3105 color coated aluminum coil is a prepainted Al-Mn-Mg alloy designed for roofing, wall cladding, rainwater systems, shutters and continuous roll-forming applications. Compared with general-purpose aluminum sheet, 3105 offers a practical balance of formability, corrosion resistance and coating performance for architectural and building products.
Available with PE, HDP or PVDF finishes, our prepainted aluminum 3105 coils can be supplied in mill width, slit coil or roof roll forming widths to match your production line and finished profile requirements.
- Al-Mn-Mg Alloy
- PE / HDP / PVDF Coating
- Slit Coil Available
- Suitable for Roll Forming
- Roofing & Gutter Applications
Continuous coil coating production of 3105 aluminum, with controlled coating application for consistent color, surface appearance and performance in architectural and roll-formed products.
Why Choose 3105 Prepainted Aluminum Coil?
Good Roll-Forming Performance
3105 aluminum coil can be processed into roofing profiles, corrugated panels, standing seam panels, gutters and trim components with stable forming behavior.
Durable Coil Coating Options
Choose PE for standard projects, HDP for improved weathering, or PVDF for demanding exterior environments and long-term color retention requirements.
Suitable for Rainwater Systems
The combination of aluminum corrosion resistance and a protective paint system makes 3105 a practical material for gutters, downpipes, fascia and drainage accessories.
Flexible Supply Formats
Coils can be supplied in master coil, slit coil, narrow strip or roof roll widths according to your profiling machine, fabrication process and packaging requirements.
What Is 3105 Aluminum Alloy?
3105 aluminum is part of the Al-Mn-Mg alloy family. Manganese contributes to strength and corrosion resistance, while magnesium supports workability and mechanical performance. This makes 3105 a commonly used alloy for painted building products that require bending, profiling or continuous roll forming.
The alloy is not intended for high-strength structural applications. Its value lies in reliable forming performance, good atmospheric corrosion resistance and compatibility with durable coil coating systems.
For customers who need an uncoated substrate, see our 3105 Aluminum Coil page. For painted sheet formats used in fabrication and panel production, visit 3105 painted aluminum sheet.
3105 Color Coated Aluminum Coil Specifications
| Item | Available Options |
| Alloy | AA 3105 / EN AW-3105 |
| Material Type | Color coated aluminum coil / prepainted aluminum coil |
| Temper | H14, H16, H18, H24 or as required |
| Coating System | PE, HDP, PVDF |
| Top Coat Color | RAL, Pantone, custom color sample or project color |
| Surface Finish | Glossy, matte, textured, embossed or customized |
| Coil Form | Master coil, slit coil, narrow strip, roof roll |
| Application | Roofing, wall panels, gutters, shutters, louvers, trims |
| Protective Film | Available upon request |
PE, HDP and PVDF Coatings for 3105 Aluminum Coil
The suitable coating system depends on project location, UV exposure, expected service life, color requirements and budget.
| Coating Type | Recommended Use | Main Advantage |
| PE Coating | Interior panels, standard roofing, general fabrication | Economical and widely used |
| HDP Coating | Exterior panels, gutters, roofing in moderate climates | Better weather resistance and color retention |
| PVDF Coating | Coastal projects, high-UV areas, premium facades and roofing | Excellent durability, UV resistance and long-term appearance |
For a detailed comparison of coating performance, weather resistance and typical applications, read our guide: PE vs PVDF coated aluminum.
