Kappa DS

Test load

50 - 250 kN

Temperature range

-80 to +2000°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

Description Advantages and features Technical overview High-temperature accessories Downloads Request a consultation

Kappa DS: the specialist for various environmental conditions

The flexible electromechanical creep testing machine Kappa DS is equipped with a double lead screw and was designed for classic and advanced creep tests. The large crosshead travel and the associated extended test area provide sufficient space for temperature, vacuum or inert gas chambers for example, making this testing machine ideal for tests under various environmental conditions.

The Kappa DS 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
Tensile, compression and flexure tests can also be performed with this testing machine

Creep Test

The Kappa DS in operation

By playing this video, you agree to the use of cookies as well as to the transfer of data to YouTube in the USA. You can revoke or change your consent at any time in the footer under “Cookies”. Additional data privacy notices.

Isothermal stress relaxation test on steel strands

The Kappa 400 DS is ideal for isothermal stress relaxation tests on steel strands to ISO 15630-3, chapter 9.

Creep tests on aluminum specimens

Hydro Aluminium uses a Kappa 50 DS with temperature chamber up to +250°C for creep and stress relaxation tests.

Advantages and features

Specific machine design

Load frame with dual lead screw drive and precision guidance via four steel columns for precise axial loading
Dual lead screw drive
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

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%)

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

Technical overview

Test load F_max	50	kN
Test area
Height	1350 ¹	mm
Width	610 ²	mm
Load frame
Dimensions
Height	2342	mm
Width	933	mm
Width with machine electronics	1157	mm
Depth	730	mm
Weight
With machine electronics, approx.	840	kg
Drive
Crosshead speed v_min ... v_max	1 ... 100	µm/h ... mm/min
Deviation from the set drive speed, max.	± 0.1³	% of v_actual
Drive system travel resolution	0.068	nm
Crosshead return speed, max.	100	mm/min
Power input specifications
Supply voltage	230	VAC
Power consumption (full load), approx.	2.3	kVA

Maximum distance from the moving crosshead to the height-adjustable crosshead or base crosshead, without any accessories
Clearance between the lead screws
Measured over an interval of at least 5 s or 10 mm travel

Test load F_max	100	kN
Test area
Height	1350 ¹	mm
Width	610 ²	mm
Load frame
Dimensions
Height	2342	mm
Width	933	mm
Width with machine electronics	1157	mm
Depth	730	mm
Weight
With machine electronics, approx.	840	kg
Drive
Crosshead speed v_min ... v_max	1 ... 100	µm/h ... mm/min
Deviation from the set drive speed, max.	± 0.1³	% of v_actual
Drive system travel resolution	0.068	nm
Crosshead return speed, max.	100	mm/min
Power input specifications
Supply voltage	230	VAC
Power consumption (full load), approx.	2.3	kVA

Maximum distance from the moving crosshead to the height-adjustable crosshead or base crosshead, without any accessories
Clearance between the lead screws
Measured over an interval of at least 5 s or 10 mm travel

Test load F_max	150	kN
Test area
Height	1350 ¹	mm
Width	617 ²	mm
Load frame
Dimensions
Height	2431	mm
Width	922	mm
Width with machine electronics	1158	mm
Depth	730	mm
Weight
With machine electronics, approx.	1120	kg
Drive
Crosshead speed v_min ... v_max	1 ... 100	µm/h ... mm/min
Deviation from the set drive speed, max.	± 0.1³	% of v_actual
Drive system travel resolution	0.068	nm
Crosshead return speed, max.	100	mm/min
Power input specifications
Supply voltage	230	VAC
Power consumption (full load), approx.	2.3	kVA

Maximum distance from the moving crosshead to the height-adjustable crosshead or base crosshead, without any accessories
Clearance between the lead screws
Measured over an interval of at least 5 s or 10 mm travel

Test load F_max	250	kN
Test area
Height	1350 ¹	mm
Width	617 ²	mm
Load frame
Dimensions
Height	2431	mm
Width	922	mm
Width with machine electronics	1158	mm
Depth	730	mm
Weight
With machine electronics, approx.	1120	kg
Drive
Crosshead speed v_min ... v_max	1 ... 100	µm/h ... mm/min
Deviation from the set drive speed, max.	± 0.1³	% of v_actual
Drive system travel resolution	0.068	nm
Crosshead return speed, max.	100	mm/min
Power input specifications
Supply voltage	230	VAC
Power consumption (full load), approx.	2.3	kVA

Maximum distance from the moving crosshead to the height-adjustable crosshead or base crosshead, without any accessories
Clearance between the lead screws
Measured over an interval of at least 5 s or 10 mm travel

We will find the optimal solution for your creep test application. Please feel free to contact our experts.

