5083 H112 Aluminum Plate | AlMg4.5Mn Marine Grade Aluminum Plate for Shipbuilding
5083 H112 aluminum plate is a marine grade aluminum-magnesium alloy plate widely used in shipbuilding, offshore engineering, transportation and cryogenic applications requiring high strength, excellent seawater corrosion resistance and superior weldability.
Manufactured from Aluminum Alloy 5083 (AlMg4.5Mn), this non-heat-treatable 5000 series aluminum alloy contains approximately 4.0%–4.9% magnesium, providing excellent structural performance in marine and industrial environments.
5083 H112 aluminum plates are commonly supplied with marine classification approvals including:
- DNV
- ABS
- BV
- LR
- CCS
- NK
We are a professional exporter, stockist and supplier of 5083 H112 aluminum plates and marine grade aluminum sheets in China.
What is 5083 H112 Aluminum Plate?
5083 aluminum alloy belongs to the aluminum-magnesium (Al-Mg) alloy family and is known for:
- excellent corrosion resistance
- high strength
- good weldability
- lightweight performance
- low-temperature toughness
5083-H112 aluminum plate is a hot rolled aluminum plate temper commonly used for:
- marine structures
- transportation equipment
- pressure vessels
- LNG applications
The H112 temper applies to aluminum products that acquire mechanical properties through hot forming processes without controlled strain hardening.
Why is 5083 H112 Aluminum Used for Shipbuilding?
5083 marine grade aluminum plate provides exceptional performance in seawater and offshore environments.
Main Advantages
- excellent seawater corrosion resistance
- lightweight structure
- high strength-to-weight ratio
- good fatigue resistance
- superior weldability
- long service life
The corrosion rate of 5083 aluminum in seawater is extremely low:
- approximately 0.025 – 0.05 mm/year
This helps reduce:
- maintenance cost
- hull corrosion
- operational downtime
5083 aluminum also retains excellent mechanical strength after welding, making it ideal for welded ship structures.
Temper Types of 5083 Aluminum Plate
5083 aluminum plates are available in various tempers depending on application requirements.
| Temper | Description |
|---|---|
| O | Annealed / Soft |
| H111 | Slightly strain hardened |
| H112 | Hot worked temper |
| H116 | Marine corrosion resistant temper |
| H32 | Quarter hard stabilized |
| H321 | Stabilized marine temper |
| H36 | 3/4 hard stabilized |
5083 H112 vs H116 vs H321 Aluminum Plate
| Temper | Main Feature | Typical Application |
|---|---|---|
| H112 | Hot rolled structural plate | Transportation & shipbuilding |
| H116 | Improved marine corrosion resistance | Hull structures |
| H321 | Stabilized marine structural plate | Offshore & shipbuilding |
H116 and H321 tempers are commonly selected for critical marine structural applications.
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 |
| Magnesium (Mg) | 4.00 – 4.90 |
| Zinc (Zn) | ≤ 0.25 |
| Titanium (Ti) | ≤ 0.15 |
| Chromium (Cr) | 0.05 – 0.25 |
| Aluminum (Al) | Balance |
The high magnesium content improves:
- marine corrosion resistance
- weldability
- structural strength
Physical Properties of 5083 Aluminum Plate
| Property | Value |
|---|---|
| Density | 2650 kg/m³ |
| Melting Point | 570°C |
| Modulus of Elasticity | 72 GPa |
| Electrical Resistivity | 0.058 × 10⁻⁶ Ω.m |
| Thermal Conductivity | 121 W/m.K |
| Thermal Expansion | 25 × 10⁻⁶ /K |
Mechanical Properties of 5083 Aluminum Plate
| Temper | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
|---|---|---|---|
| O / H111 / H112 | ≥ 275 | ≥ 125 | ≥ 16 |
| H116 | ≥ 305 | ≥ 215 | ≥ 10 |
| H321 | 305 – 385 | 215 – 295 | ≥ 12 |
5083 H112 aluminum plates provide:
- excellent structural strength
- low-temperature toughness
- reliable marine performance
Corrosion Resistance of 5083 Marine Aluminum Plate
5083 aluminum alloy is highly resistant to:
- seawater corrosion
- marine atmosphere
- salt spray environments
- industrial chemicals
The alloy provides:
- excellent intergranular corrosion resistance
- good exfoliation corrosion resistance
- long-term durability in offshore environments
These characteristics make 5083 aluminum ideal for:
- ship hulls
- offshore structures
- LNG tanks
- marine transportation systems
Weldability of 5083 H112 Aluminum Plate
5083 aluminum plate offers excellent weldability using:
- MIG welding
- TIG welding
The alloy maintains high strength after welding and is widely used for:
- welded ship structures
- marine fabrication
- transportation equipment
5083 is one of the best aluminum alloys for structural marine welding applications.
