Hardness testing for industry 4.0:
Get more information about your material during one test
Is the material suitable? Does the treatment achieve the desired results? Only if you know the characteristic values of your materials, a sustainable quality assurance is possible. One of the most important tests is the hardness test. However, conventional methods of hardness testing have their limits: Only the hardness can be determined and for more detailed statements about the material a tensile testing machine must be used in most cases to destroy the samples.
This is where the innovation of Imprintec comes in: The combination of proven testing technology and the latest findings in materials testing enables more comprehensive statements to be made across materials than with conventional hardness testing.
Make your company fit for industry 4.0: The innovative hardness testing from Imprintec provides you with all the important key data about your materials quickly and automatically!
More than just a hardness test: With the patented and standardised imprint process according to DIN SPEC 4864 from Imprintec, you obtain characteristic values such as the tensile strength Rm and the 0.2% proof stress Rp0.2 in one step.</We would be pleased to inform you about this new form of quality assurance and product optimization: Contact our specialists by e-mail, contact form or by phone at 0234/ 970 414 02 – we will be pleased to advise you!
How does conventional hardness testing work?
A hard body is pressed into the sample surface and the hardness is determined. With the help of a conversion table for hardness values and tensile strength, the tensile strength of some materials can still be estimated.
The most common methods for hardness testing are:
- Rockwell: The hardness test according to Rockwell (DIN EN ISO 6508-1) is particularly common because it can be carried out quickly and gives immediately readable results. The sample is loaded with a diamond cone or a tungsten carbide ball and the difference in penetration depth before and after the main loading is determined. A Rockwell hardness tester is well suited for large samples.
- Vickers: The Vickers hardness test (DIN EN ISO 6507-1) is particularly suitable for testing small and thin specimens. A diamond pyramid-shaped indenter is pressed into the specimen and the indentation is measured optically. From the results, the Vickers hardness HV is determined with the aid of a table or formula.
- Brinell: In the Brinell hardness test (EN ISO 6506-1), a ball made of sintered carbide is pressed into the material surface and the impression is evaluated. The Brinell test method is mainly used for inhomogeneous, soft to medium-hard materials.
What are the disadvantages of conventional hardness testing?
Hardness testing methods are indispensable in materials testing and quality control. However, despite continuous improvement of the testing equipment, there is still a significant disadvantage with conventional methods of testing hardness:
- Only one key figure: A conventional test provides only one characteristic value, the hardness. For some materials, the approximate tensile strength can be determined with a conversion table, but for most of them a complex, destructive tensile test in a material testing laboratory is necessary.
Innovative hardness testing from Imprintec: Optimize products and quality assurance
The imprinting method according to DIN SPEC 4864 by Imprintec enables you to perform precise and non-destructive material testing. Our testing equipment is based on the innovative principle of 3D evaluation of the hardness indentations using detailed FEM simulations.