Chemical Composition of Alloy 3105 Color Coated Aluminum Coil
| Element of alloy 3015 | Content (%) |
| Aluminum (Al) | 97.5 |
| Manganese(Mn) | 0.6-1.0 |
| Silicon(Si) | ≤0.6 |
| Iron(Fe) | ≤0.7 |
| Cooper(Cu) | 0.1-0.4 |
| Zinc(Zn) | ≤0.25 |
| Other Elements | ≤0.05 |
| Total Impurities | ≤0.15 |
Key Properties of Alloy 3105 Color Coated Aluminum Coil
Mechanical Properties of Alloy 3105 Color Coated Aluminum Coil
| Property of alloy 3015 | (Temper: O) | (H12) | (H14) | (H16) | (H18) | (H22) | (H24) | (H26) | (H28) | |
| Tensile Strength | 95-130 MPa | 130-165 Mpa | 145-185Mpa | 170-210Mpa | 195-230Mpa | 130-165 Mpa | 145-185Mpa | 170-210Mpa | 195-230Mpa | |
| Yield Strength (0.2% offset) | 35-60 MPa | 110-145 MPa | 125-165 MPa | 150-190 MPa | 175-210 MPa | 100-135 MPa | 115-155 MPa | 140-180 MPa | 165-205 MPa | |
| Elongation at Break | 18-22% | 8-12% | 6-10% | 4-8% | 3-6% | 8-12% | 6-10% | 4-8% | 3-6% | |
| Hardness (Rockwell B) | 30-40HB | 40-50HB | 45-55HB | 55-75HB | 60-70HB | 40-50HB | 45-55HB | 55-75HB | 60-70HB |
Physical Properties of Alloy 3105 Color Coated Aluminum Coil
| Property of alloy 3015 | Value |
| Density | 2.7 g/cm³ |
| Melting Point | 643–657°C |
| Thermal Conductivity | 209 W/m·K |
| Electrical Conductivity | 61% IACS |
| Thermal Expansion Coefficient | 23.1×10⁻⁶/°C (20–100°C) |
Applications of 3105 Color Coated Aluminum Coil
3105 color coated aluminum coil is commonly processed into roofing, wall cladding, rainwater components, shutters and building trim. Its combination of formability, corrosion resistance and coating compatibility makes it a practical choice for continuous roll-forming and color-matched architectural products.
Roofing Panels and Roll-Formed Roof Systems
3105 prepainted aluminum coil can be roll formed into corrugated sheets, standing seam panels, tile-profile roofing and other lightweight roof products. Coil width, thickness, temper and coating system can be selected according to the forming equipment, panel profile and installation requirements.
For projects focused on roofing products, see color coated aluminum coil for roofing.
Gutters, Downspouts and Rainwater Components
Color coated aluminum is also used for gutters, downspouts, fascia channels and related rainwater accessories. The coil can be slit to the required width and formed into long, continuous sections, while the painted surface provides a consistent appearance across roof drainage components and exterior trim.
Wall Cladding, Soffits and Architectural Panels
3105 coated aluminum coil can be fabricated into wall panels, soffits, façade components, decorative trims and other formed architectural products. For exterior applications, the coating should be selected according to the expected UV exposure, climate and service environment, with PE, HDP or PVDF systems available for different performance requirements.
Shutters, Louvers and Roller Shutter Slats
Its balance of formability and strength makes 3105 suitable for profiled products such as shutters, louvers and roller shutter slats. Before production, the required temper and coil dimensions should be matched with the bending radius, roll-forming method and finished profile to help maintain dimensional consistency during continuous processing.
Embossed Roofing and Decorative Metal Products
When a textured surface is required, color coated 3105 aluminum can be supplied for selected embossed roofing and decorative sheet products. Embossing can change the surface appearance and profile, so the alloy, coating condition and forming process should be considered together when specifying the material.
Fascia, Flashing and Exterior Building Trim
Prepainted 3105 aluminum is used for flashing, fascia, window trim, edge profiles and other formed building accessories. These products can be produced from slit coil or cut-to-length material, with the painted finish allowing exterior components to be coordinated with roofing, siding and wall cladding.
Slit 3105 Aluminum Coil for Roofing and Roll Forming
Roofing and roll forming equipment does not always use the same coil width or winding specification. Our 3105 color coated aluminum coil can be supplied as master coils or slit to narrower widths for products such as roofing panels, gutters, shutters, flashing and other formed profiles.
