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WHAT IS ALUMINUM ALLOY AND TEMPER?

Aluminum Alloy Extrusion

Aluminum alloy is a type of metal that is widely used in various industrial applications due to its excellent properties such as high strength-to-weight ratio, corrosion resistance, and high thermal conductivity. However, to further enhance these properties, aluminum is often subjected to a process known as tempering. In this article, we will discuss the basics of aluminum alloy and tempering, their types, and their significance in various industries.

What is Aluminum Alloy?

Aluminum alloy is a type of metal made by combining aluminum with other metals such as copper, zinc, magnesium, or silicon to create a material with improved properties. The different types of aluminum alloys are categorized based on their composition, which affects their strength, hardness, and other mechanical properties. Common types of aluminum alloys include 1000, 3000, 5000, 6000, and 7000 series alloys.

What is Temper for Aluminum?

Temper, also known as heat treatment, is a process used to improve the properties of metals by subjecting them to controlled heating and cooling. Temper involves heating the metal to a specific temperature and holding it for a certain period before cooling it at a controlled rate. The process of tempering affects the internal structure of the metal and changes its mechanical properties.

Types of Temper for Aluminum Extrusion:

There are several types of temper used in aluminum alloys. They include:

O Temper: This is also known as annealing, and it involves heating the aluminum to a specific temperature, holding it for some time, and then allowing it to cool naturally. This type of temper improves the ductility and workability of the aluminum.

T Temper: This is a type of temper that involves heating the aluminum to a specific temperature and then quenching it in water or oil to cool it rapidly. The T temper provides excellent strength and hardness.

F Temper: This involves heating the aluminum to a specific temperature and then quenching it in water or oil to cool it rapidly. It is then heated again to a lower temperature and held for some time before cooling it again. The F temper provides excellent strength and toughness.

H Temper: This involves heating the aluminum to a specific temperature and then holding it at that temperature for a certain period before cooling it slowly. The H temper provides excellent strength and hardness.

Significance of Temper in Aluminum Alloy:

Temper is an essential process in the production of aluminum alloys because it affects the properties of the metal. The choice of temper is determined by the intended application of the aluminum. For example, aluminum alloys used in aircraft manufacturing require a high strength-to-weight ratio, and thus, they are subjected to T and F tempers. On the other hand, aluminum alloys used in kitchenware and packaging require good ductility and workability and are subjected to O temper.

Aluminum alloy and temper are two critical aspects of the manufacturing process of aluminum products. Aluminum alloys are created by combining aluminum with other metals to improve their mechanical properties, and tempering is a process used to further enhance these properties. The different types of temper are chosen based on the intended application of the aluminum alloy. Overall, the combination of aluminum alloy and temper has resulted in the development of lightweight, durable, and corrosion-resistant materials that have numerous applications in various industries.

 

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