1145-O Aluminum alloy,Aluminum 1145-O alloy,E FORU

### **1145-O Aluminum Alloy Product Introduction** **1. Overview** 1145-O is the annealed temper of a high-purity aluminum alloy from the 1xxx series, featuring excellent formability and good electrical conductivity. The "O" temper designation indicates that the material has been fully annealed to achieve maximum softness and workability. With its high aluminum content and optimized impurity control, 1145-O offers superior performance for applications requiring extreme forming operations while maintaining excellent electrical and thermal conductivity. **2. Chemical Composition (Typical, % by Weight)** The composition features high purity with controlled impurity levels. | Element | Content (%) | |---------|-------------| | **Aluminum (Al)** | ≥99.45 | | **Iron (Fe)** | ≤0.30 | | **Silicon (Si)** | ≤0.25 | | **Copper (Cu)** | ≤0.05 | | **Manganese (Mn)** | ≤0.05 | | **Zinc (Zn)** | ≤0.05 | | **Other Elements (Each)** | ≤0.03 | | **Other Elements (Total)** | ≤0.10 | *Note: The high purity composition (99.45% min aluminum) ensures excellent electrical conductivity and superior formability in the annealed condition.* **3. Physical Properties** | Property | Value | |----------|-------| | **Density** | 2.71 g/cm³ | | **Melting Point** | 646-657°C | | **Electrical Conductivity** | 62% IACS | | **Thermal Conductivity** | 234 W/(m·K) | | **Coefficient of Thermal Expansion** | 23.4 × 10⁻⁶/K (20-100°C) | | **Modulus of Elasticity** | 69 GPa | **4. Mechanical Properties (Typical for O Temper)** The O temper provides the softest condition with maximum ductility for 1145 aluminum. | Property | Value | |----------|-------| | **Tensile Strength** | 70-95 MPa | | **Yield Strength (0.2% Offset)** | 25-40 MPa | | **Elongation (% in 50mm)** | 35-45% | | **Hardness (Brinell)** | 22-27 HB | *Key Characteristics of O Temper:* * **Exceptional Ductility**: High elongation capability for severe forming operations * **Excellent Formability**: Ideal for deep drawing, spinning, and complex forming * **High Conductivity**: Good electrical and thermal conductivity * **Low Strength**: Minimum mechanical strength with maximum workability **5. Product Applications** 1145-O is primarily supplied as foil, sheet, and strip for demanding forming applications. * **Packaging Industry**: Food packaging foil, container stock, and laminated materials * **Electrical Components**: Transformer windings, capacitor foils, and flexible conductors * **Deep Drawing Products**: Complex-shaped containers and precision components * **Heat Exchangers**: Fins and heat transfer components * **Chemical Equipment**: Lining materials and corrosion-resistant containers * **Decorative Applications**: Decorative trim and architectural elements * **General Manufacturing**: Prototypes and complex-shaped components **6. International Standards** 1145-O is recognized under major international standardization systems. | Standard System | Designation | |-----------------|-------------| | **ISO** | Al99.45 O | | **EN (Europe)** | EN AW-1145 O | | **ASTM (USA)** | ASTM B479 1145 O | | **UNS (USA)** | UNS A91145 O | | **JIS (Japan)** | A1145 O | | **GB (China)** | 1145 O | --- **Summary** **1145-O Aluminum Alloy** represents a **high-purity aluminum grade in the fully annealed condition**, offering **exceptional formability and good electrical conductivity**. With its high aluminum content (99.45% minimum) and optimized impurity control, this alloy provides excellent workability for demanding forming operations while maintaining good electrical and thermal performance. The O temper condition makes 1145-O particularly valuable for applications requiring severe deformation and complex shapes, such as packaging materials, electrical components, and deep-drawn products. Its combination of good formability, adequate conductivity, and excellent surface quality establishes 1145-O as a reliable material choice for various industrial applications, especially in the packaging and electrical industries where material purity and formability are essential requirements.

Packing of Standard Packing: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 1455 gallon liquid totes Special package is available on request.