Marine cast components are typically selected for applications where corrosion resistance, dimensional stability, and long service life are important. Pump casings, impellers, valve bodies, and other seawater-handling components are exposed to chlorides, moisture, vibration, and varying operating temperatures, making alloy selection an important part of the design process. Common materials include CF8M and CF3M stainless steels for general marine service, duplex and super duplex stainless steels where higher corrosion resistance is required, and nickel aluminium bronze for components that require a combination of corrosion resistance, strength, and wear performance. The final properties of these castings depend not only on the alloy but also on factors such as melting practice, mould design, pouring control, heat treatment, and final machining. For marine and offshore applications, Sharma Technocast manufactures custom cast components using sand casting and investment casting, with support for pattern development, CNC machining, heat treatment, and inspection according to project requirements.