1060 H112 Polished Aluminum Sheet Metal
1060 H112 polished aluminum sheet metal is a widely utilized grade in the aluminum sheet market, known for its superior corrosion resistance, excellent electrical and thermal conductivity, and outstanding surface finish. This product is particularly favored in applications requiring good formability and a bright polished appearance. It belongs to the commercially pure aluminum family (1XXX series), making it inherently soft with a high level of aluminum content (minimum 99.6%).
Alloy Specifications and Chemical Composition
| Element | 1060 Alloy Composition (%) | Standard Tolerance |
|---|---|---|
| Aluminum (Al) | 99.6 min | Basically balance |
| Iron (Fe) | 0.35 max | |
| Silicon (Si) | 0.25 max | |
| Copper (Cu) | 0.05 max | |
| Manganese (Mn) | 0.03 max | |
| Magnesium (Mg) | 0.03 max | |
| Zinc (Zn) | 0.03 max | |
| Titanium (Ti) | 0.03 max |
Standards Reference: Alloy composition adheres to ASTM B209 / B209M specifications.
Temper Designation: H112
The temper designation "H112" for 1060 aluminum sheet specifically refers to a strain-hardened condition where the metal has been cold worked beyond a defined minimum but without full strain hardening, imparting it with moderate strength while maintaining good ductility and surface finish. This texture is very suitable in sheet formats that must endure moderate forming.
- Meaning of “H112”: Non-heat treated, strain-hardened, minimum strength.
- Mechanically tested to guarantee: Tensile strength, yield strength as per industry standard below.
Mechanical Properties
| Property | 1060 H112 Standard Values | Test Method |
|---|---|---|
| Tensile Strength | 70 – 115 MPa | ASTM E8 / ISO 6892 |
| Yield Strength (0.2%) | 35 – 85 MPa | ASTM E8 / ISO 6892 |
| Elongation at break | ≥10% (varies with thickness) | ASTM E8 / ISO 6892 |
| Hardness (Brinell HB) | ~27-40 | ASTM E10 |
| Density | 2.70 g/cm³ | - |
| Electrical Conductivity | ≥60% IACS | ASTM B193 |
Surface Details – Polished Finish
1060 H112 polished aluminum sheets undergo a polishing treatment – usually bright or mirror polishing – to enhance the aesthetic appeal, reduce surface roughness and increase reflectivity. Polishing also improves corrosion resistance and makes the sheet ideal for architectural applications, food-processing environments, and decorative surfaces. The surface finish is measured by roughness average (Ra) can range as low as 0.1 µm depending on the finishing procedure.
Processing and Fabrication
- Formability: Excellent due to high purity and softness of the alloy, suitable for bending, drawing, and spinning.
- Welding: Well-suited for TIG, MIG, and resistance welding.
- Machining: Relatively easy although care needs to be taken due to softness.
Applications
1060 H112 polished aluminum sheet metal is extensively used in an array of industries and products due to its unique combination of strength, workability, corrosion resistance, and surface appearance:
- Architectural cladding, facades, and panels
- Food and beverage industry equipment (due to purity and smooth, polished finish)
- Electrical conductors and bus bars requiring excellent electrical conductivity
- Chemical containers and storage tanks for corrosive materials
- Kitchen utensils and decorative parts
- Reflective devices and lighting fixtures employing polished surfaces for improved light output
Compliance & Standards
- ASTM B209 / B209M: Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate
- ADS-TM-410, GB/T 3880 (Chinese Standard for 1060 Aluminum)
- RoHS, REACH compliant for environmental and safety standards
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