Jan. 16, 2025
6082 O is suitable for low-strength applications that require ductility and machinability, while 6082-T6 is better suited for structural applications that require high strength and high-temperature resistance.
6082-O aluminum alloy is suitable for applications that require high ductility, machinability, and low strength. Its advantages lie in its better ductility and plasticity, making it ideal for forming applications, such as non-load-bearing structures or decorative parts in the construction industry.
6082-T6 aluminum alloy is suitable for applications that require high strength and good thermal shock resistance, particularly in aerospace, automotive, mechanical, and high-strength structural applications. Due to its excellent strength, hardness, and thermal shock resistance, 6082 aluminum alloy in T6 state is better suited for applications that endure heavy loads or high-temperature environments.
| Performance Characteristics | 6082-O Aluminum Alloy | 6082-T6 Aluminum Alloy |
| Mechanical Properties | Low strength, good ductility | High strength, high hardness, high shear strength |
| Ultimate Strength | Low | High |
| Yield Strength | Low | High |
| Hardness | Low | High |
| Elongation at Break | High (better than T6) | Lower than O state |
| Shear Strength | Relatively low | Relatively high |
| Thermal Properties | Similar | Similar |
| Electrical Properties | Similar | Similar |
| Elasticity and Strength-to-Weight Ratio | Relatively low | Relatively high (especially in axial strength and bending strength) |
| Thermal Shock Resistance | Relatively poor | Relatively good |
| Suitable Temperature Range | Suitable for medium to low-temperature environments | Suitable for high-temperature environments |
| Heat Treatment State | Annealed state, good machinability | Aged treatment, enhanced mechanical strength |
| Typical Applications | Applications requiring good ductility, machinability, and low strength, such as architectural decorative parts, frames, etc. | Structural parts requiring high strength and thermal shock resistance, such as in aerospace, automotive, and heavy-load structural components |
| Property | 6082-O Aluminum | 6082-T6 Aluminum |
| Brinell Hardness | 40 | 93 |
| Elastic (Young's, Tensile) Modulus (GPa) | 69 | 69 |
| Elongation at Break (%) | 18 | 9.8 |
| Fatigue Strength (MPa) | 91 | 95 |
| Poisson's Ratio | 0.33 | 0.33 |
| Shear Modulus (GPa) | 26 | 26 |
| Shear Strength (MPa) | 84 | 220 |
| Tensile Strength: Ultimate (UTS) (MPa) | 140 | 330 |
| Tensile Strength: Yield (Proof) (MPa) | 85 | 270 |
| Property | 6082-O Aluminum | 6082-T6 Aluminum |
| Latent Heat of Fusion (J/g) | 410 | 410 |
| Maximum Temperature: Mechanical (°C) | 170 | 170 |
| Melting Completion (Liquidus) (°C) | 650 | 650 |
| Melting Onset (Solidus) (°C) | 580 | 580 |
| Specific Heat Capacity (J/kg-K) | 900 | 900 |
| Thermal Conductivity (W/m-K) | 160 | 160 |
| Thermal Expansion (µm/m-K) | 23 | 23 |
| Property | 6082-O Aluminum | 6082-T6 Aluminum |
| Electrical Conductivity: Equal Volume (% IACS) | 42 | 42 |
| Electrical Conductivity: Equal Weight (Specific) (% IACS) | 140 | 140 |
| Characteristics/Applications | 6082-O Aluminum Alloy | 6082-T6 Aluminum Alloy |
| Ductility | Excellent, suitable for complex forming and machining | Lower, suitable for bearing larger loads but not easy to machine into complex shapes |
| Strength | Lower, suitable for non-load-bearing structures | High, suitable for bearing larger loads and high-temperature environments |
| Application Fields | Building, automotive decoration, mechanical casings, and other non-load-bearing parts | Aerospace, automotive high-strength structures, heavy mechanical components, racing parts, etc. |
| Machinability | Excellent, suitable for precision machining, bending, and welding | Poor machinability, suitable for simple machining and welding |
| Thermal Shock Resistance | Average | Good, suitable for working in high-temperature environments |
| Corrosion Resistance | Average | Good, suitable for high-strength structural parts in corrosive environments |
| Property | 6082-O Aluminum | 6082-T6 Aluminum |
| Base Metal Price (% relative) | 9.5 | 9.5 |
| Density (g/cm³) | 2.7 | 2.7 |
| Embodied Carbon (kg CO₂/kg material) | 8.3 | 8.3 |
| Embodied Energy (MJ/kg) | 150 | 150 |
| Embodied Water (L/kg) | 1170 | 1170 |
| Property | 6082-O Aluminum | 6082-T6 Aluminum |
| Resilience: Ultimate (Unit Rupture Work) (MJ/m³) | 22 | 30 |
| Resilience: Unit (Modulus of Resilience) (kJ/m³) | 52 | 540 |
| Stiffness to Weight: Axial (points) | 14 | 14 |
| Stiffness to Weight: Bending (points) | 50 | 50 |
| Strength to Weight: Axial (points) | 14 | 33 |
| Strength to Weight: Bending (points) | 21 | 39 |
| Thermal Diffusivity (mm²/s) | 67 | 67 |
| Thermal Shock Resistance (points) | 6.0 | 15 |
When choosing 6082 aluminum alloy, it is necessary to consider several factors, such as strength, ductility, thermal resistance, and load-bearing capacity. The specific choice should be based on the application requirements, environmental conditions, and performance needs. Below, we will describe in detail how to select the appropriate heat treatment state (O-state or T6-state) of 6082 aluminum alloy based on different application requirements.
| Requirement | 6082-O Aluminum Alloy | 6082-T6 Aluminum Alloy |
| Strength Requirements | Suitable for low-strength applications, such as decorative parts and non-load-bearing structures | Suitable for high-strength applications, such as aerospace, automotive, and high-strength mechanical components |
| Ductility/Machinability | Excellent, suitable for machining complex shapes | Relatively poor, suitable for simple machining or less complex structural parts |
| Thermal Resistance Requirements | Not suitable for high-temperature environments | Good, suitable for high-temperature environments and thermal shock-resistant applications |
| Corrosion Resistance Requirements | Average, suitable for non-harsh environments | Excellent, suitable for high-strength structures in corrosive environments |
| Load-Bearing Capacity | Suitable for light load, non-load-bearing applications | Suitable for key structural components that bear heavier loads |
By selecting the appropriate state of 6082 aluminum alloy based on specific application needs, the alloy can meet the engineering requirements in terms of performance, strength, thermal resistance, machinability, etc.
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