Overview
6003 aluminum alloy is a medium-strength alloy from the 6xxx series, primarily composed of aluminum, magnesium, and silicon. It is specifically designed for extrusion applications, offering a balance of strength, formability, and corrosion resistance. This alloy is heat-treatable and commonly supplied in T4, T5, or T6 tempers. Its excellent extrudability makes it a preferred choice for complex cross-sectional profiles in architectural and structural applications. The alloy's versatility has led to widespread adoption across multiple industries.
Physical and Chemical Properties
6003 alloy exhibits a density of 2.70 g/cm³, typical for aluminum alloys, and a melting point around 600°C. Its mechanical properties vary with temper, with tensile strength ranging from 170 to 240 MPa in common tempers. The alloy demonstrates good corrosion resistance, particularly in atmospheric conditions, due to the formation of a protective oxide layer. Its thermal conductivity is approximately 193 W/m·K, and electrical conductivity about 50% IACS (International Annealed Copper Standard). These properties make it suitable for both structural and some electrical applications.
Main Applications
The primary application of 6003 aluminum alloy is in extruded profiles for architectural and construction purposes, including window frames, door frames, and curtain wall systems. Its excellent extrudability allows for complex shapes with tight tolerances. In the automotive industry, 6003 is used for structural components, trim parts, and heat exchangers. Industrial applications include machinery parts, conveyor systems, and furniture components where moderate strength and good corrosion resistance are required.
Safety and Storage
While aluminum alloys are generally safe to handle, precautions should be taken during machining operations to avoid inhalation of fine particles. Proper ventilation and personal protective equipment (PPE) including dust masks and eye protection are recommended. For storage, 6003 alloy should be kept in a dry environment to prevent surface oxidation. Stacking should be done carefully to avoid deformation or surface damage. Long-term outdoor storage should be avoided unless properly protected from environmental elements.
B2B Procurement Guide
When procuring 6003 aluminum alloy, buyers should specify the required temper (T4, T5, or T6) and dimensional tolerances. Certification to relevant standards such as ASTM B221 or EN 573-3 should be requested. Consider the supplier's capability to provide material test reports (MTRs) verifying chemical composition and mechanical properties. For large-volume purchases, negotiate pricing based on the London Metal Exchange (LME) aluminum price plus processing fees. Lead times may vary from 4-8 weeks for standard profiles to 12+ weeks for custom extrusions.
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