In the field of industrial aluminum alloys, 1070 aluminum plates stand as a core representative of high purity aluminum solutions, engineered specifically for scenarios where electrical conductivity, ductility, and chemical stability are prioritized. Classified under the 1000 series (commercially pure aluminum), 1070 strictly complies with standards such as ASTM B209 (Standard Specification for Aluminum and Aluminum Alloy Sheet and Plate) and EN 573-3, with a minimum aluminum content of 99.70% a critical specification for industries that cannot tolerate performance flaws caused by impurities. Unlike high-strength 7000-series or versatile 6000 series alloys, 1070 centers on the core advantage of “purity-driven functionality”: its minimal alloying elements and strict impurity control make it an ideal choice for thermal management, electrical conduction, and precision forming scenarios, effectively meeting the core needs of clients in the electronics, packaging, and construction sectors for high-reliability, cost-effective pure aluminum materials.
1. Chemical Composition: The Foundation of Purity and Consistency
The performance of 1070 aluminum plates is determined by their ultra-high aluminum content and strictly controlled impurities. As a commercially pure aluminum grade, its composition is deliberately simplified, with only trace alloying elements added to optimize processability without compromising purity. This “simplicity” is not a limitation but a targeted design aimed at preserving aluminum’s inherent properties (e.g., conductivity, corrosion resistance) to suit scenarios requiring high material purity.
Core Composition: Ultra-High Aluminum Content
- Aluminum (Al): ≥99.70% – As the dominant component, it is the core source of 1070’s signature properties: excellent thermal/electrical conductivity, natural corrosion resistance, and superior ductility. High purity ensures consistent performance across every batch, a non-negotiable prerequisite for applications such as electrical busbars and precision heat exchangers.
Controlled Impurities and Trace Elements
Impurity content is strictly limited to avoid compromising conductivity, ductility, or surface quality. In accordance with ASTM B209 and EN 573-3 standards, key limits are as follows:
- Iron (Fe): ≤0.25%. The most common impurity in aluminum; excessive iron forms hard intermetallic compounds (e.g., Al₃Fe), which reduce material ductility and scratch resistance. Controlling iron content below 0.25% ensures 1070 aluminum plates do not crack during deep drawing, bending, or other forming processes.
- Silicon (Si): ≤0.10%. Trace silicon reduces thermal conductivity and may cause surface defects during anodization, hence strict limitation is necessary.
- Copper (Cu): ≤0.03%, Manganese (Mn): ≤0.03%, Zinc (Zn): ≤0.03%. These trace elements are almost completely removed, as even small amounts can reduce electrical conductivity (critical for conductive applications) and increase pitting corrosion risk.
- Other Elements: ≤0.15% in total. Including titanium (Ti) for grain refinement and trace magnesium (Mg), added in small quantities only during the aluminum plate rolling process to optimize processability without altering the inherent properties of pure aluminum.
2. Performance Characteristics: The Perfect Combination of Ductility, Conductivity, and Workability
The advantages of 1070 aluminum plates focus on “formability” and “purity based functionality” rather than high strength setting it apart from highly alloyed aluminum materials. Its performance fully leverages the inherent advantages of pure aluminum, with fine adjustments via tempering (heat treatment or cold working) to adapt to diverse manufacturing needs. Unlike alloys that sacrifice ductility for strength, 1070 strikes a balance between practicality and reliability, making it a “versatile pure aluminum material” for both simple processing and precision manufacturing scenarios.
Mechanical Performance: Ductility as the Core
The mechanical properties of 1070 vary slightly by temper (e.g., Temper O for full annealing, Temper H14 for moderate cold working), but its core characteristic always revolves around “easy formability”:
- Tensile Strength (σb): 70~110 MPa. Lower than alloyed aluminum (e.g., 6061 has a tensile strength of 276 MPa), but sufficient for non-structural applications such as packaging and decorative panels.
- Yield Strength (σ0.2): 30~95 MPa. Low yield strength means the material bends and stretches easily, making it ideal for deep drawing (e.g., aluminum cookware) or roll forming (e.g., electrical enclosures).
