Feasible for most injection molding manufacturers without requiring specialized "clean room" or "high-precision" tool-making capabilities. When to Specify ISO 20457 TG5
An example of a proper callout might be:
Note: Always consult the official ISO 20457 lookup tables to extract the exact numerical limits for your specific nominal dimensions and tool configurations. Cost vs. Precision Trade-offs
An automotive Tier 1 supplier switched to a "certified recycled talc-filled PP" for a non-visible bracket. The virgin material had an MFI of 12 g/10min. The recyclate arrived with an MFI of 45 g/10min (measured via standard ISO 1133). The molder assumed extreme degradation and scrapped the batch.
Some materials, like Nylon, require moisture conditioning before final measurement.
