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Material testing

Material testing

Material testing

Quality inspections, samplings and in-process laboratory evaluations of components according to your specifications (conformity tests); determination of material type, manufacturing process and heat treatment in the case of unknown components; metallographic and roentgenographic assessments of components with a view to their intended use and their behaviour in stress cases; failure analysis for sourcing, error avoidance and component optimisation.

Contact us today to benefit from the knowledge and experience of our materials specialists!

Our services at a glance

RUBIG Materials Engineering offers:


We will be happy to assist you in finding a comprehensive solution that fits your needs.

Our core expertise in materials testing

We offer our expertise and our wealth of experience in the field of material and component characterisation as a service. We perform analysis according to relevant standards and applicable norms as well as special analysis and our core customers appreciate our competent, accurate and nevertheless quick, unbureaucratic and practicable execution when dealing with the following topics:

  • Quality assessment
  • In-process laboratory evaluations
  • Determining and assessing the material type, the manufacturing process and the heat treatment performed in the case of unknown components
  • (Initial) sampling
  • Failure analysis (tears, breaks, wear and tear, corrosion)


Sample preparation and cut production

Parts and components need to be prepared in accordance with different testing and examination methods.

For example, a metallographic cut is required to see the interior of a material and analyse the structure. A sample piece must first be cut out of the workpiece to facilitate structural assessment. For optimum handling and to ensure the required edge definition, the sample piece is typically embedded in plastic and then metallographically prepared (ground, lapped and polished). The microstructure becomes visible by etching the cut with suitable etching solutions.

Hardness Measurements

The removal of a sample piece and cut preparation are also required for assessing hardness depth or for measuring a hardness profile over a weld seam.

The steps for removal and cut preparation for comprehensive examinations and damage analyses are typically documented with photos. This can make it easier to understand specific removal and test positions.

An overview of the materials testing services offered:

  • Determination of the chemical material composition or the material type by means of spark spectroscopy, EDX microanalysis and glow discharge optical emission spectroscopy (GDOES)
  • Checks for material mix-up
  • Surface carbon and surface nitrogen measurements, depth profile analysis
  • Macro, small load and micro hardness testing according to classic procedures (Rockwell, Brinell and Vickers) and with mobile systems
  • Automated hardness profile measurements for determining hardness depths (CHD, NHD, SHD) or for determining hardness increase in the case of weld seams
  • Layer adhesion testing by means of the hardness indentation process
  • Hardness testing according to the instrumented penetration method for thin hard material layers
  • Sample preparation and performance of micro and macro-cuts
  • Light microscopic structural assessments (qualitative and quantitative)
  • Layer thickness measurements by means of calotte cut or on removed and embedded sample pieces
  • Residual austenite determination by means of X-ray diffractometer analysis
  • Residual stress measurements and residual stress profiles by means of X-ray diffractometer analysis
  • Corrosion analysis and corrosion tests (salt spray test, electrochemical corrosion tests, evacuation tests)
  • Failure analysis in the event of tears, breaks, wear and tear and corrosion for damage avoidance and component optimisation Generation of test certificates, well-founded analysis reports and expert failure analysis reports

Sample preparation:

  • Cutting:
    • band saw for very large or bulky parts
    • cutting equipment for wet separation is used for further reduction in size

Cut production and preparation:

  • Microsections:
    • hot-mounted
    • cold-mounted
  • Macrosections:
    • for large sample pieces, with or without cold mounting (task-dependent)
  • Preparation:
    • pregrinding using abrasive paper with different grain sizes
    • lapping
    • polishing
  • Developing the microstructure:
    • classic wet chemical etching
    • electrochemical etching
    • thermal etching


DI Norbert Pirzl

Head of Damage Analysis Department / RCC

Jürgen Lehner

Material Analysis / RCC

Gerald Lehner

Material Analysis / RCC