- Master coils for roofing and wide-strip processing
- Slit 3105 aluminum coils for gutters, shutters and narrow profiles
- Custom widths for continuous roofing roll forming
- Coil dimensions and weight selected for handling and production equipment
- Protective film options for painted or coated surfaces
- Packaging suitable for long-distance and sea freight transportation
- Project-specific coating colors and gloss levels available
Slitting is based on the requirements of the forming line and the finished profile. When requesting a quotation, it is useful to provide the required thickness, slit width, coil inner diameter, maximum coil weight, temper, coating system and application. These details help avoid unnecessary adjustments during roll forming and make the material easier to integrate into an existing production line.
3105 vs. 3003 vs. 3005 Color Coated Aluminum Coil
Alloy selection should be based on forming requirements, finished profile design, required strength and the service environment.
| Alloy | Typical Positioning | Common Applications |
| 3003 | General-purpose Al-Mn alloy | Basic sheet metal, panels, general fabrication |
| 3105 | Al-Mn-Mg alloy for painted and roll-formed products | Roofing, gutters, wall panels, shutters |
| 3005 | Higher-strength option for selected building profiles | Roofing, cladding and more demanding formed products |
If your application requires a widely used general-purpose alloy, review our 3003 color coated aluminum coil. For projects requiring a different balance of strength and formability, you may also compare 3005 prepainted aluminum coil.
Custom 3105 Color Coated Aluminum Coil Specifications
Color is only one part of a coated aluminum coil specification. For roofing, wall panels, gutters and other formed products, the coil also needs to suit the customer's forming equipment, panel dimensions and installation environment. We can configure the 3105 color coated aluminum coil by thickness, width, slit width, temper, coil weight, inner diameter, coating system and surface finish.
The coating should be selected according to how the finished product will be used. PE is commonly specified for general decorative and building applications, while HDP or PVDF may be considered where greater weathering performance is required. Outdoor exposure, sunlight, humidity, coastal conditions and the expected service period should all be considered before choosing the coating system.
For an accurate quotation, please provide: application, alloy and temper, thickness, coil width, slit width if required, coil weight, coil ID, coating system, color reference, quantity and destination port.
What to Include in Your Coil Inquiry
- Application
- Roofing panel, gutter, wall cladding, shutter, flashing or other formed product
- Alloy and Temper
- 3105 aluminum alloy in the required temper
- Coil Dimensions
- Required thickness, master coil width or slit width
- Winding Requirements
- Coil weight, inner diameter and maximum outer diameter
- Coating System
- PE, HDP or PVDF coating, depending on the application and required weathering performance
- Color
- RAL code, Pantone reference or physical color sample
- Surface Requirements
- Required gloss level, protective film or other agreed surface finish
- Order Details
- Required quantity, delivery schedule and destination port or country
FAQ – 3105 Prepainted Aluminum Coil
Is 3105 aluminum suitable for roofing?
Yes. 3105 color coated aluminum coil is commonly used for roll-formed roofing panels, roofing trims, gutters and rainwater systems. The appropriate coating type should be selected according to the climate, forming requirements and project durability requirements.
What is the difference between 3105 and 3003 color coated aluminum coil?
Both 3105 and 3003 aluminum alloys are used for painted and formed aluminum products. 3105 contains manganese with magnesium and is widely selected for roofing, gutters and roll-forming applications. The better alloy depends on the required formability, strength, coil processing conditions and finished product design.
Which coating is better for 3105 aluminum coil: PE, HDP or PVDF?
PE coating is generally suitable for standard applications and budget-sensitive projects. HDP provides improved weather resistance for more demanding conditions, while PVDF is commonly selected for exterior applications with strong UV exposure and higher requirements for long-term color and coating stability.
Can 3105 prepainted aluminum coil be supplied as slit coil?
Yes. 3105 prepainted aluminum coil can be slit to widths suitable for gutter machines, shutter lines, roofing profiles, trim production and other continuous roll-forming processes. Slit width, coil weight and winding requirements can be specified when placing an order.
Can you match a custom color for 3105 color coated aluminum coil?
Yes. Custom colors can be produced based on a RAL code, Pantone reference, physical color sample or approved project sample, subject to minimum order quantity, coating system and color availability.