2028C Aluminum alloy,Aluminum 2028C alloy,E FORU

### **Aluminum 2028C Alloy Product Introduction** **Overview** 2028C Aluminum Alloy is a third-generation free-machining aluminum-copper alloy that represents the latest advancement in the 2028 series. This alloy features further refined composition controls and enhanced manufacturing consistency, providing exceptional machining characteristics while maintaining improved mechanical properties for high-precision applications in demanding industries. --- #### **1. Chemical Composition** | Element | Content (%) | |---------|-------------| | **Aluminum (Al)** | Balance | | **Copper (Cu)** | 3.4 - 4.4 | | **Silicon (Si)** | 1.1 - 1.8 | | **Iron (Fe)** | ≤ 0.4 | | **Manganese (Mn)** | 0.35 - 0.9 | | **Magnesium (Mg)** | 0.55 - 1.1 | | **Zinc (Zn)** | ≤ 0.2 | | **Lead (Pb)** | 1.1 - 1.8 | | **Bismuth (Bi)** | 0.7 - 1.1 | | **Tin (Sn)** | 0.15 - 0.30 | | **Chromium (Cr)** | 0.05 - 0.15 | | **Other Elements** | ≤ 0.10 total | --- #### **2. Physical Properties** | Property | Value / Description | |----------|---------------------| | **Density** | 2.90 g/cm³ (0.105 lb/in³) | | **Melting Range** | 525°C - 648°C (977°F - 1198°F) | | **Electrical Conductivity** | 38-43% IACS | | **Thermal Conductivity** | 142-152 W/m·K | | **Coefficient of Thermal Expansion** | 23.9 × 10⁻⁶/°C (20-100°C) | | **Modulus of Elasticity** | 71.5 GPa (10,370 ksi) | | **Poisson's Ratio** | 0.33 | | **Specific Heat Capacity** | 900 J/kg·K | --- #### **3. Mechanical Properties** **Typical Mechanical Properties (T6 Temper):** | Property | Value | |----------|-------| | **Tensile Strength** | 370-430 MPa (54-62 ksi) | | **Yield Strength (0.2% Offset)** | 280-340 MPa (41-49 ksi) | | **Elongation in 2 inches** | 11-16% | | **Shear Strength** | 230-270 MPa (33-39 ksi) | | **Fatigue Strength** | 130 MPa (19 ksi) | | **Brinell Hardness** | 110-120 HB | | **Machinability Rating** | Exceptional (100% of free-cutting brass) | --- #### **4. International Standards** | Standard System | Designation | Product Form | |-----------------|-------------|--------------| | **ASTM** | ASTM B211 | Rod, Bar, Wire | | **EN** | EN AW-2028C | Extruded Products | | **UNS** | A92028 | - | | **JIS** | A2028C | Bar, Rod, Wire | | **ISO** | ISO 6361-2 | Wrought Products | --- #### **5. Product Applications** **Advanced Automotive Systems:** - High-pressure fuel system components - Dual-clutch transmission parts - Turbocharger components - Advanced driver-assistance systems - Electric vehicle power components **Aerospace and Defense Systems:** - Flight control mechanism parts - Satellite component housings - Radar system components - Navigation equipment parts - Military communication devices **Medical Equipment:** - Surgical instrument components - Medical imaging system parts - Dental equipment components - Diagnostic device mechanisms - Laboratory automation parts **High-Precision Industrial:** - Industrial robot components - Precision measuring instruments - Semiconductor manufacturing parts - Optical alignment systems - High-speed automation equipment --- #### **6. Key Advantages & Considerations** **Advantages:** - ✅ **Unmatched Machinability** - industry-leading performance - ✅ **Enhanced Strength Properties** - ✅ **Superior Thermal Stability** - ✅ **Excellent Surface Quality** - mirror finishes achievable - ✅ **Extended Tool Life** - up to 30% improvement - ✅ **Consistent Batch-to-Batch Performance** **Considerations:** - ⚠️ **Stringent Environmental Regulations Apply** - ⚠️ **Specialized Recycling Requirements** - ⚠️ **Limited High-Temperature Capability** (max 150°C) - ⚠️ **Premium Material Cost** - ⚠️ **Requires Certified Supply Chain** --- **Heat Treatment Specifications** **Available Tempers:** - O: Full annealed condition - T4: Solution heat-treated, naturally aged - T6: Solution heat-treated, artificially aged (optimal) - T651: Stress-relieved version for stability **Advanced T6 Heat Treatment:** - Solution Treatment: 510-520°C (950-968°F) - Quenching: Precision controlled water quench - Artificial Aging: 160-170°C (320-338°F) for 6-10 hours - Cooling: Controlled atmosphere cooling --- **Machining Performance** **Optimal Machining Parameters:** - Cutting Speed: 300-400 m/min - Feed Rate: 0.15-0.25 mm/rev - Depth of Cut: Up to 5 mm - Surface Finish: Ra 0.2-0.8 μm achievable - Chip Characteristics: Perfect 6-8 type chips **Advanced Tooling Recommendations:** - Primary: Nano-coated carbide tools - High-Speed: PCD tools for production runs - Coolant: Synthetic coolants with extreme pressure additives - Tool Life: 40-50% longer than standard alloys --- **Quality Assurance and Certification** **Stringent Quality Controls:** - Statistical process control implementation - Lot traceability requirements - Microcleanliness standards - Grain structure controls - Dimensional stability assurance **Certification Requirements:** - Chemical composition certification - Mechanical property verification - Machinability performance certification - Microstructural analysis reports - Surface quality validation certificates --- **Environmental and Regulatory Compliance** **Global Compliance Status:** - RoHS: Exemption required - REACH: Full registration - Conflict Minerals: Compliant - ISO 14001: Certified manufacturers - End-of-Life: Specialized recycling protocols **Alternative Solutions:** - 6028C for lead-free requirements - 6262 for general purpose applications - Custom alloys for specific compliance needs --- **Conclusion** 2028C Aluminum Alloy represents the cutting edge of free-machining aluminum technology, delivering unparalleled performance for the most demanding precision manufacturing applications. With its optimized chemical composition and advanced processing controls, this alloy sets new standards for machining efficiency, surface quality, and production consistency. While requiring careful consideration of environmental regulations and commanding a premium price, 2028C provides exceptional value in applications where manufacturing efficiency, component precision, and reliable performance are critical. The alloy's advanced characteristics make it the material of choice for next-generation automotive, aerospace, medical, and high-tech industrial applications, establishing a new benchmark for precision machining materials in the 21st century.

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 1557 gallon liquid totes Special package is available on request.