For building facades, roofing, and equipment cladding, 3105 painted stucco embossed aluminum coil represents a premium choice that balances structural strength, aesthetic texture, and weather-resistant durability. Compared to smooth painted aluminum sheets, the embossed texture—without compromising coating performance—adds practical benefits such as dent resistance, glare reduction, and the ability to mask minor scratches. The 3105 Al-Mn-Mg alloy substrate offers approximately 10% higher strength than standard 3003 alloy, making it better suited for outdoor applications involving moderate to high loads. As a specialist stucco aluminum coil manufacturer, BCM Aluminum supplies finished-grade 3105 painted embossed aluminum coils to global architectural and industrial clients, utilizing a three-stage process: alloy rolling, coil coating and curing and embossing.
3105 is an Al-Mn-Mg series corrosion-resistant alloy (with Mn content of approx. 0.30%–0.80% and Mg content of approx. 0.20%–0.80%), combining the natural passivation-based corrosion resistance of Al-Mn alloys with the solid-solution strengthening effect of magnesium. BCM Aluminum manufactures 3105 aluminum stucco embossed aluminum coil in compliance with ASTM B209 standards; standard supply is in the H14 (half-hard) temper, featuring a tensile strength of 150–190 MPa, yield strength ≥125 MPa, and elongation ≥7%. For applications requiring high forming precision, the H24 (low-stress) temper is available, offering increased elongation (≥10%) and approximately 20% less springback. It withstands neutral salt spray testing for ≥800 hours, demonstrating stable resistance to atmospheric corrosion and rainwater erosion, ensuring reliable service life for the substrate in exposed outdoor environments.
BCM Aluminum employs a continuous "two-coat, two-bake" roller coating process, with the primary topcoat formulated according to specific weather-resistance grades. Polyester (PE) coating: dry film thickness (DFT) ≥16μm, adhesion grade 0, T-bend ≤2T, indoor color retention of 5–8 years. High-durability polyester (HDP): DFT 20–25μm, enhanced anti-aging properties via UV-absorbing groups, outdoor color retention of 10–15 years. Fluorocarbon (PVDF) coating: contains >70% fluorocarbon resin, DFT ≥25μm, pencil hardness ≥2H, neutral salt spray resistance >2000 hours, outdoor weather and color retention of 25–30 years, compliant with AAMA 2605 standards.
The reverse side of painted stucco aluminum coil features an epoxy resin backing coat—a detail often overlooked in engineering yet critical to service life. With a DFT ≥8μm, the epoxy backing forms a chemical bond with the aluminum substrate through high-temperature curing; this isolates the back surface from humid air and moisture in the insulation layer (inhibiting oxidation and corrosion) while enhancing adhesion to insulation materials and adhesives. In applications involving composite air ducts and insulated sandwich panels, the epoxy backing significantly reduces the risk of interlaminar delamination. The overall coating system incorporates a chromate pretreatment, ensuring bending and impact resistance that meet downstream processing requirements.
BCM Aluminum offers three common architectural patterns—stucco, orange peel, diamond, and lentil (stucco-embossed)—with an embossing depth of 0.18–0.25mm. Formed in a single pass using precision-engraved rollers, the textures are uniform and distinct. Post-embossing, the material undergoes continuous roller leveling and low-temperature stress relief; panel flatness is ≤2mm/m, ensuring no warping upon uncoiling and laying flat. Standard thicknesses range from 0.4mm to 1.2mm, with customizable widths between 50mm and 1500mm; thickness tolerance is ±0.02mm, and slitting precision is ±0.5mm. Color difference (ΔE) on the front surface within the same batch is ≤1.0, with support for custom RAL and NCS color standards, ensuring visual uniformity across large-area installations.
3105 painted stucco embossed aluminum coils are widely used for industrial roofing and wall panels, exterior cladding for public buildings, sun louvers, garage door panels, equipment housings, and refrigerated truck linings. The stucco-embossed pattern offers soft, diffuse reflection, making it ideal for facades in urban centers, while the diamond-embossed pattern provides superior rigidity, suiting long-span roofing and pedestrian areas. Based on extensive experience, inland industrial projects can balance performance and cost by selecting 0.5–0.8mm stucco-embossed aluminum coils with HDP coating; for coastal areas with high salt-spray exposure, upgrading to PVDF coating and a 5052 alloy substrate is recommended. For sandwich panels and composite air ducts, with epoxy back-coating must be verified.
Each batch product from BCM Aluminum is accompanied by test reports covering mechanical properties, coating thickness, color consistency, and salt spray resistance, with full traceability of heat numbers. As an embossed aluminum coil manufacturer, BCM offers comprehensive customization options—including patterns, coatings, alloys, and widths—alongside value-added services such as precision slitting, cut-to-length processing, and protective film application, enabling customers to proceed directly to roll forming upon delivery. For samples or project quotations, simply provide details regarding operating conditions and processing parameters, and our technical team will recommend the optimal alloy and coating solution.
