Aluminum Coil
Aluminum Coil is a continuously wound aluminum product processed from aluminum and aluminum alloys through hot rolling or cold rolling. It is an important intermediate product in the aluminum processing industry chain, which can be directly applied in various industrial fields or used as feedstock for further processing into sheets, strips, foils, and other products. Our aluminum coils cover multiple alloy series including 1xxx, 3xxx, 5xxx, and 6xxx. They feature excellent flatness, high dimensional accuracy, good surface quality, and neat coil form, and are widely used in building decoration, transportation, home appliance manufacturing, HVAC, packaging, power electronics, and many other sectors of the national economy.
I. Product Classification
Classification | Type | Description |
By Alloy Series | 1xxx Pure Aluminum Coil (1060, 1070, 1100) | Purity ≥99.0%, good electrical and thermal conductivity, excellent plasticity; suitable for general industrial use and downstream processing |
| 3xxx Al-Mn Alloy Coil (3003, 3004) | Good anti-rust performance, higher strength than pure aluminum; ideal for curtain walls, tanks, insulation materials |
| 5xxx Al-Mg Alloy Coil (5052, 5083, 5754) | High strength, excellent seawater corrosion resistance; suitable for demanding applications such as marine, vehicles, welded structures |
| 6xxx Al-Mg-Si Alloy Coil (6061) | Medium strength, heat-treatable; suitable for mechanical structural parts and framing materials |
By Processing Method | Hot-Rolled Coil | Rolled on hot rolling mills; dense structure, suitable for thick gauges and high-strength applications with good flatness |
| Cold-Rolled Coil | Rolled on cold rolling mills in multiple passes; smooth surface, high dimensional accuracy, suitable for thin gauges and decorative applications |
By Surface Condition | Mill Finish | Standard rolled surface; suitable for general industrial use |
| Film-Laminated | PE protective film applied to prevent scratches and oxidation |
| Oiled | Anti-rust oil applied; suitable for stamping and deep drawing |
| Color Coated | Coated with color paint for both decorative and protective functions |
By Thickness | Thin Coil (0.10mm – 2.0mm) | Used for packaging, decoration, appliances, AC foil feedstock |
| Medium-Thick Coil (2.0mm – 8.0mm) | Used for curtain walls, transportation, general structural applications |
| Thick Coil (8.0mm – 200mm) | Used for molds, machinery manufacturing, aerospace structures (hot-rolled) |
II. Product Specifications
Item | Parameters |
Alloy Range | 1xxx (1060, 1070, 1100), 3xxx (3003, 3004), 5xxx (5052, 5083), 6xxx (6061), etc. |
Thickness Range | 0.10mm – 200mm (customizable) |
Width Range | 100mm – 2600mm (customizable) |
Coil Inner Diameter | Φ150mm / Φ300mm / Φ505mm / Φ610mm (standard options) |
Coil Outer Diameter | Typically ≤ 1800mm (customizable) |
Coil Weight | Customized (typically 500kg – 15000kg per coil) |
Surface Condition | Mill finish, film-laminated, oiled, color coated (optional) |
Protective Film | PE protective film (clear/blue/white, thickness 0.04mm–0.10mm) |
Applicable Standards | GB/T 3880 / ASTM B209 / EN 485 |
III. Product Features
Feature | Description |
Continuous Supply | Coil form is ideal for automated continuous production lines, significantly improving efficiency and reducing changeover downtime |
Excellent Flatness | Advanced rolling and shape control systems ensure flat surface without waves, warping, or other shape defects |
Uniform Thickness | Equipped with AGC (Automatic Gauge Control) system; thickness deviation controlled within minimal range for precision processing |
Good Surface Quality | Clean rolled surface, free from oil stains, scratches, corrosion spots, indentations, and other defects |
High Dimensional Accuracy | Strictly controlled width and thickness tolerances to meet downstream slitting, cutting, stamping, and other processing requirements |
Neat Coil Form | Precision winding control with neat end faces; telescoping and misalignment controlled within standards; does not loosen during transport and use |
Lightweight & High Strength | Aluminum density is only 1/3 of steel; significantly reduces structural weight while meeting strength requirements |
