Aluminum Alloy 6061 T6 Pipe Fittings,DIN 2605-1 6061 T6 Elbow,6061 T6 Tee,6061 T6 Reducer
We manufacture and supply 6061-T6 aluminum pipe fittings, including butt-weld elbows, equal and reducing tees, concentric and eccentric reducers, return bends and pipe caps.
Our aluminum fittings can be manufactured to the applicable requirements of ASTM B361 / ASME SB-361, with finished dimensions based on ASME B16.9 or approved customer drawings.
Available products include:
- 45° and 90° butt-weld elbows
- Long-radius and short-radius elbows
- 180° return bends
- Custom 3D and 5D pipe bends
- Equal and reducing tees
- Concentric and eccentric reducers
- Aluminum pipe caps
The starting material may be supplied in 6061-T6 or another project-specified condition. Because forming and welding can alter the heat-treated condition, the properties of the finished fitting must be evaluated according to its manufacturing route and project requirements.
6061-T6 Aluminum Pipe Fitting Specifications
| Item | Available Specification |
|---|---|
| Material | Aluminum Alloy 6061 |
| UNS designation | UNS A96061 |
| Starting temper | T6 or project-specified condition |
| Fitting specification | ASTM B361 / ASME SB-361, subject to edition review |
| Dimensions | ASME B16.9 pattern or approved drawing |
| Weld-end preparation | ASME B16.25 reference or project specification |
| Products | Elbow, tee, reducer, cap and custom pipe bend |
| Elbow angles | 45°, 90° and 180° |
| Radius | LR 1.5D, SR 1D, custom 3D or 5D |
| Size range | 1/2–20 in, subject to technical review |
| Wall thickness | Schedule or specified numerical wall thickness |
| Construction | Formed, machined or fabricated |
| Connection | Butt welding |
| Inspection | Visual, dimensional, wall-thickness and NDT as specified |
| Packing | Fumigation-free wooden case or pallet |
| Documentation | Material certificate and inspection reports |
What Is Aluminum Alloy 6061-T6?
6061 aluminum is a heat-treatable aluminum-magnesium-silicon alloy known for its combination of strength, machinability, corrosion resistance and weldability.
The T6 temper is produced through solution heat treatment followed by artificial aging. It provides higher strength than annealed 6061-O and naturally aged 6061-T4.
Typical characteristics include:
- Medium-to-high strength
- Good machining performance
- Good atmospheric corrosion resistance
- Good weldability
- Good anodizing response
- Low material density
- Wide availability in extruded and machined product forms
Hydro identifies 6061 as a commonly available heat-treatable alloy and notes that welding is practical, although welds in the T6 condition may lose strength unless suitable re-heat treatment and aging are performed.
Typical Chemical Composition of 6061
| Element | Content, wt.% |
|---|---|
| Silicon, Si | 0.40–0.80 |
| Iron, Fe | Maximum 0.70 |
| Copper, Cu | 0.15–0.40 |
| Manganese, Mn | Maximum 0.15 |
| Magnesium, Mg | 0.80–1.20 |
| Chromium, Cr | 0.04–0.35 |
| Zinc, Zn | Maximum 0.25 |
| Titanium, Ti | Maximum 0.15 |
| Other elements, each | Maximum 0.05 |
| Other elements, total | Maximum 0.15 |
| Aluminum, Al | Remainder |
Final chemical acceptance must follow the ordered material specification and supplied material certificate.
6061-T6 Aluminum Elbows
90° Long-Radius Elbow
A 6061-T6 long-radius elbow normally has a centerline radius of approximately 1.5 times the nominal pipe diameter.
LR elbows provide a smoother change in flow direction and are commonly selected where reducing turbulence and pressure loss is important.
90° Short-Radius Elbow
A short-radius elbow normally has a centerline radius of approximately one nominal pipe diameter.
SR elbows are used where installation space is limited. The sharper direction change should be considered during piping-system design.
Custom 3D and 5D Bends
Custom 3D and 5D aluminum pipe bends provide a larger bending radius than standard LR elbows.
They are manufactured according to approved drawings and should be specified by:
- Outside diameter
- Wall thickness
- Bend angle
- Centerline radius
- Tangent length
- Minimum finished wall thickness
6061 Aluminum Tees
Available tee configurations include:
- Equal tee
- Reducing tee
- Formed tee
- Fabricated welded tee
- Custom branch fitting
A 6061 equal tee has the same run and branch diameter. A reducing tee connects a smaller branch to a larger main run.
A product should only be described as a seamless formed tee when the actual manufacturing process produces the component without a fusion-welded seam.
6061 Aluminum Reducers and Caps
Available reducer types include:
- Concentric reducer
- Eccentric reducer
- Seamless formed reducer
- Fabricated reducer
- Custom transition piece
For an eccentric reducer, the required orientation should be identified as:
- Flat on top
- Flat on bottom
- Drawing-defined orientation
6061 aluminum caps can be supplied for closing pipe ends, equipment connections and fabricated aluminum assemblies.
