Friday, 13 November 2009

Approximate Temperature Characteristics of Various Glasses

Various glasses have different temperature characteristics. This listing is an attempt to indicate the differences between a variety of popular glasses used in kiln forming. They are not necessarily exact, but do give an indication of differences.

Bullseye Transparents
Full fusing 832C
Tack fusing 777C
Softening 677C
Annealing 532C
Strain point 493C

Bullseye OpalescentsFull fusing 843C
Tack fusing 788C
Softening 688C
Annealing 502C
Strain point 463C

Bullseye Gold Bearing Glasses
Full fusing 788C
Tack fusing 732C
Softening 632C
Annealing 472C
Strain point 438C

Desag GNA
Full fusing 857C
Tack fusing 802C
Softening 718C
Annealing 530C
Strain point 454C

Float Glass
Full fusing 835C
Tack fusing 760C
Softening 720C
Annealing 530C
Strain point 454C

SpectrumFull fusing 788C
Tack fusing 718C
Softening 677C
Annealing 510C
Strain point 371C

Uroboros
Full fusing 788C
Tack fusing 732C
Softening 633C
Annealing 538C
Strain point 427C

WasserFull fusing 816C
Tack fusing 760C
Softening 670C
Annealing 510C
Strain point 343C