Strong Corrosion Resistance | Natural dense oxide film provides excellent atmospheric corrosion resistance; 5xxx alloys are especially suitable for marine environments |
Good Workability | Supports uncoiling, leveling, slitting, cross-cutting, stamping, bending, stretching, welding, and various other subsequent processing |
Good Thermal & Electrical Conductivity | Aluminum's conductivity is second only to copper; ideal for power electronics and heat exchange applications |
100% Recyclable | Aluminum coils are fully recyclable, in line with green manufacturing and circular economy concepts |
IV. Application Fields
Application Field | Specific Uses |
Building & Decoration | Curtain wall panels, aluminum composite panel substrates, corrugated roof sheets, suspended ceilings, roller shutter doors, canopies, insulation outer layers |
Transportation | Automotive body panel blanks, high-speed train and subway body skins, ship hull plates, container panels, tanker body coils |
Home Appliances | Refrigerator side/back panels, washing machine housings, air conditioner panels, water heater tank coils, microwave cavity blanks |
HVAC & Refrigeration | AC heat exchanger fin coils, radiator fins, refrigerator evaporator plates, ventilation duct insulation coils |
Packaging | Food packaging composite substrates, can lid/body stock, pharmaceutical foil blanks, cigarette inner liner coils |
Industrial Manufacturing | Machinery housings, electrical cabinet shells, instrument panels, chemical equipment anti-corrosion linings |
Power & Electronics | Busbar coils, power capacitor housings, cable shielding coils, LED heat sink substrates |
Aerospace | Aircraft skin blanks, fuselage structural thick coils, rocket fuel tank sheet blanks |
Food Industry | Food storage tank coils, brewing equipment sheets, food transport tank coils |
Printing | PS plate substrate coils, CTP plate substrate coils |
V. Common Alloy Performance Comparison
Alloy Grade | Thickness Range (mm) | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Key Characteristics | Typical Applications |
1060 | 0.10 – 200 | 60 – 95 | ≥20 | ≥15 | Purity ≥99.6%, excellent plasticity, good conductivity | Chemical equipment, busbars, deep-drawing materials |
1100 | 0.10 – 200 | 75 – 110 | ≥35 | ≥12 | Industrial pure aluminum, balanced properties, cost-effective | General industrial coils, decorative coils, cookware blanks |
3003 | 0.15 – 100 | 130 – 180 | ≥85 | ≥10 | Good anti-rust, moderate strength, excellent workability | Curtain wall coils, tank coils, AC foil blanks |
3004 | 0.20 – 80 | 150 – 200 | ≥100 | ≥8 | Higher strength than 3003, excellent anti-rust | Can body stock, insulation materials, marine interiors |
5052 | 0.20 – 50 | 195 – 260 | ≥130 | ≥10 | Excellent seawater corrosion resistance, high strength | Marine coils, automotive body panels, fuel tank materials |
5083 | 0.50 – 80 | 275 – 350 | ≥180 | ≥10 | Highest strength among non-heat-treatable alloys, excellent corrosion resistance | Ship structures, pressure vessels, offshore engineering |
6061 | 0.50 – 150 | 240 – 310 | ≥180 | ≥10 | Heat-treatable, medium strength, good workability | Structural frameworks, mechanical parts, mold coils |
VI. Temper Designations Description
Temper | Meaning | Characteristics | Suitable Applications |
O | Annealed (fully soft) | Lowest strength, best plasticity, easiest to form | Stamping, deep drawing, spinning |
H12 / H22 | 1/4 Hard | Light work-hardening, good plasticity, good bendability | Shallow stamping, bending forming |
H14 / H24 | 1/2 Hard | Medium strength, balanced mechanical properties | Building decoration coils, general structural coils |
H16 / H26 | 3/4 Hard | Higher strength, retains some plasticity | Structural parts requiring higher strength |
H18 | Full Hard | Highest strength, lowest plasticity | Rigid structures or wear-resistant parts requiring high hardness |
H32 | Stabilized | Work-hardened and stabilized, stable properties | Marine materials, offshore engineering coils |
VII. Typical Thickness & Width Reference
Thickness Range | Recommended Width Range | Common Applications |
0.10 – 0.30mm | 500 – 1600mm | AC foil blanks, packaging foil blanks, electronic foil blanks |