ASTM B361 and ASME B16.9
ASTM B361-16(2024) covers factory-made wrought aluminum and aluminum-alloy welding fittings. Permitted manufacturing operations include pressing, rolling, extrusion, bending and fusion welding, using approved wrought starting-material forms such as bar, forging, plate, seamless pipe or seamless tube.
ASME B16.9-2024 covers overall dimensions, tolerances, ratings, testing and marking for factory-made wrought butt-welding fittings from NPS 1/2 through NPS 48.
The standards serve different purposes:
| Standard | Main Function |
|---|---|
| ASTM B361 / ASME SB-361 | Material, manufacturing and testing requirements for aluminum welding fittings |
| ASME B16.9 | Butt-weld fitting dimensions, tolerances and geometry |
| ASME B16.25 | Butt-welding-end preparation |
| ASTM B241 / ASME SB-241 | Seamless pipe or seamless extruded tube used as raw material |
| ASTM B221 / ASME SB-221 | Extruded tube or profile used as approved raw material |
| ASTM B209 / ASME SB-209 | Plate used for fabricated fittings |
Compliance with ASTM B361 should be confirmed against the 6061 alloy, temper, fitting construction and edition specified in the purchase order.
A complete product description may be written as:
Aluminum Alloy 6061-T6, 90° Long-Radius Butt-Weld Elbow, manufactured to applicable ASTM B361 requirements, with dimensions based on ASME B16.9.
DIN 2605-1 Dimensional Requests
DIN 2605-1 was a standard for steel butt-welding elbows and bends. It has been withdrawn and replaced by European standards for steel fittings. It is not an aluminum fitting material standard.
Where a legacy project requires DIN 2605 geometry, the fitting can be evaluated against an approved customer drawing.
The correct description is:
6061 aluminum elbow manufactured to an approved drawing based on legacy DIN 2605 dimensions.
It should not be described as a fully compliant DIN 2605-1 aluminum fitting.
Applications
6061 aluminum pipe fittings may be considered for:
- Lightweight industrial piping
- Transportation equipment
- Heat-transfer equipment
- Equipment manifolds
- General machinery
- Marine auxiliary equipment
- Structural aluminum assemblies
- Irrigation systems
- Custom aluminum pipe spools
Final suitability depends on the process medium, design pressure, temperature, welding condition, fatigue loading and galvanic-corrosion risk.
For direct seawater exposure or higher-strength welded marine piping, compare 6061 with our 5083 Aluminum Pipe Fittings.
Related Aluminum Products
| Product Page | Recommended Requirement |
|---|---|
| 6061-T6 Aluminum Flanges | Forged and machined aluminum flanges |
| ASTM B361 Aluminum Pipe Fittings | Aluminum welding-fitting specification |
| 6060- Aluminum Elbows | Medium-strength extruded aluminum elbows |
| EN AW-6060 Aluminum Tee | Equal and reducing aluminum tees |
| 5052 Aluminum Pipe Fittings | Formable elbows, reducers and stub ends |
| 5083 Aluminum Pipe Fittings | Higher-strength marine fittings |
| 90 Degree 5083 Aluminum Elbow | Marine LR and SR elbows |
Frequently Asked Questions
Does ASTM B361 cover 6061-T6 fittings?
ASTM B361 covers factory-made wrought aluminum and aluminum-alloy welding fittings. Compliance must be confirmed against the alloy, temper, product type and ordered standard edition.
Can 6061 fittings use ASME B16.9 dimensions?
Yes. ASME B16.9 may be used as the dimensional pattern, but it does not independently establish the 6061 material condition or pressure capability.
Is DIN 2605-1 applicable to aluminum elbows?
No. DIN 2605-1 was a withdrawn steel elbow standard. Legacy dimensions may only be used through an approved project drawing.
Does welding reduce 6061-T6 strength?
Yes. Welding can reduce strength in the weld and heat-affected zone. Finished-joint properties must be evaluated according to the applicable design and welding requirements.
What is the difference between an elbow and a 3D or 5D bend?
Standard LR and SR elbows normally use 1.5D and 1D radii. A 3D or 5D bend has a larger customized centerline radius and is manufactured according to a drawing.
6061-T6 Aluminum Pipe Fittings Manufacturer
We manufacture 6061-T6 aluminum elbows, tees, reducers, caps and custom pipe bends according to project drawings and technical requirements.
Products can be supplied with material traceability, dimensional inspection, NDT and export documentation according to the agreed inspection plan.
We are the professional manufacturer of Aluminum alloy Butt Weld Pipe Fittings
6061 T6 elbow according to ANSI/ASME B16.9 and DIN 2605-1
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