6116 Aluminum alloy,Aluminum 6116 alloy,E FORU

### **Aluminum 6116 Alloy: Product Introduction** **Overview** Aluminum 6116 is a heat-treatable aluminum-magnesium-silicon alloy specifically developed for **automotive body sheet applications**. This alloy is designed to provide an excellent combination of **high strength after paint baking**, **good formability**, and **superior surface quality**, making it particularly suitable for automotive outer body panels where both structural performance and aesthetic appearance are critical requirements. --- #### **1. Chemical Composition (Weight %)** | Element | Minimum (%) | Maximum (%) | |---------|-------------|-------------| | Silicon (Si) | 0.7 | 1.3 | | Iron (Fe) | - | 0.40 | | Copper (Cu) | 0.10 | 0.25 | | Manganese (Mn) | 0.10 | 0.20 | | Magnesium (Mg) | 0.6 | 1.1 | | Chromium (Cr) | - | 0.10 | | Zinc (Zn) | - | 0.10 | | Titanium (Ti) | - | 0.10 | | Other (Each) | - | 0.05 | | Other (Total) | - | 0.15 | | **Aluminum (Al)** | **Balance** | | --- #### **2. Physical Properties** | Property | Metric Value | Imperial Value | |----------|--------------|----------------| | **Density** | 2.70 g/cm³ | 0.0975 lb/in³ | | **Melting Range** | 560-640 °C | 1040-1184 °F | | **Electrical Conductivity** | 44-48% IACS | 44-48% IACS | | **Thermal Conductivity** | 165-180 W/m·K | 957-1045 BTU·in/(hr·ft²·°F) | | **Coefficient of Thermal Expansion** | 23.6 × 10⁻⁶/°C | 13.1 × 10⁻⁶/°F | | **Modulus of Elasticity** | 69.0 GPa | 10,007 ksi | --- #### **3. Mechanical Properties** **Typical Mechanical Properties by Temper:** | Property | T4 Temper | T4P Temper | After Paint Bake | |----------|-----------|------------|------------------| | **Tensile Strength** | 220-260 MPa | 190-230 MPa | 280-320 MPa | | **Yield Strength (0.2% Offset)** | 110-140 MPa | 90-120 MPa | 220-260 MPa | | **Elongation (in 50mm)** | 24-28% | 26-30% | 14-18% | | **Hardness (Brinell)** | 65-75 HB | 55-65 HB | 85-95 HB | | **n-value (Strain Hardening Exponent)** | 0.22-0.26 | 0.24-0.28 | - | | **r-value (Plastic Strain Ratio)** | 0.65-0.75 | 0.70-0.80 | - | --- #### **4. International Standards** * **ASTM Standards:** * ASTM B209: Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate * ASTM B928: Standard Specification for High Magnesium Aluminum-Alloy Sheet and Plate for Marine Service * **European Standards (EN):** * EN 573-3: Chemical composition (Designation: EN AW-6116) * EN 485-2: Mechanical properties * **ISO Standards:** * ISO 6361-2: Wrought aluminum and aluminum alloy sheets, strips and plates * ISO 7771: Aluminum and aluminum alloys - Sheet, strip and plate * **Japanese Standards:** * JIS H4000: Aluminum and aluminum alloy sheets and plates * JIS H4080: Aluminum and aluminum alloy sheets and strips for automobiles --- #### **5. Product Applications** **Automotive Body Panels:** - Outer body panels (doors, hoods, fenders) - Roof panels and quarter panels - Deck lids and liftgates - Body side outer panels **Automotive Applications:** - Body-in-white components - Structural reinforcements - Closure panels - Automotive exterior trim **Transportation Industry:** - Commercial vehicle body panels - Bus exterior components - Railway vehicle body panels - Special vehicle components **Special Applications:** - Class-A surface components - High-quality painted parts - Architectural panels - Premium consumer products --- #### **6. Key Characteristics & Advantages** * **Excellent Bake Hardening Response:** Significant strength increase after paint baking cycle * **Superior Formability:** High elongation for complex stamping operations * **Exceptional Surface Quality:** Ideal for Class-A automotive surfaces * **Good Hemming Performance:** Excellent for edge hemming operations * **High Strength-to-Weight Ratio:** Weight reduction potential * **Good Corrosion Resistance:** Suitable for automotive environments * **Weldability:** Compatible with automotive welding processes --- #### **7. Heat Treatment Characteristics** **Solution Heat Treatment:** - Temperature: 545-555°C (1013-1031°F) - Time: Rapid heating and short holding times - Quenching: Rapid cooling required **Paint Bake Cycle Response:** - Typical bake cycle: 175-190°C (347-374°F) for 20-30 minutes - Strength increase: 70-110 MPa yield strength improvement - Final properties achieved after painting process --- #### **8. Processing and Fabrication** **Stamping Characteristics:** - Excellent deep drawing capability - Good stretch formability - Controlled springback characteristics - Suitable for complex geometries **Surface Treatment Compatibility:** - Excellent phosphating response - Good electrocoating performance - Superior paint adhesion - Suitable for various coating systems **Joining Methods:** - Resistance spot welding compatible - MIG and TIG welding applicable - Adhesive bonding suitable - Mechanical fastening possible **Hemming Performance:** - Excellent for tight radius hems - Good for flat hems - Minimal edge cracking - Consistent performance --- #### **9. Quality Assurance** **Testing Requirements:** - Mechanical property testing - Formability testing (n-value, r-value) - Surface quality inspection - Bake hardening response verification - Corrosion testing **Automotive Standards:** - Meets automotive OEM specifications - Surface quality standards compliance - Dimensional stability requirements - Batch-to-batch consistency --- **Technical Note:** Aluminum 6116 is specifically engineered for automotive body sheet applications, offering an optimal balance between formability in the T4 temper and high strength after the paint bake cycle. The alloy's chemical composition is carefully balanced to provide excellent age-hardening response during the paint curing process, resulting in significant strength improvement while maintaining superior surface quality for Class-A automotive panels. This combination makes 6116 particularly valuable for automotive applications where complex forming requirements must be met during manufacturing, and high dent resistance is needed in service. The alloy's consistent performance and excellent manufacturing characteristics have made it a preferred choice for modern automotive body panel applications.

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 2046 gallon liquid totes Special package is available on request.