1.What is the ASTM grade of Inconel 625?
Tensile Strength: The minimum tensile strength of Inconel 625 is typically around 830 MPa (120000 psi).
Yield Strength: The 0.2% offset yield strength is approximately 415 MPa (60000 psi).
Elongation: It has an elongation of about 40% in the annealed condition. In addition, Inconel 625 maintains good mechanical properties at high temperatures, with low creep and stress - rupture rates.
3.What is the chemical composition of inconel 738?
Nickel (Ni): The main component, with a content of around 61% minimum.
Chromium (Cr): Usually 20 - 23%.
Molybdenum (Mo): 8 - 10%.
Niobium (Nb) + Tantalum (Ta): 3.15 - 4.15%.
Iron (Fe): Maximum 5.0%.
Carbon (C): Maximum 0.10%.
Manganese (Mn): Maximum 0.50%.
Silicon (Si): Maximum 0.50%.
Phosphorus (P): Maximum 0.015%.
Sulfur (S): Maximum 0.015%.
4.What is the application of inconel 738 ?
Aerospace Industry: It is used in the manufacture of aircraft engine components, such as turbine blades, discs, and exhaust systems, due to its high - temperature strength and excellent corrosion resistance.
Marine Industry: Inconel 625 is suitable for applications in seawater - exposed environments, such as shipbuilding, offshore platforms, and desalination plants, as it resists corrosion from saltwater and other marine corrosive agents.
Chemical Processing: It is widely used in the chemical industry for equipment handling corrosive chemicals, including reactors, heat exchangers, and pipelines, as it can withstand a variety of chemical corrosions.
Oil and Gas Industry: Inconel 625 is used in downhole equipment, well - head components, and pipelines in the oil and gas extraction and processing, where it needs to resist high - temperature, high - pressure, and corrosive environments.
5.What are the advantages of inconel 738?
Excellent Corrosion Resistance: It has outstanding resistance to a wide range of corrosive media, including acids, alkalis, and salt solutions. Its high nickel, chromium, and molybdenum content provides excellent resistance to pitting, crevice corrosion, and stress - corrosion cracking.
High - Temperature Performance: Inconel 625 maintains good mechanical strength and stability at elevated temperatures. It has a high melting point and low creep rate, enabling it to be used in high - temperature applications without significant deformation or loss of properties.
Good Weldability and Fabricability: It can be easily welded and fabricated using common metalworking techniques, allowing for the production of complex - shaped components required in various industrial applications.
High Strength and Toughness: Inconel 625 offers high strength and good toughness, which are essential for applications where the material needs to withstand high mechanical loads and impacts.
