In marine environments, color coated aluminum is used for boat interiors, hulls, and other marine components due to its resistance to corrosion from saltwater.
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Color coated aluminum is used for solar panel frames and components due to its lightweight and corrosion-resistant properties.
United does not supply T tempers. However, United can supply heat treatable alloys , , and in “O” (annealed) or “F” (as-fabricated) temper.
This will allow easier forming of the part in a softer condition, and the part can be hardened later.
As an alternative, United offers some -series alloys, such as and , that can be as strong or stronger than some
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of the T tempers. -H38 approaches the strength level of -T6. is actually stronger than -T6 when in the H34 or harder tempers.
United’s Customer Service and Technical Departments can help. Please inquire.
The heat treatment known as “annealing” is used to soften an aluminum alloy. To make it fully soft temperatures in excess of 600˚ F must be used under conditions of controlled atmosphere and time constraints. UA Metallurgical staff can advise more fully on a case by case basis. Some aluminum alloys obtain their highest physical properties via a two stage heat treatment process called “Solution heat treatment and aging”. In this process the material is first heated to en extremely high temperature (close to the melting point) under very carefully controlled conditions and then rapidly quenched to room temperature. This is followed by a low temperature process called aging by which the full properties of the material are developed. Again, please contact UA Metallurgical staff for case by case advice in this area.
Yes, but unlike steel which rusts to red oxide, the corrosion product (Aluminum oxide) is not only a very hard impermeable substance but also one which adheres very tightly to the Aluminum surface. This provides a “self healing” protective coating which, after the initial exposure to air / moisture will protect the surface from further attack. Of course, in the presence of more aggressive agents such as Alkalies, excessive moisture or other metals which promote galvanic corrosion such as Copper, the surface is prone to various forms of corrosion such as ‘Pitting ‘ or ‘White staining’ which occur to various degrees depending on the alloy selected, the conditions, and a number of other factors. Consult with one of UA’s Metallurgical team for specific case details.
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