3105 aluminum alloy has good corrosion resistance, good plasticity and processability, and the performance of gas welding and arc welding is good. 3105 aluminum has slightly higher strength than 3003 aluminum, others properties are similar to 3003 aluminum alloy. 3105 aluminium has good anti-rust property, good conductivity, electrical conductivity can be up to 41%, 3105 aluminum sheet has high plasticity in the annealing state, in the semi cold hardened, the plasticity is still better, it has low plasticity, good corrosion resistance, good weld-ability and poor cutting properties in cold hardening state.

The common product of 3105 aluminum alloy are 3105 aluminum sheet plate and 3105 aluminum foil and 3105 aluminum strip. The material temper of aluminium 3105 are O, H12, H14, H16, H18, H19, H22, H24, H26, H28, H32, H34, H36and H38. The thickness is 0.1-500 mm, the width is 100-2600 mm, the length is 500-16000 mm. The typical final product are bottle cover, beverage bottle cap, cosmetic cover, etc. The market applications include room partition, baffle, movable room board, gutter and downpipe, sheet forming parts, bottle stopper, etc.

The chemical composition of 3105 aluminum are:
Aluminum Al: allowance
Silicon- Si: less than 0.6%
Copper-Cu: less than 0.30%
Magnesium-Mg:0.20 ~ 0.8%
Zinc-Zn: less than 0.40%
Manganese-Mn:0.30 ~ 0.8%
Titanium-Ti: less than 0.10%
Chromium-Cr: less than 0.20%
Iron-Fe:0.000 ~ 0.700%

The mechanical properties of 3105 aluminium are:
Tensile strength σb :125 ~ 175 MPa
Elongation of delta δ5: > 1%