5005 Alloy O H32 H34 H36 H38 Aluminum Sheet for Cooking Utensils and Architectural Aplications:

Aluminium alloy 5005 contains nominally 0.8% magnesium. It has medium strength, good weldability, and good corrosion resistance in marine atmospheres. It also has the low density and excellent thermal conductivity common to all aluminium alloys. It is the most commonly used grade of aluminium in sheet and plate form. Aluminium alloy 5005 is a lean aluminium magnesium alloy which can be hardened by cold work. It is not heat treatable to higher strength.

Heat Treatment of 5005 aluminum alloy:

Alloy 5005 is not hardenable by heat treatment. It can be significantly hardened by cold work (eg by cold rolling) and various “H” tempers are produced – most commonly H32 (¼ Hard) and H34 (½ Hard) – as well as the soft annealed Temper O condition. The alloy spontaneously age-softens at room temperature immediately after cold work but will eventually reach a stable condition; all flat rolled mill products are supplied with stable properties. This is usually achieved by a stabilisation thermal treatment, either a low temperature thermal treatment or as a result of heat introduced during rolling, which results in the H3x tempers. H2x tempers are more severely strain hardened and then partially annealed, again to quickly reach the required stable temper properties. To soften Alloy 5005 it can be annealed by heating to 345°C, hold until uniform temperature then cool and the rate of cooling is not important.

Machining of 5005 aluminum sheet:

Machinability is poor, with the harder tempers, such as H34 and above being somewhat easier to machine.

Tempers H22 and H24 etc may not meet maximum tensile strength and minimum yield strength limits, but if supplied in place of ordered H32 or H34 all limits must be complied with. Properties for H32 only specified up to 50mm, H34 to 25mm, H36 to 4.0mm and H38 to 3.2mm thick. Specialist tempers such as F, H116, H112 and H141 are also possible in 5052 – refer to standards for details.

Typical applications:

Packing of 5005 aluminium sheet: