Optimize Refractory Testing with HMOR 422 D/3 Today!

Modulus of Rupture (MOR) of refractory ceramics up to 1500°C

The modulus of rupture (MOR) is an important variable in the characterization of refractory materials. Determination of the maximum load at high temperatures is a property which, along with other thermophysical properties, is an important parameter for quality control and development of furnace linings.

The modulus of rupture is defined as the maximum StressStress is defined as a level of force applied on a sample with a well-defined cross section. (Stress = force/area). Samples having a circular or rectangular cross section can be compressed or stretched. Elastic materials like rubber can be stretched up to 5 to 10 times their original length.stress a rectangular test piece of specific dimensions can withstand in a 3-point bending test until it breaks, expressed in^N/mm2 or MPa.

The International Standard Test Method is described in ISO 5013; test piece dimensions: 150 mm x 25 mm x 25 mm.

For determination of the modulus of rupture of refractories up to a temperature of 1500°C and a maximum load of 5000 N (60^N/mm2), NETZSCH offers the model 422 D/3. This model is designed for continuous testing with a 3-point bending device.
With optional devices for load and deformation measurement and/or constant deformation rate, additional information about the limits of elasticity and crack propagation in ceramic test pieces can be obtained.

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Technical Data

Heating elements

SiC

Bending measuring range

10000 µm (2500 µm at 422 E/4)

Temperature range

RT to 1500°C

Bending support:
SiC

Load:
1 N to 5000 N
(2.0 to 12.5 N/s, switchable)

Temperature measurement:
type S thermocouples

Sample dimensions:
150 mm x 25 mm x 25 mm

Bending mode:
3-point

Atmospheres:
air, static

Bending test setup showing a refractory ceramic sample under a load in a 3-point bending test for modulus of rupture analysis.

Illustration of NETZSCH HMOR 422 D/3, a three-point bending test device for measuring the modulus of rupture of refractory ceramics at high temperatures.

Diagram illustrating the 3-point bending test setup for measuring the modulus of rupture in refractory ceramics.

Diagram detailing components of a modulus of rupture testing apparatus for refractory ceramics, highlighting measurement tools and functions.

Diagram of a 3-point bending test setup for measuring the modulus of rupture in refractory ceramics, emphasizing precision and load application.

The HMOR 422 D/3 runs under Proteus^® Software on Windows®. The Proteus^® software contains all operations required to carry out measurements and, independent from that, for evaluation of the data, in part in MS EXCEL®. Through the combination of easy-to-understand menus and automated routines, a tool has been created that is extremely user-friendly and, at the same time, allows sophisticated analysis. The Proteus^® software is licensed with the instrument and can of course be installed on other computer systems.

HMOR analysis features:

Start of the load increase, determination of the failure load
Storage of the test parameters and results
Transfer to MS EXCEL® for further analysis, graphic presentation and statistics
Determination of the test piece deformation (with the optional device for measurement of load and deformation)
Load-deformation diagram
Modulus of rupture calculation