5456 H116 Aluminum
5456 aluminum alloy is a high-strength aluminum alloy widely used in marine, shipbuilding, offshore engineering, and other corrosion-resistant structural components. It has excellent seawater corrosion resistance, making it especially suitable for use in marine environments. The H116 temper is 5456 aluminum alloy that has undergone special heat treatment processes (such as low-temperature aging) to improve its corrosion resistance and strength, making it particularly suitable for marine environments that require higher strength.
5456 H116 Aluminum Chemical Composition
| Alloy | 5456 | |
| Si | ≦0.25 | |
| Fe | ≦0.4 | |
| Cu | ≦0.1 | |
| Mn | 0.50-1.0 | |
| Mg | 4.70-5.50 | |
| Cr | 0.05-0.20 | |
| Zn | ≦0.25 | |
| Ti | ≦0.2 | |
| Zr | - | |
| Standard | EN573 | ASTM B928 |
H116 Temper Heat Treatment Process
The H116 temper is produced through heat treatment processes such as low-temperature aging, aiming to enhance corrosion resistance while ensuring the strength of the aluminum alloy. This temper treatment is typically performed at low temperatures to ensure the aluminum alloy has excellent seawater corrosion resistance, especially against intergranular corrosion and exfoliation corrosion, making it suitable for components exposed to marine environments for long periods.
5456 H116 Aluminum Characteristics
Corrosion Resistance
The main advantage of 5456 H116 aluminum alloy is its excellent seawater corrosion resistance, particularly in marine environments, where it effectively resists corrosion phenomena such as intergranular corrosion and exfoliation corrosion. This makes it widely used in shipbuilding, offshore platforms, and marine engineering equipment.
High Strength
Compared to H111 and H112 tempers, the H116 temper of 5456 aluminum alloy has higher strength, making it suitable for structural applications that require higher strength. This high strength allows H116 aluminum alloy to maintain stability even under harsh marine environmental conditions.
Good Weldability
5456 H116 aluminum alloy has good weldability, making it particularly suitable for large components that require welding, such as ship structures and offshore platforms. It is less likely to experience cracking or degradation of properties in the heat-affected zone during welding.
High Temperature Resistance
Although the H116 temper primarily focuses on corrosion resistance, it also maintains some stability at higher temperatures, making it suitable for certain high-temperature environments.
Strong Adaptability
This aluminum alloy is adaptable to various marine environments, including salt spray corrosion in coastal areas, underwater equipment, offshore platforms, and ship structures, providing long-term stable performance.
5456 H116 Aluminum Applications
Shipbuilding Industry
Due to its excellent corrosion resistance and high strength, 5456 H116 aluminum alloy is widely used in the manufacturing of ship structures, including hull plates, porthole frames, decks, and watertight bulkheads.
Offshore Platforms
5456 H116 aluminum alloy is also significantly used in the structural components of offshore platforms, particularly in equipment that must withstand long-term exposure to marine climates, such as offshore drilling platforms and offshore wind power platforms.
Marine Engineering Equipment
5456 H116 aluminum alloy is used in marine engineering equipment, such as subsea pipelines, submersibles, and marine survey equipment, providing long-term stable performance in harsh environments like seawater and salt mist.
Corrosion-Resistant Structural Components
Due to its outstanding corrosion resistance, 5456 H116 aluminum alloy is commonly used to manufacture various corrosion-resistant structural components, such as seawater pumps, valves, and ship radiators.
Underwater Applications
Additionally, it is used in facilities or components that are exposed to underwater conditions for extended periods, such as underwater pipelines and subsea structures.
5456 H116 Aluminum Mechanical Properties
| Property | Value |
| Young's Modulus | 70, 000 MPa |
| Ultimate Strength | 285–315 MPa |
| Yield Strength | 200–230 MPa (depending on material grade) |
5456 H116 sheet and plate (regular) Aluminium Properties
| Unit System | tmin | tmax | Young's Modulus, E | Ultimate Strength, Fu | Yield Strength, Fy | Fwu | Fwy | Poisson's Ratio, ν | Density, ρ | Thermal Expansion Coef., α | kt |
| Metric | 30 | 40 | 70, 000 MPa | 305 MPa | 215 MPa | 285 | 125 | 0.33 | 2, 700 kg/m3 | 0.4 1/°C | 1 |
5456 H116 sheet and plate (thick) Aluminium Properties
| Unit System | tmin | tmax | Young's Modulus, E | Ultimate Strength, Fu | Yield Strength, Fy | Fwu | Fwy | Poisson's Ratio, ν | Density, ρ | Thermal Expansion Coef., α | kt |
| Metric | 40 | 80 | 70, 000 MPa | 285 MPa | 200 MPa | 285 | 125 | 0.33 | 2, 700 kg/m3 | 0.4 1/°C | 1 |
5456 H116 sheet and plate (thin) Aluminium Properties
| Unit System | tmin | tmax | Young's Modulus, E | Ultimate Strength, Fu | Yield Strength, Fy | Fwu | Fwy | Poisson's Ratio, ν | Density, ρ | Thermal Expansion Coef., α | kt |
| Metric | 2 | 30 | 70, 000 MPa | 315 MPa | 230 MPa | 285 | 125 | 0.33 | 2, 700 kg/m3 | 0.4 1/°C | 1 |
Comparison of 5456 Aluminum Properties in Different Heat Treatment Conditions
5456 aluminum alloy is a high-strength alloy commonly used in the marine and shipbuilding industries, with excellent corrosion resistance, especially suitable for environments that require seawater corrosion resistance. It exhibits different mechanical properties and applications depending on its heat treatment condition.
5456 aluminum alloy has distinct performance characteristics and applications in different heat treatment states. Conditions such as H111, H112, and H116 are suitable for shipbuilding, marine engineering, and corrosion-resistant structural components, while H32, H321, and O states are more appropriate for structural applications that require further processing or higher strength.
- H111 Temper: Suitable for general requirements in shipbuilding, marine engineering, and corrosion-resistant structural components. It offers a certain level of corrosion resistance but has lower strength.
- H112 Temper: This temper offers slightly better performance than H111, with improved mechanical properties and corrosion resistance, making it suitable for general structural components.
- H116 Temper: Enhanced corrosion resistance and strength through special heat treatment processes. It is especially suitable for structural components exposed to higher strength requirements and long-term seawater exposure, such as ships, offshore platforms, and other marine engineering equipment.
- H32, H321, and O Temper: These tempers are more suitable for structural applications that require further processing or higher strength. H32 and H321 offer higher strength, making them suitable for complex parts that require machining, while O temper is suitable for aluminum alloys that need further processing.
5456 H116 aluminum alloy, with its excellent corrosion resistance, high strength, and good weldability, is a key material in the marine and shipbuilding industries. Its specialized heat treatment state ensures long-term stability in seawater corrosion and salt mist environments, making it crucial for applications in offshore platforms, ship structures, and corrosion-resistant equipment.
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