Mechanical testing

P.T.C. Krka Knin Ltd. – Mechanical Testing Laboratory is an accredited testing laboratory, fully compliant with the latest requirements of the HRN EN ISO/IEC 17025:2017 standard, as confirmed by accreditation from the Croatian Accreditation Agency under the number 1459 for the scope described in the table below.

The laboratory is equipped for testing the mechanical properties of metallic materials and fastener products, with modern machines and laboratory equipment located at its premises in Knin.

The core activities of the Mechanical Testing Laboratory, which include the needs of the company itself, DIV GRUPA d.o.o., as well as the provision of external services, encompass:

Testing mechanical properties of materials,
Testing mechanical properties of fastener products,
Hardness testing of materials and fastener products.

The types of tests and methods conducted in the accredited laboratory, in accordance with the HRN EN ISO/IEC 17025:2017 standard, are listed in the table below:

No.	Materials/Products	Type of test/Property Range	Test method
1.	Metalic materials	Tensile testing / Method of test at ambient temperature (Method B)	HRN EN ISO 6892-1:2019 (ISO 6892-1:2019;EN ISO 6892-1:2019)
2.		Brinell hardness test (HBW 2,5/31,25; HBW 2,5/62,5; HBW 2,5/187,5; HBW 5/62,5)	HRN EN ISO 6506-1:2014 (ISO 6506-1:2014;EN ISO 6506-1:2014)
3.		Vickers hardness test (HV 0,3; HV 1; HV 30; HV 100)	HRN EN ISO 6507-1:2023 (ISO 6507-1:2023;EN ISO 6507-1:2023)
4.		Rockwell hardness test (HRA; HRC)	HRN EN ISO 6508-1:2024 (ISO 6508-1:2024;EN ISO 6508-1:2024)
5.		Charpy impact test Range: (0÷300J)	HRN EN ISO 148-1:2016 (ISO 148-1:2016;EN ISO 148-1:2016)
6.	Bolts, screws and studs	Mechanical properties	HRN EN ISO 898-1:2013 (ISO 898-1:2013;EN ISO 898-1:2013)
7.	Nuts	Mechanical properties	HRN EN ISO 898-2:2022 (ISO 898-2:2012;EN ISO 898-2:2012)