Henan Gnee New Material Co., Ltd. is one of the most reliable manufacturers and suppliers of 5086 Aluminum Round Bar in China. With abundant experience, we warmly welcome you to wholesale high quality 5086 Aluminum Round Bar in stock here from our factory. Good service and reasonable price are available.
Introduction of 5086 aluminum round bar
Round bar is produced by extrusion (most common) or by cold finishing for tighter tolerances, and it is used where good corrosion resistance in seawater and reliable weldability matter more than very high strength.
Compared with 5083, 5086 has slightly less magnesium and a little lower strength, which makes it a practical choice for welded marine and structural parts that do not need the full 5083 specification. It keeps its toughness down to cryogenic temperatures, so it is also used in storage and transport of liquefied gases.
Chemical composition of 5086 aluminum alloy
Composition limits below are per ASTM B221 and EN 573-3 (weight %). Aluminum is the balance.
| Element | Min (%) | Max (%) |
|---|---|---|
| Silicon (Si) | - | 0.40 |
| Iron (Fe) | - | 0.50 |
| Copper (Cu) | - | 0.10 |
| Manganese (Mn) | 0.20 | 0.70 |
| Magnesium (Mg) | 3.5 | 4.5 |
| Chromium (Cr) | 0.05 | 0.25 |
| Zinc (Zn) | - | 0.25 |
| Titanium (Ti) | - | 0.15 |
| Each other | - | 0.05 |
| Total others | - | 0.15 |
| Aluminum (Al) | remainder | remainder |
Mechanical properties of 5086 aluminum round bar
5086 is strain-hardenable, not heat-treatable. Values below are representative for extruded and cold-finished bar per ASTM B221 / EN 755; ASTM minimums are a little lower and the actual figures are confirmed on the mill certificate.
| Temper | Product form | Tensile strength | Yield strength | Elongation |
|---|---|---|---|---|
| O | Bar | 255 MPa (37 ksi) | 115 MPa (17 ksi) | 18% |
| H111 / H112 | Extruded bar | 275 MPa (40 ksi) | 150 MPa (22 ksi) | 12–14% |
| H34 | Cold-worked bar | 325 MPa (47 ksi) | 255 MPa (37 ksi) | 10% |
H112 is the standard as-extruded condition for structural bar. H34 is used when higher strength is needed and welding is limited.
Physical properties of 5086 aluminum bar
| Property | Value |
|---|---|
| Density | 2.66 g/cm³ (0.096 lb/in³) |
| Melting range (solidus–liquidus) | 570–640 °C (1058–1184 °F) |
| Specific heat (at 100 °C) | 900 J/(kg·K) |
| Thermal conductivity | ≈120 W/(m·K) |
| Electrical conductivity | ≈24% IACS |
| Modulus of elasticity | 71 GPa (10,300 ksi) |
Dimensional tolerances for 5086 aluminum round bar
Tolerances follow ANSI H35.2(M). Extruded bar uses Table 10.1b (5086 is an "other alloy", not 6063); cold-finished (drawn/peeled) bar uses the tighter Table 9.1. Diameter tolerances (± mm):
| Diameter (mm) | Cold-finished (Table 9.1) | Extruded, other alloy (Table 10.1b) |
|---|---|---|
| 12.50–25.00 | 0.050 | 0.23 |
| 25.00–50.00 | 0.08 | 0.30 |
| 50.00–100.00 | 0.15 | 0.61 |
| 100.00–150.00 | - | 0.86 |
| 150.00–200.00 | - | 1.10 |
Straightness: cold-finished bar 2 mm/m; rolled bar 4 mm/m; extruded bar 1 mm/m (except O temper). Rolled-bar diameter over 40 mm uses the wider rolled limits (e.g. 40–50 mm: 0.15 mm cold-finished, 0.20 mm rolled). Buyer-specified single-side tolerances are quoted case by case.
