1350 Aluminium Sheet Coil: High-Purity Conductive Solution for Industrial & Electrical Applications
Our 1350 aluminium sheet coil stands as a premium member of the 1xxx series pure aluminium alloys, distinguished by its exceptional purity (aluminium content ≥99.50%) and outstanding electrical conductivity. As a non-heat-treatable alloy, 1350 aluminium achieves enhanced strength through cold working, making it adaptable to a range of tempers-from soft O temper for intricate forming to full-hard H18 for structural stability. Widely recognized as the go-to material for high-conductivity applications, 1350 aluminium sheet coil delivers consistent performance, superior processability, and long-term reliability. Trusted by manufacturers in the electrical, automotive, and industrial sectors across Europe, North America, Asia, and the Middle East, our 1350 sheet coils are engineered to meet strict international standards, ensuring seamless integration into your high-precision production lines. Below, we detail the core properties, technical specifications, key applications, and processing insights to help you leverage the unique advantages of this high-purity aluminium alloy.
Crafted from top-grade aluminium ingots, our 1350 aluminium sheet coil undergoes a refined manufacturing process tailored to preserve its high-purity properties. We start with precise melting and rigorous impurity control to maintain aluminium content above 99.50%, eliminating contaminants that could hinder conductivity. This is followed by continuous casting to achieve a uniform grain structure, which is critical for consistent mechanical and electrical performance. Multi-pass cold rolling (adjusted for specific tempers) and controlled annealing ensure tight thickness tolerance and stable material properties. Every sheet coil undergoes strict quality inspections-from laser-guided thickness measurements (tolerance as low as ±0.02mm) to surface defect detection and conductivity testing. The result is a 1350 aluminium sheet coil with exceptional electrical conductivity, smooth surface finish, and reliable dimensional accuracy, perfect for high-volume electrical component production and custom industrial applications.
Core Properties of 1350 Aluminium Sheet Coil
1350 aluminium's reputation is built on its unique combination of high purity, superior conductivity, and excellent processability-properties that make it irreplaceable in many high-performance applications. Unlike lower-purity 1xxx series alloys, 1350 is optimized for electrical and thermal transfer, while retaining the natural advantages of aluminium. Here are the key characteristics that set 1350 aluminium sheet coil apart:
1. Exceptional High Purity & Corrosion Resistance
With aluminium content ≥99.50%, 1350 aluminium boasts superior corrosion resistance, especially in atmospheric environments, fresh water, and mild chemical conditions. A dense, self-healing oxide layer forms on its surface, providing a robust protective barrier against oxidation and degradation. This ensures long-term durability in both indoor electrical enclosures and outdoor industrial settings, eliminating the need for frequent maintenance or additional anti-corrosion treatments.
2. Outstanding Electrical Conductivity
1350 aluminium is renowned for its exceptional electrical conductivity-achieving 62% IACS (International Annealed Copper Standard) in O temper, making it one of the most conductive aluminium alloys available. This high conductivity is only slightly lower than that of copper, while offering significant cost and weight advantages. For electrical applications requiring efficient current transfer, 1350 aluminium sheet coil is a cost-effective and performance-driven alternative to copper.
3. Excellent Thermal Conductivity
Complementing its electrical conductivity, 1350 aluminium offers excellent thermal conductivity (235 W/(m·K) in O temper). This makes it ideal for heat transfer applications, as it efficiently dissipates heat from electrical components, automotive systems, and industrial machinery. The combination of high electrical and thermal conductivity makes 1350 aluminium a versatile choice for applications where both properties are critical.
4. Superior Formability & Ductility
1350 aluminium exhibits excellent formability, capable of being bent, stamped, deep drawn, rolled, and welded with ease. Even in cold-worked tempers (such as H14 or H18), it retains sufficient ductility to avoid cracking or tearing during complex fabrication processes. This versatility allows manufacturers to create intricate shapes-from thin-gauge electrical bus bars to custom heat sinks-without compromising material integrity.
