5052 5005 5754 5083 color coated aluminum coils
Color coated aluminum coils consist of base aluminum alloy sheet or coil that has been pre-treated and coated with organic paint systems (single-coat or multi-coat PVDF, FEVE, polyester, SMP, etc.) to achieve decorative appearance, enhanced corrosion resistance, and improved weathering performance. The base alloys 5052, 5005, 5754, and 5083 are non-heat-treatable, magnesium-containing alloys widely used where good formability, moderate strength, and corrosion resistance are required.
advantages:
- Lightweight with high strength-to-weight ratio
- Excellent corrosion resistance (including marine resistance for 5083, 5754)
- Good formability and bendability for profile forming
- Durable and UV-stable coatings for exterior use
- Easy fabrication (cutting, punching, folding, roll-forming)
- Long service life with low maintenance
Typical Chemical Composition (wt %)
Note: Compositions are presented as typical ranges for supplied alloys in common temper conditions (O, H11, H22, etc.). Refer to specific mill certification for exact values.
| Alloy | Si (max) | Fe (max) | Cu (max) | Mn (max) | Mg (min-max) | Cr (max) | Zn (max) | Ti (max) | Al (balance) |
|---|---|---|---|---|---|---|---|---|---|
| 5052 | 0.25 | 0.40 | 0.10 | 0.10 | 2.2 – 2.8 | 0.15 | 0.10 | 0.03 | remainder |
| 5005 | 0.20 | 0.70 | 0.10 | 0.10 | 0.5 – 1.1 | 0.10 | 0.10 | 0.05 | remainder |
| 5754 | 0.40 | 0.40 | 0.20 | 0.50 | 2.6 – 3.6 | 0.30 | 0.20 | 0.10 | remainder |
| 5083 | 0.40 | 0.40 | 0.10 | 0.40 | 4.0 – 4.9 | 0.05 | 0.25 | 0.25 | remainder |
Mechanical Properties (typical, annealed or common tempers)
| Alloy | Temper | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Hardness (HB/approx) |
|---|---|---|---|---|---|
| 5052 | H32/H34 | 130 – 200 | 195 – 275 | 5 – 15 | 40 – 75 |
| 5005 | O/H14 | 60 – 120 | 110 – 170 | 10 – 30 | 20 – 60 |
| 5754 | O/H22 | 140 – 240 | 220 – 310 | 6 – 16 | 45 – 85 |
| 5083 | O/H116 | 200 – 350 | 275 – 380 | 6 – 18 | 60 – 100 |
Notes:
- Strength varies with temper and thickness.
- 5083 has the highest strength and excellent performance in cryogenic and marine environments.
- 5005 is largely used for decorative base metal due to good surface finish and formability.
Coating Systems and Surface Treatments
Color coated aluminum coils are offered with several coating types, each suited to different performance requirements:
| Coating Type | Typical System | Film Thickness (dry, µm) | Characteristics |
|---|---|---|---|
| PVDF (KYNAR/Hylar/FEVE-modified PVDF) | Primer + PVDF topcoat | 25 – 35 (topcoat) / total 18 – 35 depending on system | Superior UV resistance, color retention, chalk resistance, 20+ year life in architectural use |
| FEVE-based | Primer + FEVE topcoat | 20 – 30 | Excellent long-term color fade resistance, low dirt pickup |
| SMP (Silicone Modified Polyester) | Primer + SMP topcoat | 15 – 25 | Good weatherability, cost-effective, good formability |
| Polyester (PE) | Primer + PE topcoat | 12 – 25 | Economical, moderate weathering life (5–10 years) |
| High-Performance PVDF (3-coat) | Pretreatment + primer + base coat + PVDF top | 30 – 40 (total) | Outstanding durability for harsh environments |
Surface pretreatments:
- Chemical conversion (chromate-free or chromate-based for older specs)
- Anodized finish available for specific applications
- Back-coating available for stress-relief and corrosion protection on the reverse side
Typical coil finishing parameters:| Parameter | Typical Range / Value ||----------:|-----------------------:|| Base metal thickness | 0.15 mm – 3.0 mm (most common 0.2–1.5 mm) || Coil width | 500 mm – 1600 mm (standard 1000/1250/1500 mm) || Coil ID | 508 mm (standard) || Coil weight | 3 – 10 metric tons (customizable) || Surface finish | PVDF/smooth, stucco, embossed, matt, glossy |
Corrosion Resistance and Durability
- 5052: Excellent corrosion resistance in marine and industrial atmospheres; widely used for fuel tanks, marine hulls, and roofing.
- 5005: Good atmospheric corrosion resistance, commonly used as decorative coil for interior and exterior building panels.
- 5754: High corrosion resistance with better strength than 5052; used for automotive panels, architectural cladding.
- 5083: Superior corrosion resistance in seawater and industrial environments; commonly used for shipbuilding, pressure vessels, and cryogenic tanks.
