JIS G4304 / G4312 SUS 416 Stainless Steel Composition & Free‑Machining Martensitic Properties
SUS 416 is one of the most free‑machining stainless steels defined in JIS G4304 / G4312. Enhanced with sulfur, it provides excellent machinability for turning, drilling, and threading while maintaining heat‑treatable strength.
Although its corrosion resistance is slightly lower than SUS 410, 416 excels in automatic machining and precision component production. It is widely used for bolts, nuts, gears, shafts, valve components, and electronic hardware. SUS 416 is supplied mainly as bars, wires, and selected plate forms. It is ideal for machining‑intensive applications requiring strength and moderate corrosion resistance.
Although its corrosion resistance is slightly lower than SUS 410, 416 excels in automatic machining and precision component production. It is widely used for bolts, nuts, gears, shafts, valve components, and electronic hardware. SUS 416 is supplied mainly as bars, wires, and selected plate forms. It is ideal for machining‑intensive applications requiring strength and moderate corrosion resistance.