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1050 'O' Sheet

1050 'O' Sheet

Aluminium alloy 1050 is a widely used grade for general sheet metal applications where moderate strength is required. It offers excellent corrosion resistance, high ductility, and a highly reflective surface finish.

APPLICATIONS

Alloy 1050 is typically used for:

  • • Chemical process plant equipment
  • • Food industry containers
  • • Pyrotechnic powder
  • • Architectural flashings
  • • Lamp reflectors
  • • Cable sheathing

Chemical Composition

Alloy 1050

Spec: BS EN 573-3:2009

Chemical Element% Present
Manganese (Mn)0.0 – 0.05
Iron (Fe)0.0 – 0.40
Copper (Cu)0.0 – 0.05
Magnesium (Mg)0.0 – 0.05
Silicon (Si)0.0 – 0.25
Zinc (Zn)0.0 – 0.07
Titanium (Ti)0.0 – 0.05
Other (Each)0.0 – 0.03
Aluminium (Al)Balance

Physical Properties

PropertyValue
Density2.71 g/cm³
Melting Point650 °C
Thermal Expansion24 ×10⁻⁶ /K
Modulus of Elasticity71 GPa
Thermal Conductivity222 W/m·K
Electrical Resistivity0.0282 ×10⁻⁶ Ω·m

Mechanical Properties

Sheet: 0.2 mm to 6.00 mm

Spec: BS EN 485-2:2008

PropertyValue
Tensile Strength65 – 95 MPa
Proof Stress20 MPa (Min)
Hardness (Brinell)20 HB

Alloy Designations

Aluminium alloy 1050 may also be referenced under the following designations (not necessarily direct equivalents):

  • AA1050A
  • S1B
  • A91050

Temper Types

  • O – Soft

Supplied Forms

  • Plain sheet
  • Plain sheet with PVC coating (one side)
  • Stucco sheet
  • Stucco sheet with PVC coating (one side)
  • Sheet

Weldability

For welding 1050 to itself or alloys in the same subgroup, filler wire 1100 is recommended. For welding to 5083, 5086, or 7XXX series alloys, use 5356 filler wire. For other alloys, 4043 filler wire is recommended.

Fabrication

  • Workability (Cold): Excellent
  • Machinability: Poor
  • Weldability – Gas: Excellent
  • Weldability – Arc: Excellent
  • Weldability – Resistance: Excellent
  • Brazability: Excellent
  • Solderability: Excellent