| 11. | Soda-lime glass is relatively inexpensive, chemically stable, reasonably hard, and extremely workable.
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| 12. | Pyrex glass cookware manufactured by World Kitchen is made of tempered soda-lime glass instead of borosilicate.
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| 13. | Obsidian still has about the same SiO2 content as normal soda-lime glass, ~ 75 %.
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| 14. | The resulting glass contains about 70 to 74 % silica by weight and is called a soda-lime glass.
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| 15. | For instance, quartz has very low thermal expansion, while soda-lime glass has very high thermal expansion.
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| 16. | Silicates are also in whiteware ceramics such as porcelain, and in traditional quartz-based soda-lime glass.
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| 17. | However, depending on the application, soda-lime glass substrates of similar thicknesses are also used in OLED fabrication.
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| 18. | It is also less likely to crack while working with it in making pieces of variable thickness than is soda-lime glass.
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| 19. | Silicates are used in whiteware ceramics such as porcelain, and in traditional quartz-based soda-lime glass and many other specialty glasses.
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| 20. | Pyrex sold in the United States is made of tempered soda-lime glass; outside of North America the costlier borosilicate is still used.
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