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Zwick/Roell Z250 strength testing device; strength range up to 250kN
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By means of ZWICK Z250 testing machine one can perform all static strength tests required in assessment of the quality of examined materials. The machine is equipped with tools facilitating strength tests of various sizes of samples and objects as well as samples of specific mechanical properties such as: maraging alloys, nano-crystalline materials or ultra-fine grained materials, testing of which is within the interest of IMZ. Simultaneous application of two extensometers for measurement of change in length and width of the sample facilitates recording of the change in strain and actual elongation during test, which is necessary for determination of inter alia, the following: strengthening curve or plastic anisotropy ratio.
Basic scope of the offered tests by means of  Zwick Z250 testing machine:

  • static tensile test at room temperature, with determination of values required by PN-EN ISO 6892-1 standard;
  • static compression and bend test;
  • determination of Young E module,
  • determination of plastic anisotropy ratio „r” for sheets and strips;
  • determination of strain-hardening coefficient „n” at drawing;
  • technological tests of bending, breaking, flattening, expanding, etc.;
  • tests of mechanical properties of reinforced bars, tubes, plates, sections, welded joints, and other steel products.

 

Technical parameters of  Zwick  Z250 testing machine:

Accuracy and repeatability of positioning

± 2 μm
Strength measurement 0.5 class
Measurement range of force 165 % of nominal force FN
Maximum testing force FN (expanding / compression) 250kN
Testing rate in the entire range of load 0 – FN 0.0001 – 600 mm/min
Maximum measurement road of extensometer 30 mm
Used extensometers For measurement of elongation

Callipers sparing 10 – 200 mm

For measurement of contraction

Callipers sparing 10 – 20 mm

Samples for testing

Flat According to PN-EN ISO 6892-1

sheets, strips of length >= 0.1 mm

Round According to PN-EN ISO 6892-1

wires, rods etc. of diameter >= 4 mm

 


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