5059-H111 Aluminum vs. 5059-H116 Aluminum
Last Updated :
5059-H111 aluminum and 5059-H116 aluminum are different heat treatment conditions of 5059 aluminum alloy, with the main difference lying in the processing and strengthening of their mechanical properties.
- 5059-H111 is more suitable for applications that require greater plastic deformation, welding, or deep processing. It has better ductility and formability, but relatively lower strength and fatigue performance.
- 5059-H116, on the other hand, is more suitable for applications that require higher strength, fatigue resistance, and corrosion resistance. It undergoes strengthening treatment, offering higher tensile strength, better fatigue resistance, and greater stress resistance.
The choice of which condition of 5059 aluminum alloy to use depends on the specific application requirements: if higher ductility and formability are needed, H111 can be chosen; while for higher strength and fatigue resistance, especially in harsh environments, H116 is recommended.
5059-H111 Aluminum vs. 5059-H116 Aluminum Mechanical Properties
| Property | 5059-H111 Aluminum | 5059-H116 Aluminum |
| Elastic (Young's, Tensile) Modulus, GPa | 69 | 69 |
| Elongation at Break, % | 25 | 11 |
| Fatigue Strength, MPa | 170 | 210 |
| Poisson's Ratio | 0.33 | 0.33 |
| Shear Modulus, GPa | 26 | 26 |
| Shear Strength, MPa | 230 | 250 |
| Tensile Strength: Ultimate (UTS), MPa | 360 | 410 |
| Tensile Strength: Yield (Proof), MPa | 180 | 300 |
5059-H111 Aluminum Alloy
The H111 condition refers to aluminum alloy that has undergone a certain degree of strain hardening, but with a relatively low level of hardening, lower than the strength limits allowed by the H11 condition (hardness only reaching 1/8 of the allowed value). This condition is mainly achieved through cold working processes such as extrusion and rolling.
Features of 5059-H111 Aluminum Alloy
- High ductility: 5059-H111 has a high elongation at break (about 25%), meaning it has better plasticity and formability, making it suitable for applications that require significant plastic deformation.
- Suitable scenarios: Due to its high ductility, it is suitable for parts requiring plastic deformation, welding, and other processing operations, especially in marine and ocean environments, where it can withstand certain impacts and stresses.
5059-H116 Aluminum Alloy
The H116 condition is a state that has undergone more stringent heat treatment and strain hardening. To achieve the H116 condition, 5059 aluminum alloy must undergo further treatment to create specific levels of intergranular corrosion and exfoliation corrosion, typically controlled through annealing or heat treatment processes to improve the material's corrosion resistance.
Features of 5059-H116 Aluminum Alloy
- Higher strength: 5059-H116 has significantly higher tensile strength (ultimate tensile strength 410 MPa, yield tensile strength 300 MPa) than 5059-H111. This means it is stronger when subjected to tensile and other mechanical stresses, making it suitable for high-stress environments.
- Fatigue resistance: 5059-H116 has a higher fatigue strength (210 MPa), which makes it perform better in applications requiring high fatigue resistance, especially in structural parts and environments with strict fatigue performance requirements over time.
- Suitable scenarios: 5059-H116 is mainly used in environments requiring high strength and corrosion resistance, such as marine structures, ships, offshore platforms, etc., where the material's fatigue and stress resistance are crucial.
How to Choose Between 5059-H111 and 5059-H116 Aluminum Alloys?
| Selection Criteria | 5059-H111 Aluminum Alloy | 5059-H116 Aluminum Alloy |
| Main Features | Good ductility and processing performance. | Underwent more heat treatment to provide higher strength and fatigue resistance. |
| Ductility | High ductility, with a break elongation rate of 25%, suitable for applications requiring large deformation. | Lower ductility, with a break elongation rate of 11%, suitable for applications with higher strength requirements. |
| Suitable Scenarios | Suitable for welding, bending, forming, and processing. | Suitable for environments requiring high strength and fatigue resistance, such as structural parts, offshore platforms, etc. |
| Suitable for parts requiring higher ductility, such as ship parts, marine equipment, etc. | Suitable for long-term use in high-stress environments, and applications that endure repetitive fatigue stress. | |
| Processing Difficulty | Lower processing difficulty, suitable for parts that require complex forming and welding. | Higher processing difficulty, requires more strict control, but its enhanced performance is suitable for high-stress structures. |
| Corrosion Resistance | Performs excellently in marine and saltwater environments, suitable for marine and ship applications. | Also has good corrosion resistance, but its corrosion resistance and fatigue resistance are stronger, suitable for harsh environments. |
| Application Environment | More suitable for low to medium strength requirements, such as general marine equipment, structural parts in low-stress environments. | Suitable for high strength and high fatigue requirement environments, such as offshore platforms, ship hulls, and long-term use structural parts. |
| Durability and Fatigue Performance | Less durable, suitable for low fatigue load environments. | Strong fatigue resistance, capable of withstanding larger repetitive loads, suitable for long-term use. |
| Cost | Lower cost due to its simpler heat treatment process, suitable for applications with limited budgets. | Higher cost, due to the need for more complex heat treatment processes, suitable for applications requiring higher strength. |
| Recommended Choice | Suitable for low-strength environments requiring higher ductility and processability. | Suitable for applications with high strength, fatigue resistance, and corrosion resistance, especially structural parts in high-stress environments. |
| If parts require significant plastic deformation, welding, or deep processing. | If the application requires high durability and fatigue resistance, such as ships, offshore platforms, etc. |
Further reading: 5059 5086 Marine Grade Aluminum Bars 5059 Marine Grade Aluminum Plate Sheet 5059 H116 Aluminum 5059 H111 Aluminum 5059 H321 Aluminum
Tags: Marine Aluminum 5059