0.30 – 1.0mm | 600 – 2000mm | Color coating base coils, household foil blanks, decorative coils, stamping materials |
1.0 – 3.0mm | 800 – 2200mm | Curtain wall coils, automotive body panel blanks, general structural coils |
3.0 – 8.0mm | 1000 – 2600mm | Ship plate blanks, tank coils, thick plate blanks |
8.0 – 200mm | 1000 – 2600mm | Hot-rolled thick coils, mold plate blanks, aerospace structural plate blanks |
VIII. Aluminum Coil Surface Treatment Types
Treatment Type | Description | Recommended Applications |
Uncoated (Plain Coil) | Directly rolled without any surface treatment | General industrial use, downstream processing feedstock |
Film-Laminated | PE protective film applied (single/double-sided) | Decorative coils with high surface quality requirements, appliance panel coils |
Oiled | Volatile anti-rust oil applied | Stamping and drawing coils; prevents friction scratches between die and material |
Color Coated | Surface cleaned, chemically treated, painted, and baked | Curtain walls, roofing sheets, roller shutter doors, appliance panels |
Anodized | Anodized to form oxide protective layer | Outdoor coils requiring high weatherability and decoration |
IX. Quality Control
Test Item | Standard | Description |
Chemical Composition | GB/T 3190 / ASTM B209 | Direct-reading spectrometer analysis ensuring all element contents meet standards |
Thickness Tolerance | GB/T 3880 / ASTM B209 | AGC online control + offline sampling; strictly controlled within standards |
Width Tolerance | In-house standard | High-precision slitting ensuring width consistency |
Flatness / Shape | In-house standard | Shape meter equipped; no waves, warping, twisting, or other defects |
Surface Quality | Visual / bright light inspection | No cracks, peeling, bubbles, indentations, scratches, oil stains, corrosion, etc. |
Mechanical Properties | GB/T 228 / ASTM E8 | Tensile strength, yield strength, elongation meet standards |
Coil Quality | In-house standard | Tightly wound, neat end faces, telescoping/misalignment ≤5mm |
Surface Roughness | GB/T 2523 | Ra value controllable per customer requirements for different downstream processes |
X. Packaging Method
Packaging Step | Description |
Rust/Moisture-Proof Packaging | Coils tightly wrapped with rust-proof paper or moisture-proof plastic film to prevent oxidation |
Inner Ring Protection | Inner support rings or inner edge protectors installed to prevent coil deformation |
Outer Wrapping | Stretch film wrapping plus composite kraft paper or corrugated cardboard |
Edge Protection | Paper/plastic/metal edge protectors on ends to prevent impact damage |
Steel Strapping | Galvanized steel strips or high-strength plastic straps for cross or circular bundling to prevent loosening during transit |
Desiccant | Desiccant placed inside packaging if necessary to prevent moisture during sea transport |
Labeling | Product label attached (alloy grade, specification, thickness, width, coil number, net weight, production date, etc.) |
Pallet / Base | Coils placed on wooden or heat-treated plywood pallets for forklift handling |
XI. Why Choose Yixintong's Aluminum Coil?
Advantage | Description |
Factory Direct | Integrated production and sales, no intermediaries, more competitive pricing |
Sufficient Stock | Four factory warehouses; regular specifications in 1xxx, 3xxx, 5xxx, 6xxx kept in stock for immediate shipment |
Complete Specifications | Thickness from 0.10mm to 200mm, width 100mm to 2600mm, custom sizes supported |
Excellent Flatness | Advanced shape control system ensures flat surfaces; neat winding with end face alignment ≤5mm |
Precise Dimensional Control | AGC automatic thickness control system ensures minimal thickness deviation for precision processing |
Strong Production Capacity | Annual comprehensive capacity over 3 million tons, ensuring reliable delivery for large orders |
Stable Quality | Full-process quality management from melting and casting to cold rolling and finishing with traceability at every stage |
Diverse Surface Treatment Options | Mill finish, film-laminated, oiled, color coated, anodized, and more |
Rich Application Experience | Products exported to many countries and regions, trusted by overseas customers |