- Elongation at Break (δ): 10~35%. Exceptional ductility (up to 35% for Temper O) allows it to be formed into complex geometries without cracking—an advantage unmatched by other high-purity metals like copper.
- Brinell Hardness (HB): 15~30. Moderate hardness enables easy processing (e.g., drilling, cutting) while resisting minor scratches during use (e.g., decorative trim).
Physical and Environmental Performance
The physical properties of 1070 are its core competitive strengths, directly derived from its high aluminum content:
- Thermal Conductivity: 235 W/(m·K). Close to that of pure aluminum (237 W/(m·K)), making it one of the industrial aluminum alloys with the best heat dissipation performance. It is suitable for scenarios such as LED heat sinks, electronic device housings, and heat exchangers.
- Electrical Conductivity: 61% IACS (International Annealed Copper Standard). Superior to most aluminum alloys (e.g., 6061 has an electrical conductivity of only 43% IACS), making it an ideal choice for electrical components such as busbars, cables, and capacitor housings.
- Corrosion Resistance: Excellent (Natural Passivation). The high aluminum content forms a dense oxide film (Al₂O₃) on the surface, preventing further oxidation. Unlike alloyed aluminum, 1070 requires no additional coating for rust prevention in indoor or mild outdoor environments (e.g., architectural trim).
- Density: 2.70 g/cm³. Significant lightweight advantage (30% lighter than copper), reducing material costs and installation weight. It is suitable for weight-sensitive scenarios such as automotive heat shields and aerospace interior parts.
Processing Performance: Easy Manufacturing and Low Cost
The softness and ductility of 1070 make it a “processing-friendly” aluminum material, shortening production cycles and reducing costs:
- Formability: Excellent. It can withstand various processes such as deep drawing, roll forming, bending, and spinning without cracking. For example, it is commonly used to manufacture seamless aluminum cans or curved decorative panels.
- Weldability: Excellent. Compatible with all standard aluminum welding processes (e.g., MIG welding, TIG welding, resistance welding) with minimal post-weld cracking, which is critical for large assembled components such as heat exchanger cores.
- Surface Treatment: Suitable for Multiple Finishing Processes. It performs exceptionally well in anodization (natural/colored), powder coating, and electroplating. Its low impurity content ensures a uniform, blemish free surface, particularly important for decorative parts (e.g., furniture trim) or components in high corrosion environments (e.g., marine electrical enclosures).
- Machinability: Good (with Specialized Tools). The material is soft, enabling fast processing, but lubrication is required to prevent “galling” (material sticking to cutting tools). It is suitable for precision parts such as electrical connectors and sensor housings.
3. Application Scope: Purity Driven Cross Industry Solutions
With its combination of “high purity & high functionality,” 1070 aluminum plates have become a must-have material in industries where “performance is determined by purity.” The following core application areas are directly aligned with its performance advantages, covering diverse scenarios from daily life to industrial production:
Electronics and Electrical Engineering
The electronics industry’s demand for 1070 focuses on its conductivity and thermal management capabilities:
- Electrical Busbars. Used in power distribution systems (e.g., factories, data centers) to transmit high currents efficiently. Its 61% IACS conductivity minimizes energy loss, while its ductility allows custom bending to fit tight spaces.
- Heat Sinks and Thermal Interface Components. Applied in LEDs, CPUs, and power amplifiers. Its thermal conductivity of 235 W/(m·K) rapidly dissipates heat, preventing component overheating and extending service life.
- Capacitor and Battery Housings. Its corrosion resistance and high purity prevent chemical reactions with electrolytes, ensuring long-term reliability for consumer electronics (e.g., smartphones) and industrial batteries.
Packaging and Consumer Goods
The ductility, purity, and food safety of 1070 make it a key material in the packaging industry:
- Food-Grade Aluminum Foil Composites. Used in flexible packaging (e.g., snack wrappers, beverage cartons). Its high purity prevents impurity migration into food, while its ductility allows rolling to ultra-thin thicknesses (down to 0.005 mm) without tearing.
