Disclosed is a lead-free low softening point glass whose composition lies
within the system SnO—P2O5 and containing over 5 to
30 mol % of MnO. The addition of MnO allows the water resistance and coefficient
of thermal expansion of the glass to be improved without spoiling its feature of
a low softening point. The lead-free low softening point glass can be prepared
through a simplified production process.
