5086 aluminum bars — lighter marine welded structures
- 5052 aluminum bars — medium-strength machining bar
- 6082 aluminum bars — structural T6 bars for precision parts
- 5052 vs 5083 marine guide — alloy selection for saltwater projects
Frequently Asked Questions
What is 5083 aluminum bar used for?
5083 aluminum bar is used for marine fittings, shafts, fasteners, deck hardware, offshore platform brackets, rudder stocks and any saltwater-exposed structural component that needs high strength and corrosion resistance.
What diameters and profiles do you offer?
We supply 5083 aluminum round bar from 6 mm to 300 mm diameter, plus square, hexagonal and flat bars on request. Custom sizes up to 500 mm diameter are available.
Is 5083 bar suitable for marine use?
Yes. 5083 is a marine-grade alloy. Tempers H116 and H321 are specifically developed for saltwater service because they resist intergranular corrosion and stress corrosion cracking.
What tempers are available for 5083 aluminum bars?
Common tempers are O, H111, H112, H116 and H321. O temper is best for bending and forming, while H321 is preferred for high-strength shafts and fittings.
What is the MOQ for 5083 aluminum bars?
MOQ is 500 kg per size. Mixed loads and trial orders are negotiable.
How long is the lead time?
Stock sizes ship in 3 – 5 days; production and cutting typically take 7 – 25 days depending on quantity and specifications.
Can 5083 bar be welded?
Yes. 5083 has excellent weldability. Use ER5356 or ER5556 filler wire with argon shielding gas. Post-weld heat treatment is not required.
Can 5083 bar be machined?
Yes. Use sharp carbide tools, moderate feeds and good lubrication to avoid work hardening. 5083 machines well in H112 or H321 temper.
How does 5083 bar compare to 5086 bar?
5083 offers higher as-welded strength and is the first choice for heavy marine fittings and shafts. 5086 is slightly more formable and economical for lighter welded frames.
How does 5083 bar compare to 5052 bar?
5083 is stronger and more corrosion-resistant in saltwater, making it better for marine and offshore. 5052 is easier to machine and form and is ideal for general fasteners and brackets.
What certificates do you provide?
We provide Mill Test Certificate (MTC), chemical composition report, mechanical test report and EN 10204 3.1 certificate on request.
How do I request a quote?
Send us your required diameter/profile, temper, quantity and destination port. We will reply within 24 hours by email or WhatsApp.
Ready to Order 5083 Aluminum Bars?
Send us diameter/profile, temper, quantity and destination port. HXM Aluminum delivers marine-certified 5083 bars worldwide.
