3105 aluminum alloy coil is a versatile and durable material widely used in various industries due to its excellent corrosion resistance, good mechanical properties, and moderate strength. It belongs to the 3000 series aluminum alloys, which are primarily composed of aluminum and manganese, offering improved strength compared to pure aluminum while maintaining good workability.
3105 aluminum alloy coil is a common aluminum alloy known for its good corrosion resistance, weldability, and formability.
Composition: Primarily aluminum (Al) with additions of manganese (Mn), magnesium (Mg), and small amounts of other elements like silicon (Si), iron (Fe), copper (Cu), and zinc (Zn). The addition of manganese is crucial for its strength and corrosion resistance.
Corrosion Resistance: Excellent resistance to atmospheric corrosion, making it suitable for outdoor applications and exposure to marine environments. It's superior to 1000 series aluminum alloys in this regard.
Weldability: Good weldability using various techniques like gas tungsten arc welding (GTAW/TIG), gas metal arc welding (GMAW/MIG), and resistance welding.
Formability: Exhibits good formability, allowing it to be easily bent, stamped, drawn, and rolled into various shapes.
Strength: Moderate strength, higher than 1000 series aluminum but lower than higher-strength alloys like 5052 or 6061.
Non-Heat Treatable: Cannot be strengthened by heat treatment. Strengthening is achieved through cold working (strain hardening).
Temper Designations: Commonly available in tempers like:
O (Annealed): Softest temper, offering maximum formability.
H14 (Strain Hardened): Partially hardened by cold working and then stabilized.
H16 (Strain Hardened): More hardening than H14.
H18 (Strain Hardened): Highest level of strain hardening.
Roofing and Siding: Widely used for residential and commercial roofing and siding due to its corrosion resistance and formability.
Mobile Homes and RVs: Used for exterior panels and components.
Gutters and Downspouts: Excellent for handling rainwater and preventing corrosion.
Appliance Parts: Used in appliance manufacturing due to its formability and durability.
Sheet Metal Fabrication: General sheet metal work where moderate strength and good corrosion resistance are required.
Corrugated Sheets: Often used in corrugated form for structural applications.
Lighting Fixtures: Reflectors and other lighting components.
Storage Tanks: Small tanks and containers for non-corrosive substances.
Excellent Corrosion Resistance: Superior to 1000 series alloys.
Good Weldability: Easy to join using common welding methods.
Good Formability: Suitable for a variety of forming operations.
Relatively Low Cost: More affordable than some higher-strength aluminum alloys.
Lightweight: Compared to steel.
Aluminum (Al): Remainder
Manganese (Mn): 0.3% - 0.8%
Magnesium (Mg): 0.2% - 0.8%
Silicon (Si): 0.6% max
Iron (Fe): 0.7% max
Copper (Cu): 0.2% max
Zinc (Zn): 0.4% max
Tensile Strength: Varies depending on temper, typically between 16,000 psi (110 MPa) and 29,000 psi (200 MPa).
Yield Strength: Varies depending on temper, typically between 6,000 psi (41 MPa) and 25,000 psi (170 MPa).
Elongation: Varies depending on temper, but generally good formability.
Temper Selection: Choosing the correct temper is crucial for the desired strength and formability.
Welding Techniques: Proper welding procedures are essential to maintain corrosion resistance and mechanical properties.
Surface Treatment: Can be anodized or painted for enhanced corrosion protection and aesthetic appeal.
Thickness: Available in various thicknesses to suit different applications.
