The high-temperature resistance and wettability of three nitride substrates (AlN, BN, and Si₃N₄) were systematically compared with graphite substrate. Experimental results showed that BN substrates exhibited comparable non-wetting behavior to graphite under nitrogen protection in a 1 200 ℃ air atmosphere., with a contact angle of 148.0°, which was higher than that of graphite (135.9°). Surface tension measurements revealed that the surface tension values of E-glass melt measured using BN substrates in air atmosphere ranged from 321.4 to 322.4 mN/m, which were 4.3～4.4 mN/m lower than those obtained with graphite substrates under nitrogen atmosphere. Therefore, BN substrates can replace graphite materials for surface tension testing of glass melts under non-protective atmospheric conditions, providing a novel solution for high-temperature glass melt property characterization.