Aluminium Alloy 3105-F Datasheet

Aluminium Alloy 3105 is an essentially 98% pure aluminium alloy with minor additions for strength.It is used in general sheet metal works requiring greater strength than is provided by 1000 series alloys. Most commonly this alloy is stocked in Chequered plates. It is not hardenable by heat treatment. Corrosion resistance, formability and welding characteristics are excellent.

Applications for Aluminium Alloy 3105

  • Vehicle Bodies
  • Refrigerated Trucks
  • Ambulances
  • Cold Rooms
  • Anti skid flooring
  • Ship platforms
  • Stair Treads

Chemical Compositions of Aluminium Alloy 3105

Element Composition %
Silicon (Si) 0.6
Iron (Fe) 0.05 - 0.30
Copper (Cu) 0.05 - 0.30
Manganese (Mn) 0.30 - 0.80
Magnesium (Mg) 0.20 - 0.80
Chromium (Cr) 0.05 - 0.30
Zinc (Zn) 0.0 - 0.40
Titanium (Ti) 0.05 - 0.10
Total (Others) 0.0 - 0.15
Other (Each) 0.0 - 0.05
Aluminium (Al) Balance

Mechanical Properties of Aluminium Alloy 3105-F

Property Value
Proof Stress 115 Min MPa
Tensile Strength 110 - 145 MPa
Elongation at 50 mm 20 Min %
Hardness Brinell 45 HB
Please note that Mechanical Properties shown are for F temper

Aluminium Alloy 3105 Weldability

Gas
Very Good
Arc
Very Good
Brazability
Very Good
Resistance
Excellent

Aluminium Alloy 3105 Fabrication

Machinability
Acceptable
Workability - Cold
Good

Generic Physical Properties of Aluminium Alloy 3105

Property Value
Density 2.71 g/cm3
Melting Point 643 - 657°C
Thermal Expansion 23.1 ×10−6 /K
Modulus of Elasticity 69.5 GPa
Thermal Conductivity 160 W/m.K
Electrical Resistivity 0.034 ×10−6Ω.m

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