Metal Tests

Our laboratory offers a wide range of tests of metallic materials that help verify their mechanical properties, quality and suitability for a specific use. Thanks to modern methods and a precise approach, we deliver reliable results for both industrial and research purposes. Below you’ll find an overview of the main types of tests we perform.

Over 30 years of experiencein the supply & service of testing technology
Warranty & post-warranty servicefor our own and competitors' equipment
Training of your employeesto increase their expertise
Accredited laboratoriesfor external tests and calibrations

Metal hardness tests

We measure the hardness of metals using the Brinell (HBW), Vickers (HV), Knoop (HK) and Rockwell (HRC, HRB, etc.) methods. Each method is suited to a different type of material and hardness range. The results provide important information about the material's resistance to wear, deformation and other mechanical influences.

Strength and ductility tests

We perform tensile tests that determine the strength characteristics of a material – such as the yield strength, tensile strength and elongation. These values are key to assessing how a material behaves under load and its capacity for deformation before failure.

Sample preparation for structural evaluation

We provide expert preparation of samples for the subsequent evaluation of metal structure. A correctly prepared sample is the basis for a quality analysis – it reveals the internal arrangement of the material, transition zones or any defects.

Microscopic evaluation and layer-thickness measurement

Using light microscopy we carry out evaluation of metal structure and measurement of layer thickness, such as surface treatments, hardened layers or protective coatings. These analyses serve to verify the quality of technological processes and the service life of materials.

We'll be happy to advise you.

Ing. Radek Lovětínský

Head of the testing laboratory

+420 602 287 214Mon–Fri: 9:00–16:00 zkusebna@jddvorak.czI'll reply within 24 hours

What We Test for You

Our laboratory offers comprehensive testing of metallic materials, covering the evaluation of mechanical properties, microstructure and the quality of surface layers. We carry out the tests to international standards, and the results serve for quality control, the development of new materials and the verification of technological processes. We focus both on basic characteristics and on specific applications, including measuring the hardness of welds, the hardness of hardened layers and hardness mapping.

Weld hardness measurement

When measuring weld hardness by the Vickers method, three main areas are evaluated: the weld metal, i.e. the weld itself; the heat-affected zone, which was affected by the heat of welding; and the base material, which remained outside the reach of the heat. HERE.

Measuring case-hardening depth

The case-hardening depth is determined by measuring microhardness from the surface towards the core of the material. The case-hardening depth is taken as the distance from the surface to the point where the hardness drops below a defined limit, for example 550 HV.

Mapping hardness distribution across an area

Hardness mapping involves distributing measurement points across the surface of the material to visualise the hardness distribution. It is used to analyse changes in mechanical properties after heat or other treatment.

Which Standards We Test To

In our laboratory we test metallic materials to international standards, which include hardness measurement by the Brinell, Vickers, Rockwell and Knoop methods, tensile and bending tests to assess mechanical properties, microscopic evaluation of surface-layer thickness and determination of surface-hardened layer thickness. These standardised procedures let us evaluate the quality, durability and suitability of materials for technical and industrial use accurately and reliably.

Standards

ČSN EN ISO 6506 Brinell hardness test
ČSN EN ISO 6507 Vickers hardness test
ČSN EN ISO 6508 Rockwell hardness test
ČSN EN ISO 4545 Knoop hardness test
ČSN EN ISO 9015-1 Destructive tests on welds in metallic materials – Hardness testing
ČSN EN ISO 1463 Metallic and oxide coatings – Measurement of coating thickness – Microscopical method
ČSN EN ISO 6892 Metallic materials – Tensile testing
ČSN EN ISO 7438 Metallic materials – Bend test
ČSN EN ISO 18203 Steel – Determination of the thickness of surface-hardened layers

1
Non-binding inquiry

Tell us your testing requirements (e.g. via the inquiry form, email or phone).
2
Consultation & requirements specification

We contact you and clarify the test specification and timeline.
3
Price quotation

You receive a structured price quotation from us.
4
Ordering

After your order we reserve the date and capacity.
5
Delivery of samples

You deliver the samples to us in person or by courier.
6
Performing the test

We carry out the test on the reserved date.
7
Preparing the test report

After the test we send the test report electronically.
8
Follow-up support

We'll gladly go through the test results with you.

„The testing chamber, and the staff's approach and willingness beyond requirements — I can only recommend them.“

Tomáš Matús Google review

„JD Dvořák — a company where the impossible does not exist and where it is not only about work. I am glad to have the honour of working with JD Dvořák.“

Libor Pala TRL Space Systems s.r.o.

„We have worked with JD Dvořák for a long time in testing, the rental of climatic chambers, and the service and calibration of our equipment. We value the helpfulness and professionalism of the department heads and technicians we are in regular contact with during tests and the work carried out. Our technicians also make use of training in various areas of testing, which provides both an expansion of theoretical knowledge and practical demonstrations.“

Jiri Turek Google review

„What I greatly appreciate is the personal approach to solving every problem. Whether it concerned specific testing requirements or the need for individual consultation, I was always met with willingness and expert help that led to a smooth and efficient collaboration. For me, JD Dvořák is not only a professional company, but also an excellent partner in research and education.“

Ing. Veronika Steinerová Kloknerův ústav, ČVUT LinkedIn

„We have worked with JD Dvořák since 2020. Since then we have completed several installations together, and throughout they have provided service and the necessary calibrations, always at the highest professional level. They have also helped us with our special requirements and we can always rely on them. Their approach is not only professional and customer-oriented, but also very human, and the cooperation is always pleasant.“

Jan Špaček Fresenius Kabi Horatev CZ s.r.o.

„Cooperation with JD Dvořák is at an excellent level, as proven by more than 20 years of trouble-free collaboration.“

Libor Šmíd TÜV SÜD Czech s.r.o.

„You do good work — thank you for the long-term cooperation.“

Ing. Ivan Vavrík Bel Power Solutions s.r.o.

„Thank you for the professional cooperation so far. You are a very reliable partner for us.“

Ing. Miloslav Mensinger Škoda Auto a.s.

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Test report

This document contains key information about the tested sample and the course of the test. We provide the report in Czech or English according to your needs.

We issue both an accredited and a non-accredited test report according to customer requirements. The type of report is determined by the chosen testing standard.

Expertise in the field

Not sure how to test your sample? We'll help. We have years of experience and will recommend the most suitable procedure. And if you already know exactly what you want, we'll be your partner — without unnecessary questions.

Flexibility

Our equipment covers most requirements. If something is missing, thanks to our links with manufacturers of testing technology we can often arrange even specialised equipment outside our laboratory.

Reliability & speed

You can rely on both the equipment and our arrangements. We service and calibrate everything ourselves, so we can react quickly and adapt tests to get you results as soon as possible.