5. Adjustable Strength via Temper Control
As a non-heat-treatable alloy, 1350 aluminium's strength is adjusted through cold working and annealing. We offer 1350 aluminium sheet coil in various tempers to match the specific requirements of your application:
O Temper (Annealed): Soft and highly ductile (elongation ≥35%), maximum electrical conductivity (62% IACS), ideal for complex forming processes like deep drawing, stamping, and bending of intricate electrical components.
H14 Temper (Half-Hard): Balances strength and conductivity (tensile strength: 110-140 MPa, elongation ≥10%, conductivity 60% IACS), suitable for general-purpose electrical applications like bus bars, transformer windings, and heat sink fins.
H18 Temper (Full-Hard): Highest strength (tensile strength: 150-180 MPa, elongation ≥5%, conductivity 58% IACS), ideal for load-bearing electrical components and structural parts that require enhanced rigidity while maintaining good conductivity.
6. Cost-Effective & Eco-Friendly
Compared to copper, 1350 aluminium offers significant cost savings while delivering comparable conductivity for most applications. Additionally, it is 100% recyclable with minimal loss of quality, aligning with global sustainability goals. For businesses looking to reduce production costs, lower material weight, and minimize environmental impact, 1350 aluminium sheet coil is a practical and responsible choice.
Technical Specifications of 1350 Aluminium Sheet Coil
Our 1350 aluminium sheet coil complies with international standards (ASTM B209, EN 485-2, GB/T 3880) and is tailored to meet the precise requirements of high-conductivity applications. Below are the detailed technical parameters:
1. Alloy Composition
Aluminium (Al): ≥ 99.50%
Silicon (Si): ≤ 0.10%
Iron (Fe): ≤ 0.40%
Copper (Cu): ≤ 0.05%
Zinc (Zn): ≤ 0.05%
Manganese (Mn): ≤ 0.03%
Other impurities: ≤ 0.15% (total)
2. Mechanical & Electrical Properties (By Temper)
O Temper: Tensile strength = 75-95 MPa, Yield strength = 30-50 MPa, Elongation (50mm) = ≥35%, Hardness (HV) = 20-30, Electrical conductivity = 62% IACS, Thermal conductivity = 235 W/(m·K)
H14 Temper: Tensile strength = 110-140 MPa, Yield strength = 90-120 MPa, Elongation (50mm) = ≥10%, Hardness (HV) = 35-45, Electrical conductivity = 60% IACS, Thermal conductivity = 230 W/(m·K)
H18 Temper: Tensile strength = 150-180 MPa, Yield strength = 130-160 MPa, Elongation (50mm) = ≥5%, Hardness (HV) = 45-55, Electrical conductivity = 58% IACS, Thermal conductivity = 225 W/(m·K)
3. Dimensional Specifications
Thickness range: 0.1 mm - 6.0 mm (common specs: 0.1-0.5 mm for electrical components, 0.5-2.0 mm for heat sinks/bus bars, 2.0-6.0 mm for structural electrical parts)
Thickness tolerance: ±0.02 mm (for 0.1-1.0 mm), ±0.05 mm (for 1.0-3.0 mm), ±0.1 mm (for 3.0-6.0 mm)
Width range: 800 mm - 2500 mm (custom widths available to minimize slitting waste; precise slitting ensures clean, burr-free edges)
Coil weight: 300 kg - 5000 kg (custom weights for easy handling; tight winding prevents deformation during storage/transport)
Inner diameter: 508 mm or 610 mm (standard sizes for industrial processing equipment)
4. Surface Finish
Mill Finish: Natural rolling finish, Ra: 0.3-0.5 μm, smooth and uniform, free of scratches, oil stains, or oxidation spots (ideal for most electrical and industrial applications, as it ensures good conductivity and easy soldering/welding)
Polished Finish (Optional): Mirror or brushed finish, Ra ≤ 0.05 μm for mirror polish (suitable for high-precision electrical components requiring enhanced surface conductivity and aesthetic appeal)
Chemical Cleaning Finish (Optional): Degreased and oxide-free surface, ensuring optimal adhesion for coatings or soldering (ideal for electrical components that require additional surface treatments)
5. Standards & Certifications
Compliance Standards: ASTM B209 (USA), EN 485-2 (Europe), GB/T 3880 (China), IEC 60228 (for electrical conductor applications)