Marine Classification Society Approvals
5083 H112 aluminum plates can be supplied with marine certificates including:
- DNV
- ABS
- BV
- LR
- CCS
- NK
Marine approvals ensure compliance with:
- shipbuilding standards
- offshore engineering requirements
- marine structural specifications
5083 Marine Grade Aluminum Plate Specifications
| Product | Thickness (mm) | Width (mm) | Length (mm) |
|---|---|---|---|
| Thick Plate | 4 – 260 | 800 – 4300 | 1000 – 38000 |
| Aluminum Sheet | 0.2 – 6 | 1000 – 2600 | 1000 – 12000 |
| Hot Rolled Coil | 2.2 – 12 | 1480 – 2600 | Coil |
| Cold Rolled Coil | 0.2 – 3.5 | 500 – 2600 | Coil |
Available Tempers
- O
- H111
- H112
- H116
- H24
- H32
- H321
Surface Finish Options
5083 aluminum plates can be supplied with:
- mill finish
- polished finish
- bright finish
- customized surface treatment
Protective film coating is available upon request.
Applications of 5083 H112 Aluminum Plate
Shipbuilding Industry
- ship hull structures
- ship decks
- side plates
- bottom plating
- engine bases
Offshore Engineering
- offshore platforms
- marine working vessels
- hydrofoils
- offshore structures
Transportation Industry
- rail cars
- vehicle bodies
- truck bodies
- aircraft fuel tanks
LNG and Cryogenic Applications
5083-O aluminum alloy is widely used for:
- LNG spherical storage tanks
- cryogenic pressure vessels
- low-temperature fluid reservoirs
5083 aluminum maintains excellent toughness at cryogenic temperatures.
Product Features of 5083 Marine Aluminum Plate
Excellent Corrosion Resistance
Suitable for seawater and offshore environments.
High Strength
One of the strongest non-heat-treatable aluminum alloys.
Lightweight Performance
Improves fuel efficiency and payload capacity.
Good Weldability
Excellent performance for marine structural welding.
Non-Magnetic
Suitable for specialized marine and industrial applications.
No Low-Temperature Brittleness
Maintains toughness under cryogenic conditions.
Equivalent Standards of 5083 Aluminum Alloy
| Standard | Grade |
|---|---|
| EN | AlMg4.5Mn |
| DIN | Al Mg4.5 Mn0.7 |
| UNS | A95083 |
| GM | GM41 |
Equivalent grades may vary depending on project specifications.
Testing and Inspection
5083 H112 aluminum plates can be supplied with:
- ultrasonic testing (UT)
- dimensional inspection
- mechanical testing
- chemical analysis
- surface inspection
- corrosion testing
Third-party inspection is available upon request.
Related Products
Marine Grade Aluminum Products
- 5083 H321 Aluminum Plate
- 5086 Aluminum Plate
- 5456 Marine Aluminum Plate
Aluminum Welding Materials
- ER5183 Welding Wire
- ER5356 Aluminum Welding Wire
Why Choose Our 5083 H112 Aluminum Plate?
We provide:
- marine classification approvals
- large stock availability
- custom cutting service
- strict quality inspection
- export seaworthy packing
- fast delivery
- worldwide export support
Our 5083 H112 marine grade aluminum plates are manufactured for reliable performance in shipbuilding, transportation and offshore engineering applications.
5083 H112 Aluminum Plate
