Aluminum 3105

Aging Procedure

Not applicable to this alloy.

Annealing Procedure

Annealing from a cold worked condition may be accomplished at 650 F followed by air cooling.

Applications

Commonly used in the manufacture of residential siding, mobile homes, and rain carrying goods. Is commonly used in sheet metal work.

Cold Workability

The cold working characteristics of AL 3105 are very good, even in the harder cold worked tempers. Bend radii for sheet up to 1/16" thick vary from 1/2 to one t for all tempers.

Forgeability

Forging, if required, may be done in the range of 950 to 700 F.

Formability

The forming characteristics of the alloy are very good by all conventional processes regardless of temper. Bend radii should be in the one thickness to 2 t range for annealed, H12, H14 and H16 tempers. The H18 temper requires bend radii of 2 to 7 t, depending upon thickness of the material.

Hardening Procedure

Hardens to the H12, 14, 16, 18 or 25 tempers only by cold working.

Heat Treatability

This alloy does not respond to heat treatment except for annealing during cold working.

Hot Workability

Hot working may be accomplished at 700 to 400 F.

Machinability

Machinability of AL 3105 is fair. Oil lubricants should be used for all machining operations. Machinability of the alloy when in the harder (H) tempers is improved over machining in the annealed (O) condition.

Other Mechanical Properties

Typical shear strength values are: H14 15 ksi and H16 17 ksi.

Other Physical Properties

Electrical conductivity 41% of copper.

Principle Design Features

This is an essentially 98% pure aluminum alloy with minor additions for strength. It is not hardenable by heat treatment. Corrosion resistance, formability and welding characteristics are excellent.

Tempering Procedure

Not applicable.

Weldability

Weldability of this alloy is excellent by all commercial techniques. Arc welding is preferred for the best results.