1. What are the main properties of Inconel 718 Alloy Plate/Sheet?
Answer:
Inconel 718 is a nickel-chromium alloy known for its excellent high-temperature strength, corrosion resistance, and oxidation resistance. It maintains mechanical properties up to 700°C (1292°F) and exhibits good fatigue and creep resistance, making it ideal for aerospace, power generation, and chemical processing applications.
2. What thicknesses and sizes are available for Inconel 718 sheets and plates?
Answer:
The thickness can range from 0.5 mm up to 200 mm depending on the rolling process, and standard widths are usually 500 mm to 2000 mm. Lengths can be customized according to customer requirements. Many suppliers also support cutting-to-size for smaller applications.
3. Can Inconel 718 Alloy Plate/Sheet be welded or machined?
Answer:
Yes, Inconel 718 can be welded using techniques such as TIG, MIG, or electron beam welding, but preheating and proper post-weld heat treatment are recommended to avoid cracking. Machining is more challenging than mild steel due to its hardness and work hardening, but using carbide tools and proper coolant can achieve good results.
4. What heat treatment processes are recommended for Inconel 718?
Answer:
Common heat treatments include:
Solution annealing: 980–1010°C followed by rapid cooling to dissolve gamma prime and gamma double prime phases.
Aging: Two-step aging at 720°C for 8 hours, then 620°C for 8 hours to achieve peak hardness and maximum strength.
Proper heat treatment ensures optimal mechanical performance and creep resistance.
5. What industries commonly use Inconel 718 Alloy Plate/Sheet?
Answer:
Inconel 718 is widely used in:
Aerospace (turbine discs, engine components)
Power generation (boilers, heat exchangers)
Chemical and petrochemical processing (reactor vessels, piping)
Marine engineering and cryogenic applications
Its combination of high strength, corrosion resistance, and thermal stability makes it versatile for extreme environments.
