3105 Aluminum Coil
3105 aluminum alloy coil, with its excellent strength, formability, corrosion resistance, and weldability, holds an important position in industries such as construction, transportation, electronics, home appliances, and advertising. Its multiple temper conditions make it suitable for applications requiring different strengths and processing needs, especially in external environments and demanding sheet metal working tasks.
3105 aluminum alloy is based on 98% pure aluminum, typically enhanced by adding small amounts of alloying elements such as copper, magnesium, manganese, and silicon to improve its strength. This alloy belongs to a non-heat-treatable, work-hardened category of aluminum alloys. While it cannot be hardened through heat treatment, it exhibits outstanding corrosion resistance, formability, and weldability, making it widely used across various fields.
3105 Aluminum Coil Characteristics
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High Corrosion Resistance: 3105 aluminum alloy has excellent corrosion resistance, particularly suited for exposure in humid, salt-laden environments, such as marine conditions. Its surface naturally forms an oxide film, which further enhances its corrosion resistance.
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Good Formability: 3105 aluminum alloy has excellent formability, making it suitable for various forming processes. It can be processed through a variety of cold-working methods, including stamping and stretching, making it highly efficient during manufacturing and processing.
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Excellent Weldability: Due to its chemical composition, 3105 aluminum alloy offers good weldability, suitable for various aluminum welding techniques such as TIG welding and gas tungsten arc welding (GTAW).
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Good Strength: The strength of 3105 aluminum alloy is higher than that of 1100 and 3003 aluminum alloys. Although its strength is lower than some heat-treated aluminum alloys (such as 7075), it offers a good balance for applications requiring higher strength than 1000 series alloys.
3105 Aluminum Coil Temper
Common tempers for 3105 aluminum alloy include H14, H16, H18, H19, H22, H24, H111, H12, H25, H26, H28, and O, each representing different levels of work hardening and heat treatment states.
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H14, H16, H18, H19: These are semi-hardened or fully hardened states, suitable for applications requiring certain strength and formability.
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H22, H24: These have medium strength and are typically used for sheet metal processing requiring good formability and relatively high strength.
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H111: This is a special mark indicating a semi-hardened state, typically used in applications that require good ductility and crack resistance.
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H12, H25, H26, H28: These states also represent different levels of hardening, suitable for specific sheet metal processing and precision forming.
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O State: Fully annealed state, exhibiting the best ductility, suitable for manufacturing processes that require extremely high formability.
3105 Aluminum Coil Applications
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General Sheet Metal Processing: Due to its excellent formability, 3105 aluminum alloy is widely used in general sheet metal processing, particularly in applications requiring higher strength than 1000 series aluminum alloys.
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Residential Exterior Walls: The high strength and corrosion resistance of 3105 aluminum coil make it an ideal material for exterior cladding of residential buildings, particularly in areas exposed to atmospheric conditions.
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Mobile Homes: Due to its corrosion resistance and ease of forming, 3105 aluminum alloy is widely used in the external structures, bodywork, and accessories of mobile homes.
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Signage Production: 3105 aluminum coil, with its excellent surface coating properties and processability, is suitable for making various signs and billboards, especially outdoor advertisements that require UV and corrosion resistance.
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Vehicle and Aircraft Components: Due to its relatively high strength, 3105 aluminum coil is also used in certain lightweight vehicle body parts and aircraft components that require higher strength.
Technical Parameter of Specifications Of Alloy Aluminum Coil 3105
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Alloy
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3105
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Temper
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O, H12, H14, H16H18, H19, H22, H24, H26, H28, H32, H34, H36, H38
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|
Thickness(mm)
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0.2-8.0
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|
Width(mm)
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100-2650
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Length(mm)
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c
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3105 Aluminum Coil Chemical Composition
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Element
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3105
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|
Silicon
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0.6
|
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Iron
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0.7
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Copper
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0.30
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Manganese
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0.30-0.8
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Magnesium
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0.20-0.8
|
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Chromium
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0.20
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Zinc
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0.40
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Titanium
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0.10
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Aluminum
|
balance
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|
Other Elements (each)
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0.05
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Other Elements (total)
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0.15
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3105 Aluminum Mechanical Properties
Mechanical property requirements for strain hardened H12 temper (¼ hard) as specified in ASTM B209 and ASME SB209
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Thickness (inch)
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Yield Strength Min. (ksi)
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Tensile Strength (ksi)
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Elongation (%) Min.
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Min.
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Max.
|
|
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0.017 – 0.019
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15.0
|
19.0
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26.0
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1
|
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0.020 – 0.031
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15.0
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19.0
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26.0
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1
|
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0.032 – 0.050
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15.0
|
19.0
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26.0
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2
|
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0.051 – 0.080
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15.0
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19.0
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26.0
|
3
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Mechanical property requirements for strain hardened H14 temper (½ hard) as specified in ASTM B209 and ASME SB209
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Thickness (inch)
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Yield Strength Min. (ksi)
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Tensile Strength (ksi)
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Elongation (%) Min.
|
|
Min.
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Max.
|
|
|
0.017 – 0.019
|
18.0
|
22.0
|
29.0
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1
|
|
0.020 – 0.031
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18.0
|
22.0
|
29.0
|
1
|
|
0.032 – 0.050
|
18.0
|
22.0
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29.0
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2
|
|
0.051 – 0.080
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18.0
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22.0
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29.0
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2
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Physical Properties for Aluminim 3105
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Property
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3105 Data
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Density, lb/in3
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0.0983
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Modulus of Elasticity, psi
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10.0 x 106
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Coefficient of Thermal Expansion, 68-212˚F, /˚F
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12.1 x 10-6
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Thermal Conductivity, Btu/ft hr ˚F
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99
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Specific Heat, Btu/lb ˚F
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0.214
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Electrical Resistivity, Microohm-in
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1.504
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Typical Standards for Aluminum 3105
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3105
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ASTM B209
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ASME SB209
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Further reading
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