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Wasser Terra CottaThin, lightweight and easy to cut, 90 COE Wasser is an ideal glass for beginners and experts alike. Wonderful for fusing, bead work, and even foil applications. specifications General Specifications: Measured "90" Coefficient of Expansion (COE) = 89.7 x 10-1/Co Glass Thickness: 1.6mm (0.063"); Range: 1.5 mm - 1.8 mm (0.059" - 0.07" Glass Weight, nominal: 0.4 gm/cm2 (14 oz/ft2) Sheet Size: Standard glass sheet measure 12 x 12 inches. Firing Temperatures: (~+5ºF and are dependent upon glass color and thickness Softening Point:1240ºF (677ºC) Tack Fuse: 1285ºF (696ºC)Orton std. lg. cone 18 (r/r 108ºF) Full Fuse: 1340ºF (727ºC)Orton std. lg. cone 17 (r/r 108ºF Annealing Temperature: 940ºF (482ºC) Shrinkage Initiation Point:1360ºF (738ºC) Balling Formation Starts: 1450ºF (788ºC) Glass Lost / Shelf Intrusion: 1550ºF (843ºC) Note: Recommended minimum soak time at full fuse temperature: 30 minutes Recommended minimum soak time at annealing temperature: 30 minutes After annealing: suggested cooling rate is 10º/min to 800º(472º), 15º/min to 700º(371ºC)and < 20º/min. to room temperature. |
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