Izod Impact (Unnotched) by ASTM D4812, ISO 180

Impact resistance of polymers using pendulum impact- Izod Impact Testing (Unnotched Izod) by ASTM D4812, ISO 180. This t est provides a quick and easy quality control check to compare materials for general toughness and determine if a material meets specific impact properties.... Read More

  • Average 30% Cost

  • 100% Confidentiality

  • Free, No-obligation

  • 100% Customer



    Unnotched Izod Impact ASTM D4812 is a single-point test, and it evaluates the resistance of a material to impact from a swinging pendulum. Izod impact is the kinetic energy required to initiate fracture and continue until the test specimen is broken. This test provides a quick and easy quality control check to compare materials for general toughness and determine if a material meets specific impact properties.

    Test Procedure:

    A pendulum impact test fixture is used for this test. First, the specimen bar is clamped into the fixture keeping the thin edge facing towards the striking edge of the pendulum. Then, the striking pendulum is released to strike through the specimen. A heavier hammer is used to achieve failure if a breakage does not occur.

    Specimen size:

    For the ASTM D4812 test, the standard specimen measurement is 64 mm × 12.7 mm × 3.2 mm (2½ × ½ × 1/8 inch). The thickness of the specimen is usually 3.2 mm (0.125 inches); however, the ideal thickness is 6.4 mm or 0.25 inches so that the specimen does not bend or crush easily. Type 1A multipurpose specimen, of dimensions 80 mm × 10 mm × 4 mm, with the end tabs cut off, is used as the standard specimen for ISO 180.


    Izod impact energy is expressed in J/m or ft-lb/in. To calculate Impact strength, impact energy (in J or ft-lb) is divided by the thickness of the specimen. The test result is expressed as the average of 5 specimens.

    ISO impact strength is stated in kJ/m2. Dividing impact energy (J) by the area under the notch gives the impact strength. The test result contains an average of data obtained for ten specimens.

    A higher value of the resulting number indicates a tougher material.


    Core Materials Testing Services


    A variety of microscopy and spectroscopy tools available for precise measurements from the nano to the meter scale.

    Metrology Testing Services POPULAR TESTS:

    TEM SIMS Profilometry

    Materials Testing

    ASTM and ISO standard and custom chemical, mechanical, thermal, corrosion tests, etc. for all materials metals, ceramic or polymers.

    Materials Testing Services POPULAR TESTS:

    Nondestructive Testing Electrical Testing Chemistry Analysis

    Product Testing

    Thousands of tests for product quality and reliability under heat, humidity, temperature shock, vibration, drop, electrostatic discharge.

    Product Testing Services POPULAR TESTS:

    Vibration Testing Humidity Testing Accelerated Aging

    Looking for Material Testing?

    We have already delivered 10000+ Material Test results to top companies

      Send us a request

        Process for testing
          STEP 01

          You share material and testing requirements with us

          STEP 02

          You ship your sample to us or arrange for us to pick it up.

          STEP 03

          We deliver the test report to your email.

          Let’s work together!

          Share your testing requirements with us and we will be happy to assist you.

          ddd Just share your testing requirements and leave the rest on us!
          • Free, no-obligation consultation
          • Guaranteed confidentiality
          • Quick turnaround time
          • Hassle-free process


            Let us combine our capabilities to achieve success!!

              idea icon
              Want to connect with an expert before you leave?