Hubble Space Telescope STIS observations of the \ion B3 resonance line at 2066 Å have been obtained and analyzed for two Small Magellanic Cloud ( SMC ) B-type stars .
While boron is not detected in either star , upper limits to the boron abundance are set , with 12+log ( B/H ) \leq 1.6 for both AV 304 and NGC 346-637 .
The upper limits are consistent with the relationship between boron and oxygen previously reported for Galactic disk stars .
The SMC upper limits are discussed in light of that galaxy ’ s star formation history , present oxygen abundance , and its present cosmic ray flux .

The UV spectrum has also been used to determine the iron-group abundances in the SMC stars .
For AV 304 , [ Fe/H ] = - 0.6 \pm 0.2 , from both an absolute and a differential analysis ( with respect to the Galactic B-type star HD 36591 ) .
This is consistent with results from A-F supergiants in the SMC .
A lower iron abundance is found for NGC 346-637 , [ Fe/H ] = - 1.0 \pm 0.3 , but this is in good agreement with the supergiant iron abundances in NGC 330 , another young SMC cluster .
We propose NGC 346-637 may be an unrecognized binary though , which complicates its spectral analysis .