Kappa SS

Test load

50 - 100 kN

Temperature range

-80 to +2,000°C

Type of test

Creep
Stress Relax
SSRT, HE
CCG
Tensile
Compression
Flexure

Standards

ISO 204
ASTM E139
EN 2002-005
ASTM E1457
ASTM G129
ASTM F519

This creep testing machine meets the highest requirements on precise axial alignment

The Kappa SS creep-testing machine is equipped with a central lead screw and is suitable for classic and advanced creep tests that require maximum precision in force control and axial alignment.

The Kappa SS electromechanical creep testing machine offers a wide range of applications in ambient and high-temperature conditions:

Advanced creep tests
- Fatigue tests in the tensile range
- Strain modeling (e.g. determination of creep curve at different loads)
- Creep test with slow strain rates (SSRT)
- Creep data from components tests
Crack growth and widening tests
Determination of hydrogen embrittlement
Tests with stepless force and temperature adjustment
Relaxation tests
Creep tests up to break
- Creep rupture
- Stress rupture
Classic creep tests
Short-term tensile, compression and flexure tests can also be performed with this testing machine

Advantages & features

Specific machine design

Load frame with central lead screw drive and precision guidance via four steel columns for precise axial loading
Central lead screw for precise axial alignment
High drive control frequency of 1000 Hz. This allows for precise force and strain control for a wide range of applications.
High-resolution force and travel measurement for optimum control properties, especially at very low test speeds
Precise loading rate with tolerance of ± 0.1 % of the set speed in the measurement range of 1 μm/h to nominal speed, unloaded or under constant load
Wide force measurement range for tests with small and large forces according to DIN EN ISO 7500-1 in class 0.5 and class 1
Precision testing machine to DIN EN ISO 7500-1

Axial alignment

Central lead screw for precise axial alignment to ASTM E292
Load string with optimal alignment properties in accordance with ASTM E1012
Spherical mounting ensures self-adjusting alignment in tensile tests and low, standard-compliant flexural stress (± 10%)

Precise specimen temperature

High-temperature furnace, temperature chamber or induction heating system – selection based on test temperature of type of test
One, two or three specimen thermocouples – dependent on the specimen length
Automatic and specimen-centered entrainment of the thermocouples and the furnace – also in case of long elongations and long test duration
Operator-independent temperature control with automated adaptation of the control parameter for influencing factors such as
- Heating rates and target temperature
- Specimen size, material and shape
- Number of thermocouples
Guaranteed uniform temperature distribution along the specimen
No overshooting of the specimen temperature upon reaching the target temperature
Empirical determination of the control parameters for individual temperatures is no longer necessary
Wide temperature range with tolerances better than ISO 204 and ASTM E139:
200°C to 400°C: ± 2 K
400°C to 1,150°C: ± 1 K

Intelligent electronics and software

Consistent workflow orientation reduces training needs to a minimum
Strain and force controlled load application (stepless/in blocks)
Selectable digital closed loop force, stress and strain controlled creep tests and stress relaxation tests, as well as user-defined load cycles
Easy operation during test performance and test result evaluation
Integrated temperature control of the high-temperature controller
Temperature control, recording and documentation prior to the test (heating phase)
Well designed data security concept

Optimal extensometer

Reliable strain measurement is based on an extensometer that has been optimally matched to the testing application. Therefore, selection of the right extensometer is crucial and is the basis for repeatable test results. ZwickRoell engineers are available to help you select the right extensometer for your application, eliminating any guesswork in deciding on an optical or contact-type extensometer:

Non-contact extensometer videoXtens
Side-attaching contact-type extensometer:
-makroXtens with high-temperature sensors
- Side entry extensometer
Axial-attaching contact-type extensometer:
- Rod-in-tube extensometer
- 4-rod extensometer
DCPD extensometer for measuring the crack growth

Further details are available here.

Wide range of accessories

The wide selection of machine accessories supports many application possibilities, allowing for testing with one and the same testing machine at ambient temperature, high temperature and ultra-high temperature.

Furnaces with different dimensions and slots
Temperature, vacuum and inert gas chambers
Induction heating systems
Specimen grips and load strings
Contact-type and non-contact extensometers
Safety enclosures
Hot cell solutions

Ready for changes in future technology

Modular design means that the testing system can be converted or retrofitted whenever required. Moreover, testControl II machine electronics are compatible with future-generation ZwickRoell software.

Technical overview

Type	Kappa 50 SS
Item number	MP02698
Test load, max. Fmax	50 kN
Test frame dimensions
Width	860 mm
Depth	655 mm
Height	2512 mm
Test area depth	Unlimited
Test area width between the lead screws	720 mm
Test area height, max.	1390 mm
Crosshead travel	200 mm
Lateral guidance of the moving crosshead via precision bearings on four hard-chromed guide columns	Diameter 40 mm
Test speed range	0.001 mm/h to 250 mm/min
Test speed accuracy	< ± 0.1 % (measured over an interval of at least 5 s or 10 mm travel)
Position transducer travel resolution	0.136 nm
Weight	800 kg

Type	Kappa 100 SS
Item number	MP02699
Test load, max. Fmax	100 kN
Test frame dimensions
Width	860 mm
Depth	655 mm
Height	2512 mm
Test area depth	Unlimited
Test area width between the lead screws	720 mm
Test area height, max.	1390 mm
Crosshead travel	200 mm
Lateral guidance of the moving crosshead via precision bearings on four hard-chromed guide columns	Diameter 40 mm
Test speed range	0,001 mm/h to 250 mm/min
Test speed accuracy	< ± 0.1 % (measured over an interval of at least 5 s or 10 mm travel)
Position transducer travel resolution	0.136 nm
Weight	800 kg