Cognor Spółka Akcyjna
Oddział HSJ w Stalowej Woli

37-450 Stalowa Wola,
ul. Kwiatkowskiego 1
tel. +48 510 223 527
tel. +48 15 813 51 84
fax: +48 15 844 23 06

How to reach us

Company's Research and Experimental Laboratory

HSJ S.A. has its own research laboratory for the purpose of carrying out research and development of products.

The laboratory performs:

––Chemical composition of steels, ferroalloys

––Mechanical properties Rm, Rp0,2 A5, Z,(Rp0,2 at tamperatures up tp 800ºC)

––Impact of temperature to—60ºC in ”U” and ”V” notched samples

––hardness (Rockwell, Brinnel, Vickers)


––non-metallic intrusions (e.g. according to ASTM E 45, DIN 50602)

––grain size (e.g. according to ASTM E112, DIN 50601)

––surface decarburization of products


The laboratory is approved by the Office of Technical Inspection (OTI) and also by OTI subcontractors in the performance of laboratory tests No. LB - 032/22. The laboratory meets the criteria of the technical requirements set out in p.5 PNEN ISO/IEC 17025:2005.

Subcontractor Approval Certificate  Range of Approval
Certification of Laboratory  
 Świadectwo Podwykonawcy  Świadectwo Uznania Laboratorium  Zakres Uznania

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