SUS416: Machinability and Final Heat Treatment

SUS416 is a free-machining martensitic stainless grade. Material reference.

Machinability and Final Heat Treatment

For a turned shaft, investigate whether machining productivity is compatible with the required joining, toughness and corrosion behaviour. A substitution from SUS410 should address those requirements explicitly rather than relying on the similarity of the grade numbers.

Manufacturing and acceptance checks

Ask for stock condition, chemistry traceability and the complete final treatment callout. Put key fits and straightness checks after hardening and finishing. Identify any weld operation before material approval, and define the surface condition and inspection required at seal tracks, threads and load transitions.

Compare related options

• SUS410
• SUS303

Reference and scope

Daido: JIS stainless grade identities and chemistry provides material or specification background. The checks above are purchasing guidance; final acceptance values must come from the agreed grade, product specification and condition.

Send a drawing and material requirements for review. Include quantity, critical dimensions and the inspection evidence required with delivery.