S-gives practical methods of annealing for various glasses and quotes the following range of annealing temperatures: lead glasses 410o to 440o, soft optical glass 490o to 510o, hard optical glass 510o to 530o, pannel glass 510o to 540o illuminating glass 500o to 540o borosilicate glasses 520o to 570o and supermax 720o to 730oC. 2 figs
Origin
Unknown
Journal Title
Szklo I Ceram., 2 5 1951 112-113
Sector
Primary Papers
Class
PP 1499