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Aluminum Alloy
Dingang
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Commercial architectural envelopes—including high-rise curtain walls, exterior rainscreen cassettes, airport terminal cladding, and transit hub facades—face severe, continuous outdoor weathering. Under prolonged ultraviolet (UV) exposure, intense thermal cycling, acidic urban smog, and airborne coastal chlorides, lower-grade exterior finishes (such as standard polyester or commercial powder coatings) degrade prematurely within 5 to 7 years. Common field failures include severe color fading, gloss collapse, micro-crack flaking along brake-formed cassette corners, and surface chalking that leaves unsightly runoff streaks across architectural glass assemblies.
Our 3003 PVDF Coated Aluminum Coil provides a certified 20-year exterior weathering barrier engineered specifically to eliminate building facade repainting and maintenance cycles. Built on manganese-alloyed AA3003 structural aluminum (in H14, H24, or H16 tempers), the strip undergoes multi-stage chemical passivation and continuous cleanroom roller coating with a 70% Kynar 500® / Hylar 5000® fluoropolymer resin system compliant with AAMA 2605 and Qualicoat Class 2 standards. Combining high flexural strength to withstand hurricane wind loads, dead-flat tension-leveled tolerance to eliminate panel oil-canning, and crack-free 1.0T to 1.5T bend formability for deep-return cassette corners, this coil allows facade fabricators to route, bend, and install finished rainscreen panels directly from factory-coated stock.
Exterior facade engineering requires materials that combine long-term aesthetic fidelity, high strength-to-weight efficiency, and crack-free fabrication performance. Our 3003 PVDF Coated Aluminum Coil links the structural reliability of manganese-alloyed aluminum with the molecular durability of continuous-cured fluoropolymer coatings. The carbon-fluorine (C-F) chemical bonds in 70% Kynar 500® resin resist ultraviolet bond scission, preserving architectural color and gloss under desert UV irradiation and industrial acid rain. At the core, our inline tension-leveling technology neutralizes strip internal stresses, guaranteeing dead-flat sheet geometry that eliminates visual oil-canning across large un-braced cassette spans. Because the specialized primer and PVDF topcoat bend down to 1.0T without micro-cracking, panel fabricators can press-brake deep perimeter returns and route-and-return corners without paint flaking or corrosion creep along fold lines. Transitioning from post-painted sheets to factory pre-coated coil reduces production lead times, ensures absolute batch-to-batch color consistency (ΔE ≤ 0.5), and lowers building lifecycle maintenance costs across a 20-year design horizon.
Certified 20-Year Color & Gloss Integrity: Formulated with 70% PVDF fluoropolymer resins to prevent chalking, fading, and chemical staining in accordance with AAMA 2605.
Dead-Flat Lay for Oil-Canning Prevention: Precision multi-roll tension leveling removes camber and edge wave, ensuring flat panel spans across wide architectural bays.
Crack-Free 1.0T to 1.5T Bend Flexibility: Elastic resin formulation permits sharp 90° press braking and route-and-return folding without micro-fissuring along perimeter returns.
Over 3,000 Hours Salt-Spray Endurance: Complete barrier protection isolates the non-ferrous aluminum substrate, eliminating edge creep and rust-bleeding in coastal zones.
Strict Batch-to-Batch Color Consistency: Closed-loop automated cleanroom roller coating holds color variance within ΔE ≤ 0.5, ensuring visual uniformity across large facade elevations.
Parameter | Detailed Information |
|---|---|
Main Product | Brushed Surface Color Coated Aluminum Coil |
Optional Alloys | 1050, 1060, 1100, 3003, 3004, 3105, 5052, 5005, 5754, 5083, 6061, 8011 |
Available Tempers | O, H12, H14, H16, H18, H24, H26, H32, H34 |
Thickness Range | 0.009 mm – 1.6 mm |
Width Range | 30 mm – 1600 mm |
Inner Core Diameter | 76mm,150 mm, 405 mm, 505 mm |
Color Customization | RAL color system, Pantone color system, custom colors per samples |
Coating Thickness | PVDF coating ≥25 μm; PE coating ≥18 μm |
Standard Packaging | Export-grade wooden pallets (Eye to Wall / Eye to Sky loading modes) |
Minimum Order Quantity | 3 metric tons per specification |
Delivery Cycle | 30 – 45 working days |
Loading Ports | Shanghai, Ningbo, Qingdao, Tianjin and other major ports |
Payment Terms | 30% T/T deposit in advance, 70% balance against B/L copy; L/C at sight |
Every architectural master coil is produced under ISO 9001 quality frameworks, utilizing automated chemical pre-treatment and cleanroom roller coating to maintain strict optical, mechanical, and environmental standards.
