7003 Aluminum alloy,Aluminum 7003 alloy，E FORU

### **Aluminum 7003 Alloy (EN AW-7003) - Product Introduction** **Aluminum 7003** is a heat-treatable aluminum-zinc-magnesium alloy known for its high strength, excellent weldability, and good stress corrosion resistance. As part of the 7xxx series aluminum alloys, it offers a favorable combination of mechanical properties and manufacturing characteristics, making it particularly suitable for welded structures and transportation applications. --- #### **1. Chemical Composition** The chemical composition is balanced for optimal strength and weldability: | Element | Content (%) (Typical) | Standard Range (EN 573-3) | |---|---|---| | **Aluminum (Al)** | Balance | Balance | | **Zinc (Zn)** | 5.0 - 6.5 | 5.0 - 6.5 | | **Magnesium (Mg)** | 1.0 - 1.8 | 1.0 - 1.8 | | **Manganese (Mn)** | 0.10 - 0.40 | 0.10 - 0.40 | | **Chromium (Cr)** | 0.05 - 0.20 | 0.05 - 0.20 | | **Zirconium (Zr)** | 0.05 - 0.15 | 0.05 - 0.15 | | **Copper (Cu)** | ≤ 0.20 | ≤ 0.20 | | **Iron (Fe)** | ≤ 0.25 | ≤ 0.25 | | **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 7003 exhibits excellent physical properties for structural applications: | Property | Metric Value | Imperial Value | |---|---|---| | **Density** | 2.78 g/cm³ | 0.100 lb/in³ | | **Melting Range** | 475 - 635 °C | 887 - 1175 °F | | **Electrical Conductivity** | 36-40 % IACS (T6 Temper) | 36-40 % IACS | | **Thermal Conductivity** | 150-165 W/m·K | 1040-1145 BTU·in/(hr·ft²·°F) | | **Coefficient of Thermal Expansion** | 23.8 × 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** | 290-330 | 170-210 | 16-20 | 80-90 | | **T5** | 320-360 | 260-300 | 12-16 | 95-105 | | **T6** | 350-390 | 300-340 | 10-14 | 105-115 | | **T53** | 330-370 | 280-320 | 11-15 | 100-110 | --- #### **4. International Standards** Aluminum 7003 complies with the following international standards: * **European Standard (EN):** **EN AW-7003** (Material Number 3.3195) * **ISO:** **AlZn5Mg1** under ISO 209 * **JIS:** **JIS H 4040** (A7003) * **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 7003 is widely used in structural and transportation applications: * **Transportation Vehicles:** Railway car body structures, truck frames * **Bicycle Frames:** High-performance bicycle components * **Marine Structures:** Boat frames, marine components * **Architectural Structures:** Building frameworks, structural supports * **Sports Equipment:** Baseball bats, tennis racket frames * **Automotive Components:** Vehicle structural members * **Welded Structures:** Fabricated structures requiring high strength * **Industrial Equipment:** Machinery frames, structural components --- #### **6. Key Advantages & Characteristics** * **High Strength:** Excellent mechanical properties for structural applications * **Good Weldability:** Superior welding characteristics among 7xxx series alloys * **Stress Corrosion Resistance:** Good resistance to stress corrosion cracking * **Extrudability:** Good for manufacturing complex profiles * **Fatigue Resistance:** Excellent performance under cyclic loading * **Fracture Toughness:** Good damage tolerance characteristics * **Heat Treatable:** Excellent response to artificial aging * **Weight Savings:** High strength-to-weight ratio **Heat Treatment Characteristics:** - Solution treatment temperature: 465-480°C (870-900°F) - Artificial aging temperature: 120-140°C (250-285°F) - Good response to both single and double aging treatments - Stable mechanical properties after aging **Welding Performance:** - Excellent weldability using conventional methods - Minimal strength loss in weld-affected zones - Can be welded without post-weld heat treatment - Good performance in welded structures **Corrosion Performance:** - Good resistance to stress corrosion cracking - Adequate general corrosion resistance - Suitable for various environmental conditions - Can be used with protective coatings if needed --- **Quality Assurance:** - Consistent mechanical properties - Good chemical composition control - Reliable performance in structural applications - Compliance with international standards **Conclusion:** Aluminum 7003 offers an excellent balance of high strength, good weldability, and adequate corrosion resistance, making it particularly valuable for transportation and structural applications. Its superior welding characteristics compared to other 7xxx series alloys, combined with good mechanical properties, position it as a preferred choice for fabricated structures and weight-sensitive applications. The alloy's combination of performance characteristics and manufacturing flexibility ensures reliable service in demanding applications across various 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 2098 gallon liquid totes Special package is available on request.