Color Coated Aluminum Coil 5052 H32
12/18 2025
Color Coated Aluminum Coil 5052 H32 is a premium marine-grade, corrosion-resistant, mid-strength aluminum coil with durable polyester or PVDF paint coatings. It offers outstanding weather resistance, excellent formability, lightweight performance, and long service life, making it ideal for building façades, roofing, curtain walls, transportation bodies, marine parts, and decorative panels.
Color Coated Aluminum Coil 5052 H32 combines the inherent strength and corrosion resistance of the 5052 alloy with a high-performance organic paint layer. Temper H32 indicates that the alloy is strain-hardened and partially annealed, giving a balanced profile of strength, ductility, and formability.
This product is engineered for demanding outdoor and marine environments where color retention, gloss stability, and long-term durability are critical. It is commonly supplied with polyester (PE), high-durability polyester (HDPE), or PVDF (polyvinylidene fluoride) coatings, depending on the project’s performance requirements.
Features
- Medium strength with excellent fatigue resistance
- Excellent corrosion resistance, especially in marine and industrial atmospheres
- Smooth, uniform color coating with high adhesion
- Good formability for bending, roll forming, stamping, and profiling
- Lightweight with high stiffness-to-weight ratio
- Good weldability and workability
- Stable color, gloss, and coating integrity under UV and weathering
- Environmentally friendly, recyclable material
Typical Applications
Building & Construction
- Exterior wall cladding and curtain wall panels
- Roofing sheets and standing seam systems
- Rain gutters, downpipes, fascia, and soffit panels
- Ceiling systems, louvers, and sunshades
Transportation & Marine
- Bus, truck, and trailer body panels
- Caravan and refrigerated vehicle skins
- Ship cabin panels and superstructure components
- Marine decorative trims and interior partitions
Industrial & Decorative
- Equipment casings and shells
- Doors, roller shutters, and garage doors
- Interior decorative panels and signage
- Kitchen cabinets, furniture components, and appliances panels
Alloy & Temper Description
Aluminum Alloy 5052 is an Al–Mg alloy known for its excellent corrosion resistance and good weldability. The H32 temper refers to strain hardening followed by partial annealing, achieving a stable strength level suitable for forming.
| Item | Description |
|---|
| Alloy designation | 5052 |
| Temper | H32 (strain hardened, stabilized) |
| Aluminum series | 5xxx (Al–Mg series) |
| Main strengthening element | Magnesium (Mg) |
| Typical product form | Coil, strip, sheet |
| Standard references | ASTM B209, EN 485, GB/T 3880 or equivalent |
Chemical Composition (Typical Values)
| Element | Si | Fe | Cu | Mn | Mg | Cr | Zn | Others (each) | Al |
|---|
| % | ≤0.25 | ≤0.40 | ≤0.10 | ≤0.10 | 2.2–2.8 | 0.15–0.35 | ≤0.10 | ≤0.05 | Balance |
Values are typical ranges based on common standards; exact values can be customized within standard limits.
Mechanical Properties – 5052 H32 (Base Metal, Uncoated)
| Property | Typical Value | Test Standard / Notes |
|---|
| Tensile strength (Rm) | 215–265 MPa | ASTM B209 / EN 485 |
| Yield strength (Rp0.2) | ≥ 130 MPa | ASTM B209 / EN 485 |
| Elongation (A50) | ≥ 7–12 % (depending on thickness) | Longitudinal direction |
| Modulus of elasticity | ~70 GPa | At room temperature |
| Density | ~2.68 g/cm³ | Typical for Al–Mg alloys |
| Hardness (Brinell, HB) | ~60–70 HB | For reference only |
Coating Systems
Common Paint Types
| Coating Type | Typical Resin Content | Advantages | Typical Use Scenario |
|---|
| PE | ~25–30% | Cost-effective, good color range, easy forming | Interior, light exterior, short–mid term |
| HDPE | ~30–35% | Improved UV resistance, better chalking control | General exterior cladding, roofs |
| PVDF | ≥70% PVDF resin | Excellent UV, color & gloss retention, superior chalking & corrosion resistance | High-end façades, coastal & industrial zones |
Coating Structure
| Layer | Typical Thickness | Function |
|---|