To support architectural facade contractors, sheet metal press shops, and panel roll-forming operations, we offer turnkey processing and protective supply chain services:
Equipped with high-precision rotary slitters and cut-to-length shearing lines, we supply custom-slit coil widths down to 80mm and pre-cut rectangular blanks up to 4000mm in length with low edge burrs held under 0.015mm, allowing direct feeding into automated panel-bending lines.
Coils can be laminated with specialized high-grade co-extruded PE protective films (60 to 90 microns) engineered with UV resistance for up to 6 months of outdoor jobsite exposure, peeling off cleanly without leaving adhesive residues after building installation.
Beyond standard architectural palettes (RAL, NCS, and Pantone), we formulate custom solid shades, metallic micas, and pearlescent fluorocarbon finishes within 48 hours, using certified inorganic ceramic pigments to ensure uniform metallic flake orientation.
Coil reels and flat sheet packs are protected with vapor corrosion inhibitor (VCI) anti-rust paper, encapsulated in heavy waterproof plastic wrapping, fitted with rigid steel radial edge guards, and secured onto reinforced, fumigated wooden skids for international sea shipping.
Spandrel panels situated between glazed vision bands endure intense solar heat buildup and wind pressure. Fabricated from 1.5mm to 2.0mm AA3003-H14 PVDF coated coil, these panels provide high flexural rigidity that resists negative wind suction pressures without fluttering. The high-bake fluoropolymer finish withstands continuous solar baking without color shifting, providing an exact color match with neighboring mullion extrusions.
Modern open-joint ventilated rainscreen systems rely on folded metal cassettes anchored to sub-framing. Panel shops route and fold 1.2mm to 1.5mm pre-coated 3003 coil into crisp 4-sided cassettes with hanging hook slots. The flexible coating wraps smoothly around perimeter folds and CNC-notched corner tabs without edge flaking, preserving corrosion protection inside concealed moisture drainage cavities.
Airport departures and rail interchange structures feature wide expanses of overhanging exterior soffits and large-diameter structural column wraps. Brake-formed from 1.0mm to 1.2mm 3003 coil, these large-radius curved cladding elements resist wind buffet vibration. The anti-static, low-dirt-pickup PVDF surface sheds atmospheric soot and aviation jet exhaust residue, washing clean under natural rainfall.
Motorized and fixed architectural sunshades mounted to building perimeters endure high-cycle wind buffeting and direct solar exposure. Roll-formed or stamped from 1.0mm to 1.5mm 3003-H16 coated strip, these aerodynamic louver blades retain structural straightness across multi-meter spans while the 20-year finish prevents chalking along leading wind-shear edges.
Roof parapet caps, building gravel stops, and entrance canopy fascias represent the primary defense line against driving rain and wind uplift along roof boundaries. Folded from 0.8mm to 1.2mm 3003 pre-painted coil, continuous coping lengths interlock cleanly over cleat systems. The marine-grade PVDF coating isolates the aluminum substrate from standing puddle water and rooftop acid deposits, preventing rust staining down the facade.
Q1:Why is AA3003 preferred over AA1100 for architectural facade cladding?
While AA1100 is an unalloyed commercial aluminum with low yield strength, AA3003 contains 1.0% to 1.5% manganese. This alloying element increases mechanical yield strength by roughly 20%, providing the flexural rigidity required to resist wind suction on tall buildings and prevent panel oil-canning across wide spans while maintaining excellent bend formability.
Our coating uses genuine 70% Kynar 500® / Hylar 5000® PVDF fluorocarbon resins blended with Complex Inorganic Color Pigments (CICP). The carbon-fluorine molecular bond resists ultraviolet radiation breakdown. Tested in accordance with AAMA 2605, the cured finish maintains color variance within ΔE ≤ 5.0 and chalk ratings ≥ 8 over two decades of outdoor exposure.
No. The fluoropolymer topcoat incorporates elastomeric resin flexibilizers that deliver a T-bend rating of ≤ 1.0T – 1.5T and Class 5B cross-hatch adhesion. It deforms cleanly with the metal substrate during sharp 90° brake bending and route-and-return folding without micro-fissuring or loss of edge adhesion.
We use closed-loop automated roller coaters and formulate single-batch master paint lots for large projects. Every production coil is scanned with multi-angle digital spectrophotometers to guarantee that color variance remains strictly within ΔE ≤ 0.5 compared to the approved master standard, preventing visible panel shade differences on the facade.
For architectural installations within 1,000 meters of the ocean, we recommend our 3-coat/2-bake PVDF system with a total dry film thickness of 35 to 45 microns. This system includes a high-build barrier primer, a 70% PVDF color basecoat, and a protective clear fluoropolymer topcoat to withstand airborne chlorides.
Are you designing commercial curtain wall envelopes, fabricating architectural rainscreen cassettes, or seeking to replace offline powder coating with 20-year warrantied pre-painted aluminum coils?
Contact our architectural technical sales engineering team today to review your facade project specifications and receive a factory-direct quotation within 12 hours.
