Gnee Steel (Tianjin) Co., Ltd. is one of the most reliable manufacturers and suppliers of 5086 h111 aluminum alloy tube in China. With abundant experience, we warmly welcome you to wholesale high quality 5086 h111 aluminum alloy tube in stock here from our factory. Good service and reasonable price are available.
5086 H111 Aluminum Alloy tube Description
When building marine structures or high-pressure systems, using standard commercial aluminum tubing often leads to two major failures: rapid seawater corrosion and weld joint cracking. For heavy-duty applications exposed to harsh saltwater and dynamic stress, you cannot compromise on materials.
The 5086-H111 aluminum tube is specifically engineered to solve these problems. Recognized globally as a premium marine-grade aluminum pipe, it offers exceptional resistance to seawater, superior weld strength, and reliable load-bearing capacity.
At GNEE, we manufacture and supply certified 5086-H111 aluminum pipes to shipyards, offshore contractors, and heavy fabricators worldwide. Whether you need heavy-wall seamless pipes or precision extruded tubes, we deliver the exact specifications your engineering team requires.
What is 5086-H111 Aluminum Tube?
The 5086 alloy belongs to the 5000-series aluminum-magnesium family. The "H111" temper is the most critical part of this specification.
It means the aluminum tube has been annealed and then slightly strain-hardened during the forming process (such as extrusion or drawing).
This specific temper provides a perfect balance: it is strong enough to handle structural loads but retains enough ductility to be bent, formed, and machined without cracking. Unlike the highly rigid H32 or H116 tempers, H111 offers optimal formability for piping systems that require complex routing.
Key Advantages of 5086 Marine-Grade Aluminum Pipe
- Exceptional Seawater Resistance: With a high magnesium content (up to 4.5%), 5086 aluminum tubing does not require painting or coating to survive in marine environments. It naturally forms a dense oxide layer that prevents pitting and crevice corrosion in salt water.
- High Structural Strength: 5086 aluminum offers significantly higher tensile and yield strength compared to standard 5052 tubing. It is built to absorb impact and carry heavy loads in offshore platforms and boat hulls.
- Superior Post-Weld Strength: Many aluminum alloys lose up to 50% of their strength at the weld joint. 5086 retains excellent mechanical properties after MIG or TIG welding, making it the safest choice for welded pressure vessels and structural frames.
- Versatile Product Forms: 5086 aluminum tubes are available in multiple forms, including seamless, extruded, and drawn tubes, as well as round, square, and rectangular shapes.
- DNV/ABS Certification Ready: As a standard marine material, 5086 pipes can be easily certified by major marine classification societies, ensuring your project passes final safety inspections.
Equivalent specifications of 5086 aluminium pipe
| EU EN | USA | Germany DIN,WNr | Japan JIS | France AFNOR | Russia GOST | Inter ISO | UNS |
| ENAW-AlMg4 | 5086 | 3.3545 AlMg4Mn | 5086 | 5086 A-G4MC | AMg4 AMg4.5 | AlMg4Mn | A95086 |
Mechanical Properties of 5086-H111 Aluminum Tube
| Property | Value |
|---|---|
| Tensile Strength | 240 – 300 MPa |
| Yield Strength | 95 – 140 MPa |
| Elongation | 12 – 20% |
| Hardness (HB) | 65 – 85 |
| Density | 2.66 g/cm³ |
| Elastic Modulus | ~70 GPa |
Chemical Composition of 5086 Aluminum Tube
| Element | Content (%) |
|---|---|
| Magnesium (Mg) | 3.5 – 4.5 |
| Manganese (Mn) | 0.20 – 0.70 |
| Chromium (Cr) | 0.05 – 0.25 |
| Silicon (Si) | ≤ 0.40 |
| Iron (Fe) | ≤ 0.50 |
| Copper (Cu) | ≤ 0.10 |
| Zinc (Zn) | ≤ 0.25 |
| Aluminum (Al) | Remainder |
Seamless 5086 Aluminum Pipe vs. Extruded Tube
GNEE manufactures 5086 pipes in different forming methods based on your working pressure.
- Seamless 5086 Aluminum Pipe (ASTM B241): Extruded over a mandrel. There is no weld seam anywhere in the tube. This is mandatory for high-pressure gas lines, hydraulic systems, and critical pressure vessels where a seam failure would be catastrophic.
- Structural Extruded 5086 Tube (ASTM B221): Extruded through a porthole die. It contains microscopic weld seams. It is highly cost-effective and perfectly safe for handrails, boat masts, and general structural frames that do not hold high internal pressure.
Welding and Fabrication Guide for 5086 Tubing
To help your fabrication team achieve the best results, follow these guidelines:
- Welding: We recommend using ER5356 or ER5183 filler wire for welding 5086 aluminum pipes. These filler metals match the magnesium content, ensuring maximum joint strength and corrosion resistance.
- Bending: Thanks to the H111 temper, this pipe can be rotary-draw bent. For standard wall thicknesses, use a minimum bend radius of 3 times the outer diameter (3D) to prevent wrinkling or cracking.
Main Applications of 5086 Marine Aluminum Tubing
Because of its toughness, 5086 is specified globally for:
- Shipbuilding & Marine: Ship hull structural frames, deck stanchions, boat railings, and seawater cooling pipes.
- Offshore Engineering: Helicopter deck supports, oil rig piping systems, and desalination plant pipelines.
- Pressure Equipment: Cryogenic storage tanks, compressed air lines, and high-pressure hydraulic fluid lines.
- Transportation: Heavy-duty trailer frames, military vehicle components, and railway tank cars.
5086 H111 Aluminum Alloy Tube Specifications
| Alloy | 5052/5083/5086/5005/5251 |
| Temper | O/H112/H32/H34/H36/H38/H321/H116/H112/H111 |
|
Shape |
Round, Square, Rectangular, and specialized hollow profiles. |
|
Surface |
Chemical Treatment: Oxidization, Powder-coated,Mechanical Treatment: Polishing, Brushed, Sand Blasted |
| Outer Diameter | 4-600mm |
| WT | 1-25MM (Sch 10, Sch 40, Sch 80 available). |
| Length | 5-20,000 mm |
| Standard | EN AW/AMS/ASTM/GB/ISO9001 |
| We also offer custom cut-to-length services with precise tolerances so the tubes arrive ready for your assembly line. | |
About GNEE
GNEE ensures zero defects through our strict QC system.
- Testing: Every batch undergoes 100% PMI (Positive Material Identification) testing, ultrasonic flaw detection (for seamless pipes), and hydrostatic testing (if required).
- Packaging: Pipes are wrapped in waterproof plastic, bundled with wooden supports, and packed in seaworthy wooden crates to prevent bending or scratching during ocean transit.
Get a Quick Quote for 5086-H111 Aluminum Tube
Stop risking your marine projects with uncertified materials. At GNEE, we provide reliable metal solutions backed by real data.
Send us your inquiry today to get:
- A competitive price quote within 24 hours.
- Free MTC (Mill Test Certificate) review for your project.
- Free sample pieces for testing before placing a bulk order.
Please email us your required Outer Diameter (OD), Wall Thickness (WT), Length, and quantity to get started!
FAQ
Hot Tags: 5086 h111 aluminum alloy tube, China 5086 h111 aluminum alloy tube manufacturers, suppliers, factory, 3003 Aluminum Inner Grooved Tube, Round Aluminium Pipe, 1 Aluminum Round Tubing