Good Aluminum Sheet For Bending

Bending is one of the most common sheet metal fabrication operations.

Good aluminum sheet for bending.

Place the fracture line over the edge of a table and bend the overhang slightly downwards. The bending process for aluminium is useful and cost effective. With the aid of a straight edge and a sharp knife score both sides of the aluminium sheet. The top 3 aluminum alloys for being are the 3003 which has medium strength and the best cold workability the 5052 which is the highest strength alloy of the more common non heat treatable grades and the 6061 which is one of the more versatile heat treatable alloys.

Sheet aluminium can be cut without the need for a guillotine or tin snips which tend to deform the metal. This will give you a nice bend. Series 5xxx are the aluminum magnesium alloys. Grain direction bend line should go across the grain for the best bend having said that a typical sharp 90 bend on a piece of 1 8 aluminum sheet should be a minimum 1 8 inside radius use either 3003 or 5052 ideally the bend line should go across the grain.

Proper bending can be done with annealing the aluminum first although it s not an ideal candidate for formed parts. Heavy gauge aluminum bars or rods must be heat bent using an acetylene torch and vice. That s the ideal anyway but the reality is that many parts arrive at the press brake in a less than ideal state. This is a highly technical and potentially dangerous process best left to a professional metalworker.

Also known as press braking flanging die bending folding and edging this method is used to deform a material to an angular shape. It gives you design flexibility integrated functions good aesthetics and complex geometries you can also choose between different bending processes such as roller bending press bending draw bending and stretch bending. This weakens the aluminium and creates a fracture line. Miserable to bend cracking is very common and cold bending will always weaken the metal.

Highly formable and one of the best kinds of aluminum to bend. The force must exceed the material s yield strength to achieve a plastic deformation. This is done through the application of force on a workpiece. These heat treatable alloys exhibit great strength good corrosion resistance and ease of formability.

A bending brake will be best suited for shaping flat square sheets of light gauge aluminum. The best aluminum alloys for bending come down to series 3xxx and series 5xxx and sometimes series 6xxx. As a general rule the machinability of any aluminum alloy is inversely proportional to its formability. 6061 t6 aluminum is tempered and notorious for not bending easily.

From a bending perspective it s always best to bend these parts in an annealed state and then temper them to the correct condition. Series 6xxx are the aluminum magnesium silicon alloys.