Differences-Between-Tempers-of-5083-Aluminium-Flat-Plate.pdf
5083 Aluminum Sheet – High-Strength Marine Grade Alloy
5083 aluminum sheet is an Al-Mg-Si alloy recognized for its excellent corrosion resistance, superior weldability, good cold workability, and medium strength. These characteristics make it an ideal material for manufacturing aircraft fuel tanks, oil pipes, transport vehicles, ship sheet metal parts, correctors, street lamp brackets, rivets, and electrical components, among others.
Through careful alloy composition design, optimized melting and casting processes, homogenization heat treatment, and rolling technology improvements, GNEE 5083 aluminum plates fully meet customer requirements-especially for the production of marine-grade aluminum sheets, rail transit components, automotive parts, and molds that demand exceptional processing performance.
5083 Aluminum for Marine Applications
5083 plate is one of the most widely recognized marine-grade aluminum alloys, commonly used in yacht hulls, fishing vessels, and cruise ships. The typical temper supplied is EN AW 5083 H321.
Compared with traditional steel plates, 5083 aluminum plates are lighter in weight, more corrosion-resistant, and longer-lasting, making them an increasingly preferred alternative for marine structures.
Main Features:
Low density and high strength-designed specifically for marine use, offering significant performance advantages and strong comparability.
Corrosion-resistant and durable-providing long service life, high economic value, and environmental benefits.
During production, a small amount of beryllium (Be) is added to reduce ingot cracking tendencies and enhance the surface quality of rolled sheets.
GNEE marine-grade aluminum 5083 has obtained major classification society certifications, including CCS, ABS, DNV, LR, and BV.
The sheets feature superior surface quality, with no oil stains, no waves, no scratches, no rolling marks, and clean, burr-free cutting edges.
Scope
Aluminium 5083 is renowned for its exceptional performance in harsh and extreme environments. It demonstrates high resistance to seawater and industrial chemicals and maintains excellent strength after welding. It has the highest strength among non-heat-treatable alloys, though it is not recommended for use above 65°C.
Applications
5083 aluminum is widely used in:
Pressure vessels
Tip truck bodies
Railcars
Shipbuilding
Vehicle bodies
Mine skips and cages
Supplied Forms
Sheet
Plate
Alloy Designations
5083 corresponds to several designations, including GM41, A95083, AlMg4.5Mn, and AlMg4.5Mn0.7.
Common Tempers
The most frequently used tempers for 5083 aluminum include:
O (Soft)
H111 – Lightly strain-hardened by shaping processes
H32 – Work-hardened and stabilized by low-temperature heat treatment to achieve quarter-hard condition
Fabrication Characteristics
| Property | Performance |
|---|---|
| Solderability | Poor |
| Weldability – Gas | Average |
| Weldability – Arc | Excellent |
| Weldability – Resistance | Excellent |
| Brazability | Poor |
| Cold Workability | Average |
| Machinability | Poor |
Welding
When welding 5083 aluminum to itself or other alloys within the same series, the recommended filler metal is 5183, with 5356 and 5556 also suitable alternatives.
Corrosion Resistance
Corrosion resistance is one of the most outstanding characteristics of this alloy. It performs exceptionally well in environments involving seawater and high temperatures, which makes it a preferred material in chemical processing facilities where exposure to corrosive substances is common.
Heat Resistance
Aluminium 5083 exhibits excellent thermal and heat resistance. It is often used in high-temperature applications such as engines and furnaces.
With its high melting point, it can withstand temperatures of up to 500°C without notable loss of strength or formability. Additionally, its excellent thermal conductivity makes it ideal for components that require both heat resistance and heat dissipation, such as engine blocks and exhaust systems.
Machining
While 5083 aluminum is relatively soft and easy to machine, its low ductility helps maintain dimensional accuracy during complex machining processes. It also causes less wear on cutting tools, enabling efficient and precise production of intricate parts.
Conclusion
GNEE 5083 aluminum sheet combines high strength, superior corrosion resistance, and excellent weldability, making it a top choice for marine, transportation, chemical, and structural applications.
Whether used in shipbuilding, automotive manufacturing, or industrial equipment, 5083 aluminum continues to prove its reliability and value as a durable, lightweight, and environmentally friendly engineering material.
Chemical Compositions
| Element | % Present |
|---|---|
| Manganese (Mn) | 0.40 - 1.00 |
| Iron (Fe) | 0.40 Typical |
| Copper (Cu) | 0.10 Typical |
| Magnesium (Mg) | 4.00 - 4.90 |
| Silicon (Si) | 0.40 Typical |
| Zinc (Zn) | 0.25 Typical |
| Titanium (Ti) | 0.15 Typical |
| Aluminium (Al) | Balance |
Mechanical properties at room temperature
| Property | Value |
|---|---|
| Proof Strength | 145 MPa |
| Tensile Strength | 300 MPa |
| Elongation | 23% |
| Shear Strength | 175 MPa |
| Hardness Vickers | 75 HV |
Reference data for some physical properties (for guidance only)
| Property | Value |
|---|---|
| Density | 2.65 Kg/m3 |
| Melting Point | 570 °C |
| Thermal Expansion | 25 x 10⁻⁶ / K |
| Modulus of Elasticity | 72 GPa |
| Thermal Conductivity | 121 W/m.K |
| Electrical Resistivity | 0.058 x 10⁻⁶ Ω.m |
