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Hardness Testing Machine


Digital Impact Testing Machine - Mech.CS.DITASTM

Digital Impact Testing Machine

General Description:

The pendulum Impact Tester Model Mech.CS.DITASTM is designed for conducting izod, Charpy test. The test methods confirm to BS : 131 : part 4-1972 (amended 15 Aug. 1993)BSEN : 10045-2 : 1993 & ASTM : E-23-94a.
The Pendulum is mounted on antifriction bearings. It has two starting positions, the upper one for Charpy & the lower one for izod testing. On release, the pendulum swings down to brake the specimen and the energy absorbed in doing so is measured as the difference between the height of drop before rupture and the height of rise after rupture of the test specimen and is read from the maximum pointer position on the dial scale. (It is read on Digital Panel in case of digital models)

Controls of Pendulum:

The Pendulum supports in the starting positions is by a self resetting latch. The release mechanism is operated by lever. The pendulum release latch is operated only when this lever is operated

Strikers & Supports:

There are two strikers and one combined support available for lifting in to the pendulum and on to the base of the machine for Izod., Charpy test, Changing from one striker to another is achieved simply by fixing the new striker into it's position.


The Charpy test piece rests on alloy support anvils, fitted on the base of the machine rigidly held in position by Allen screws. End stopper is provided for quickly and accurately locating the test piece centrally between the supports.


This impact tester offered with 300J energy exclusively for Charpy test confirming to ASTM- E-23. This machine is geometrically checked in the works to the more stringent requirements of the American standard. The accuracy of the machine is then verified by PROOF TEST by testing standard test specimens supplied the NIST, USA. All two sets of the five specimen must agree with the normal values within certain tolerance specified. 


  • Caliper gauge for checking V notch for Izod & Charpy.
  • Templates for checking 10 x 10 mm cross section of Izod / Charpy test specimen
  • Depth notch gauge including V & U notch gauges for checking depth blow V/U notch, angle and radius.
  • Self centering tong for quick and accurate setting of Charpy test specimen.
  • 'V' notch milling cutter
  • 'U' notch milling cutter
Maximum capacity 300J
Min Scale Graduation 2J
Overall Size (Appx) 1.4m x 0.5 m x 1.9m (H)
Net Weight (Appx) 450 kg