7004 Aluminum alloy,Aluminum 7004 alloy，E FORU

### **Aluminum 7004 Alloy (EN AW-7004) - Product Introduction** **Aluminum 7004** is a medium-to-high strength, heat-treatable aluminum-zinc-magnesium alloy designed for excellent extrudability and good mechanical properties. This alloy is part of the 7xxx series and offers a balanced combination of strength, weldability, and corrosion resistance, making it suitable for various structural and transportation applications. --- #### **1. Chemical Composition** The chemical composition is optimized for good strength and manufacturing characteristics: | Element | Content (%) (Typical) | Standard Range (EN 573-3) | |---|---|---| | **Aluminum (Al)** | Balance | Balance | | **Zinc (Zn)** | 4.5 - 5.5 | 4.5 - 5.5 | | **Magnesium (Mg)** | 1.0 - 1.8 | 1.0 - 1.8 | | **Manganese (Mn)** | 0.20 - 0.50 | 0.20 - 0.50 | | **Chromium (Cr)** | 0.10 - 0.25 | 0.10 - 0.25 | | **Copper (Cu)** | ≤ 0.15 | ≤ 0.15 | | **Iron (Fe)** | ≤ 0.30 | ≤ 0.30 | | **Silicon (Si)** | ≤ 0.25 | ≤ 0.25 | | **Titanium (Ti)** | ≤ 0.05 | ≤ 0.05 | | **Others (Each)** | ≤ 0.05 | ≤ 0.05 | | **Others (Total)** | ≤ 0.15 | ≤ 0.15 | --- #### **2. Physical Properties** Aluminum 7004 exhibits good physical properties for structural applications: | Property | Metric Value | Imperial Value | |---|---|---| | **Density** | 2.77 g/cm³ | 0.100 lb/in³ | | **Melting Range** | 475 - 635 °C | 887 - 1175 °F | | **Electrical Conductivity** | 38-42 % IACS (T6 Temper) | 38-42 % IACS | | **Thermal Conductivity** | 155-170 W/m·K | 1075-1180 BTU·in/(hr·ft²·°F) | | **Coefficient of Thermal Expansion** | 23.7 × 10⁻⁶/K | 13.2 × 10⁻⁶/°F | | **Modulus of Elasticity** | 70 GPa | 10,150 ksi | | **Shear Modulus** | 26.5 GPa | 3,840 ksi | --- #### **3. Mechanical Properties** Typical mechanical properties for common tempers: | Temper | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HB) | |---|---|---|---|---| | **T4** | 270-310 | 150-190 | 15-19 | 75-85 | | **T5** | 300-340 | 240-280 | 12-16 | 90-100 | | **T6** | 330-370 | 280-320 | 10-14 | 100-110 | | **T53** | 310-350 | 260-300 | 11-15 | 95-105 | --- #### **4. International Standards** Aluminum 7004 complies with the following international standards: * **European Standard (EN):** **EN AW-7004** (Material Number 3.3196) * **ISO:** **AlZn5Mg2** under ISO 209 * **JIS:** **JIS H 4040** (A7004) * **EN 755:** Aluminum and aluminum alloy extruded rod/bar, tube and profiles * **EN 13957:** Aluminum and aluminum alloys - Extruded round, coiled and drawn wire * **ASTM:** Related specifications in **ASTM B221** for general extrusion applications * **GB/T:** **GB/T 3190** (Chinese National Standard) --- #### **5. Product Applications** Aluminum 7004 is used in various structural and general engineering applications: * **Transportation Components:** Railway vehicle structures, truck frames * **Bicycle Frames:** Medium-to-high performance bicycle components * **Architectural Structures:** Building frameworks, structural supports * **Marine Applications:** Boat components, marine structures * **Sports Equipment:** Sports gear frames and components * **Industrial Machinery:** Equipment frames, structural members * **Automotive Parts:** Vehicle structural components * **General Engineering:** Various structural applications --- #### **6. Key Advantages & Characteristics** * **Good Strength-to-Weight Ratio:** Favorable mechanical properties for weight-sensitive applications * **Excellent Extrudability:** Can be extruded into complex profiles * **Good Weldability:** Suitable for welded structures * **Corrosion Resistance:** Adequate resistance for most environmental conditions * **Fatigue Performance:** Good resistance to cyclic loading * **Heat Treatable:** Good response to artificial aging treatments * **Machinability:** Good machining characteristics in aged tempers * **Formability:** Suitable for various forming operations **Heat Treatment Characteristics:** - Solution treatment temperature: 465-480°C (870-900°F) - Artificial aging temperature: 120-140°C (250-285°F) - Good response to precipitation hardening - Stable mechanical properties after proper aging **Manufacturing Characteristics:** - Good for extrusion of complex sections - Suitable for various fabrication methods - Can be welded using conventional techniques - Good surface quality for finishing operations **Performance Features:** - Balanced combination of strength and toughness - Good performance in structural applications - Suitable for medium-stress applications - Reliable service in various environments --- **Quality Assurance:** - Consistent mechanical properties - Controlled chemical composition - Reliable performance in structural applications - Compliance with international standards **Conclusion:** Aluminum 7004 offers a well-balanced combination of medium-to-high strength, good extrudability, and adequate corrosion resistance, making it a versatile choice for various structural and transportation applications. Its balanced properties and good manufacturing characteristics make it particularly suitable for applications requiring a combination of strength, formability, and weldability. The alloy's reliable performance and compliance with international standards ensure its continued use in quality structural components across multiple industries.

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 2099 gallon liquid totes Special package is available on request.