1201 Alloy,forged rolled circle，E FORU

### **Product Datasheet: 1201 Aluminum Alloy Forged Rolled Ring** **1. General Overview** 1201 Aluminum Alloy Forged Rolled Rings are high-integrity components manufactured from commercially pure aluminum (≥99.00% Al) through the forging and ring rolling process. This specialized manufacturing method refines the metallic grain structure, resulting in a ring product with superior mechanical properties, enhanced grain flow continuity, and excellent structural reliability compared to cast products. 1201 alloy is specifically chosen for its exceptional electrical conductivity, outstanding corrosion resistance, and good formability, making these rings ideal for critical electrical and corrosive service applications. **2. International Standards** The 1201 alloy and its forged products are recognized under several key international standards. * **Aluminum Association (AA):** AA 1201 * **ASTM:** ASTM B247 (Standard Specification for Aluminum and Aluminum-Alloy Die Forgings, Hand Forgings, and Rolled Ring Forgings) * **ISO:** Al99.0 (ISO 209) * **EN (European Standard):** EN AW-1200 [Al99.0] * **UNS:** UNS A91201 **3. Chemical Composition (Weight %)** The composition is characterized by a very high aluminum content and strict limits on impurities to maximize electrical conductivity. | Element | Content (%) | | :--- | :--- | | **Aluminum (Al)** | ≥ 99.00 (Balance) | | **Iron (Fe)** | ≤ 0.70 | | **Silicon (Si)** | ≤ 0.50 | | **Copper (Cu)** | ≤ 0.10 | | **Zinc (Zn)** | ≤ 0.10 | | **Manganese (Mn)** | ≤ 0.10 | | **Other Elements** | ≤ 0.15 each; ≤ 0.05 total | *Note: The low levels of alloying elements, especially the (Fe+Si) content, are critical for achieving high electrical conductivity.* **4. Physical Properties** The physical properties are typical of commercially pure aluminum, with high conductivity being a standout feature. | Property | Value / Description | | :--- | :--- | | **Density** | 2.71 g/cm³ (0.098 lb/in³) | | **Melting Range** | ~ 655 °C (1211 °F) | | **Coefficient of Thermal Expansion (20-100°C)** | 23.6 x 10⁻⁶/°C | | **Thermal Conductivity** | ~ 222 W/m·K | | **Electrical Conductivity** | ~ 59-62% IACS (International Annealed Copper Standard) | | **Modulus of Elasticity** | 70 GPa (10.2 x 10⁶ psi) | **5. Mechanical Properties (Typical for As-Forged / O Temper)** The mechanical properties of forged rolled rings are superior to those of cast or hot-rolled sheet products due to the wrought microstructure. They are typically supplied in the as-forged (F) or annealed (O) condition. | Property | Typical Value (As-Forged / O Temper) | | :--- | :--- | | **Tensile Strength** | 95 - 125 MPa (14,000 - 18,000 psi) | | **Yield Strength (0.2% Offset)** | 35 - 70 MPa (5,000 - 10,000 psi) | | **Elongation at Break** | 25 - 40 % (in 50 mm / 2 inches) | | **Hardness, Brinell** | ~ 25 - 35 HB | *Note: The specific mechanical properties can be influenced by the final forging reduction ratio and heat treatment.* **6. Key Characteristics & Advantages** * **Superior Grain Structure:** The forged and rolled process produces a fine, uniform grain structure with continuous grain flow that follows the ring's contour, significantly enhancing ductility and fatigue resistance. * **Excellent Electrical Conductivity:** Its primary advantage, making it the material of choice for rotating electrical components and high-current conductors. * **Outstanding Corrosion Resistance:** The high purity gives it excellent resistance to atmospheric and chemical corrosion, similar to pure aluminum. * **High Pressure Tightness:** The wrought structure is inherently free from porosity, making it suitable for applications requiring a pressure-tight seal. * **Good Machinability:** It can be easily machined to precise tolerances, achieving good surface finishes. * **Non-magnetic and Non-sparking:** A critical safety feature for applications in sensitive electronic or hazardous (explosive) environments. **7. Product Applications** 1201 Aluminum Forged Rolled Rings are utilized in demanding applications where their conductive properties, corrosion resistance, and structural integrity are paramount. * **Electrical Engineering:** * Rotor and end rings for large electric motors and generators. * High-current conducting rings and busbar supports. * **Aerospace & Defense:** * Non-magnetic structural rings for avionics and electronic systems. * Corrosion-resistant housings and mounts. * **General Engineering & Chemical Processing:** * Base plates and flanges for chemical processing equipment. * Lightweight, corrosion-resistant rings for piping systems and vessels. * **Semiconductor Manufacturing:** * Components for etching chambers where high purity and corrosion resistance are required. **8. Available Specifications & Processing** * **Primary Form:** Forged and Rolled Ring (Circular or custom shapes). * **Common Tempers:** F (As-Forged), O (Annealed). * **Typical Dimensions:** Wide range of diameters (from a few inches to over several feet), wall thicknesses, and heights. * **Fabrication:** Excellent for subsequent machining, welding, and bending operations. --- **Disclaimer:** The information provided is typical and intended for reference purposes. Mechanical properties can vary based on the specific forging practice, ring size, and final heat treatment. For critical applications, it is essential to consult with the manufacturer for certified test reports and property verification.

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 2275 gallon liquid totes Special package is available on request.