Description

Alloy 625 is a nickel-based alloy known for its excellent corrosion resistance, high strength, and versatility. It is widely used in various industries where resistance to extreme environments and elevated temperatures is required.

Applications

Alloy 625 is commonly used in chemical processing, aerospace, marine, oil and gas, and nuclear industries. It is used for components such as heat exchangers, turbines, expansion joints, valves, and pumps, where corrosion resistance and strength are critical.

Blacksmith Applications

Alloy 625 is a valuable tool for blacksmiths due to its exceptional strength, toughness, and resistance to high temperatures. It can be utilized for forging specialized tools such as tongs, punches, chisels, and hammers.

625 Forging Temperature

Forging of Alloy 625 is usually conducted at temperatures between 1850°F - 2200°F (1010°C - 1204°C), followed by air cooling or rapid quenching to retain desired properties.

625 Heat Treatment

625 Annealing Temperature

Annealing of Alloy 625 is typically carried out at temperatures between 1700°F - 1900°F (927°C - 1038°C) for a sufficient duration, followed by air cooling or water quenching to relieve stress and restore ductility.

625 Normalizing Temperature

Normalizing of Alloy 625 is commonly performed at temperatures between 1650°F - 1800°F (899°C - 982°C) for a proper soak time, followed by air cooling or water quenching to refine the microstructure.

625 Hardening Temperature

Alloy 625 does not undergo a significant hardening process through heat treatment alone. It achieves its strength through cold working or precipitation strengthening methods.

625 Tempering Temperature

Tempering of Alloy 625 is not typically required since the alloy is mainly used in its solution-annealed condition. However, if necessary, it can be done at temperatures between 1100°F - 1400°F (593°C - 760°C) to improve toughness.

Machinability

Alloy 625 is classified with low machinability due to its high strength and ability to work harden quickly. Special tools and techniques are often required to machine Alloy 625 effectively.

Weldability

Alloy 625 exhibits good weldability using various welding techniques such as gas tungsten arc welding (GTAW) and shielded metal arc welding (SMAW). It is important to follow proper pre-welding and post-welding measures to ensure desirable properties and avoid cracking.