Gray soda lime silicate glass composition for grading production

摘要

This invention regards the gray soda lime silicate glass composition. When this gray soda lime silicate glass composition included the below-mentioned colorant in the below-mentioned weight content ratio, the weight ratio of NiO/CoO was 3.5, - 6 at the same time measuring in the origin of the illuminant D₆₅ concerning the thickness of 6mm, 20% - 60% entire optical transmission (TL _D65) it features that it possesses: 0.01 - 0.14% Fe₂ O₃ (whole iron), CoO 40 - 150ppm, and NiO 200 - 700ppm. In addition, it is produced by the glass composition of this invention, at the same time depending upon when the glass seat which is strengthened, concerning grading and the grading for the especially building which at least possess 1 these glass seats, it discloses.