Touch Appearance

Strengthening Process.

Increase Toughness, Control Fractures.

We make use of different strengthening processes in order to adapt glass, as a versatile, high-tech material, to its respective intended use.

Thermal tempering: Semi-tempered glass (STG)

STG is exposed to a thermal tempering process just like TSG. However, the cooling process is slower, which results in less of a tension difference in the glass between the center and the surface. The resistance to bending lies somewhere between that of standard float glass and tempered safety glass. If broken, the resulting pieces resemble those of normal, non-hardened float glass.

Properties of tempered glasses


Properties FLOAT Glass Untreated TSG Tempered Safety Glass STG Semi Tempered Glass CSG Chemically Strength­ened Glass
Stone impact resistance No change No change No change ~ +40 %
Flexural strength ~ 45 N/mm² ~ 120 N/mm² ~ 70 N/mm² > 150 N/mm²
Tempera­ture shock resistance ~ 40 K ~ 150 K ~ 100 K > 200 K
Cutting capability Yes No No Conditional
Appearance of fracture Splitting Friable structure Splitting Splitting
  Missing media. Missing media. Missing media. Missing media.

Contact our specialists

Please choose our contact partner, contact us directly using our contact form or let us call you back.

Technical Glass and Touch Modules
Miranda Stender
Fon +49 791 93295-83
miranda.stender [at]
Technical Glass and Touch Modules
Fabian Schmidt
Fon +49 791 93295-82 [at]
Technical Glass and Touch Modules
Vera Hopfenziz
Fon +49 791 93295-26
vera.hopfenziz [at]

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Data sheet - Chemical Strengthening
Data sheet

Chemical Strengthening

application/pdf (85 KB)

Data sheet - Thermal Tempering
Data sheet

Thermal Tempering

application/pdf (292 KB)