GB/T 7962.16-2010 Test methods of colourless optical glass.Part 16:Linear thermal expansion coefficient,transformation temperature and yield point temperature (English Version)
This part of GB/T 7962 specifies the test methods, test procedures and data processing for the average linear expansion coefficient, transition temperature and sag temperature of colorless optical glass. This part is applicable to the test of average linear expansion coefficient, transition temperature and sag temperature of colorless optical glass.
2011GB/T 7962.16-2010 Test methods of colourless optical glass.Part 16:Linear thermal expansion coefficient,transformation temperature and yield point temperature
1987GB/T 7962.16-1987 Colourless optical glass test methods--Linear thermal expansion coefficient and transformation temperature