Medical-grade polycarbonate selection should begin with sterilization reality, not just room-temperature mechanical data. Exposure method, cycle count, and geometry all influence retained performance.
Method-Specific Material Behavior
Gamma, EtO, and steam cycles affect polycarbonate differently. Discoloration tendency, molecular integrity, and dimensional drift must be validated per method.
The same grade may perform well under one protocol and degrade under another, especially under repeated-cycle use cases.
Critical Validation Parameters
Evaluate optical retention, impact resistance, stress cracking risk, and fit-function tolerances after representative sterilization exposure.
Include assembly-level testing because molded part geometry and residual stress distribution strongly affect results.
Documentation and Regulatory Readiness
Maintain lot-level traceability, change-control visibility, and biocompatibility references aligned with your quality system requirements.
Supplier consistency and version-controlled technical data reduce re-validation cycles during scale-up or transfer.