5754 Mill Finish Aluminum Sheet Plate
5754 mill finish aluminum sheet plate is a non-heat-treatable Al-Mg alloy with excellent corrosion resistance, medium-to-high strength, and very good formability. It is widely used in marine, transportation, pressure vessel, and architectural applications where durability, weight savings, and weldability are critical.
Alloy designation: 5754
Temper range (common): O, H111, H114, H22, H24, H32, H34
Product form: Sheet, plate (mill finish, uncoated surface)
Main strengthening element: Magnesium (Mg ~3%)
5754 belongs to the 5xxx series (Al-Mg) alloys. It offers higher strength than 5052, with similar corrosion resistance, and is commonly used where both formability and structural performance are required.
characteristics at a glance
- Medium-to-high strength among non-heat-treatable alloys
- Excellent resistance to seawater and industrial atmospheres
- Very good weldability (MIG, TIG, laser, friction stir)
- Good cold formability (bending, rolling, deep drawing)
- Non-heat-treatable; strengthened by strain hardening
- Good surface quality in mill finish for painting, powder coating, or anodizing (decorative or protective)
2. Chemical Composition
Typical chemical composition of 5754 aluminum alloy (wt.%):
| Element | Min (%) | Max (%) | Function / Influence |
|---|---|---|---|
| Mg | 2.6 | 3.6 | Main strengthening element, corrosion resistance |
| Mn | – | 0.50 | Improves strength, recrystallization control |
| Si | – | 0.40 | Impurity; excessive amounts reduce corrosion resistance |
| Fe | – | 0.40 | Impurity; controlled to maintain toughness |
| Cu | – | 0.10 | Kept low to maximize corrosion resistance |
| Cr | – | 0.30 | Grain refinement, improves toughness |
| Zn | – | 0.20 | Typically low, affects stress corrosion behavior |
| Ti | – | 0.15 | Grain refiner during casting |
| Others (each) | – | 0.05 | Residual elements |
| Others (total) | – | 0.15 | Residual elements total |
| Al | Balance | Balance | Aluminum base |
Note: Values may vary slightly by standard (EN, ASTM) and producer. Always confirm with mill certificates for critical projects.
3. Mechanical Properties
Typical room-temperature mechanical properties for 5754 mill finish sheet/plate (reference values, not for design without verification):
3.1 Typical Mechanical Properties (Sheet, 1–6 mm)
| Temper | Yield Strength Rp0.2 (MPa) | Tensile Strength Rm (MPa) | Elongation A50 (%) | Notes |
|---|---|---|---|---|
| O | 80–120 | 190–230 | 18–25 | Annealed, maximum formability |
| H111 | 110–160 | 200–250 | 14–22 | Slightly strain-hardened |
| H22 | 160–210 | 220–270 | 10–16 | Half-hard, good forming |
| H24 | 180–230 | 230–280 | 8–14 | Half-hard, better strength |
| H32 | 170–220 | 220–270 | 10–16 | Controlled strain-hardening |
| H34 | 190–240 | 230–290 | 8–12 | Harder temper, higher strength |
3.2 Typical Physical Properties
| Property | Typical Value |
|---|---|
| Density | ~2.66–2.68 g/cm³ |
| Melting range | ~580–640 °C |
| Modulus of elasticity E | ~70 GPa |
| Poisson’s ratio | ~0.33 |
| Coefficient of thermal expansion (20–100 °C) | ~23.5 × 10⁻⁶ /K |
| Thermal conductivity | ~130–150 W/m·K |
| Electrical conductivity | ~30–35 % IACS |
4. Technical Specifications & Dimensional Range
5754 mill finish sheet/plate is commonly supplied under EN and ASTM standards, among others. Typical commercial ranges are shown below (actual availability varies by producer):
4.1 Standards & Designations
| Region / System | Standard / Designation | Notes |
|---|---|---|
| EN / Europe | EN AW-5754 | Common in sheet and plate |
| ASTM / SAE | 5754 (similar to 5454/5052 family, check substitutability) | Some regions use cross-refs |
| ISO | ISO 209: 5754 | International designation |
4.2 Typical Dimensional Range (Guideline)
| Product Form | Thickness (mm) | Width (mm) | Length (mm) |
|---|---|---|---|
| Sheet (coil / cut-to-length) | 0.5 – 6 | 800 – 2000 | 1000 – 6000 (or coil) |
| Plate | 6 – 80 | 1000 – 2500 | 2000 – 12000 |
| Custom cut panels | By agreement | By agreement | By agreement |
Surface finish: Mill finish (as-rolled). Suitable for subsequent:
- Painting / powder coating
- Anodizing (protective or decorative)
- Lamination (films, protective foils)
5. Performance Characteristics
5.1 Corrosion Resistance
5754 provides excellent corrosion resistance, particularly:
| Environment | Performance Level | Comments |
|---|---|---|
| Marine / seawater splash zone | Very good – excellent | Common for decks, hull components, superstructures |
| Industrial atmosphere | Excellent | Good resistance to pollutants, mild chemicals |
| Freshwater & humidity | Excellent | Minimal pitting when properly finished |
| Stress corrosion cracking | Good (under proper design) | Mg level balanced for SCC resistance |
Low copper content is to its strong corrosion resistance, making 5754 a preferred alloy in saltwater and chemically exposed environments.
