Inconel alloy 82, also known as Inconel 82, is a nickel-chromium-iron alloy widely used in chemical processing, nuclear power, and petrochemicals. Inconel 82 is known for its excellent oxidation and corrosion resistance, making it ideal for high-temperature applications. In this blog, we will examine what Inconel 82 is, its composition, physical and mechanical properties, uses, and heat treatment.
Inconel 82 Composition
Inconel 82 is a nickel-chromium-iron alloy that has a composition similar to other Inconel alloys. It has a high nickel content, around 70%, followed by 20% chromium, and the remaining content consists of iron, carbon, manganese, and silicon.
Inconel 82 Physical Properties
Inconel 82 has excellent physical properties that make it popular in various industries. It has a melting point of 1393°C, 8.04 grams per cubic centimetre density, and a thermal conductivity of 11.4 W/mk. The coefficient of thermal expansion of Inconel 82 is low, which means it can withstand high-temperature environments without deforming or cracking.
Inconel 82 Mechanical Properties
Inconel 82 has excellent mechanical properties that make it suitable for high-stress applications. It has a tensile strength of 620 MPa, yield strength of 310 MPa, and an elongation of 35%. Inconel 82 is also resistant to fatigue and creep, making it ideal for high-temperature environments.
Inconel 82 Uses
Inconel 82 is mainly used in industries that require high-temperature and corrosion-resistant materials. It is commonly used in chemical processing, nuclear power, petrochemicals, and heat exchangers. Inconel 82 is also used in welding applications as a filler material for Inconel alloys and other nickel-chromium-iron alloys.
Inconel 82 Hardness
Inconel 82 has a hardness of around 170 HB, making it a relatively soft material. However, it can be heat-treated to improve its hardness and strength.
Inconel 82 Heat Treatment
Inconel 82 can be heat-treated using a solution annealing process. The process involves heating the alloy to a specific temperature, holding it at that temperature for a specific time, and then cooling it to room temperature. Solution annealing improves the alloy’s mechanical properties and increases its hardness.
Conclusion
Inconel 82 is a versatile nickel-chromium-iron alloy that is used in a wide range of applications. It has excellent physical and mechanical properties making it suitable for high-temperature and corrosive environments. Inconel 82 can be heat-treated to improve its properties, and it is commonly used as a filler material in welding applications. Its popularity in various industries is a testament to its strength and durability, making it an important material in modern manufacturing.
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