6004 Aluminum alloy,Aluminum 6004 alloy,E FORU

### **Product Introduction: 6004 Aluminum Alloy** **6004 Aluminum Alloy** is a heat-treatable alloy within the aluminum-magnesium-silicon (Al-Mg-Si) system. It is specifically designed to offer a combination of good strength, excellent corrosion resistance, and superior formability. While similar to the more common 6003 and 6061 alloys, 6004 is often selected for applications requiring a favorable balance of mechanical properties and deep-drawing or bending capabilities, particularly in the automotive and transportation sectors. --- ### **1. International Standards** 6004 Aluminum Alloy is specified under the following international standards: * **AA (Aluminum Association, USA):** AA 6004 * **UNS (Unified Numbering System):** UNS A96004 * **ISO (International Organization for Standardization):** AlMg0.7Si * **EN (European Norm):** EN AW-6004 --- ### **2. Chemical Composition** The chemical composition limits (in weight percentage) as per the AA standard are detailed below. | Element | Content (%) | | :--- | :--- | | **Aluminum (Al)** | Balance | | **Silicon (Si)** | 0.20 - 0.7 | | **Magnesium (Mg)** | 0.40 - 0.9 | | **Manganese (Mn)** | 0.10 - 0.6 | | **Copper (Cu)** | ≤ 0.25 | | **Iron (Fe)** | ≤ 0.35 | | **Chromium (Cr)** | ≤ 0.20 | | **Zinc (Zn)** | ≤ 0.20 | | **Titanium (Ti)** | ≤ 0.10 | | **Others (each)** | ≤ 0.05 | | **Others (total)** | ≤ 0.15 | **Key Takeaway:** The balanced Mg and Si content allows for the formation of Magnesium Silicide (Mg₂Si) during heat treatment, which provides strength. The controlled manganese (Mn) content enhances strength and grain structure control. --- ### **3. Physical Properties** The typical physical properties of 6004 aluminum alloy are listed in the table below. | Property | Metric Value | Imperial Value | | :--- | :--- | :--- | | **Density** | 2.70 g/cm³ | 0.0975 lb/in³ | | **Melting Range** | ~ 615 - 655 °C | ~ 1140 - 1210 °F | | **Coefficient of Thermal Expansion** | 23.4 x 10⁻⁶/°C (20-100°C) | 13.0 x 10⁻⁶/°F (68-212°F) | | **Thermal Conductivity** | 170 - 190 W/m·K | 985 - 1100 BTU·in/(hr·ft²·°F) | | **Electrical Conductivity** | ~ 45-50% IACS | ~ 45-50% IACS | | **Modulus of Elasticity** | 69 GPa | 10,000 ksi | --- ### **4. Mechanical Properties** Mechanical properties are dependent on the temper condition. The following are typical values for sheet or plate. **Temper: O (Annealed)** * **Tensile Strength:** 130 - 170 MPa (19 - 25 ksi) * **Yield Strength (0.2% Offset):** ≤ 70 MPa (≤ 10 ksi) * **Elongation (% in 50mm):** 20% min **Temper: T6 (Solution heat-treated and artificially aged)** * **Tensile Strength:** 220 - 260 MPa (32 - 38 ksi) * **Yield Strength (0.2% Offset):** 190 - 230 MPa (28 - 33 ksi) * **Elongation (% in 50mm):** 10% min --- ### **5. Product Applications** 6004 alloy is versatile and used in various forms, including sheet, plate, and extrusions. Its primary applications are in: * **Automotive Industry:** * Body panels and inner structural components * Seat frames and mechanisms * Bumper reinforcements * Wheel covers * **Transportation:** * Parts for rail car interiors and bodies * Truck body panels and components * **General Engineering:** * Components requiring a combination of strength and formability * Welded structures * **Consumer Durables:** * Appliance parts * Furniture requiring a formed and painted finish --- ### **6. Key Characteristics & Advantages** * **Good Formability:** Especially in the annealed (O) temper, it exhibits excellent deep-drawing and bending characteristics, making it suitable for complex stamped parts. * **Good Strength-to-Weight Ratio:** In the T6 temper, it provides substantial strength for structural applications while remaining lightweight. * **Excellent Corrosion Resistance:** Inherits strong resistance to atmospheric corrosion from the Al-Mg-Si family, making it suitable for automotive and transport applications. * **Good Weldability:** It can be readily welded using common methods such as MIG and TIG without significant loss of properties in the heat-affected zone. * **Brazeability:** Suitable for brazing operations, which is advantageous for heat exchanger and radiator manufacturing (though it is less common in this role than specialized alloys like 3003). In summary, **AA 6004 Aluminum Alloy** is a reliable and versatile engineering alloy that fills a specific niche where **formability and strength** are both critical requirements. Its properties make it a preferred material for many automotive and fabricated components.

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 1943 gallon liquid totes Special package is available on request.