Numerous exceptional physical and chemical properties characterize the alkaline-earth aluminosilicate glass AF37. The specialty glass from SCHOTT is alkali and arsenic-free in synthesis and has high chemical durability. Resulting from the low coefficient of thermal expansion of AF37 glass, it offers a high heat resistivity. It features low shrinkage, which is of great importance to many electronics and display applications. The thin glass material is made by using advanced float glass technology. It profits from all the advantages of this manufacturing process. Therefore, the natural surfaces of AF 37 already show excellent flatness and low micro-roughness. The material can often be utilized without an additional mechanical polishing step, resulting in significant cost savings to the user. AF37 glass has a small thickness tolerance, a good TTV (total thickness variation), and is available even at large dimensions. As a result of its low density, AF37 is relatively lightweight, which is a significant advantage for display applications. For further information, please contact us.
To request windows or substrates made of our AF 37 arsenic-free glass at a custom size, please click the button below.
The production of AF37 was discontinued shortly after its market launch. Unfortunately, this material is no longer available. You can find alkali-free alternatives above under the headline "Related glass types".
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Medium | 5 % NaOH 1,3 mol/l |
10 % NH4F:HF 1,8 mol/l |
5 % HCL 1,4 mol/l |
Dl H20 |
Temp (°C) | 95 | 23 | 95 | 95 |
Reaction time | 6 h | 20 min | 24 h | 24 h |
Weight loss (mg/cm2) |
1,3 | 0,68 | 0,44 | < 0,01 |
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