Quality assurance of metallic materials

Quality assurance means that we examine the material to ensure that it complies with the specified requirements of the standard and/or specific customer requirements. We also verify the certificate. Destructive tests are used to provide this assurance. 

Our test laboratory analyses, examines and tests the mechanical, chemical, structural and corrosion resistance properties of the materials. Tests are performed on welded materials and base materials in compliance with current national and international standards and are carried out in a controlled environment.

Mechanical tests, chemical analyses, structural investigations and corrosion tests serve as important tools for ensuring the quality of a material or product and that it meets delivery inspection requirements.

Mechanical testing

The laboratory is euipped to perform mechanical testing with apparatus for tensile testing, bend testing, pressure testing, impact testing, ring testing and hardness testing.

The results obtained from the mechanical testing allow us to determine whether the material meets the specified criteria. These criteria can usually be found in the applicable product standard. The results of the mechanical testing show the tensile strength, plastic deformation, impact resistance (ductility), bend ductility, hardness and other properties of the material.

Chemical testing

Optical emission spectrometers (OES) and microscopy are used for the characterisation of metals and identification of major alloying elements. The laboratory also performs chemical analysis in our scanning electron microscope and energy dispersive spectrometer (SEM/EDS).

Structural investigations

A structural investigation of a material includes micro and macro examinations of welded and soldered joints, material characterisation, phase percentage and grain size analysis, hardness testing (Brinell, Vickers and Rockwell), microstructure investigation, studies of new and advanced materials, and damage assessment and fractography; analysis of fracture surfaces. 

Structural investigations allow us to determine the material's delivery condition, e.g. if the material is normalised or annealed.

Corrosion tests

In corrosion testing, a material is subjected to an accelerated corrosion process in a specific environment under strictly controlled conditions. 

There are several methods for these tests, but the most popular are intergranular corrosion tests, which are used for austenitic stainless steels and nickel bases, and pitting corrosion/general corrosion tests for stainless steel.

Contact

Johan Ageryd
Quality Manager
Phone: +46 (0)31-65 64 94
johan.ageryd@safecontrol.se