3105 Aluminum Sheet

3105 Aluminum Sheet is a 98% aluminum alloy with minor additions for improved strength. It is routinely stocked nationwide across our network of 40+ branches.

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General Info About Aluminum 3105

Aluminum 3105 is 98% pure aluminum with the addition of specific alloys for strength improvement. This alloy can’t be hardened by heat treatment. It has excellent weldability, formability, and corrosion resistance.

More Details About Aluminum 3105

  • Advantages/Disadvantages

    Aluminum 3105 has excellent corrosion resistance and formability. On the other hand, it is not heat-treatable.

  • Industries

    Typically, Aluminum 3105 is used for the manufacturing of residential siding, rain carrying goods, and mobile homes.

  • Machining

    Aluminum 3105 is okay in machinability. The use of oil lubricants is recommended.

  • Welding

    Aluminum 3105 has excellent weldability.

  • Heat Treatment

    Aluminum 3105 is not heat-treatable except for annealing during cold welding.

Chemical Properties


Mechanical Properties

MaterialTemperTensile Strength (N/mm2)Yield Strength (N/mm2)Elongation on 50mm (0.5mm)Elongation on 50mm (0.8mm)Elongation on 50mm (1.3mm)Elongation on 50mm (2.6mm)
3105 Sheet0110-155-16182020
3105 SheetH12130-1751152345
3105 SheetH14160-2051452233
3105 SheetH16185-2301701123
3105 SheetH182151901112

Questions About Aluminum 3105

  • What is the difference between 3003 H14 vs 3105 H24?

    There are a couple differences between 3003 H14 and 3105 H24. One of them is the Brinell Hardness; 3003 H14 has 42 BHN and 3105 H24 has 47 BHN. Another difference is the Fatigue Strength; 3003 H14 has only 60 MPa, whereas 3105 H24 has 74 MPa. In the alloy composition, 3003 H14 contains more Magnesium than 3105 H24. But 3105 H24 contains a little bit of Titanium, Chromium and Copper that 3003 H14 does not have.

  • What are the specifications of 3105 H24 aluminum?

    3105 H24 aluminum has a yield strength of 152 MPa and ultimate tensile strength of 179 MPa.

  • What are the specifications of 3105 H14 aluminum?

    3105 H14 aluminum has a yield strength of 152 MPa and a tensile strength of 172 MPa.

  • What is 3105 painted aluminum sheet?

    3105 painted aluminum sheet is an alloy that contains 1.2% manganese to increase the strength over pure aluminum. Painted aluminum sheet is specifically designed so that it offers a hard, abrasive resistance coat, but also gives alloy flexibility for forming and fabricating. 3105 painted aluminum is often used for sign making, mobile homes, residential siding, and in sheet metal work.

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