specification of 5086 aluminum round bar
| Item | Specification |
|---|---|
| Alloy | 5086 |
| Tempers | O, H111, H112, H34 |
| Diameter range | 6–300 mm (typical supply range; larger diameters on request) |
| Length range | 1000–6000 mm standard; longer lengths on request |
| Product forms | Extruded bar, cold-finished (drawn/peeled) bar |
| Standards | ASTM B221, EN 573-3, EN 755 |
| MOQ | Flexible - trial and small orders are accepted and quoted on the same terms |
| Lead time | 15–30 days for standard specifications |
| Packing | Seaworthy export packing: PVC film, interleaving paper, edge protectors, wooden pallet or case, steel hoops |
| Certification | EN 10204 3.1 mill test certificate as standard; 3.2 and third-party inspection available on request |
| Trade terms | FOB, CIF; payment by T/T or L/C |
Applications of 5086 aluminum round bar
5086 round bar is used where corrosion resistance and weldability come first:
Shipbuilding and marine. Shafting, fairleads, deck fittings, superstructure members and other parts exposed to seawater.
Offshore and coastal structures. Platform components, piers and seawater-handling equipment that must resist corrosion without heavy coating.
Pressure and cryogenic equipment. Storage and transport parts for liquefied gases, where 5xxx alloys keep toughness at low temperature.
Welded frames and structures. General welded fabrication in transport, rail and architecture where painting or anodizing is applied.
Machined parts. Bushes, spacers and components machined from H112 or H34 bar.
Machining and fabrication of 5086 aluminum
5086 machines acceptably in H112 and H34 with standard tooling, though it work-hardens, so keep the feed up and the tool sharp. In the O temper it is soft and gummy, so machining is easier in H112/H34.
Weldability is good - this is the main reason to choose 5086. It welds with MIG/TIG using 5356 or 5183 filler (5183 for maximum joint strength and marine service). As a non-heat-treatable alloy, welding does not reduce strength by heat treatment, only by the annealed heat-affected zone, and strength is restored by choosing the right temper. It is not heat-treatable, so fabrication relies on cold work and welding rather than solution heat treatment.
Processing services for 5086 aluminum round bar
To shorten your lead time, we can process material before shipment:
Cut-to-length sawing to your required bar length
CNC turning and milling of diameters, faces and features
Drilling, chamfering and countersinking
Peeling and straightening for precision cold-finished bar
Surface preparation for anodizing or coating on request
Send your drawing or cut list and we will quote the processed part, not just the raw bar.
About GNEE
GNEE has supplied aluminum products since 2008 and ships to more than 100 countries, handling both stock lengths and mill-produced special sizes.
Common diameters and tempers are kept in stock, so repeat and small orders can ship without waiting for an extrusion slot; non-standard diameters and lengths are produced to order.
Order size is not a barrier - trial quantities and full containers are quoted on the same terms, so you can order the length and quantity you actually need.
Standard specifications are delivered in 15–30 days; we confirm the date against the current production schedule before you place the order.
Every shipment includes an EN 10204 3.1 mill test certificate, and 3.2 certification with third-party inspection can be arranged when the project requires it.
Our sales engineers read your drawings and ask about load, environment and fabrication method before recommending a temper, and will tell you if a specification does not fit the job.
FAQ
What tempers are available for 5086 round bar?
O, H111, H112 and H34. H112 is the standard as-extruded condition for structural bar; H34 gives higher strength when welding is limited.
Is 5086 aluminum weldable?
Yes, very well. It welds with MIG/TIG using 5356 or 5183 filler. As a non-heat-treatable alloy it is a standard choice for welded marine and structural fabrication.
What is the typical lead time and MOQ?
Standard specifications ship in 15–30 days. Minimum order quantity is flexible; small trial orders are accepted and quoted on the same terms as large ones.
Can you provide a mill test certificate?
Yes. EN 10204 3.1 is supplied with every shipment. EN 10204 3.2 with third-party inspection can be arranged on request.
Is 5086 aluminum export-controlled?
No. 5086 is a 5xxx alloy and is not on China's dual-use export control list, so no special export screening applies and it ships under normal trade terms.
Which industries use 5086 round bar?
Shipbuilding and marine, offshore and coastal structures, cryogenic and pressure equipment, and general welded fabrication - wherever corrosion resistance and weldability lead.
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