Coating extends service life by:
- Blocking ingress of moisture and salt
- UV protection that minimizes chalking and color fade
- Providing an easily cleanable decorative surface
Accelerated weathering data (typical expectations for PVDF):| Test / Condition | Typical Result ||------------------|----------------|| QUV, 2000 hours | Minimal chalking, ΔE < 3 for high-quality PVDF || Salt spray (ASTM B117) | No blistering or significant corrosion at scribe for 1000+ hours with proper pretreatment || Natural field exposure | 15–25 years color performance depending on environment and coating |
Fabrication & Formability
Forming operations available with these alloys/coils:
- Roll-forming and profile forming
- Bending and folding (consider springback based on temper)
- Deep drawing (5005 and 5052 better suited for deep draw than 5083)
- Punching, shearing, and laser cutting
- Welding: TIG/MIG, resistance spot welding (parameters depend on alloy and thickness)
Guidelines:
- Pre-coated coil requires careful control of bending radius and tooling to avoid cracking of paint (use minimum bend radius ≥ 1.0*t for many coatings; PVDF often requires larger radius).
- Use proper back-up/brace to avoid wrinkling in deep drawing.
- Edge trimming and perforation should respect coating thickness — post-paint touch-up or protective edge seal recommended.
Thermal & Physical Properties
| Property | Typical Value |
|---|---|
| Density | 2.68 g/cm³ |
| Thermal conductivity | 130 – 150 W/(m·K) (varies slightly by alloy) |
| Coefficient of thermal expansion | 23 – 25 µm/(m·K) |
| Melting range | ~ 600 – 660 °C (alloy dependent) |
| Electrical conductivity | 25 – 35 % IACS (depending on alloy and temper) |
Quality Standards & Testing
Common standards and tests for color coated aluminum coils:
- ASTM B209 / EN 485 (flat rolled products)
- EN 1396 (aluminium and aluminium alloys — coated)
- AAMA 2605 / AAMA 2604 (architectural coating performance for PVDF and SMP)
- ISO 9001: quality management certification for manufacturer
- Coil coating process controls: film thickness, adhesion (cross-cut, pull-off), impact resistance, humidity resistance, salt spray, and weathering tests
test parameters:| Test | Requirement / Typical Acceptance ||------|---------------------------------:|| Cross hatch adhesion (ASTM D3359) | 4B – 5B || Pull-off adhesion (ISO 4624) | > 5 MPa for high-performance systems || Humidity resistance (ASTM D2247) | 1000+ hours with no scribe creeping for PVDF with proper pretreatment || Impact (ASTM D2794) | No cracking at specified impact energy for coil coatings |
Applications
Color coated coils from 5052, 5005, 5754, and 5083 alloys are used across many industries:
- Architectural cladding and curtain walls
- Exterior facades, soffits, canopies, louvers
- Roofing and rain-screen systems
- Standing seam roofs, metal roof panels, gutters, flashings
- Building interior panels
- Decorative ceilings, partition panels
- Transportation
- RV panels, truck bodies, trailer walls, bus exteriors
- Marine and offshore
- Decking, superstructures, paneling for boats and ships (5083 preferred)
- HVAC equipment and ducts
- Lightweight, corrosion-resistant casing and panels
- Signage and advertising panels
- High-quality, color-stable outdoor signs
- Appliances and furniture
- Decorative finishes for panels and housings
- Industrial equipment enclosures
- Chemical plant cladding, corrosion-resistant housings
Alloy selection by application:
- Choose 5083 or 5754 when higher strength and seawater corrosion resistance are required (marine, offshore).
- Choose 5052 for general exterior use combining formability and corrosion resistance.
- Choose 5005 when superior surface finish and decorative requirements are primary.
Ordering Information & Typical Options
| Parameter | Options / Notes |
|---|---|
| Alloy | 5052, 5005, 5754, 5083 |
| Temper | O, H14, H22, H24, H32, H34, H116 (5083) |
| Base thickness | 0.15 mm – 3.0 mm (typical) |
| Coating system | PVDF, FEVE, SMP, Polyester, 2-coat, 3-coat |
| Topcoat color | RAL / custom color match (spectrophotometer-based) |
| Coating gloss | Glossy, semi-gloss, matt |
| Coil width | 500 – 1600 mm (custom available) |
| Coil weight | Up to customer handling capacity |
| Surface finish | Smooth, stucco-embossed, embossed, anodized |
| Packaging | Wooden crates, protective film, waterproof wrapping |
Lead times, minimum order quantities, and certification (Mill Test Report, EN/ASTM compliance) vary by supplier.
Design & Specification Tips
- Specify alloy and temper based on required forming and strength: e.g., 5052-H32 for general forming, 5083-H116 for welded structural marine panels.
- Specify coating system by durability requirement: AAMA 2605 for premium architectural performance.
- Define maximum acceptable color difference (ΔE) and gloss level in the specification.
- State minimum film thickness and pretreatment (chromate-free treatments available for LEED/NFPA compliance).
- Include edge treatment requirements if used in coastal environments (edge sealing recommended).
- Request test reports for adhesion, weathering, and salt spray for critical projects.
Color coated aluminum coils in 5052, 5005, 5754, and 5083 alloys combine the benefits of aluminum’s lightweight strength and corrosion resistance with high-performance organic coatings for long-lasting, attractive surfaces. Selecting the correct alloy, temper, coating system, and thickness enables application across architecture, transportation, marine, and industrial sectors. For demanding exterior architectural projects, PVDF-coated 5005/5052/5754 coils offer long-term color retention and weatherability; for marine and structural applications, 5083 and 5754 provide superior corrosion resistance and strength.
For quotation, sample swatches, technical data sheets, or custom specifications (coil width, thickness, temper, and coating), please contact our sales engineering team with required alloy, coating class (e.g., PVDF AAMA 2605), thickness, and coil dimensions.
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