- Cookware and Tableware. Processed into lightweight, evenly heat-conducting pots, pans, and baking sheets. Its natural corrosion resistance eliminates the need for toxic coatings, complying with global food safety standards (e.g., FDA, EU 10/2011).
- Aerosol Cans. Manufactured into seamless cans via deep drawing for cosmetics, cleaning products, and pharmaceuticals. Its ductility ensures uniform can wall thickness, while its corrosion resistance protects contents from metal contamination.
Construction and Architectural Design
In construction scenarios, the advantages of 1070 lie in its aesthetics, corrosion resistance, and formability:
- Decorative Panels and Trim. After anodize or powder coating, they are used for indoor/outdoor decoration (e.g., building facades, furniture edges). The uniform surface finish and rich color options enhance visual appeal.
- Heat Reflective Panels. Installed in roof or wall insulation systems. The polished surface has a heat reflectivity of over 80%, reducing solar heat absorption and lowering building energy costs.
- Electrical Conduits. Used for wire protection in commercial buildings. Their corrosion resistance ensures durability in humid or dusty environments, while their lightweight design simplifies installation.
Industrial and Aerospace Sectors
Even in heavy industrial scenarios, 1070 plays a key role in non-structural components:
- Heat Exchanger Cores. Used in industrial chillers and automotive HVAC systems. Its thermal conductivity and weldability ensure efficient heat transfer, while its lightweight design reduces overall system weight.
- Aerospace Interior Components. Applied in cabin trim, luggage racks, and electrical enclosures. Its purity complies with aerospace material standards (e.g., AMS-QQ-A-250/1), and its corrosion resistance adapts to temperature and humidity changes in the cabin.
- Precision Instrument Housings. Used for sensors, measuring instruments, and laboratory equipment. Its low impurity content prevents electromagnetic interference (EMI), ensuring accurate instrument readings.
Partner with Us for High-Quality 1070 Aluminum Plates
Shanghai Miandi Metal Group Co., Ltd. specializes in manufacturing 1070 aluminum plates that meet strict global standards (ASTM B209, EN 573-3, AMS-QQ-A-250/1). We use high-purity aluminum ingots (Al content ≥99.70%) and advanced rolling technology to ensure uniform plate thickness (0.2 mm–50 mm) and excellent surface quality. Each batch can provide Material Test Certificates (MTC) and third-party test reports. Relying on decades of metal manufacturing experience, we have built a full-chain service capability covering R&D, production, processing, and testing. Our products are sold at home and abroad, serving high-end industries such as aerospace, automotive, semiconductors, and new energy.
We can provide customized solutions to meet your specific needs:
- Custom Sizes: Equipped with professional sawing equipment, we can perform rough and fine processing on materials within 2600 mm, providing cut-to-length plates or full-width plates (maximum width 2000 mm) according to requirements, reducing material waste;
- Surface Treatment: We offer anodization (natural/colored), powder coating, and polishing services to improve aesthetics and corrosion resistance, adapting to decorative and high-corrosion environment needs;
- Precision Machining: With 14 vertical machining centers, 2600 mm gantry machining centers, and JDMR600 5-axis high-speed machining centers, we can achieve composite processing such as milling, grinding, drilling, boring, and tapping, with a machining accuracy of ±0.03 mm. We can customize precision electrical busbars for the electronics industry, process food-grade irregular containers for the packaging industry, and manufacture customized heat reflective panels for the construction sector, delivering ready-to-install finished parts directly.
Whether you are an electronics manufacturer in need of high-conductivity aluminum, a packaging enterprise seeking food grade materials, or a construction company looking for decorative aluminum 1070 aluminum plates are a high-purity, high-reliability choice. Contact us today to request technical data sheets, samples, or customized quotes, and let Shanghai Miandi Metal Group Co., Ltd. help you transform “purity” into “performance.”
Choose 1070, Choose Shanghai Miandi Metal Group Co., Ltd.
Post time: Nov-17-2025