Erne Fittings Test Laboratory (EN ISO 17025)


The quality management and Erne test laboratory, equipped with the latest equipment and accredited to EN ISO 17025, set new industry standards. Our highly qualified staff (certification up to Level 3 according to EN 473 and SNT-TC-1A) also make a valuable contribution to fulfilling the goals and requirements of our customers. You will find our certification and laboratory brochure under Downloads. If you have any further questions, please get in touch with our test laboratory.

Tensile Test


Technical details
Standards: EN ISO 6892-1, ASTM A370 400KN and 100KN
tensile test machines incl. strain measurement equipment
Hot tensile tests according to EN ISO 6892-2 up to 900°C

Method in detail
The tensile test is a standardized method in destructive materials testing. The test can determine the tensile strength, yield strength, elongation after fracture, constriction after fracture, and other material properties.

During the tensile test, standardized test pieces with a defined cross-sectional area (circular cross section or rectangular cross section) are elongated until they break. The elongation and the travel are increased equally without any impacts and at a low speed. While the tensile test is being performed, the force on the test piece and the length change in the measured section are measured continuously.

Impact Test


Technical details
Standards: EN ISO 148-1, ASTM E23, ASTM A370, Capacity of nominal energy 450 J, peens 2 mm and 8 mm, test temperatures up to -196°C incl. lateral expansion and fracture determinations

Method in detail
The impact test serves to examine the fracture behavior of materials at different temperatures. In addition to impact values, the lateral fracture expansion and fracture appearance can be determined.

During the impact test, a swing hammer with a defined mass strikes the back of a notched standardized test piece, thereby smashing it. Depending on the material and test temperature, a certain amount of energy is absorbed by the test piece. This absorbed energy is specified in joules.



Technical details

  • Incident light microscope with magnification of 1000x
  • Phase determination according to ASTM A923
  • Volume fraction determination according to ASTM E562
  • Grain size determination
  • Determination of the degree of purity
  • General metallographic constituent determination
  • Digital, calibrated image data capture and analysis


Method in detail
Microscopy is viewing objects that are so small that they cannot be seen with the naked eye, e.g., grains in steel.



Technical details
Stereo microscope with magnification up to 70x and macro exposure station with magnification of 5x Digital, calibrated image data capture and analysis

Method in detail
Macroscopy is limited to views that can be seen by the naked eye, e.g., layer structure of a weld seam.

Spectral Analysis


Technical details
Standards: ASTM A751
Method: optical emission spectrometry (OES)
Elements: C, Si, Mn, P, Cr, Mo, Ni, Al, Co, Cu, Nb, Ti, V, Pb, Sn, B, N, Fe

Method in detail
Optical emission spectrometry (OES) is used for the quantitative and qualitative analysis of test pieces.

The method is based on the fact that excited atoms emit electromagnetic radiation characteristic of the chemical element and thus provide information on the composition of the test piece. The atoms are excited using an arc.

Metallographical Practice


Method in detail

  • Reproducible grind and polish equipment

Hardness Test


Technical details

  • Hardness according to Vickers EN ISO 6507-1
  • Hardness according to Brinell EN ISO 6506-1

Corrosion Test


Technical details

  • Intergranular corrosion according to EN ISO 3651-2 method A-C and ASTM A262 Practice E
  • Pitting corrosion according to ASTM G48 Method A, ASTM A923 Method C

Other Testings


Technical details

  • Flattening test according to EN ISO 8492
  • Drift expanding test according to EN ISO 8493
  • Ring expanding test according to EN ISO 8495
  • Ring tensile test according to EN ISO 8496
  • Bend test according to EN ISO 5173


Method in detail

  • Performance of welding procedure test according to EN ISO 15614

Sample Preparation

Sample preparation

Technical details

  • The test pieces are processed using the latest CNC machines.