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Pendulum Impact Testing Machines

For tests up to 750 joules Download
  • Predominantly metals
Max. energy
  • Up to 750 joules
Type of test
  • Charpy
  • Izod
  • Tensile impact
  • Brugger
  • Wedge impact
  • ISO 148-1
  • ISO 14556
  • ISO 11343
  • ASTM E23
  • BS131-1
  • ZF 15-53
  • JIS Z 2242
  • GOST 9454-78

A pendulum impact testing machine is used to determine the impact strength or toughness of a material under impact loading by measuring the amount of energy the material is able to absorb. Understanding a material’s energy absorption properties is critical in predicting how much plastic, or permanent, deformation the material will be able to withstand before failure and is an important consideration in research and development applications as well as for quality control and material acceptance purposes.

Video: Pendulum impact testing machines HIT450P and HIT750P

Find the right pendulum impact tester for your needs!

Find the right pendulum impact tester for your needs!

Pendulum impact tester HIT450P & HIT300P applications
Pendulum impact tester HIT750P applications

Pendulum impact tester HIT450P & HIT300P applications

The HIT450P / HIT300P is a universal pendulum impact testing machine that can be used for a wide range of test types. Due to its modularity and comprehensive range of accessories it is suitable for research & development, as well as quality assurance requirements.

The HIT450P / HIT300P can be used for tests to the following standards: ISO 148-1, ISO 14556, ASTM E23, BS131-1, ZF 15-53, ISO 11343, JIS Z 2242, GOST 9454-78, DIN 50115 (withdrawn).

  • Impact tests on metals (Charpy, Izod conventional and instrumented)
  • Impact tensile tests on metals
  • Wedge impact test for determination of the strength behavior of structural adhesives

Pendulum impact tester HIT750P applications

The pendulum impact tester 750 can be used for tests to the following standards (among others): ISO 148-1, ISO 14556, ASTM E23, JIS Z 2242, GOST 9454-78, DIN 50115 (withdrawn).

  • Impact tests on metals (Charpy conventional and instrumented)
  • Tensile impact tests on metals

An operational instrument includes:

  • Basic instrument, electromagnetic pendulum hammer release, motorized pendulum lifting, electrically operated safety device and safety housing
  • Grout and heavy duty anchors
  • Steel reinforced foundation or concrete base
  • Test-specific accessories such as impact fixture, supports, pendulum rod with hammer, specimen tongs for Charpy specimens
  • Wear parts such as anvil and striking edge
  • Optional accessories such as PC equipment or temperature conditioning devices

Advantages & features of our pendulum impact testing machines

Advantages & features of our pendulum impact testing machines

Modern touch interface
Short test cycles
Reliable test results
Reduced operating costs
Safety and ergonomics

Modern touch interface

The new user interface saves time and money

  • Training is unnecessary: ZwickRoell testing machines and instruments are operated with the same user interface logic.
  • Plug and play: common standards are already set up in the ZwickRoell testing software.

Short test cycles

Short test cycles

  • Easy, standard-compliant specimen insertion
  • Purposeful, selective removal of specimen remains
  • Semi-automatic centering of Charpy specimen

Reliable test results

Reliable test results

  • Plausibility check of test results enabled by a combination of electronic and analog displays.
  • The air and bearing friction of the pendulum hammer and the friction of the analog display drag pointer are determined and compensated via software.
  • Transmission errors are eliminated: measurement data from the caliper is read in directly; test series can be transmitted to a PC via a USB port.
  • The instrumentation determines further important material-specific properties in addition to the potential energy, e.g. force/time characteristic lines.

Reduced operating costs

Reduced operating costs

  • Anvils made of modern materials with high-quality coatings reduce wear and tear.

Safety and ergonomics

Safety and ergonomics

  • Complies with the requirements of ISO 13849.
  • With the safety device, the pendulum can be released using an integrated release button on the door handle. The test can be initiated immediately after closing the safety device. This allows for quick testing of temperature-conditioned specimens.

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Technical overview

Pendulum impact testing machines for plastics

With our HIT series pendulum impact testers for tests on plastics up to 50 joules, ZwickRoell offers a particularly precise, while also economical solution for the polymer industry:

Pendulum impact testers for tests on plastics

Related Products and Accessories


Name Type Size Download
  • Industry brochure: Metals PDF 8 MB
  • Product Information: Pendulum impact tester HIT450P up to 450 J PDF 661 KB
  • Product Information: Pendulum impact tester HIT750P up to 750 J PDF 2 MB

Interesting customer projects

Learn more about important standard tests using our pendulum impact testing machines

Notched Charpy impact test metals
ISO 148-1
to Notched Charpy impact test metals
Charpy and Izod notched impact test metals
to Charpy and Izod notched impact test metals

What is pendulum impact testing?

Pendulum impact testing essentially requires the placement of a specimen in the testing machine, where it is struck with a with a hammer mounted on a swinging pendulum. The base components of a pendulum impact tester are the machine frame, a weighted pendulum rod with hammer, a dial gauge, specimen supports, and a safety shield/device. Complete pendulum impact systems can also include PC equipment and temperature conditioning devices.

  • For a Charpy test, the most common pendulum impact test for metals, a metal specimen is machined with a v-shape notch (in special cases, a u-shape notch), which provides a defined breaking point. The specimen is centered on the supports horizontally with the notch facing away from the pendulum. The pendulum is released to strike and fracture the specimen.
  • As the specimen is hit, it absorbs part of the kinetic energy. The tougher the material, the more it has to be deformed before it breaks. On the other hand, very brittle specimens break almost without deformation. While influences such as fracture speed and notch shape are an important part of the test, the main purpose of the Charpy pendulum impact test is to qualitatively compare the toughness of the same material at different temperatures.
  • By testing identical specimens at varying temperatures, it is possible to determine at what temperature the material becomes brittle, which helps predict its limitations. Consider, for example, the importance of understanding the impact characteristics of the material used to build the body of an airplane and the different temperatures it must sustain on the ground in different climates and as it reaches flight altitudes.

Differentiation between instrumented and non-instrumented testing

Depending on the objective, application and material of the test being performed, pendulum impact tests can be carried out with either conventional or instrumented equipment.

  • In a conventional test (not instrumented), the amount of energy absorbed by the specimen during fracture is calculated by comparing the difference of the height of the pendulum before and after the fracture. The energy absorbed is directly related to the brittleness of the material, where brittle materials normally have lower absorption rates than ductile materials.
  • An instrumented impact test measures the force during impact, provides high-speed stress/strain data that differentiates between ductile and brittle failure and provides information on fracture mechanical characteristics. Instrumentation, therefore, allows us to determine the failure mode not just the failure energy.