We will be happy to discuss your needs.

Modular high-temperature accessories for creep testing machines

Accurate creep tests under defined temperature and environmental conditions is crucial for reliably determining the temperature-dependent elastic behavior, strength and yield point of high-temperature resistant materials. ZwickRoell equips creep testing machines with a wide range of modular high-temperature accessories, designed for testing in temperatures ranging from -80°C to 2,000°C.

The optimal combination of heating system, precise temperature control, suitable thermocouples, load strings and coordinated extensometers is the basis for reliable test results in creep testing.

Heating systems for test temperatures up to +2,000°C

A wide range of heating systems is available for creep testing systems to meet various standards and customer requirements. Get an overview of the possible alternatives:

	Temperature	Environment	Advantages
Temperature chamber	Up to +360°C	Air	Precise temperature conditioning of the specimen is achieved through sophisticated air-feed systems and precise control Flexible in use: The large volume of the chamber provides space for a variety of applications Optimal integration of optical and sensor arm extensometers
High-temperature furnace with 1, 2 or 3 heating zones	Up to +1,200°C Up to +1,400°C Up to +1,600°C	Air	Precise temperature distribution through individually controllable heating zones, with no overshooting Maximum flexibility through various slot opening sizes for thermocouples, extensometers and load string Optimal integration of optical and sensor arm extensometers Can be retrofitted
Induction heating system	Up to +1,200°C Higher temperatures are available upon request.	Air Vacuum Inert gas	Fast heating and cooling rates Individually adjustable heating power Optimized temperature distribution through specimen-specific inductors
Vacuum chamber	From +650°C Up to +2,000°C	Vacuum Inert gas	Wide application range at ultra-high temperatures Choice between vacuum and inert gas environment Precise strain measurement with optical or sensor arm extensometer up to maximum test temperature

High-temperature heating systems for Kappa DS

Optical extensometer

The differentiating advantage of extensometers featuring non-contact measurement is that they can be used right up to break without risk of damage, even with specimens that are critical in this respect. Especially in an elevated temperature range, non-contact extensometers provide a defining advantage over contact extensometers, since the access to different heating systems can be sealed with view windows.

Applications for the video extensometer for high temperatures:

Long-term applications, tensile, compression and flexure tests, cyclic applications (< 2 Hz)
A variety of materials such as metals, refractory materials, ceramics
Temperature range: ambient temperature up to +1,400 °C

To videoXtens 1-32 HP/TZ

Contact extensometers

Contact extensometers for creep testing are available for tensile as well as compression and flexure tests. In addition to different accuracy classes and measurement ranges, extensometers for extended temperature ranges are also available. A distinction is made between side- and axial-attaching extensometers, which are suitable for special test types such as crack propagation testing. Depending on the specimen shape, different sensor arms are used.

Our engineers are happy to help you select the optimal system for your creep testing machine from our extensive portfolio of extensometers.

Contact-type extensometer

Contact extensometer for creep testing machine

Downloads

Product Information: Kappa DS PDF 375 KB
- DE
- EN

Interesting customer projects

Other customers using ZwickRoell creep testing systems

IMA Dresden, Germany

The accredited testing service provider is expanding its metal testing capacity - hydrogen embrittlement tests in accordance with ASTM F519 are carried out simultaneously on up to 15 specimens of ultra-high-strength steel on the Kappa 100 DS.

OGMA, Portugal

OGMA - Indústria Aeronáutica de Portugal S.A. uses two Kappa 50 DS to determine the mechanical hydrogen embrittlement of aerospace components in accordance with ASTM F519.

SC Rondocarton SRL, Romania

The corrugated board plant in Apahida-Cluj produces high-quality corrugated board packaging and carries out box compression tests on a Kappa 50 DS (max: 1200x800x1800 mm, WxDxH). The long-term creep resistance under constant load can also be tested. - Adrian Popa, Quality Manager