Certifications: ISO 9001 (Quality Management System), ISO 14001 (Environmental Management System); Detailed Material Test Reports (MTR) available for each coil, including chemical composition, mechanical properties, electrical conductivity, and surface quality inspection results
Key Applications of 1350 Aluminium Sheet Coil
1350 aluminium sheet coil's high conductivity, formability, and purity make it ideal for a range of high-performance applications, particularly in the electrical and industrial sectors. Below are the most common use cases, aligned with the alloy's properties and tempers:
1. Electrical Applications (Core Use Case)
O/H14 Temper: Electrical bus bars (low, medium, and high voltage), transformer windings, power distribution cables, and switchgear components. The high electrical conductivity ensures efficient current transfer, while the formability allows for custom shapes to fit tight electrical enclosures. 1350 aluminium's lightweight properties also reduce the overall weight of electrical equipment, making it easier to install and transport.
H18 Temper: Heavy-duty electrical bus bars, structural components of electrical cabinets, and high-load electrical connectors. The enhanced strength ensures structural stability, while maintaining good conductivity for reliable power transmission.
2. Thermal Management Applications
O/H14 Temper: Heat sinks for electronic devices (LEDs, CPUs, power modules), radiator fins, and heat exchanger cores. The excellent thermal conductivity efficiently dissipates heat, preventing overheating of sensitive components. The formability allows for the creation of complex heat sink designs (e.g., finned structures) to maximize heat transfer area.
3. Automotive & Transportation
H14/H18 Temper: Automotive electrical components (battery terminals, wiring harnesses, alternator parts), heat shields, and lightweight structural parts. The high conductivity ensures reliable electrical performance in vehicles, while the lightweight properties improve fuel efficiency. 1350 aluminium's corrosion resistance also makes it suitable for under-hood applications exposed to moisture and automotive fluids.
4. Industrial Applications
O/H14 Temper: Industrial heating elements, electrolytic cell components, and precision industrial tools requiring high conductivity. The purity of 1350 aluminium ensures consistent performance in industrial processes, while the formability allows for custom fabrication of specialized equipment.
H18 Temper: Industrial machinery structural parts, conveyor components, and load-bearing industrial panels. The enhanced strength provides durability in harsh industrial environments, while the corrosion resistance ensures long service life.
5. Packaging & High-Purity Applications
O Temper: High-purity packaging for pharmaceuticals, chemicals, and food products requiring non-toxic, corrosion-resistant materials. The high purity of 1350 aluminium ensures no contamination of the packaged goods, while the formability allows for the creation of custom packaging shapes.
Processing & Fabrication Tips for 1350 Aluminium Sheet Coil
1350 aluminium sheet coil is easy to process, but proper techniques are critical to preserve its high conductivity and mechanical properties. Below are practical tips tailored to different tempers and thicknesses:
1. Coil Handling & Storage
Handle coils with soft slings or rubber-coated hooks to avoid surface scratches-scratches can affect conductivity and surface adhesion. For thin gauges (≤0.5mm), use extra care to prevent deformation, as thin sheets are more prone to bending.
Store coils in a dry, clean, temperature-controlled warehouse (15-25°C, relative humidity ≤ 60%) away from moisture, dust, and corrosive substances. Wrap coils in moisture-resistant film and anti-corrosion paper for long-term storage to prevent oxidation, which can degrade conductivity.
Keep coils vertically on dedicated racks to prevent warping. Avoid stacking coils, as this can cause surface damage and dimensional distortion.
