1100 O H14 H18 H112 Aerospace Aluminum Tube Pipe Description
Many buyers mistakenly believe that all "aerospace aluminum" must be ultra-strong, rigid materials like the 7000 or 2000 series. But in real-world aircraft manufacturing, not every part holds the weight of the wings. What about the low-pressure fluid lines? The internal HVAC ducting? The heat exchangers?
For these applications, engineers don't need extreme strength-they need extreme purity, perfect formability, and zero risk of corrosion. This is exactly where our AA1100 aluminum tube and pipe comes in.
AA1100 is commercially pure aluminum (≥99.0% purity). It is extremely soft, highly conductive, and completely immune to most corrosive environments.
Chemical Composition of 1100 Aluminum Tubing
The reason this alloy performs so well in corrosive environments is its lack of major alloying elements. It is essentially pure metal.
| Element | Content (%) | What It Means for Buyers |
| Aluminum (Al) | ≥ 99.00 | Delivers superior corrosion resistance and high electrical/thermal conductivity. |
| Copper (Cu) | 0.05 – 0.20 | Added in tiny amounts to slightly improve workability without sacrificing purity. |
| Iron + Silicon (Fe + Si) | ≤ 1.00 | Naturally occurring impurities that are strictly controlled to maintain the metal's soft, ductile nature. |
| Zinc (Zn) | ≤ 0.10 | Capped at a very low level to prevent galvanic corrosion issues. |
| Manganese (Mn) | ≤ 0.05 | Kept to a minimum to ensure the alloy remains highly formable. |
Mechanical Properties of 1100 Seamless Pipe
Because 1100 is pure aluminum, it cannot be hardened by heat treatment. Factories use "cold working" (like rolling or drawing) to increase its strength. Here is how the mechanical properties change based on the temper you choose.
| Temper | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Condition |
| 1100-O | 70 – 95 | 20 – 35 | ≥ 25% | Fully Annealed (Softest) |
| 1100-H14 | 90 – 110 | 35 – 50 | ≥ 10% | Half-Hard |
| 1100-H18 | 110 – 130 | 75 – 95 | Low | Full-Hard |
| 1100-H112 | ~ 90 | ~ 30 | Medium | As-Fabricated |
How to read this data: Notice how low the yield strength of the "O" temper is (only 20-35 MPa). This means you can easily bend a thin 1100-O tube with your hands. It is strictly a non-load-bearing material.
Key Features of 1100 Extruded Aluminum Tube
- Extreme Corrosion Resistance: The pure aluminum instantly forms a protective oxide layer. It will not rust or degrade even when exposed to harsh aviation fuels, lubricants, or weather.
- Unmatched Formability: It can be spun, deep-drawn, and bent into extremely tight coils without fracturing.
- Excellent Thermal Conductivity: Perfect for transferring heat away from critical aircraft systems.
- High Electrical Conductivity: Often used as protective shielding for heavy electrical cabling inside the fuselage.
- Easy Weldability: It can be welded quickly and safely using standard TIG or MIG processes without losing joint integrity.
Aerospace Applications for AA1100 Aluminum Pipe
Important Engineering Rule: Never use AA1100 for structural frames, landing gear, or high-pressure hydraulics. It will fail under heavy stress.
However, it is the perfect material for the following practical aerospace and aviation applications:
- Low-Pressure Fuel and Oil Lines: Transferring fluids internally where pressure is minimal but corrosion resistance must be 100%.
- Heat Exchangers and Radiators: Bent into tight coils to manage air conditioning or cooling systems inside commercial aircraft.
- HVAC Ducting: Used in the environmental control systems (ECS) to guide cabin air. The lightweight nature helps reduce total aircraft weight.
- Insulation Jacketing: Acting as a protective, non-sparking outer sleeve for bundles of electrical wires.
- Non-Load-Bearing Cabin Components: Decorative trims, lightweight galley (kitchen) equipment, and lavatory water lines.
Specifications for AA1100 Aluminum Pipe
| Alloy | 1100 |
| Temper | O H14 H18 H112 |
| Aluminum tube outer diameter range | 2-1000mm |
| Wall thickness | 0.5-50mm |
| Standard | GB∕T 33230-2016,ASTM B241,ASTM B221, |
| Manufacturing Process | Hot extrusion, seamless extrusion, and cold drawn tube options available. |
Are you designing a fluid transfer line but aren't sure if 1100 aluminum can handle your internal pressure? Don't guess. Send your CAD drawings or working pressure requirements to GNEE. Our technical team will calculate the stress loads and recommend whether you need 1100-O, 1100-H14, or a stronger alloy like 5052-at no cost to you.
Use this simple guide before you buy:
| If you are ordering... | Choose this Temper | Why? |
| For tight bending, coiling, or flaring | 1100-O | It is fully annealed. It will bend easily without cracking on the outside radius. |
| For general fabrication and light machining | 1100-H14 | Half-hard provides enough stiffness so the pipe keeps its straight shape, but can still take gentle bends. |
| For straight fluid lines that need maximum stiffness | 1100-H18 | Full-hard. Do not try to bend this. It is used when the pipe must remain rigid. |
| For basic industrial pipes straight from the extruder | 1100-H112 | As-fabricated. Cost-effective when you don't need highly controlled mechanical properties. |
Why Choose GNEE as Your 1100 Tube Supplier?
- 100% Certified Material: Every batch of ASTM B241 1100 aluminum pipe comes with a complete Mill Test Certificate (MTC), proving its chemical composition and mechanical performance.
- Full Range of Pipe & Tube: Whether you need a extruded tube or precision 1100 aluminum cold-drawn tube, we manufacture it.
- Customization Experts: We don't just sell standard stock. We cut to length, customize wall thicknesses, and provide specific tempers based on your exact engineering requirements.
- Global Export Experience: From proper sea-freight packaging (preventing white rust and transit damage) to handling complex customs paperwork, we ensure your material arrives safely, anywhere in the world.
- Fast Delivery: With a massive raw material inventory and highly efficient production lines, we offer some of the shortest lead times in the industry for custom orders.
Ready to place an order or check today's prices?
Get direct factory pricing on all custom 1100-O extruded pipe and 1100-H14 seamless aluminum tubing.
Request your free Mill Test Certificate (MTC) sample.
Flexible MOQ (Minimum Order Quantity) for trial runs.
Send us your sizes and tempers, and our sales engineers will provide a detailed quote within 24 hours.
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