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Vycor is the brand name of Corning's high-silica, high-temperature glass. It provides very high thermal shock resistance. Vycor is approximately 96% silica and 4% boron trioxide, but unlike pure fused silica, it can be readily manufactured in a variety of shapes. [citation needed] Vycor can be subject to prolonged usage at 900 °C. [1]
Ultra low expansion glass has an coefficient of thermal expansion of about 10 −8 /K at 5–35 °C. [2] It has a thermal conductivity of 1.31 W/(m·°C), thermal diffusion of 0.0079 cm 2 /s, a mean specific heat of 767 J/(kg·°C), a strain point of 890 °C [1634 °F], and an estimated softening point of 1490 °C [2714 °F], an annealing point ...
Guitar slide made of borosilicate glass. Borosilicate glass is a type of glass with silica and boron trioxide as the main glass-forming constituents. Borosilicate glasses are known for having very low coefficients of thermal expansion (≈3 × 10 −6 K −1 at 20 °C), making them more resistant to thermal shock than any other common glass.
A sealed capillary, open end pointing down, is placed in the fusion tube. The Thiele tube is heated; dissolved gases evolve from the sample first. Once the sample starts to boil, heating is stopped, and the temperature starts to fall. The temperature at which the liquid sample is sucked into the sealed capillary is the boiling point of the sample.
Deformation point (Glass deforms under its own weight on the μm-scale within a few hours.) 11–12.3 12–13.3 Glass transition temperature, T g: 12 13 Annealing point (Stress is relieved within several minutes.) 13.5 14.5 Strain point (Stress is relieved within several hours.)
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60–69 – Pencil tubes – sub-miniature all-glass tubes, wire-ended (inline fly-leads in place of pins) —Before the 1950s: 60–64 – All-glass tubes fitted with 9-pin Loctal (B9G) bases; 70–79 – Pencil tubes with circular pins or fly-leads —Before the 1950s: 70–79 – 8-pin Loctal (Lorenz) 80–89 – Noval B9A (9-pin; IEC 67-I-12a)
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