Is Inconel625 a ductile material or a brittle material?

The main performance differences between plastic and brittle materials, as well as ultimate stress and elongation rate – http://211.100.7.175/tt/normal/cllx/kjzt/clkc/zh02/tm07/tm07_01.gif – are indicators used to measure a material’s plastic properties. In engineering, materials with a value of http://211.100.7.175/tt/normal/cllx/kjzt/clkc/zh02/tm07/tm07_01.gif greater than 5% are generally referred to as plastic materials, such as steel, copper, aluminum alloys, etc ； Materials with a value of http://211.100.7.175/tt/normal/cllx/kjzt/clkc/zh02/tm07/tm07_01.gif less than 5% are referred to as brittle materials, such as cast iron, ceramics, and stone. Low-carbon steel is a typical ductile material, with an elongation rate of 20–30% http://211.100.7.175/tt/normal/cllx/kjzt/clkc/zh02/tm07/tm07_01.gif. Cast iron is a typical brittle material, with an elongation rate of http://211.100.7.175/tt/normal/cllx/kjzt/clkc/zh02/tm07/tm07_01.gif＜1％. 　　Components made of plastic materials such as low-carbon steel will, when the stress reaches the yield limit http://211.100.7.175/tt/normal/cllx/kjzt/clkc/zh02/tm07/tm07_02.gif, undergo significant plastic deformation that alters their original shape and size, rendering them unable to function properly. Components made of brittle materials such as cast iron will fracture when the stress reaches their strength limit http://211.100.7.175/tt/normal/cllx/kjzt/clkc/zh02/tm07/tm07_03.gif, even though the deformation is still minimal before fracture occurs. The stress at which a component loses its ability to function properly or suffers fracture failure is known as the ultimate stress. 　　Plastic materials undergo significant plastic deformation before fracturing; therefore, their ultimate stress should be the yield strength http://211.100.7.175/tt/normal/cllx/kjzt/clkc/zh02/tm07/tm07_02.gif. In contrast, brittle materials do not exhibit significant deformation until they fracture, so their ultimate stress is equivalent to their strength limit http://211.100.7.175/tt/normal/cllx/kjzt/clkc/zh02/tm07/tm07_03.gif. Inconel 625 is a nickel-chromium-molybdenum alloy that also contains a small amount of niobium, which helps to enhance the hardness of the alloy; as a result, this alloy can achieve high strength without the need for heat treatment. It is capable of resisting corrosion in various harsh acidic environments, especially pitting and crevice corrosion. It is used in chemical processing, the aviation industry, turbine engines, pollution control equipment, and nuclear reactors. Designation: NS336. Key properties of Inconel 625: corrosion and oxidation resistance, good tensile and fatigue properties across a wide temperature range from low temperatures up to 980°C, as well as resistance to stress corrosion in salt spray atmospheres. Examples of applications: Suitable for manufacturing components of aero engines, aerospace structural parts, chemical processing equipment, as well as in applications where exposure to seawater and high mechanical stresses are present. Personally, I believe Inconel 625 is a plastic material. Hope experts can give some advice!