Aluminum Alloy Flange | 5083 Aluminum Flange DIN PN10 PN16 Slip On Flange
5083 aluminum alloy flanges are lightweight, corrosion-resistant aluminum pipe flanges widely used in marine, offshore, cryogenic and industrial piping systems requiring excellent seawater resistance, good weldability and reliable low-temperature performance.
Manufactured from Aluminum Alloy 5083 (AlMg4.5Mn), these aluminum flanges provide outstanding resistance to seawater, chloride environments and industrial atmospheric corrosion, making them ideal for shipbuilding, offshore engineering and chemical processing applications.
We are a professional manufacturer and exporter of:
- Aluminum 5083 Slip On Flanges
- Aluminum 5083 Weld Neck Flanges
- Aluminum 5083 Blind Flanges
- DIN PN10 / PN16 Aluminum Flanges
- ASME B16.5 Aluminum Alloy Flanges
in China.
What is 5083 Aluminum Alloy Flange?
5083 aluminum alloy flange is a marine grade aluminum flange manufactured from aluminum-magnesium alloy 5083.
5083 aluminum alloy belongs to the 5000 series aluminum-magnesium alloys and is known for:
- excellent seawater corrosion resistance
- high strength
- lightweight performance
- good weldability
- excellent low-temperature toughness
Unlike heat-treatable aluminum alloys, 5083 aluminum achieves its strength through:
- strain hardening
- cold working processes
5083 aluminum flanges are widely used in:
- marine piping systems
- offshore engineering
- cryogenic applications
- air separation equipment
- industrial cooling systems
Types of 5083 Aluminum Flanges
We manufacture various aluminum alloy flange types including:
5083 Slip On Flange
Easy installation and suitable for low and medium pressure piping systems.
5083 Weld Neck Flange
Provides high structural strength for critical piping applications.
5083 Blind Flange
Used for pipeline isolation and pressure sealing.
5083 Flat Flange
Commonly used in DIN low-pressure piping systems.
Standards for Aluminum Alloy Flanges
5083 aluminum flanges can be manufactured according to:
| Standard | Description |
|---|---|
| ASME B16.5 | Pipe Flanges and Flanged Fittings |
| MSS SP-44 | Steel Pipeline Flanges |
| DIN 2573 | PN6 Flanges |
| DIN 2576 | PN10 Flanges |
| DIN 2501 | PN16 Flanges |
| DIN 2502 | PN16 Flanges |
| DIN 2503 | PN25 / PN40 Flanges |
| DIN 2543 | PN16 Flanges |
These standards ensure:
- dimensional accuracy
- pressure compatibility
- reliable piping connection performance
DIN Aluminum Flange Pressure Ratings
| DIN Standard | Pressure Rating |
|---|---|
| DIN 2573 | PN6 |
| DIN 2576 | PN10 |
| DIN 2501 | PN16 |
| DIN 2503 | PN25 / PN40 |
| DIN 2543 | PN16 |
DIN aluminum flanges are widely used in:
- marine piping
- industrial cooling systems
- low-pressure chemical pipelines
Standard Sizes of Aluminum Flanges
DIN Sizes
| DN Size | Inch Equivalent |
|---|---|
| DN40 | 1-1/2” |
| DN50 | 2” |
| DN65 | 2-1/2” |
| DN80 | 3” |
| DN100 | 4” |
| DN125 | 5” |
| DN150 | 6” |
| DN200 | 8” |
| DN300 | 12” |
Custom sizes are available upon request.
Aluminum Alloy Grades Available
We manufacture aluminum alloy flanges in:
- Aluminum 5052
- Aluminum 5083
- Aluminum 5086
- Aluminum 6061-T6
- Aluminum 6063-T6
Different alloys are selected according to:
- corrosion resistance requirements
- mechanical strength
- marine service conditions
- welding requirements
Aluminum 5083 vs 6061 Aluminum Flange
| Property | 5083 Aluminum | 6061 Aluminum |
|---|---|---|
| Corrosion Resistance | Excellent | Good |
| Marine Use | Excellent | Moderate |
| Strength After Welding | Excellent | Reduced |
| Heat Treatable | No | Yes |
| Typical Application | Marine & Offshore | General Structural |
5083 aluminum is generally preferred for:
- seawater service
- offshore structures
- marine piping systems
6061 aluminum is more commonly used for:
- structural applications
- machined components
- general industrial service
Chemical Composition of 5083 Aluminum Alloy
| Element | Composition (%) |
|---|---|
| Silicon (Si) | ≤ 0.40 |
| Iron (Fe) | ≤ 0.40 |
| Copper (Cu) | ≤ 0.10 |
| Manganese (Mn) | 0.40 – 1.00 |
| Chromium (Cr) | 0.05 – 0.25 |
| Magnesium (Mg) | 4.00 – 4.90 |
| Titanium (Ti) | ≤ 0.15 |
| Zinc (Zn) | ≤ 0.25 |
| Others Total | ≤ 0.15 |
The high magnesium content improves:
- marine corrosion resistance
- weldability
- structural strength
Mechanical Properties of 5083 Aluminum Flanges
| Property | Typical Value |
|---|---|
| Tensile Strength | ≥ 275 MPa |
| Yield Strength | ≥ 125 MPa |
| Elongation | ≥ 16% |
5083 aluminum alloy provides one of the highest strengths among non-heat-treatable aluminum alloys.
