Glass-ceramic: SCHOTT NEXTREMA® mechanical properties (at room temperature)

High intrinsic mechanical strength – even at high temperatures

NEXTREMA® boasts a very high degree of mechanical strength for a ceramic material and does not require any additional toughening processes. The glass-ceramic exhibits extraordinary mechanical stability even at high temperatures. Hard, elastic and temperature resistant: with its high degree of hardness NEXTREMA® is the glass-ceramic of choice where high mechanical resilience and temperature resistance are required in equal measure. The glass-ceramic with the highest benging strength in the NEXTREMA® portfolio can withstand up to 165 megapascals (material type tinted 712-3). Our innovative glass-ceramic is the ideal material for the design-minded. Thanks to the high mechanical resistance of its non-porous surface, NEXTREMA® boasts countless possibilities across all areas of industrial and product design.

Here are further details of the mechanical properties:

ρ approx. 2.5 – 2.6 g/cm3


E approx. 84 – 95 x 10³ MPa

Modulus of elasticity
(ASTM C-1259)

μ approx. 0.25 – 0.26

Poisson‘s ratio
(ASTM C-1259)

HK0.1 / 20 approx. 570 – 600                

Knoop hardness
(ISO 9385)

σbB approx. 100 – 165 MPa

Bending strength
(DIN EN 1288, Part 5, R45)  
Impact resistance      The impact resistance of NEXTREMA® depends on the kind of installation, size,
thickness and geometry of the panel, type of impact and especially on drilled
holes and their position in the material.

Therefore, information regarding impact resistance can only be given with
knowledge of the respective and defined application (especially in combination
with the technical standards regarding impact resistance that have to be met for
some applications). The quality of the grinding profile has an important influence
according to the impact resistance.

0 %

Porosity (ISO 9385)  

Material 724-3 (t = 4 mm)      Ra ≤ 0.20 μm
                                            Rms ≤ 0.25 μm