6019 Aluminum alloy,Aluminum 6019 alloy,E FORU

### **Product Introduction: 6019 Aluminum Alloy** **6019 Aluminum Alloy** is a heat-treatable aluminum-magnesium-silicon (Al-Mg-Si) alloy specifically developed for automotive body sheet applications, particularly for outer body panels. It offers an excellent combination of good formability, superior surface quality, and adequate bake-hardening response, making it suitable for automotive applications requiring both aesthetic appeal and structural performance. --- ### **1. International Standards** 6019 Aluminum Alloy is recognized under the following international standards: - **AA (Aluminum Association, USA):** AA 6019 - **UNS (Unified Numbering System):** UNS A96019 - **ISO (International Organization for Standardization):** AlMg0.5Si - **ASTM:** ASTM B209 (Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate) --- ### **2. Chemical Composition** The chemical composition limits (in weight percentage) are specified as follows: | Element | Content (%) | |:---------|:------------| | **Aluminum (Al)** | Balance | | **Silicon (Si)** | 0.80 - 1.3 | | **Magnesium (Mg)** | 0.45 - 0.9 | | **Manganese (Mn)** | 0.10 - 0.5 | | **Copper (Cu)** | 0.05 - 0.20 | | **Iron (Fe)** | ≤ 0.35 | | **Chromium (Cr)** | ≤ 0.15 | | **Zinc (Zn)** | ≤ 0.10 | | **Titanium (Ti)** | ≤ 0.08 | | **Others (each)** | ≤ 0.05 | | **Others (total)** | ≤ 0.15 | **Key Takeaway:** The optimized silicon and magnesium ratio provides good age-hardening response, while the controlled copper content ensures excellent corrosion resistance. The manganese content enhances strength without significantly compromising formability. --- ### **3. Physical Properties** The typical physical properties of 6019 aluminum alloy are: | Property | Metric Value | Imperial Value | |:----------|:-------------|:---------------| | **Density** | 2.70 g/cm³ | 0.0975 lb/in³ | | **Melting Range** | 600 - 650 °C | 1112 - 1202 °F | | **Coefficient of Thermal Expansion** | 23.4 × 10⁻⁶/°C (20-100°C) | 13.0 × 10⁻⁶/°F (68-212°F) | | **Thermal Conductivity** | 165 - 185 W/m·K | 955 - 1070 BTU·in/(hr·ft²·°F) | | **Electrical Conductivity** | 44-48% IACS | 44-48% IACS | | **Modulus of Elasticity** | 69 GPa | 10,000 ksi | | **Shear Modulus** | 26 GPa | 3,770 ksi | --- ### **4. Mechanical Properties** Mechanical properties are balanced for automotive manufacturing requirements: **Temper: T4** (Solution heat-treated and naturally aged) - **Tensile Strength:** 190 - 240 MPa (28 - 35 ksi) - **Yield Strength (0.2% Offset):** 100 - 150 MPa (15 - 22 ksi) - **Elongation (% in 50mm):** 20-26% - **Strain-Hardening Exponent (n-value):** 0.21 - 0.25 - **Plastic Strain Ratio (r-value):** 0.60 - 0.75 **After Paint-Bake Cycle** (185°C/365°F for 20-30 minutes): - **Yield Strength Increase:** 70 - 110 MPa (10 - 16 ksi) - **Final Yield Strength:** 170 - 260 MPa (25 - 38 ksi) - **Final Tensile Strength:** 240 - 310 MPa (35 - 45 ksi) --- ### **5. Product Applications** 6019 Aluminum Alloy is primarily used in automotive body panel applications: - **Automotive Outer Body Panels:** - Door outer panels - Hood outer panels - Fender panels - Quarter panels - Roof panels - **Automotive Applications:** - Body side panels - Trunk lids - Various exterior body components - Non-structural body parts - **Specific Use Cases:** - Applications requiring good surface quality - Components with moderate strength requirements - Parts where formability and appearance are important - Automotive exterior panels --- ### **6. Key Characteristics & Advantages** - **Good Formability:** Offers excellent deep-drawing and stretch-forming capabilities, allowing for manufacturing of complex automotive panels with reasonable risk of splitting. - **Superior Surface Quality:** Excellent surface characteristics with minimal roping or streaking, making it suitable for Class A automotive body panels. - **Adequate Bake-Hardening Response:** Provides sufficient strength increase during automotive paint-bake cycles to meet dent resistance requirements for outer body panels. - **Excellent Corrosion Resistance:** The low copper content ensures good resistance to atmospheric corrosion, suitable for automotive exterior applications. - **Good Hemming Performance:** Reliable edge-hemming characteristics suitable for closure panel assemblies. - **Consistent Performance:** Predictable behavior in automotive manufacturing environments. - **Weight Reduction:** Enables significant mass reduction while maintaining required performance characteristics. --- ### **7. Processing Characteristics** **Heat Treatment Parameters:** - Solution Heat Treatment: 530-550°C (985-1020°F) - Quenching: Controlled cooling to room temperature - Natural Aging: Properties stabilize within 24-72 hours - Paint-Bake Response: Effective at standard automotive curing temperatures **Forming Characteristics:** - Good deep-drawing capability with drawing ratios up to 2.2 - Moderate springback characteristics - Suitable for most automotive stamping operations - Compatible with standard automotive forming lubricants **Surface Treatment:** - Excellent paint adhesion characteristics - Suitable for automotive pre-treatment processes - Good performance with E-coat systems - Maintains surface quality through painting process --- ### **8. Comparative Analysis** **vs. 6016 Alloy:** - Similar formability characteristics - Comparable surface quality - Slightly different chemical composition - Similar automotive applications **vs. 6111 Alloy:** - Better formability - Superior surface quality - Lower strength but more consistent in production - More suitable for complex panel geometries **vs. 6022 Alloy:** - Better surface characteristics - Enhanced formability - More forgiving in severe forming operations - Similar corrosion performance --- ### **9. Automotive Manufacturing** **Production Efficiency:** - Good compatibility with automated production lines - Reasonable scrap rates in controlled processes - Acceptable tooling wear characteristics - Suitable for high-volume manufacturing **Quality Performance:** - Meets automotive OEM requirements for body panels - Consistent mechanical properties - Predictable aging behavior - Reliable in standard automotive production --- ### **10. Economic Benefits** **Cost Advantages:** - Competitive material pricing - Good balance of performance and cost - Suitable for various vehicle programs - Efficient material utilization **Production Economics:** - Reduced tooling costs due to good formability - Acceptable rejection rates - Good compatibility with existing production infrastructure - Lower overall manufacturing costs --- ### **Summary** **6019 Aluminum Alloy** represents a well-balanced automotive body sheet material that delivers reliable performance for automotive body panel applications. It offers a good combination of formability, surface quality, and bake-hardening response at a competitive cost point. Its consistent performance and good manufacturing characteristics make it a practical choice for automotive manufacturers seeking to achieve weight reduction targets while maintaining cost efficiency and aesthetic quality in exterior body panels. The alloy is particularly suited for applications where good formability and excellent surface quality are key requirements, making it a valuable option in the automotive lightweighting material portfolio.

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 1965 gallon liquid totes Special package is available on request.