5.2 Formability & Fabrication
5754 in O, H111, H22, and H24 tempers is highly formable:
- Bend radii down to 1–2× thickness (depending on temper and direction)
- Suitable for deep drawing, roll forming, spinning, flanging
- Good for complex shapes in automotive and appliance panels
5.3 Weldability
- Processes: MIG, TIG, laser, friction stir welding (FSW), resistance spot
- Filler wires: 5356, 5183, 5556 (depending on strength and corrosion requirements)
- Welds maintain good corrosion resistance and adequate mechanical strength, making the alloy ideal for welded structures (tanks, ship components, platforms).
5.4 Surface & Coating Behavior
Mill finish 5754 offers:
- Clean, uniform as-rolled surface
- Good adhesion for paint and powder coatings
- Suitable for anodizing (color and protective). Final appearance depends on surface preparation, so for high aesthetic demand, additional finishing (brushing, grinding) is recommended.
6. Benefits
The combination of mechanical and chemical properties gives 5754 clear advantages:
| Benefit | Description / Impact |
|---|---|
| Weight reduction | ~1/3 of steel density; allows lighter structures, lower fuel use |
| Corrosion resistance | Long service life in marine and aggressive atmospheres |
| Strength vs. formability | Balanced strength with capability to form complex shapes |
| Welding performance | Strong, corrosion-resistant weld zones, minimal post-weld treatment |
| Cost efficiency | Non-heat-treatable; no expensive final heat treatments |
| Surface versatility | Compatible with paint, powder coating, anodizing |
| Sustainability | 100% recyclable, with minimal property loss after recycling |
These benefits make 5754 a “workhorse” alloy where structural performance, durability, and fabrication flexibility must align.
7. Typical Applications
5754 mill finish sheet and plate are widely used in the following sectors:
7.1 Marine & Offshore
| Component | Reason for Use |
|---|---|
| Ship decks & flooring | Slip-resistant tread plates, corrosion resistance |
| Superstructures, bulkheads | Weight saving vs. steel, long life |
| Ramps, gangways, walkways | Light, strong, easy to fabricate |
| Boat hull stiffeners & panels | Good weldability and seawater resistance |
7.2 Transportation (Land & Rail)
| Application | Benefit |
|---|---|
| Truck and trailer side walls | Weight reduction, corrosion resistance |
| Tipper and tanker bodies | Good weldability and dent resistance |
| Bus and coach body panels | High formability for curved panels |
| Railway carriage interiors/floors | Fire-safe metal, durable, low maintenance |
7.3 Storage Tanks & Pressure Vessels (Low Pressure)
- Fuel, water, and chemical storage tanks
- Silos, hoppers, and bins
- Non-pressurized or low-pressure containers where corrosion resistance is critical
5754’s weldability and resistance to many industrial and food-related media make it common in these uses.
7.4 Architectural & Industrial
| Use Case | Advantage |
|---|---|
| Facades, cladding, roofing | Corrosion resistance, light dead load |
| Stair treads & platforms | Available as tread plate with patterns |
| Machine frames & covers | Easy to machine, cut, and assemble |
| HVAC housings and ducting | Light, corrosion resistant, easy to install |
8. Selection Guidelines & Comparison
When considering 5754, engineers often compare it with other 5xxx and 6xxx alloys:
| Alloy | Strength (typical) | Corrosion Resistance | Formability | Weldability | Common Alternative Use |
|---|---|---|---|---|---|
| 5052 | Medium | Excellent | Very good | Very good | Slightly softer; high formability |
| 5754 | Medium–high | Excellent | Very good | Very good | Stronger than 5052; marine, transport |
| 5083 | High | Excellent | Good | Very good | Heavy-duty marine, cryogenic |
| 6061 | High (heat-treat.) | Good | Moderate | Good | Structural where machined parts needed |
Use 5754 when you need:
- Better strength than 5052, but still good forming
- Superior corrosion resistance compared to many 6xxx alloys
- Reliable weldability and structural performance in marine/transportation environments
5754 mill finish aluminum sheet plate is a robust, versatile Al-Mg alloy tailored for environments where corrosion resistance, moderate-to-high strength, and formability must coexist. Its non-heat-treatable nature simplifies processing, while excellent weldability and good surface quality make it a preferred choice in:
- Marine and offshore structures
- Trucks, trailers, rail vehicles, and tankers
- Storage tanks, silos, and industrial enclosures
- Architectural facades, floors, and platforms
By combining lightweight design with long service life and easy fabrication, 5754 mill finish sheet and plate deliver strong technical and economic value across a wide range of engineering applications.
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