GH718 alloy is renowned for its excellent high-temperature performance and corrosion resistance, maintaining good mechanical properties even under extreme temperature conditions. Its widespread use stems from its superior corrosion resistance, high-temperature strength, and good machinability, making it valuable across aerospace, energy, chemical, and medical industries. Key characteristics of GH718 include:
High-Temperature Performance: GH718 exhibits excellent high-temperature strength and heat resistance, maintaining stable mechanical properties in the temperature range of -253°C to 704°C. This allows it to bear loads effectively even at high temperatures.
Corrosion Resistance: GH718 resists corrosion from various strong acids, alkalis, and salt solutions. It also maintains its resistance under high-temperature and high-pressure conditions, making it ideal for chemical, marine, and petroleum industries.
Fatigue Resistance: The alloy has a good fatigue life and crack propagation resistance. It can withstand cyclic loads under high-temperature conditions without succumbing to fatigue, making it suitable for long-term use in high-temperature environments.
Machinability: GH718 offers good machinability, allowing it to be formed and processed using various methods. However, due to its relatively high hardness and strength, the tooling and equipment used must be highly wear-resistant during machining.
Magnetic Properties: GH718 has low magnetic properties, making it an ideal choice for applications sensitive to magnetism, such as magnetic field detectors in aerospace industries.
These properties make GH718 a versatile high-temperature alloy, extensively used in fields such as aerospace, petrochemical, and nuclear industries.