Updated: August 2, 2026
In the industrial material selection process, the performance of materials often directly affects the reliability of products and processing efficiency. 1070 aluminum, as a high-purity aluminum material, is frequently used in electrical, heat transfer and custom processing fields. Below, this article will provide a systematic introduction to 1070 aluminum from multiple aspects such as performance, application, and benefits, to help you more clearly assess its adaptability in different projects.
What is 1070 Aluminum?
1070 aluminum is a common commercial-grade high-purity aluminum alloy with approximately 99.7% aluminum content. Due to its simple alloy composition, 1070 aluminum exhibits stable thermal and electrical conductivity properties. It is therefore frequently used in applications demanding high electrical performance and heat transfer capabilities, such as electrical components and heating system-related products.
Properties of 1070 Aluminum
High Electrical Conductivity Properties
With a composition close to 99.7% aluminum, along with limited presence of alloying elements, electrical characteristics are stable for 1070 aluminum. The purity level ensures high conductivity, making it ideal for electrical uses where the transmission of currents is required.
High Thermal Conductivity
When exposed to normal temperatures, the thermal conductivity of hot-working aluminum alloy (1070 aluminum) usually varies from 220-235 W/(m·K). This is higher than that of some of the popular alloy aluminum materials, including the likes of 3003 and 5052.
High Corrosion Resistance
Aluminum 1070 produces a stable natural oxide film when exposed to air, thus possessing high corrosion resistance in an industrial setup.
High surface treatment versatility
Having a simple composition with lower impurities, Aluminum 1070 is ideal for surface treatments such as anodizing. It produces surfaces with good and constant coating characteristics that are ideal in functional and aesthetic purposes.
Low Density and Easy Handling
With a density of close to 2.7 g/cm³, Aluminum 1070 is less than one-third the weight of copper. This goes a long way in allowing your design to overcome the problems of heavy structures by incorporating this material.
High ductility and high formability
While in the annealed condition, the yield strength seen in 1070 aluminum material is about 20 MPa. Its ductility property also recommends it for forming operations like stamping, stretching, and bending, in addition to preventing the possibility of cracking when machining operations are performed.
Moderate Tensile Properties
Aluminum 1070 has a tensile strength ranging between 90-100 MPa and a Poisson’s ratio of 0.33. It may not have high structural applications regarding loading, but it has good control over deformation in functional parts.
Stable Performance
Aluminum 1070 has stable property characteristics within normal industrial temperature ranges; this makes aluminum 1070 suitable for applications involving high temperature with low mechanical stress. However, it should be noted that its mechanical strength properties are weakened towards the melting point of aluminum.
Processing and Forming Performance of 1070 Aluminum
In actual manufacturing, one of the main reasons for the widespread application of 1070 aluminum in functional components is based on its established stability during processing.
Broad Forming Process Compatibility
KDM Fabrication 1070 aluminum has high aluminum purity along with low alloy content. This makes it have high plasticity. The material is resistant to brittle fracture during cold working. The aluminum is also consistent during stamping, stretching, or bending. Therefore, it is ideal for thinly cut sheets, especially where complex contour processing is involved.
Drawing and Deep Drawing
1070 aluminum has high ductility, which allows it to tolerate deformation to some extent. When it comes to multiple-pass drawing and continuous drawing operations, there is less risk of deformation.
Cutting and Machining
While machining, the cutting resistance of 1070 aluminum is low. Thus, the accumulation of internal stress is avoided. On the downside, the hardness is low. This may result in adhesion of the cutting tool to the machined surface or scratches.
Welding and Joining
Aluminum 1070 is highly weldable and thus amenable to forming connections using the different welding processes. In fact, despite its low strength, aluminum 1070’s weldability is much enhanced to carry structural loads. Thus, aluminum 1070 is appropriate for component assembly.
Advantages and Limits of 1070 Aluminum
Durability
KDM Fabrication’s use of 1070 aluminum provides it with high corrosion resistance properties. This material is unaffected by moisture and chemicals.
High Consistency
All 1070 aluminum raw materials are strictly screened and process-controlled, so it can be guaranteed that all batches will perform in a consistent manner.
Customization Capabilities
By taking advantage of the strong ductility of 1070 aluminum, KDM Fabrication is able to customize extrusions based on your requirements, whether it is thickness, width, or other dimensions.
Surface Finishing
We provide various surface treatment processes, which include embossing, brushing, polishing, and anodizing. These processes increase both their functions and beauty as well as their longevity.
Applications of 1070 Aluminum
Electrical Applications
The electrical conductivity of its 1070 aluminum product is of high quality, with about 62% IACS. This product is useful for making electrical components like power lines, bus bars, and cables.
Thermal Management Systems
It has a uniform structure to ensure efficient heat transfer rate in 1070 aluminum. Thus, this type of aluminum is often used in applications involving the continuous dissipation of heat. In environments with moisture and in applications involving repetitive heating and cooling, the aluminium retains a stable performance rate with respect to heat conduction.
