The advantages of stainless steel turned parts mainly lie in the combination of its material properties and machinability. Although stainless steel itself presents challenges in machining (such as work hardening and poor thermal conductivity), it still possesses several significant advantages as a material for turned parts:
Excellent corrosion resistance: Stainless steel (especially austenitic stainless steels such as 304 and 316) can form a dense chromium oxide film on its surface, remaining stable in humid, acidic, alkaline, or marine environments. Suitable for applications requiring high corrosion resistance, such as food machinery, chemical equipment, and medical devices.
High material utilization: Hollow tubing or near-net-shape forming processes can be used to reduce waste, especially in mass production, reducing costs.
Good high-temperature stability: Maintains strength and oxidation resistance at high temperatures (e.g., 500–800°C), suitable for high-temperature environments such as engine exhaust systems and turbine blades.
Controllable surface quality: By optimizing cutting parameters (e.g., using internal cooling, specialized tools), Ra... Surface roughness of 0.8μm or even better meets the appearance and functional requirements of precision parts (such as medical devices and optical components).
Good mechanical properties: It possesses high strength, toughness, and wear resistance. Some types (such as martensitic 420 and precipitation hardening 17-4PH) can have their hardness and strength further enhanced through heat treatment, making them suitable for manufacturing load-bearing parts such as shafts, gears, and valves.