| Topcoat (front side) | 15–25 μm (PE/HDPE) / 20–28 μm (PVDF) | Weather barrier, color, gloss, UV protection |
| Primer (front side) | 5–7 μm | Adhesion promoter, anti-corrosion |
| Back coat / service coat | 5–15 μm | Anti-corrosion, adhesion to adhesive or foam |
| Conversion layer | Nanoceramic or chromate-free | Enhances corrosion resistance & paint adhesion |
| Aluminum substrate | As ordered | Mechanical strength, formability |
Technical Specifications of Color Coated Aluminum Coil 5052 H32
Dimensional Range
| Parameter | Typical Range | Notes |
|---|
| Thickness | 0.20 – 3.00 mm | Other thicknesses on request |
| Width | 20 – 1600 mm | Slitting available for narrow strips |
| Coil inner diameter (ID) | 405 mm, 505 mm, 508 mm, 610 mm | Common mandrel sizes |
| Coil outer diameter (OD) | ≤ 1500 mm | Depends on thickness & coil weight |
| Coil weight | 1 – 8 MT (metric tons) | Customized packaging possible |
| Tolerance (thickness) | ±0.02 – ±0.05 mm (depending on gauge) | As per standard or customer requirement |
| Tolerance (width) | ±0.5 – ±1.0 mm | Slitting precision available |
Coating Performance
| Property | Typical Value / Requirement | Test Method / Notes |
|---|
| Pencil hardness | ≥ HB–2H (PE/PVDF) | ASTM D3363 |
| Adhesion (cross hatch) | Grade 0–1 | ASTM D3359 |
| T-bend flexibility | ≤ 2T, no cracking (PE) | ASTM D4145 |
| Impact resistance | ≥ 50 kg·cm, no peeling | ASTM D2794 |
| Gloss (60°) | 20–80 GU (customizable) | ASTM D523 |
| Color difference (ΔE) | ≤ 2.0 (batch control) | Spectrophotometer |
| Salt spray resistance | ≥ 1000 h (PVDF), ≥ 500 h (PE) | ASTM B117, no significant blistering |
| Humidity resistance | ≥ 1000 h | ASTM D2247 |
| UV weathering (PVDF) | Up to 20–25 years color warranty (project dependent) | Outdoor exposure / QUV tests |
Surface & Color Options
| Option Type | Description |
|---|
| Finish | High-gloss, semi-gloss, matte, ultra-matte |
| Surface texture | Smooth, embossed (stucco, orange peel, etc.) |
| Standard colors | RAL series, NCS, Pantone approximations |
| Custom colors | Tailor-made according to color samples or codes |
| Special effects | Metallic, pearlescent, wood grain, stone pattern |
| Protective film | PE or PET removable film for scratch protection |
Advantages vs. Uncoated Coil / Other Materials
- Directly usable in production without post-painting, reducing process steps, VOC emissions, and labor.
- More consistent color and appearance than post-coated panels.
- Lower density and better corrosion resistance than most steel alternatives, especially in coastal environments.
- Good balance between cost, performance, and aesthetics compared with solid aluminum sheets, anodized panels, or composite structures in many mid-to-high-end façade and transportation projects.
Processing & Fabrication
| Process | Suitability / Notes |
|---|
| Roll forming | Excellent; suitable for roofing and cladding profiles |
| Bending | Good; recommended radii depend on thickness & coating |
| Stamping | Possible; avoid excessive localized strain on coating |
| Cutting | Shearing or rotary slitting; protect coated surfaces |
| Welding | TIG, MIG, resistance welding on bare edges feasible |
| Adhesive bonding | Good adhesion with proper surface cleaning / priming |
To maintain coating integrity, tooling should be clean and free from burrs, and bending directions should respect grain orientation when possible.
Packaging & Storage
| Aspect | Details |
|---|
| Packaging | Eye to wall or eye to sky; steel or wooden pallets |
| Protection | Moisture-proof paper, plastic film, edge protectors |
| Handling | Use soft slings; avoid metal hooks on painted surface |
| Storage | Dry, clean, ventilated area; avoid standing water |
Typical Specification Sheet Example
| Item | Specification Example |
|---|
| Alloy / temper | 5052 H32 |
| Thickness | 0.8 mm |
| Width | 1250 mm |
| Coating system | 2/15 μm polyester (primer/top) |
| Back coat | 5–7 μm epoxy or polyester |
| Color | RAL 9006 (silver metallic) |
| Finish | Semi-gloss, 35–40 GU |
| Coil ID | 508 mm |
| Coil weight | 3–5 MT |
| Application | Building façade & roofing system |
5052
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