51CrV4: A cost-effective chromium-vanadium alloy steel offering high tensile strength, fatigue resistance, and moderate corrosion resistance. Commonly used in automotive, industrial machinery, and clamping systems but requires surface treatments in corrosive environments.17–7PH: Precipitation-hardened stainless steel known for excellent corrosion resistance, high strength, and fatigue resistance. Used in aerospace, defense, and marine applications due to its ability to perform in harsh and high-temperature conditions.SUS 304: Austenitic stainless steel with outstanding corrosion resistance and good formability. Suitable for food processing, medical applications, and low-load systems where durability in moist or sanitary environments is critical.Inconel 718: A nickel-chromium super-alloywith exceptional strength, heat, and corrosion resistance. Ideal for extreme environments like aerospace engines, turbines, and oil and gas equipment.Key Considerations:- Load Capacity: Inconel 718 and 17–7 PH are suited for high-stress systems, while 51CrV4 and X10CrNi18–8 work in less demanding scenarios.- Corrosion Resistance: X10CrNi18–8 and Inconel 718 excel in corrosive environments; 51CrV4 is less resistant unless treated.- Temperature Resistance: Inconel 718 leads for high-temperature applications; 17–7 PH is suitable for moderate temperatures.- Fatigue Life: Cyclic applications require Inconel 718 or 17–7 PH for durability.The selection of material depends on the environmental and mechanical demands of the application to ensure performance, longevity, and reliability.