5383-H32 Aluminum vs. 5456-H32 Aluminum
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5383 H32 and 5456-H32 are both aluminum alloys in the H32 temper, characterized by stability after strain hardening. The strength of this temper is between the annealed (O) state and the fully hardened (H38) state, roughly one-quarter of the strength of the fully hardened alloy. Although their processing and strength distributions are similar, there are distinct differences in mechanical properties and suitability for various applications.
5383-H32 Aluminum and 5456-H32 Aluminum Differences
| Property | 5383-H32 | 5456-H32 |
| Tensile Strength | Moderate | Slightly higher |
| Elongation (Ductility) | Moderate | Higher |
| Fatigue Strength | Moderate | Superior |
| Shear Strength | Moderate | Slightly better |
| Fracture Toughness | Moderate | Better resistance to cracking |
| Corrosion Resistance | Excellent | Excellent |
| Applications | Marine hulls, superstructures | Marine structures, pressure vessels |
| Workability | Moderate | Better |
Although 5383-H32 and 5456-H32 are both high-quality materials used for marine and structural applications, 5456-H32 generally offers higher mechanical strength, fatigue resistance, and ductility, making it a better choice for high-stress and high-performance applications. 5383-H32 is suitable for environments with lower demands, where corrosion resistance is critical, but the material is not subjected to extreme stress or fatigue. The choice between the two alloys depends on the specific requirements for strength, ductility, fatigue resistance, and operating conditions.
5383 H32 Aluminum vs. 5456-H32 Aluminum Mechanical Properties
| Property | 5383-H32 | 5456-H32 |
| Strength | Between O (annealed) and H38 (fully hardened) | Slightly higher than 5383-H32 due to alloy composition and microstructure |
| Tensile Strength | Good tensile strength | Marginally higher tensile strength, suitable for moderate to high loads |
| Elongation (Ductility) | Moderate elongation (ductility) | Better elongation, higher ductility, more deformation before breaking |
| Fatigue Strength | Moderate | Superior fatigue strength, better for cyclic loading or fluctuating stresses |
| Shear Strength | Moderate | Slightly better shear strength, enhances performance in shear stress applications |
| Fracture Toughness | Moderate | Better resistance to cracking under stress or fatigue conditions, more reliable in extreme environments |
| Property | 5383-H32 Aluminum | 5456-H32 Aluminum |
| Elastic (Young's, Tensile) Modulus, GPa | 68 | 68 |
| Elongation at Break, % | 8.4 | 12 |
| Fatigue Strength, MPa | 200 | 210 |
| Poisson's Ratio | 0.33 | 0.33 |
| Shear Modulus, GPa | 26 | 26 |
| Shear Strength, MPa | 200 | 210 |
| Tensile Strength: Ultimate (UTS), MPa | 340 | 340 |
| Tensile Strength: Yield (Proof), MPa | 250 | 250 |
5383-H32 Aluminum vs. 5456-H32 Aluminum Thermal Properties
| Property | 5383-H32 Aluminum | 5456-H32 Aluminum |
| Latent Heat of Fusion, J/g | 390 | 390 |
| Maximum Temperature: Corrosion, °C | 65 | 65 |
| Maximum Temperature: Mechanical, °C | 200 | 190 |
| Melting Completion (Liquidus), °C | 650 | 640 |
| Melting Onset (Solidus), °C | 540 | 570 |
| Specific Heat Capacity, J/kg-K | 900 | 900 |
| Thermal Conductivity, W/m-K | 130 | 120 |
| Thermal Expansion, µm/m-K | 24 | 24 |
5383-H32 Aluminum vs. 5456-H32 Aluminum Electrical Properties
| Property | 5383-H32 Aluminum | 5456-H32 Aluminum |
| Electrical Conductivity: Equal Volume, % IACS | 29 | 29 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 97 | 97 |
5383-H32 Aluminum vs. 5456-H32 Aluminum Alloy Composition
Both alloys belong to the 5xxx series, which is renowned for its excellent corrosion resistance, especially in marine environments.
The precise chemical compositions of 5383 and 5456 may vary slightly, but their primary alloying element is magnesium. These alloys are typically used in similar applications, such as marine structures, pressure vessels, and other components exposed to harsh environments.
| Element | 5383-H32 Aluminum | 5456-H32 Aluminum |
| Aluminum (Al), % | 92 to 95.3 | 92 to 94.8 |
| Chromium (Cr), % | 0 to 0.25 | 0.050 to 0.2 |
| Copper (Cu), % | 0 to 0.2 | 0 to 0.1 |
| Iron (Fe), % | 0 to 0.25 | 0 to 0.4 |
| Magnesium (Mg), % | 4.0 to 5.2 | 4.7 to 5.5 |
| Manganese (Mn), % | 0.7 to 1.0 | 0.5 to 1.0 |
| Silicon (Si), % | 0 to 0.25 | 0 to 0.25 |
| Titanium (Ti), % | 0 to 0.15 | 0 to 0.2 |
| Zinc (Zn), % | 0 to 0.4 | 0 to 0.25 |
| Zirconium (Zr), % | 0 to 0.2 | 0 |
| Residuals, % | 0 | 0 to 0.15 |
5383-H32 Aluminum and 5456-H32 Aluminum Corrosion Resistance
Due to their high magnesium content, both alloys exhibit excellent corrosion resistance, especially in marine environments. These alloys are designed to withstand exposure to saltwater, making them ideal choices for marine and offshore industrial applications.
There is little performance difference between the two alloys under specific corrosion conditions, such as galvanic corrosion.
5383-H32 Aluminum and 5456-H32 Aluminum Applications
| Aluminum Alloy Type | Description |
| 5383-H32 Aluminum | 5383-H32 aluminum is commonly used in marine applications, such as hull coatings and superstructure components, particularly in environments that require high corrosion resistance without extreme mechanical stress. Its excellent corrosion resistance makes it an ideal choice in the marine industry for preventing seawater corrosion, especially for structures exposed to milder mechanical loads. |
| 5456-H32 Aluminum | 5456-H32 aluminum is widely used in marine structures and pressure vessels due to its exceptional fatigue resistance, shear strength, and ductility. It is particularly suitable for applications requiring superior overall mechanical properties. It is extensively used in fuel tanks, pressure vessels, and other high-stress marine environments, providing excellent strength and durability to withstand harsh working conditions. |
5383-H32 Aluminum and 5456-H32 Aluminum Workability and Formability
Both alloys exhibit moderate formability in the H32 temper, but 5456-H32 generally performs better in workability due to its higher ductility. This is particularly important in manufacturing processes such as welding and machining, which require a balance between strength and formability.
Further reading: 5083 5383 O H112 Marine Grade Aluminum Bars 5456 5454 5754 Marine Grade Aluminum Bar 5383 Marine Grade Aluminum Plate Sheet 5456 Marine Grade Aluminum Plate Sheet Marine Grade Aluminum Round Bar 5754 5454 5456 5456 H111 Aluminum 5456 H112 Aluminum 5456 H116 Aluminum 5456 H32 Aluminum 5456 H321 Aluminum 5456 O Aluminum 5383 H112 Aluminum 5383 H321 Aluminum 5383 H116 Aluminum 5383 H34 Aluminum 5383 H32 Aluminum 5383 H111 Aluminum 5383 O Aluminum
