1060 and 1070 belong to the 1xxx series of commercially pure aluminum. They cannot be strengthened by heat treatment and instead rely on the inherent properties of pure aluminum. The aluminum purity is ≥99.6% for 1060 and ≥99.7% for 1070. These alloys feature excellent plasticity, superior electrical and thermal conductivity, good corrosion resistance, and outstanding weldability; however, their hardness and strength are very low, making them unsuitable for heavy-load applications. 1070 has a higher purity level, offering better electrical and thermal conductivity, as well as superior results in polishing and anodizing compared to 1060. Common supply tempers include O (annealed/soft) and H112; the density is 2.70 g/cm³.

Key comparisons: Very low strength; 1070 outperforms 1060 in terms of plasticity, electrical conductivity, and polishability; 1060 is more cost-effective

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Chemical composition

Executive Standards

Chinese National Standard (GB): GB/T 3191-2019 "Extruded bars of aluminium and aluminium alloys"; Chemical composition per GB/T 3190

American Standard (ASTM): ASTM B221

European Standard (EN): EN AW-1060 (Al99.6), EN AW-1070 (Al99.7) per EN 573-3

Specifications + Standard Stock Sizes

Shapes: Round bars (primary), square bars, hexagonal bars

Temper/Condition: O, H112 (T6/T651 not available; non-heat-treatable)

Tolerances: Standard extrusion tolerances / High-precision tolerances for precision-turned (bright) bars

Mechanical properties

Note: The "O" (annealed) temper offers superior plasticity and higher elongation. Its strength cannot be enhanced through heat treatment; the material tends to be "sticky" during machining, often causing it to adhere to cutting tools.

Application Scenarios

1060 Aluminum Rod

1. Conductive components: Aluminum busbars, conductive terminals, and busbar blanks.

2. Heat dissipation: Simple heat sinks and heat-exchange components.

3. Decorative signage: Nameplates, reflective components, and decorative blanks.

4. Chemical/corrosion-resistant applications: Linings for corrosion-resistant vessels and non-pressure-bearing chemical components.

5. General welded parts: Non-load-bearing components formed via bending or deep drawing.

1070 Aluminum Rod

1. High-end conductive applications: High-purity busbars, conductive bars for charging stations, and electronic conductive components.

2. Optical reflectors: Reflectors for lighting fixtures and mirror-polished decorative parts.

3. Precision anodized components: High-purity decorative parts that yield pure, consistent colors upon anodizing.

4. Food and pharmaceutical equipment: Components for clean-room equipment, characterized by high purity and minimal impurities.

5. Precision deep-drawing blanks: Parts requiring exceptional plasticity for deep-drawing processes.

Caution: Not suitable for load-bearing structural components; poor machinability due to a tendency to adhere to cutting tools.