Aluminum Alloy 3003 H112 Elbow | 3003 Aluminum Pipe Fittings ASME B16.9 Butt Weld Elbow
Aluminum Alloy 3003 H112 elbows are lightweight, corrosion-resistant butt weld pipe fittings widely used in chemical processing, air separation plants, pressure vessels, HVAC systems, and industrial piping applications. Manufactured in accordance with ASME B16.9 dimensional standards, 3003 H112 aluminum elbows provide excellent formability, weldability, and long-term corrosion resistance while maintaining a cost-effective solution for low to medium-pressure piping systems.
As one of the most commonly used manganese-alloyed aluminum grades, 3003 H112 offers higher strength than 1100 aluminum while retaining excellent workability and fabrication characteristics.
We are a professional manufacturer and exporter of Aluminum Alloy 3003 H112 pipe fittings in China, supplying 3003 elbows, tees, reducers, caps, and custom aluminum butt weld fittings for industrial and marine applications worldwide.
What is Aluminum Alloy 3003 H112?
Aluminum 3003 is an aluminum-manganese alloy containing approximately 1.0–1.5% manganese, providing improved mechanical strength compared with commercially pure aluminum grades.
The H112 temper indicates that the material has obtained its mechanical properties through hot working processes and meets specified mechanical property requirements without additional heat treatment.
Key Benefits of 3003 H112 Aluminum Fittings
- Excellent corrosion resistance
- Lightweight compared to steel and stainless steel
- Good weldability and fabrication properties
- Higher strength than 1060 and 1100 aluminum
- Good thermal conductivity
- Suitable for pressure vessels and chemical equipment
- Cost-effective alternative to stainless steel in non-critical applications
Aluminum Alloy 3003 H112 Pipe Fittings Product Range
We manufacture a complete range of aluminum alloy butt weld fittings, including:
Elbows
- 45° Elbow
- 90° Long Radius Elbow
- 90° Short Radius Elbow
- 180° Return Bend
Tees
- Equal Tee
- Reducing Tee
Reducers
- Concentric Reducer
- Eccentric Reducer
Aluminum 3003 H112 Elbow Specifications
| Item | Description |
|---|---|
| Material | Aluminum Alloy 3003 H112 |
| Standard | ASME B16.9 / ASTM B361 |
| Type | Butt Weld Pipe Fittings |
| Elbow Angle | 22.5°, 30°, 45°, 60°, 90°, 180° |
| Radius | 1D, 1.5D, 3D, 5D, 6D, 8D, 10D |
| Size Range | 1/2″ to 48″ |
| Wall Thickness | SCH 10, SCH 20, SCH 40, SCH 80, SCH 160 |
| End Connection | Butt Weld Beveled Ends |
| Manufacturing | Seamless / Fabricated |
| Surface Finish | Mill Finish, Polished |
Chemical Composition of Aluminum Alloy 3003
| Element | Content (%) |
|---|---|
| Aluminum (Al) | Balance |
| Manganese (Mn) | 1.0 – 1.5 |
| Copper (Cu) | 0.05 – 0.20 |
| Silicon (Si) | ≤ 0.60 |
| Iron (Fe) | ≤ 0.70 |
| Zinc (Zn) | ≤ 0.10 |
| Others | ≤ 0.15 |
Mechanical Properties of 3003 H112
| Property | Typical Value |
|---|---|
| Tensile Strength | ≥ 110 MPa |
| Yield Strength | ≥ 85 MPa |
| Elongation | ≥ 10% |
| Density | 2.73 g/cm³ |
| Melting Range | 643 – 654°C |
Manufacturing Standards
Our aluminum alloy pipe fittings are produced using materials conforming to international standards, including:
- ASTM B209 – Aluminum Alloy Sheet & Plate
- ASTM B210 – Drawn Seamless Aluminum Tubes
- ASTM B211 – Aluminum Alloy Bar & Rod
- ASTM B221 – Extruded Aluminum Alloy Tube
- ASTM B241 – Seamless Aluminum Pipe & Tube
- ASTM B247 – Aluminum Forgings
- ASTM B361 – Factory-Made Wrought Aluminum Butt Weld Fittings
- ASTM B429 – Structural Aluminum Pipe & Tube
- ASTM B483 – Drawn Aluminum Tubes
Why Choose 3003 H112 Aluminum Elbows?
Compared with carbon steel fittings, Aluminum 3003 H112 elbows offer:
| Property | Aluminum 3003 H112 | Carbon Steel |
|---|---|---|
| Weight | Very Light | Heavy |
| Corrosion Resistance | Excellent | Moderate |
| Weldability | Excellent | Good |
| Thermal Conductivity | Excellent | Moderate |
| Maintenance Cost | Low | Higher |
| Service Life | Long | Moderate |
Applications of Aluminum 3003 Pipe Fittings
Chemical Processing Industry
Widely used in chemical storage tanks, piping systems, and process equipment requiring corrosion resistance.
Air Separation Plants
Ideal for oxygen, nitrogen, and industrial gas processing systems.
Heat Exchangers
Excellent thermal conductivity improves heat transfer efficiency.
Pressure Vessels
Commonly used in lightweight pressure vessel fabrication.
HVAC Systems
Used in cooling systems, ventilation equipment, and refrigeration installations.
Marine & Offshore Applications
Provides reliable performance in coastal and marine environments.
Food Processing Equipment
Suitable for non-toxic and corrosion-resistant piping systems.
Inspection & Quality Control
All Aluminum 3003 H112 pipe fittings can be supplied with:
- Chemical Composition Analysis
- Mechanical Testing
- Dimensional Inspection
- Visual Examination
- PMI Testing
- Third-Party Inspection (SGS, BV, TÜV, DNV)
- EN 10204 3.1 Material Test Certificate
Available Aluminum Alloy Grades
In addition to 3003 H112, we also manufacture:
- 1060 Aluminum Fittings
- 1100 Aluminum Fittings
- 5083 Aluminum Fittings
- 5086 Aluminum Fittings
- 5052 Aluminum Fittings
- 6061-T6 Aluminum Fittings
- 6063-T6 Aluminum Fittings
- 6082-T6 Aluminum Fittings
How to Order Aluminum 3003 H112 Elbows
Example 1
Product: Aluminum Alloy Elbow
Material: 3003 H112
Type: 90° Long Radius Elbow
Size: 6″
Thickness: SCH 40
Standard: ASME B16.9
Ends: Butt Weld Beveled Ends
Quantity: 50 PCS
Example 2
Product: Aluminum Alloy Elbow
Material: 3003 H112
Type: 45° Elbow
Size: DN200
Thickness: SCH STD
Radius: 1.5D
Standard: ASME B16.9
Quantity: 30 PCS