Food Industry
Due to its high density, corrosion-resistant property, and high formability, aluminum 1070 is suitable for food-related equipment and packaging with high cleanliness and stability requirements. Its characteristics make it less vulnerable to corrosion and meet the most fundamental requirements of food-related safety and cleanliness.
Aerospace Sector
Light alloy with relatively moderate strength, 1070 aluminum is widely employed to produce structural parts, heat exchangers, and electric conduits. It plays a useful role in decreasing the weight of vehicles, improving fuel efficiency, and ensuring reliability.
Manufacturing and Processing
In the manufacturing and processing sector, the commonly used aluminum alloy is 1070 aluminum, characterized by plentiful plasticity. This alloy does not exhibit variability in its plastic deformation behavior during welding, extrusion, or other forming operations. This makes the alloy particularly suitable for the manufacture of custom structural elements or non-bearing functional components with complex geometrical configurations or thin-wall components.
Reflector and Lighting
With its smooth surface finish and high reflectivity index, 1070 aluminum is used in lighting fixtures and reflectors to improve the efficiency of luminous efficacy and energy utilization.
1070 Aluminum Specifications and Designations
1070 is a wrought, commercially pure aluminum grade with at least 99.7% aluminum. Hydro’s 1050/1070 guidance also identifies purity and conductivity as the central selection reasons. The designation alone does not define strength or formability. Your drawing or RFQ should also state the applicable material standard, product form, temper, thickness, tolerance, and inspection requirements.
| Specification item | Typical 1070 requirement | Why it affects your part |
|---|---|---|
| Grade identity | AA 1070 / UNS A91070; confirm any EN or JIS cross-reference against the governing standard | Similar names do not guarantee identical chemistry or product limits |
| Aluminum content | 99.7% minimum | Purity supports conductivity, corrosion resistance, and reflectivity |
| Temper | O or work-hardened H tempers, as applicable to the product | Temper changes strength, elongation, bendability, and springback |
| Product form | Sheet, coil, foil, wire, bar, slug, or a fabricated part | Available tolerances and property values vary by form and thickness |
| Quality evidence | MTR/CoC, heat or lot traceability, chemistry, dimensions, and required test results | Prevents a general catalog value from becoming an unsupported acceptance criterion |
Mechanical Properties Depend on Temper and Product Form
1070 is selected for purity and formability rather than high structural strength. Published tensile and yield values differ across annealed sheet, work-hardened strip, wire, and other products. Use the values in the applicable material certificate and product standard for acceptance. A catalog value from one temper should not be applied to another.
Cold working raises strength while reducing elongation. This tradeoff affects deep drawing, tight bends, roll forming, and dimensional springback. If a part needs several forming stages, confirm whether intermediate annealing is required and validate the sequence with representative stock.
1070 Compared with 1050, 1060, 1100, and Conductor Grades
| Grade family | Selection emphasis | Boundary to check |
|---|---|---|
| 1050 / 1060 / 1070 | Increasing nominal purity can support conductivity and surface quality | Availability, temper, product standard, and actual certified conductivity |
| 1100 | Widely available commercial-purity alloy with good forming behavior | Do not assume the same chemistry or conductivity as 1070 |
| 1350 / 1370 conductor grades | Electrical conductor applications with specification-based conductivity | 1070 should not replace a conductor grade solely because both are high-purity aluminum |
| Structural 5xxx/6xxx alloys | Higher strength or structural performance | They may sacrifice some conductivity and deep-forming behavior |
What to Put in a 1070 Aluminum RFQ
State the grade and governing standard, then add temper, product form, dimensions, tolerances, surface condition, quantity, and required certification. For electrical parts, define the conductivity requirement and test method. For formed parts, provide bend radii, drawing depth, grain direction, cosmetic limits, and any annealing constraints. For anodized or reflective parts, approve a representative surface sample before production.
FAQ
What are the key differences between 1070 aluminum alloy and 1100 aluminum alloy?
In relation to the 1100 aluminum alloy, the purity of 1070 aluminum is higher since it contains up to 99.7% of aluminum. Consequently, its conductivity is slightly better. It is more useful in applications where high conductivity is desired compared to the 1100 aluminum. On the contrary, the 1100 aluminum combines better strength and machinability compared to the 1070 aluminum. Therefore, its applicability is slightly broader.
What effects can be achieved by anodizing 1070 aluminum?
1070 aluminum is very suitable for anodizing. This method helps to generate a dense oxide film on the surface. As a result, corrosion protection is enhanced along with appearance and wear protection. KDM Fabrication also delivers anodizing services based on specific process conditions related to the requirements of the specific application.
Can 1070 aluminum be recycled?
1070 aluminum is recyclable. Because of the simplicity of its alloys and the relatively high purity levels, there is less loss of material when it is recycled, and a high reuse rate can be achieved. In use, the recycled 1070 aluminum will have good physical and machining properties when it is recycled.
Final Thoughts
KDM Fabrication is a trusted manufacturer of 1070 aluminum products and provides customers with stable and reliable aluminum solutions in sheets, wire, or extruded profiles. Whatever your project requires, we can afford design and production accordingly. Contact KDM Fabrication today—our staff offers one-stop services ranging from material selection to processing up to delivery.