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Heat-Resistant Hard Aluminum Alloys
Aluminum is a highly versatile metal with a wide range of properties. It is light weight, corrosion resistant, ductile and strong. However, aluminums low melting point makes it unsuitable for use in applications that require high temperatures. Aluminum alloys are therefore used to improve the metal heat resistance and provide the desired properties.
Heat-resistant aluminum alloys are materials that have been designed to maintain their strength, hardness, and other characteristics even when exposed to prolonged and high temperatures. They are designed to operate safely at temperatures up to 500°C (932°F). They can be used for a variety of applications that require resistance to high temperatures, such as engine components, furnace components, energy transmission, space ready components and so on.
Heat-resistant aluminum alloys are made from a combination of aluminum, iron, silicon, manganese, and other materials. Some of the most common heat-resistant alloys include: 2000 series aluminum-copper alloys, 7000 series aluminum-zinc alloys, and 6000 series aluminum-magnesium alloys.
The 2000 series aluminum-copper alloys are comprised of copper, manganese and sometimes maganese and silicon. These alloys provide excellent strength, strength-to-weight ratio, good thermal conductivity and good corrosion resistance all in a lightweight package. Its applications include furnace elements, heating and cooling systems, high temperature parts and components exposed to chemicals, and more.
The 7000 series aluminum-zinc alloys contain up to 5% zinc and are used where high-stress applications are required. They are designed to reduce creep and resist stress elongation under pressure. These alloys are heat treatable and good machinability. Applications include electrical components, automotive parts and furniture hardware.
The 6000 series aluminum-magnesium alloys contain up to 4% magnesium and are relatively light weight, offering good strength and corrosion resistance. These alloys are used for aerospace and marine parts, structural frames, and components for structural bolting.
Heat-resistant aluminum alloys offer the advantages of providing excellent resistance to high temperatures without sacrificing strength. Their weight savings is also beneficial in many applications, and they are corrosion resistant and durable.
Heat-resistant aluminum alloys are increasingly being used in a variety of applications in industry, such as aerospace, automotive, electrical, and energy. With the ever increasing demand for energy and the accompanying rise in temperatures, heat-resistant aluminum alloys are necessary for the safe operation and longevity of components and systems.