Corrosion Resistance of 5083 Aluminum Flanges
5083 aluminum alloy provides excellent resistance to:
- seawater corrosion
- marine atmosphere
- chloride environments
- industrial chemicals
This makes 5083 aluminum flanges ideal for:
- offshore piping systems
- marine cooling systems
- desalination plants
- chemical processing equipment
Service Temperature of 5083 Aluminum Flanges
5083 aluminum alloy is generally not recommended for continuous service temperatures above:
- 65°C
Long-term exposure to elevated temperatures may reduce:
- mechanical strength
- structural stability
5083 aluminum performs exceptionally well in:
- low-temperature service
- cryogenic environments
- marine atmospheric conditions
Marine Classification Approvals
5083 aluminum flanges can be supplied with marine approvals including:
- DNV
- ABS
- BV
- LR
- CCS
- NK
Marine certificates ensure compliance with:
- shipbuilding standards
- offshore engineering specifications
- marine structural requirements
Aluminum Flange Facing Types
Flat Face (FF)
Used for low-pressure piping systems.
Raised Face (RF)
Suitable for industrial pressure piping applications.
Facing type selection depends on:
- operating pressure
- gasket type
- piping system design
Welding of 5083 Aluminum Flanges
5083 aluminum flanges provide excellent weldability using:
- MIG welding
- TIG welding
Recommended welding wire:
- ER5183
- ER5356
5083 aluminum retains excellent mechanical properties after welding, making it suitable for:
- welded marine piping
- offshore structures
- cryogenic systems
Advantages of Aluminum Flanges Compared with Steel Flanges
| Property | Aluminum Flange | Steel Flange |
|---|---|---|
| Weight | Much Lower | Higher |
| Corrosion Resistance | Excellent | Moderate |
| Installation | Easier | Heavier |
| Marine Use | Excellent | Good |
| Maintenance Cost | Lower | Higher |
Aluminum flanges are widely selected where:
- weight reduction
- corrosion resistance
- easier handling
are important.
Manufacturing Process of 5083 Aluminum Flanges
Typical manufacturing process includes:
- rolling or forging
- CNC machining
- drilling
- facing machining
- surface finishing
- dimensional inspection
- final quality control
Strict inspection ensures:
- dimensional accuracy
- flange flatness
- reliable sealing performance
Surface Finish of Aluminum Flanges
5083 aluminum flanges can be supplied with:
- mill finish
- anodized finish
- polished finish
- sand blasted finish
Surface treatment depends on:
- project requirements
- corrosion environment
- appearance requirements
Applications of 5083 Aluminum Flanges
Marine & Shipbuilding
Used in:
- ship piping systems
- offshore platforms
- seawater cooling systems
Cryogenic Applications
Suitable for:
- LNG systems
- low-temperature pressure vessels
- air separation equipment
Chemical Industry
Used in:
- chemical transfer piping
- industrial cooling systems
- corrosive process environments
Heat Exchange Systems
Applied in:
- heat exchangers
- intercoolers
- condensers
- cooling systems
Why is 5083 Aluminum Suitable for Seawater Applications?
5083 aluminum alloy provides:
- exceptional chloride resistance
- excellent seawater corrosion resistance
- long-term durability in marine atmosphere
This makes it one of the best aluminum alloys for:
- marine piping systems
- offshore engineering
- shipbuilding applications
Testing and Inspection
5083 aluminum flanges can be supplied with:
- dimensional inspection
- PMI testing
- mechanical testing
- chemical analysis
- surface inspection
Third-party inspection is available upon request.
Packaging
Aluminum alloy flanges are packed in:
- plywood cases
- export pallets
- fumigation-free wooden cases
Suitable for international export transportation.
Frequently Asked Questions
What is 5083 aluminum flange used for?
5083 aluminum flanges are mainly used in marine, offshore, cryogenic and chemical piping systems.
Is 5083 aluminum suitable for seawater?
Yes. 5083 aluminum provides excellent seawater corrosion resistance.
What is the difference between 5083 and 6061 aluminum flange?
5083 provides better marine corrosion resistance, while 6061 offers higher machinability and is heat treatable.
Can 5083 aluminum flange be welded?
Yes. 5083 aluminum alloy provides excellent weldability using MIG and TIG welding processes.
What standards are available for aluminum flanges?
Common standards include:
- ASME B16.5
- MSS SP-44
- DIN 2573
- DIN 2576
- DIN 2501
Related Products
Aluminum Pipe Fittings
- Aluminum Elbow
- Aluminum Tee
- Aluminum Reducer
Marine Aluminum Products
- 5083 H112 Aluminum Plate
- 5083 H321 Aluminum Plate
- 5086 Aluminum Sheet
Aluminum Welding Materials
- ER5183 Welding Wire
- ER5356 Aluminum Filler Wire
Stainless Steel Flanges
- ASTM A182 F316L Flange
- Duplex Stainless Steel Flanges
Why Choose Our Aluminum Alloy Flanges?
We provide:
- custom dimensions
- marine classification approvals
- strict quality inspection
- export seaworthy packing
- fast delivery
- worldwide export support
Aluminum Alloy Flange 5083 DIN PN10
Our 5083 aluminum alloy flanges are manufactured according to international standards for reliable marine and industrial piping performance.
