What is the difference between Inconel 625 and 718 alloy?
What are the uses of Inconel 625 alloy?
Inconel 625 can be used as mooring rope wire rope, ship propeller blades, submarine quick disconnect connectors, naval multi-purpose boat exhaust ducts, submarine communication cable sheaths, submarine sensor control devices, steam pipe bellows, etc.
What is the difference between 625 and 718?
Both are nickel alloys, but they are differentiated by the different amounts of various chemicals in each alloy. 625 alloy is primarily nickel-based, while 718 alloy is primarily nickel + cobalt (Ni + Co). The use of nickel + cobalt in 718 alloy means it has higher hardness and strength.
What is the ASTM standard for Inconel 625 pipe?
Inconel 625 is a solution hardened high temperature alloy suitable for high temperature and high pressure applications. Pipes produced to ASTM B444 UNS N06625 are generally seamless.
What are the advantages of Inconel 625?
INCONEL 625 not only has high tensile strength, but also high creep strength, high rupture strength and excellent weldability. These properties make it suitable for aerospace applications, including duct and exhaust systems, turbine shrouds and seals, and thrust reverser systems.
Inconel Alloy 625 Vs Inconel Alloy 718
Alloy 625 and Alloy 718 (commonly referred to as Inconel 625 and Inconel 718) are both nickel alloys, both are high temperature alloys, and both belong to the Inconel alloy family. So, what is the difference between Inconel 625 and 718?
What is the difference between Inconel 625 and 718?
We will analyze the difference between Inconel 625 and 718 in detail, from chemical composition to recommended uses. First, let's understand the relevant terms.
Composition
The first difference between Inconel Alloy 625 and Alloy 718 is their chemical composition. Both are nickel alloys, but each contains different amounts of various chemicals that differentiate them.
Inconel Alloy 625 is primarily nickel-based, while Alloy 718 is primarily nickel+cobalt (Ni+Co). The use of Ni+Co in Alloy 718 means it is harder and stronger. Alloy 625, on the other hand, has higher levels of chromium and molybdenum, making it more corrosion resistant. See below for a full comparison of the chemical compositions of Inconel 625 and 718.
Application
Inconel 625 and Inconel 718 are used in a variety of industries and applications. However, their individual compositions and properties make each alloy excel in certain areas.
Applications of Inconel 625
Inconel 625 is most commonly used in the oil and gas industry due to its excellent corrosion resistance. This makes it the alloy of choice for subsea equipment. It is also used in the aerospace industry in corrosive environments such as exhaust systems, furnaces, and engine thrust reversers.
Applications of Inconel 718
Inconel 718 is a mainstay of the aerospace industry. Its superior heat resistance makes it ideal for applications in high-temperature environments, including engine components. It is also used in high-performance automotive engines in the motorsports industry.
