Question:

Why do I receive the flange notification "NOTE: Suitable low temperature bolting material is required?" What does it mean?

Answer:

COMPRESS rates each component for its coldest possible MDMT per UCS-66, UHA-51, etc. Standard ASME B16.5 and B16.47 flanges are rated in this same manner. If the resulting temperature is below -20°, the alert is displayed indicating the flange rated temperatures are valid only if "low temperature" bolting material is used as defined in Note 10 to Table 1B of these standards.

This alert is meant to notify the user for informational purposes only. It is not meant to indicate violation of any requirements. It is up to the designer to make sure requirements are satisfied.