877-412-3651 
Aluminum 5083
Aluminum 5083 is a high-strength, non-heat-treatable aluminum-magnesium alloy developed for use in demanding structural and corrosive environments. It offers one of the highest strength levels among the 5xxx series while maintaining excellent resistance to seawater, industrial chemicals and harsh operating conditions.
Unlike heat-treatable aluminum alloys, Aluminum 5083 achieves its strength through solid-solution strengthening from magnesium rather than precipitation hardening. This metallurgical structure allows the alloy to retain stable mechanical properties after welding, making it especially suitable for large welded assemblies and fabricated structures.
Aluminum 5083 is widely used in marine construction, shipbuilding, pressure vessels, storage tanks, cryogenic equipment, and transportation applications where reliability, corrosion resistance, and structural integrity are critical. Its performance at low temperatures also makes it suitable for LNG tanks and other cryogenic service environments.
Tech Steel & Materials supplies Aluminum 5083 in a variety of product forms with full material traceability and certification available. Value-added services such as custom cutting, machining coordination, and specialized packaging can be provided to meet customer specifications.
Frequently Asked Questions Include
What is Aluminum 5083?
Aluminum 5083 is a high-strength, non-heat-treatable aluminum-magnesium alloy known for its exceptional corrosion resistance, particularly in marine and industrial environments. It offers higher strength than Aluminum 5052 while maintaining good weldability and formability. Aluminum 5083 is commonly used in shipbuilding, pressure vessels, storage tanks, cryogenic applications, and heavy-duty structural components.
Is Aluminum 5083 weldable?
Yes, Aluminum 5083 is highly weldable and is widely used in welded structural applications. Because it’s not strengthened through heat treatment, welding does not significantly degrade its mechanical properties. Aluminum 5083 retains excellent strength and corrosion resistance in the heat-affected zone.
Is Aluminum 5083 marine grade?
Yes, Aluminum 5083 is considered a marine-grade aluminum alloy. Its high magnesium content provides outstanding resistance to seawater corrosion, making it a preferred choice for ship hulls, offshore structures, and coastal environments. Aluminum 5083 performs particularly well in continuously wet or saltwater-exposed conditions compared to many other aluminum alloys.
Select AMS
| AMS Number | Alloy | Type | UNS | Cross Ref. Spec | Misc./Shape | |
|---|---|---|---|---|---|---|
| AMS 4056 Plate | 5083 | Aluminum | A95083 | QQ-A-250/6 | Plate |
|
| AMS 4056 Sheet | 5083 | Aluminum | A95083 | QQ-A-250/6 | Sheet |
|
| AMS QQ A 200 4A Bar | 5083 | Aluminum | A95083 | QQ-A-200/4 | Bar |
|
| AMS QQ A 200 4A Extrusion | 5083 | Aluminum | A95083 | QQ-A-200/4 | Extrusion |
|
| AMS QQ A 200 4A Rod | 5083 | Aluminum | A95083 | QQ-A-200/4 | Rod |
|
| AMS QQ A 200 4A Shapes | 5083 | Aluminum | A95083 | QQ-A-200/4 | Shapes |
|
| AMS QQ A 200 4A Tubing | 5083 | Aluminum | A95083 | QQ-A-200/4 | Tubing |
|
| AMS QQ A 200 4A Wire | 5083 | Aluminum | A95083 | QQ-A-200/4 | Wire |
|
| AMS QQ A 250 6 Plate | 5083 | Aluminum | A95083 | QQ-A-250/6 | Plate |
|
| AMS QQ A 250 6 Sheet | 5083 | Aluminum | A95083 | QQ-A-250/6 | Sheet |
|
Request a Quote
Metal Weight Calculator
0 Lbs