Aluminum sheet plate alloy 5454 5456 h116 h321
Aluminum sheet plate alloys 5454 and 5456 with tempers H116 and H321 are widely recognized in the aluminum industry for their excellent combination of corrosion resistance, strength, and formability. These aluminum-magnesium alloys are typically used in marine applications, construction, and general engineering where durability and weldability are critical.
- Alloy Series: 5xxx series (Aluminum-Magnesium alloy)
- Common Forms: Sheet and plate
- Tempers: H116 (strain hardened and partially annealed) and H321 (strain hardened and stabilized by stretch)
- Primary Characteristics: Excellent corrosion resistance, moderate-to-high strength, good weldability, excellent performance in marine environments
Chemical Composition
The chemical composition of Alloy 5454 and 5456 is strictly controlled to maintain performance characteristics. The tables below illustrate the typical percentage ranges for each alloy:
| Element | Alloy 5454 (wt %) | Alloy 5456 (wt %) |
|---|---|---|
| Aluminum (Al) | Remainder | Remainder |
| Magnesium (Mg) | 4.7 - 5.5 | 5.0 - 6.0 |
| Manganese (Mn) | 0.5 - 1.0 | 0.2 - 0.5 |
| Iron (Fe) | ≤ 0.4 | ≤ 0.5 |
| Silicon (Si) | ≤ 0.25 | ≤ 0.25 |
| Chromium (Cr) | 0.05 - 0.2 | 0.05 - 0.25 |
| Copper (Cu) | ≤ 0.1 | ≤ 0.1 |
| Zinc (Zn) | ≤ 0.1 | ≤ 0.1 |
| Titanium (Ti) | ≤ 0.2 | ≤ 0.2 |
| Others (each) | ≤ 0.05 | ≤ 0.05 |
| Others (total) | ≤ 0.15 | ≤ 0.15 |
Temper Designations Explained
| Temper | Description | Properties |
|---|---|---|
| H116 | Strain hardened suitable for marine service — provides moderate strength and good corrosion resistance | Seawater corrosion resistance, good weldability |
| H321 | Strain hardened and stabilized by stretch — offers better mechanical properties and less tendency to residual stress | Improved stress corrosion cracking resistance and better thermal stability |
Mechanical Properties
| Property | 5454-H116 | 5454-H321 | 5456-H116 | 5456-H321 |
|---|---|---|---|---|
| Tensile Strength (MPa) | 250 – 350 | 280 – 370 | 270 – 360 | 300 – 380 |
| Yield Strength (MPa) | 140 – 240 | 160 – 260 | 160 – 270 | 180 – 290 |
| Elongation at Break (%) | ≥ 10 | ≥ 8 | ≥ 10 | ≥ 8 |
| Hardness (Brinell) | 60 – 90 | 70 – 100 | 70 – 95 | 75 – 105 |
| Density (g/cm³) | 2.66 | 2.66 | 2.66 | 2.66 |
Physical and Thermal Properties
| Property | Value | Units |
|---|---|---|
| Melting Point | 570 – 650 | °C |
| Electrical Conductivity | 25 – 35 | % IACS |
| Thermal Conductivity | 130 – 150 | W/m·K |
| Coefficient of Thermal Expansion | 23 | µm/m-K |
| Modulus of Elasticity | 70 | GPa |
Features and Benefits
- Corrosion resistance: Exceptional resistance against seawater, industrial atmospheres, and chemical agents because of magnesium content.
- Weldability: Alloys 5454 and 5456 weld well using conventional techniques; H116 and H321 tempers maintain better corrosion resistance after welding.
- Strength and Formability: Good mechanical strength combined with excellent formability; H321 temper improves ductility with low residual stress.
- Surface Finish: Available in mill finish or finished forms ideal for painting, anodizing, or laminating.
- Versatile Thickness Range: From thin sheets (1 mm) to thick plates (up to 200 mm), serving various structural and functional requirements.
- UV Resistance: Suitable for outdoor use with prolonged exposure to sunlight without significant degradation.
Common Applications
| Industry | Typical Uses Example | Alloy / Temper |
|---|---|---|
| Marine | Ship hulls, decks, dinghies, sailboat parts, offshore equipment | 5454-H116, 5456-H321 |
| Transportation | Truck and trailer panels, bus bodies, shipping containers | 5454-H116, 5456-H321 |
| Construction | Roofing, siding panels, cladding, architectural trims | 5454-H116 |
| Electrical | Busbars, conductor sheets, and housings | 5456-H321 |
| Chemical Handling | Storage tanks, valves, and duct work housing corroding substances | 5454-H116 |
Aluminum alloys 5454 and 5456 in H116 and H321 tempers form a reliable material choice offering excellent corrosion resistance, favorable mechanical properties, and weldability, making them ideal for demanding environments such as marine, transportation, construction, and chemical industries. Their balanced chemistry ensures longevity and strength without sacrificing workability or finishing options.
We recommend consultation with your engineering and design team to select the temper and alloy most suited for your specific application.
Request a Quote or Technical Support
For more detailed technical sheets, custom thickness inquiries, or bulk orders, please contact our sales representative or engineering support team. We provide tailored solutions and rigorous quality assurance to fit your project's nuances.
This technical briefing on Aluminum Sheet Plate Alloy 5454 5456 H116 H321 is accurate as of the Knowledge Cutoff date.
https://www.alusheets.com/a/aluminum-sheet-plate-alloy-5454-5456-h116-h321.html
