Description

Alloy 90 is a nickel-based superalloy known for its high strength, excellent corrosion resistance, and good thermal stability. It is commonly used in various industries where high temperature and harsh environments are encountered.

Applications

Alloy 90 is widely used in aerospace applications, gas turbines, nuclear reactors, chemical processing equipment, and other components where high strength, excellent corrosion resistance, and thermal stability are required.

Blacksmith Applications

Alloy 90 is commonly used by blacksmiths for creating high-temperature resistant tools such as tongs, punches, anvils, and dies. Its excellent mechanical properties and resistance to oxidation make it suitable for forging applications in extreme heat environments.

Alloy 90 Forging Temperature

Forging of Alloy 90 is typically performed between 2000°F - 2200°F (1093°C to 1204°C), followed by slow cooling to room temperature to achieve the desired mechanical properties.

Alloy 90 Heat Treatment

Alloy 90 Annealing Temperature

Annealing of Alloy 90 is recommended at 1650°F (899°C) for a sufficient amount of time, followed by air or furnace cooling to relieve internal stresses and improve its overall ductility.

Alloy 90 Normalizing Temperature

Normalizing can be carried out at 1800°F to 1900°F (982°C to 1038°C) for a proper soak time, followed by air cooling. This process helps to refine the microstructure and enhance the material's toughness.

Alloy 90 Hardening Temperature

Hardening of Alloy 90 can be achieved by heating it to 1600°F to 1800°F (871°C to 982°C) followed by rapid cooling, such as water quenching or oil quenching, to obtain maximum strength and hardness.

Alloy 90 Tempering Temperature

Tempering is typically performed at temperatures ranging from 750°F to 1300°F (399°C to 704°C) to achieve a balance between strength and toughness, depending on the specific application requirements.

Machinability

Alloy 90 has a machinability rating of 35, indicating its poor machinability. Specialized cutting tools and techniques are required for machining this alloy.

Weldability

Alloy 90 has limited weldability. Preheating, low heat input during welding, and post-weld heat treatment are often necessary to minimize the risk of cracking and preserve its desirable properties.