2. Cutting & Slitting
Use precision slitting equipment with sharp carbide blades to ensure clean, burr-free edges. Burrs can cause electrical arcing in conductive applications, so post-slitting deburring may be required for high-precision electrical components.
For thin gauges (≤0.5mm), reduce slitting speed to avoid material tearing or edge deformation. Ensure the slitting equipment is clean and free of debris to prevent surface scratches that could impact conductivity.
3. Forming & Bending
Follow the recommended minimum bend radius: O temper (2x material thickness), H14 temper (3x material thickness), H18 temper (4x material thickness). Sharp bends can cause micro-cracks, which reduce strength and may impact conductivity. For complex forming processes (deep drawing, stamping) with H14/H18 tempers, pre-heat the material to 80-120°C to improve ductility, then cool naturally to retain temper properties.
Avoid overworking the material during forming, as this can increase hardness and reduce conductivity. For electrical applications requiring maximum conductivity, use O temper and minimize cold working after annealing.
4. Welding & Joining
Weld 1350 aluminium using MIG/TIG welding with ER1350 filler metal to maintain consistent conductivity and material properties. Use low welding current to avoid burn-through, especially for thin gauges. Ensure the welding area is clean and free of oil, dust, or oxide layers, as contaminants can create porosity and reduce weld strength.
For electrical components, soldering is preferred over welding where possible, as it minimizes heat-affected zones that can reduce conductivity. Use a flux compatible with aluminium and ensure the surface is clean before soldering.
For mechanical joining, use aluminium or stainless steel fasteners to avoid galvanic corrosion. Pre-drill holes with sharp bits at moderate speed to prevent material chipping-uniform thickness ensures consistent drilling performance.
5. Surface Treatment
For electrical applications, avoid heavy surface coatings that can reduce conductivity. If coating is necessary, use thin, conductive coatings and ensure the coating is applied evenly.
Before welding, soldering, or coating, clean the surface with a mild alkaline cleaner or chemical etchant to remove oxide layers and contaminants. For high-conductivity applications, a light acid wash followed by rinsing and drying is recommended to ensure optimal surface conductivity.
Our Quality Assurance & Customization Services
We understand that high-conductivity applications demand precise material quality and tailored solutions. That's why our 1350 aluminium sheet coil is backed by strict quality control processes and personalized customization services to meet your unique needs:
Strict Quality Control: Every coil undergoes multi-stage inspections, including raw material purity testing (optical emission spectrometry), electrical conductivity testing (using precision conductivity meters), thickness uniformity checks (laser gauges), surface quality inspections (automated vision systems), and mechanical property testing (tensile testing). We reject any coil that fails to meet our strict standards for conductivity, purity, or surface quality.
Full Traceability: Each coil is assigned a unique batch number, allowing full traceability from raw material to finished product. We provide detailed MTR reports with every shipment, including conductivity test results, so you can verify the performance of your 1350 aluminium sheet coil.
Tailored Customization: We offer custom tempers (O, H14, H18), thicknesses (0.1-6.0mm), widths (800-2500mm), and coil weights (300-5000kg) to match your production line requirements. For surface finishes, we provide custom polished or chemical cleaning options. Our engineering team can recommend the ideal temper and specifications based on your application's conductivity, strength, and formability needs.
Technical & Logistics Support: Our team of aluminium experts provides personalized guidance on processing, forming, welding, and surface treatment for 1350 aluminium sheet coil, ensuring you maximize its performance in your application. We offer free technical samples for testing, so you can verify conductivity and formability before placing large orders. We use specialized packaging (protective film, anti-scratch liners, wooden crates) to ensure coils arrive in perfect condition, and offer global shipping with on-time delivery guarantees to keep your production on schedule.
When it comes to high-conductivity, high-purity aluminium applications, 1350 aluminium sheet coil delivers the performance, reliability, and cost-effectiveness you need. Trust our expertise in 1xxx series aluminium alloys to provide you with tailored solutions that optimize your production efficiency and end-product quality. Contact us today to discuss your specific requirements, request a technical sample, or get a customized quote.
